Merge tag 'tty-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big serial/tty driver update for 4.5-rc1.
Lots of driver updates and some tty core changes. All of these have
been in linux-next and the details are in the shortlog"
* tag 'tty-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (127 commits)
drivers/tty/serial: delete unused MODULE_DEVICE_TABLE from atmel_serial.c
serial: sh-sci: Remove cpufreq notifier to fix crash/deadlock
serial: 8250: of: Fix the driver and actually compile the 8250_of
tty: amba-pl011: use iotype instead of access_32b to track 32-bit I/O
tty: amba-pl011: fix earlycon register offsets
serial: sh-sci: Drop the sci_fck clock fallback
sh: sh7734: Correct SCIF type for BRG
sh: Remove sci_ick clock alias
sh: Rename sci_ick and sci_fck clock to fck
serial: sh-sci: Add support for optional BRG on (H)SCIF
serial: sh-sci: Add support for optional external (H)SCK input
serial: sh-sci: Prepare for multiple sampling clock sources
serial: sh-sci: Correct SCIF type on R-Car for BRG
serial: sh-sci: Correct SCIF type on RZ/A1H
serial: sh-sci: Replace struct sci_port_info by type/regtype encoding
serial: sh-sci: Add BRG register definitions
serial: sh-sci: Take into account sampling rate for max baud rate
serial: sh-sci: Merge sci_scbrr_calc() and sci_baud_calc_hscif()
serial: sh-sci: Avoid calculating the receive margin for HSCIF
serial: sh-sci: Improve bit rate error calculation for HSCIF
...
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
index 73f825e..401b1b3 100644
--- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
+++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
@@ -2,7 +2,7 @@
Required properties:
- - compatible: Must contain one of the following:
+ - compatible: Must contain one or more of the following:
- "renesas,scif-r7s72100" for R7S72100 (RZ/A1H) SCIF compatible UART.
- "renesas,scifa-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFA compatible UART.
@@ -15,10 +15,14 @@
- "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
- "renesas,scifb-r8a7790" for R8A7790 (R-Car H2) SCIFB compatible UART.
- "renesas,hscif-r8a7790" for R8A7790 (R-Car H2) HSCIF compatible UART.
- - "renesas,scif-r8a7791" for R8A7791 (R-Car M2) SCIF compatible UART.
- - "renesas,scifa-r8a7791" for R8A7791 (R-Car M2) SCIFA compatible UART.
- - "renesas,scifb-r8a7791" for R8A7791 (R-Car M2) SCIFB compatible UART.
- - "renesas,hscif-r8a7791" for R8A7791 (R-Car M2) HSCIF compatible UART.
+ - "renesas,scif-r8a7791" for R8A7791 (R-Car M2-W) SCIF compatible UART.
+ - "renesas,scifa-r8a7791" for R8A7791 (R-Car M2-W) SCIFA compatible UART.
+ - "renesas,scifb-r8a7791" for R8A7791 (R-Car M2-W) SCIFB compatible UART.
+ - "renesas,hscif-r8a7791" for R8A7791 (R-Car M2-W) HSCIF compatible UART.
+ - "renesas,scif-r8a7793" for R8A7793 (R-Car M2-N) SCIF compatible UART.
+ - "renesas,scifa-r8a7793" for R8A7793 (R-Car M2-N) SCIFA compatible UART.
+ - "renesas,scifb-r8a7793" for R8A7793 (R-Car M2-N) SCIFB compatible UART.
+ - "renesas,hscif-r8a7793" for R8A7793 (R-Car M2-N) HSCIF compatible UART.
- "renesas,scif-r8a7794" for R8A7794 (R-Car E2) SCIF compatible UART.
- "renesas,scifa-r8a7794" for R8A7794 (R-Car E2) SCIFA compatible UART.
- "renesas,scifb-r8a7794" for R8A7794 (R-Car E2) SCIFB compatible UART.
@@ -27,6 +31,14 @@
- "renesas,hscif-r8a7795" for R8A7795 (R-Car H3) HSCIF compatible UART.
- "renesas,scifa-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFA compatible UART.
- "renesas,scifb-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFB compatible UART.
+ - "renesas,rcar-gen1-scif" for R-Car Gen1 SCIF compatible UART,
+ - "renesas,rcar-gen2-scif" for R-Car Gen2 SCIF compatible UART,
+ - "renesas,rcar-gen3-scif" for R-Car Gen3 SCIF compatible UART,
+ - "renesas,rcar-gen2-scifa" for R-Car Gen2 SCIFA compatible UART,
+ - "renesas,rcar-gen2-scifb" for R-Car Gen2 SCIFB compatible UART,
+ - "renesas,rcar-gen1-hscif" for R-Car Gen1 HSCIF compatible UART,
+ - "renesas,rcar-gen2-hscif" for R-Car Gen2 HSCIF compatible UART,
+ - "renesas,rcar-gen3-hscif" for R-Car Gen3 HSCIF compatible UART,
- "renesas,scif" for generic SCIF compatible UART.
- "renesas,scifa" for generic SCIFA compatible UART.
- "renesas,scifb" for generic SCIFB compatible UART.
@@ -34,15 +46,26 @@
- "renesas,sci" for generic SCI compatible UART.
When compatible with the generic version, nodes must list the
- SoC-specific version corresponding to the platform first followed by the
- generic version.
+ SoC-specific version corresponding to the platform first, followed by the
+ family-specific and/or generic versions.
- reg: Base address and length of the I/O registers used by the UART.
- interrupts: Must contain an interrupt-specifier for the SCIx interrupt.
- clocks: Must contain a phandle and clock-specifier pair for each entry
in clock-names.
- - clock-names: Must contain "sci_ick" for the SCIx UART interface clock.
+ - clock-names: Must contain "fck" for the SCIx UART functional clock.
+ Apart from the divided functional clock, there may be other possible
+ sources for the sampling clock, depending on SCIx variant.
+ On (H)SCI(F) and some SCIFA, an additional clock may be specified:
+ - "hsck" for the optional external clock input (on HSCIF),
+ - "sck" for the optional external clock input (on other variants).
+ On UARTs equipped with a Baud Rate Generator for External Clock (BRG)
+ (some SCIF and HSCIF), additional clocks may be specified:
+ - "brg_int" for the optional internal clock source for the frequency
+ divider (typically the (AXI or SHwy) bus clock),
+ - "scif_clk" for the optional external clock source for the frequency
+ divider (SCIF_CLK).
Note: Each enabled SCIx UART should have an alias correctly numbered in the
"aliases" node.
@@ -58,12 +81,13 @@
};
scifa0: serial@e6c40000 {
- compatible = "renesas,scifa-r8a7790", "renesas,scifa";
+ compatible = "renesas,scifa-r8a7790",
+ "renesas,rcar-gen2-scifa", "renesas,scifa";
reg = <0 0xe6c40000 0 64>;
interrupt-parent = <&gic>;
interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
- clock-names = "sci_ick";
+ clock-names = "fck";
dmas = <&dmac0 0x21>, <&dmac0 0x22>;
dma-names = "tx", "rx";
};
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8b9fc65..b7d4487 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -730,16 +730,17 @@
uart[8250],io,<addr>[,options]
uart[8250],mmio,<addr>[,options]
+ uart[8250],mmio16,<addr>[,options]
uart[8250],mmio32,<addr>[,options]
uart[8250],0x<addr>[,options]
Start an early, polled-mode console on the 8250/16550
UART at the specified I/O port or MMIO address,
switching to the matching ttyS device later.
MMIO inter-register address stride is either 8-bit
- (mmio) or 32-bit (mmio32).
- If none of [io|mmio|mmio32], <addr> is assumed to be
- equivalent to 'mmio'. 'options' are specified in the
- same format described for ttyS above; if unspecified,
+ (mmio), 16-bit (mmio16), or 32-bit (mmio32).
+ If none of [io|mmio|mmio16|mmio32], <addr> is assumed
+ to be equivalent to 'mmio'. 'options' are specified in
+ the same format described for ttyS above; if unspecified,
the h/w is not re-initialized.
hvc<n> Use the hypervisor console device <n>. This is for
@@ -1011,10 +1012,13 @@
unspecified, the h/w is not initialized.
pl011,<addr>
+ pl011,mmio32,<addr>
Start an early, polled-mode console on a pl011 serial
port at the specified address. The pl011 serial port
must already be setup and configured. Options are not
- yet supported.
+ yet supported. If 'mmio32' is specified, then only
+ the driver will use only 32-bit accessors to read/write
+ the device registers.
msm_serial,<addr>
Start an early, polled-mode console on an msm serial
diff --git a/arch/sh/kernel/cpu/clock-cpg.c b/arch/sh/kernel/cpu/clock-cpg.c
index 8525a67..786c076 100644
--- a/arch/sh/kernel/cpu/clock-cpg.c
+++ b/arch/sh/kernel/cpu/clock-cpg.c
@@ -63,7 +63,6 @@
clk_add_alias("fck", "sh-mtu2", "peripheral_clk", NULL);
clk_add_alias("fck", "sh-cmt-16.0", "peripheral_clk", NULL);
clk_add_alias("fck", "sh-cmt-32.0", "peripheral_clk", NULL);
- clk_add_alias("sci_ick", NULL, "peripheral_clk", NULL);
return ret;
}
diff --git a/arch/sh/kernel/cpu/sh2a/clock-sh7264.c b/arch/sh/kernel/cpu/sh2a/clock-sh7264.c
index 8638fba..7e06e39 100644
--- a/arch/sh/kernel/cpu/sh2a/clock-sh7264.c
+++ b/arch/sh/kernel/cpu/sh2a/clock-sh7264.c
@@ -115,7 +115,14 @@
CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
/* MSTP clocks */
- CLKDEV_CON_ID("sci_ick", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.6", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.7", &mstp_clks[MSTP77]),
CLKDEV_CON_ID("vdc3", &mstp_clks[MSTP74]),
CLKDEV_ICK_ID("fck", "sh-cmt-16.0", &mstp_clks[MSTP72]),
CLKDEV_CON_ID("usb0", &mstp_clks[MSTP60]),
diff --git a/arch/sh/kernel/cpu/sh2a/clock-sh7269.c b/arch/sh/kernel/cpu/sh2a/clock-sh7269.c
index f8a5c2a..663a97b 100644
--- a/arch/sh/kernel/cpu/sh2a/clock-sh7269.c
+++ b/arch/sh/kernel/cpu/sh2a/clock-sh7269.c
@@ -150,14 +150,14 @@
CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
/* MSTP clocks */
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP47]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP46]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP45]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP44]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP43]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP42]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.6", &mstp_clks[MSTP41]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.7", &mstp_clks[MSTP40]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP47]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP46]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP45]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP44]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP43]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP42]),
+ CLKDEV_ICK_ID("fck", "sh-sci.6", &mstp_clks[MSTP41]),
+ CLKDEV_ICK_ID("fck", "sh-sci.7", &mstp_clks[MSTP40]),
CLKDEV_ICK_ID("fck", "sh-cmt-16.0", &mstp_clks[MSTP72]),
CLKDEV_CON_ID("usb0", &mstp_clks[MSTP60]),
CLKDEV_ICK_ID("fck", "sh-mtu2", &mstp_clks[MSTP35]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
index 9edc06c..a907ee2 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
@@ -232,10 +232,10 @@
CLKDEV_CON_ID("mfi0", &mstp_clks[MSTP011]),
CLKDEV_CON_ID("flctl0", &mstp_clks[MSTP010]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP007]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP006]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP005]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP004]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP007]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP006]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP005]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP004]),
CLKDEV_CON_ID("sio0", &mstp_clks[MSTP003]),
CLKDEV_CON_ID("siof0", &mstp_clks[MSTP002]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7366.c b/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
index 955b9ad..ac98541 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
@@ -230,9 +230,9 @@
CLKDEV_CON_ID("mfi0", &mstp_clks[MSTP011]),
CLKDEV_CON_ID("flctl0", &mstp_clks[MSTP010]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP007]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP006]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP005]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP007]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP006]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP005]),
CLKDEV_CON_ID("msiof0", &mstp_clks[MSTP002]),
CLKDEV_CON_ID("sbr0", &mstp_clks[MSTP001]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7723.c b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
index ccbcab5..fe84422 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
@@ -267,12 +267,12 @@
CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[HWBLK_TMU0]),
CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[HWBLK_TMU1]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[HWBLK_SCIF5]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[HWBLK_SCIF5]),
CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[HWBLK_LCDC]),
};
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7734.c b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c
index 7f54bf2f..354dcac 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7734.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c
@@ -194,12 +194,12 @@
/* MSTP32 clocks */
CLKDEV_DEV_ID("i2c-sh7734.0", &mstp_clks[MSTP030]),
CLKDEV_DEV_ID("i2c-sh7734.1", &mstp_clks[MSTP029]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP026]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP024]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP023]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP022]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP021]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP026]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP025]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP024]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP023]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP022]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP021]),
CLKDEV_CON_ID("hscif", &mstp_clks[MSTP019]),
CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP016]),
CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP015]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7757.c b/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
index e40ec2c..b10af2a 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
@@ -125,9 +125,9 @@
CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP113]),
CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP114]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP112]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP111]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP110]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP112]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP111]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP110]),
CLKDEV_CON_ID("usb_fck", &mstp_clks[MSTP103]),
CLKDEV_DEV_ID("renesas_usbhs.0", &mstp_clks[MSTP102]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
index 8eb6e62..1aafd54 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
@@ -132,12 +132,12 @@
CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
/* MSTP32 clocks */
- CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP029]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP028]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP027]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP026]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP024]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP029]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP028]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP027]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP026]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP025]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP024]),
CLKDEV_CON_ID("ssi1_fck", &mstp_clks[MSTP021]),
CLKDEV_CON_ID("ssi0_fck", &mstp_clks[MSTP020]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7786.c b/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
index 5e50e7e..ac3dcfe 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
@@ -139,12 +139,12 @@
CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
/* MSTP32 clocks */
- CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP029]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP028]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP027]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP026]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP024]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP029]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP028]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP027]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP026]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP025]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP024]),
CLKDEV_CON_ID("ssi3_fck", &mstp_clks[MSTP023]),
CLKDEV_CON_ID("ssi2_fck", &mstp_clks[MSTP022]),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-shx3.c b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
index 605221d..b1bdbc3 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
@@ -114,10 +114,10 @@
CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
/* MSTP32 clocks */
- CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP027]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP026]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]),
- CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP024]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP027]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP026]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP025]),
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP024]),
CLKDEV_CON_ID("h8ex_fck", &mstp_clks[MSTP003]),
CLKDEV_CON_ID("csm_fck", &mstp_clks[MSTP002]),
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7734.c b/arch/sh/kernel/cpu/sh4a/setup-sh7734.c
index f617bcb..69b8a50 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7734.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7734.c
@@ -28,7 +28,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif0_resources[] = {
@@ -50,7 +50,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif1_resources[] = {
@@ -72,7 +72,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif2_resources[] = {
@@ -94,7 +94,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE | SCSCR_TOIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif3_resources[] = {
@@ -116,7 +116,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif4_resources[] = {
@@ -138,7 +138,7 @@
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE,
.type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
+ .regtype = SCIx_SH4_SCIF_BRG_REGTYPE,
};
static struct resource scif5_resources[] = {
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index e53d9a5..2caaf5a 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -32,7 +32,6 @@
#include <linux/delay.h>
#undef SERIAL_PARANOIA_CHECK
-#define SERIAL_DO_RESTART
/* Set of debugging defines */
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index d4a1331..abbed20 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -292,14 +292,14 @@
static struct timer_list cyz_rx_full_timer[NR_PORTS];
#endif /* CONFIG_CYZ_INTR */
-static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
+static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
{
struct cyclades_card *card = port->card;
cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
}
-static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
+static u8 cyy_readb(struct cyclades_port *port, u32 reg)
{
struct cyclades_card *card = port->card;
@@ -321,7 +321,7 @@
return __cyz_fpga_loaded(card->ctl_addr.p9060);
}
-static inline bool cyz_is_loaded(struct cyclades_card *card)
+static bool cyz_is_loaded(struct cyclades_card *card)
{
struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS;
@@ -329,7 +329,7 @@
readl(&fw_id->signature) == ZFIRM_ID;
}
-static inline int serial_paranoia_check(struct cyclades_port *info,
+static int serial_paranoia_check(struct cyclades_port *info,
const char *name, const char *routine)
{
#ifdef SERIAL_PARANOIA_CHECK
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index 2054427..9987594 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -220,7 +220,7 @@
* it wants to talk.
*/
-static inline int WaitTillCardIsFree(unsigned long base)
+static int WaitTillCardIsFree(unsigned long base)
{
unsigned int count = 0;
unsigned int a = in_atomic(); /* do we run under spinlock? */
@@ -280,7 +280,7 @@
}
/* card->lock HAS to be held */
-static inline void drop_dtr(struct isi_port *port)
+static void drop_dtr(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 14c54e0..92982d7 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -155,7 +155,6 @@
#define LOWWAIT 2
#define EMPTYWAIT 3
-#define SERIAL_DO_RESTART
#define WAKEUP_CHARS 256
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index e49c2bce..d9a5fc2 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -162,12 +162,23 @@
return put_user(x, ptr);
}
-static inline int tty_copy_to_user(struct tty_struct *tty,
- void __user *to,
- const void *from,
- unsigned long n)
+static int tty_copy_to_user(struct tty_struct *tty, void __user *to,
+ size_t tail, size_t n)
{
struct n_tty_data *ldata = tty->disc_data;
+ size_t size = N_TTY_BUF_SIZE - tail;
+ const void *from = read_buf_addr(ldata, tail);
+ int uncopied;
+
+ if (n > size) {
+ tty_audit_add_data(tty, from, size, ldata->icanon);
+ uncopied = copy_to_user(to, from, size);
+ if (uncopied)
+ return uncopied;
+ to += size;
+ n -= size;
+ from = ldata->read_buf;
+ }
tty_audit_add_data(tty, from, n, ldata->icanon);
return copy_to_user(to, from, n);
@@ -1201,9 +1212,7 @@
ldata->num_overrun++;
if (time_after(jiffies, ldata->overrun_time + HZ) ||
time_after(ldata->overrun_time, jiffies)) {
- printk(KERN_WARNING "%s: %d input overrun(s)\n",
- tty_name(tty),
- ldata->num_overrun);
+ tty_warn(tty, "%d input overrun(s)\n", ldata->num_overrun);
ldata->overrun_time = jiffies;
ldata->num_overrun = 0;
}
@@ -1486,8 +1495,7 @@
n_tty_receive_overrun(tty);
break;
default:
- printk(KERN_ERR "%s: unknown flag %d\n",
- tty_name(tty), flag);
+ tty_err(tty, "unknown flag %d\n", flag);
break;
}
}
@@ -2006,11 +2014,11 @@
n = min(head - ldata->read_tail, N_TTY_BUF_SIZE - tail);
n = min(*nr, n);
if (n) {
- retval = copy_to_user(*b, read_buf_addr(ldata, tail), n);
+ const unsigned char *from = read_buf_addr(ldata, tail);
+ retval = copy_to_user(*b, from, n);
n -= retval;
- is_eof = n == 1 && read_buf(ldata, tail) == EOF_CHAR(tty);
- tty_audit_add_data(tty, read_buf_addr(ldata, tail), n,
- ldata->icanon);
+ is_eof = n == 1 && *from == EOF_CHAR(tty);
+ tty_audit_add_data(tty, from, n, ldata->icanon);
smp_store_release(&ldata->read_tail, ldata->read_tail + n);
/* Turn single EOF into zero-length read */
if (L_EXTPROC(tty) && ldata->icanon && is_eof &&
@@ -2072,12 +2080,10 @@
if (eol == N_TTY_BUF_SIZE && more) {
/* scan wrapped without finding set bit */
eol = find_next_bit(ldata->read_flags, more, 0);
- if (eol != more)
- found = 1;
- } else if (eol != size)
- found = 1;
+ found = eol != more;
+ } else
+ found = eol != size;
- size = N_TTY_BUF_SIZE - tail;
n = eol - tail;
if (n > N_TTY_BUF_SIZE)
n += N_TTY_BUF_SIZE;
@@ -2088,17 +2094,10 @@
n = c;
}
- n_tty_trace("%s: eol:%zu found:%d n:%zu c:%zu size:%zu more:%zu\n",
- __func__, eol, found, n, c, size, more);
+ n_tty_trace("%s: eol:%zu found:%d n:%zu c:%zu tail:%zu more:%zu\n",
+ __func__, eol, found, n, c, tail, more);
- if (n > size) {
- ret = tty_copy_to_user(tty, *b, read_buf_addr(ldata, tail), size);
- if (ret)
- return -EFAULT;
- ret = tty_copy_to_user(tty, *b + size, ldata->read_buf, n - size);
- } else
- ret = tty_copy_to_user(tty, *b, read_buf_addr(ldata, tail), n);
-
+ ret = tty_copy_to_user(tty, *b, tail, n);
if (ret)
return -EFAULT;
*b += n;
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index a45660f..b311004 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -788,7 +788,7 @@
if (retval)
goto err_release;
- tty_debug_hangup(tty, "(tty count=%d)\n", tty->count);
+ tty_debug_hangup(tty, "opening (count=%d)\n", tty->count);
tty_unlock(tty);
return 0;
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index 0140ba4..0982c1a 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -157,7 +157,7 @@
#endif
-static int m68328_console_initted = 0;
+static int m68328_console_initted;
static int m68328_console_baud = CONSOLE_BAUD_RATE;
static int m68328_console_cbaud = DEFAULT_CBAUD;
@@ -274,8 +274,8 @@
#endif
ch = GET_FIELD(rx, URX_RXDATA);
- if(info->is_cons) {
- if(URX_BREAK & rx) { /* whee, break received */
+ if (info->is_cons) {
+ if (URX_BREAK & rx) { /* whee, break received */
return;
#ifdef CONFIG_MAGIC_SYSRQ
} else if (ch == 0x10) { /* ^P */
@@ -302,7 +302,7 @@
tty_insert_flip_char(&info->tport, ch, flag);
#ifndef CONFIG_XCOPILOT_BUGS
- } while((rx = uart->urx.w) & URX_DATA_READY);
+ } while ((rx = uart->urx.w) & URX_DATA_READY);
#endif
tty_schedule_flip(&info->tport);
@@ -330,7 +330,7 @@
info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
info->xmit_cnt--;
- if(info->xmit_cnt <= 0) {
+ if (info->xmit_cnt <= 0) {
/* All done for now... TX ints off */
uart->ustcnt &= ~USTCNT_TX_INTR_MASK;
goto clear_and_return;
@@ -452,45 +452,45 @@
}
#ifndef CONFIG_M68VZ328
hw_baud_table[18] = {
- {0,0}, /* 0 */
- {0,0}, /* 50 */
- {0,0}, /* 75 */
- {0,0}, /* 110 */
- {0,0}, /* 134 */
- {0,0}, /* 150 */
- {0,0}, /* 200 */
- {7,0x26}, /* 300 */
- {6,0x26}, /* 600 */
- {5,0x26}, /* 1200 */
- {0,0}, /* 1800 */
- {4,0x26}, /* 2400 */
- {3,0x26}, /* 4800 */
- {2,0x26}, /* 9600 */
- {1,0x26}, /* 19200 */
- {0,0x26}, /* 38400 */
- {1,0x38}, /* 57600 */
- {0,0x38}, /* 115200 */
+ {0, 0}, /* 0 */
+ {0, 0}, /* 50 */
+ {0, 0}, /* 75 */
+ {0, 0}, /* 110 */
+ {0, 0}, /* 134 */
+ {0, 0}, /* 150 */
+ {0, 0}, /* 200 */
+ {7, 0x26}, /* 300 */
+ {6, 0x26}, /* 600 */
+ {5, 0x26}, /* 1200 */
+ {0, 0}, /* 1800 */
+ {4, 0x26}, /* 2400 */
+ {3, 0x26}, /* 4800 */
+ {2, 0x26}, /* 9600 */
+ {1, 0x26}, /* 19200 */
+ {0, 0x26}, /* 38400 */
+ {1, 0x38}, /* 57600 */
+ {0, 0x38}, /* 115200 */
};
#else
hw_baud_table[18] = {
- {0,0}, /* 0 */
- {0,0}, /* 50 */
- {0,0}, /* 75 */
- {0,0}, /* 110 */
- {0,0}, /* 134 */
- {0,0}, /* 150 */
- {0,0}, /* 200 */
- {0,0}, /* 300 */
- {7,0x26}, /* 600 */
- {6,0x26}, /* 1200 */
- {0,0}, /* 1800 */
- {5,0x26}, /* 2400 */
- {4,0x26}, /* 4800 */
- {3,0x26}, /* 9600 */
- {2,0x26}, /* 19200 */
- {1,0x26}, /* 38400 */
- {0,0x26}, /* 57600 */
- {1,0x38}, /* 115200 */
+ {0, 0}, /* 0 */
+ {0, 0}, /* 50 */
+ {0, 0}, /* 75 */
+ {0, 0}, /* 110 */
+ {0, 0}, /* 134 */
+ {0, 0}, /* 150 */
+ {0, 0}, /* 200 */
+ {0, 0}, /* 300 */
+ {7, 0x26}, /* 600 */
+ {6, 0x26}, /* 1200 */
+ {0, 0}, /* 1800 */
+ {5, 0x26}, /* 2400 */
+ {4, 0x26}, /* 4800 */
+ {3, 0x26}, /* 9600 */
+ {2, 0x26}, /* 19200 */
+ {1, 0x26}, /* 38400 */
+ {0, 0x26}, /* 57600 */
+ {1, 0x38}, /* 115200 */
};
#endif
/* rate = 1036800 / ((65 - prescale) * (1<<divider)) */
@@ -538,7 +538,7 @@
#ifdef CONFIG_SERIAL_68328_RTS_CTS
if (cflag & CRTSCTS) {
- uart->utx.w &= ~ UTX_NOCTS;
+ uart->utx.w &= ~UTX_NOCTS;
} else {
uart->utx.w |= UTX_NOCTS;
}
@@ -591,8 +591,8 @@
{
char c;
- while((c=*(p++)) != 0) {
- if(c == '\n')
+ while ((c = *(p++)) != 0) {
+ if (c == '\n')
rs_put_char('\r');
rs_put_char(c);
}
@@ -624,7 +624,7 @@
if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
return;
#ifndef USE_INTS
- for(;;) {
+ for (;;) {
#endif
/* Enable transmitter */
@@ -659,9 +659,9 @@
local_irq_restore(flags);
}
-extern void console_printn(const char * b, int count);
+extern void console_printn(const char *b, int count);
-static int rs_write(struct tty_struct * tty,
+static int rs_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
int c, total = 0;
@@ -700,7 +700,7 @@
/* Enable transmitter */
local_irq_disable();
#ifndef USE_INTS
- while(info->xmit_cnt) {
+ while (info->xmit_cnt) {
#endif
uart->ustcnt |= USTCNT_TXEN;
@@ -767,7 +767,7 @@
* incoming characters should be throttled.
* ------------------------------------------------------------
*/
-static void rs_throttle(struct tty_struct * tty)
+static void rs_throttle(struct tty_struct *tty)
{
struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
@@ -780,7 +780,7 @@
/* Turn off RTS line (do this atomic) */
}
-static void rs_unthrottle(struct tty_struct * tty)
+static void rs_unthrottle(struct tty_struct *tty)
{
struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
@@ -803,8 +803,8 @@
* ------------------------------------------------------------
*/
-static int get_serial_info(struct m68k_serial * info,
- struct serial_struct * retinfo)
+static int get_serial_info(struct m68k_serial *info,
+ struct serial_struct *retinfo)
{
struct serial_struct tmp;
@@ -827,7 +827,7 @@
}
static int set_serial_info(struct m68k_serial *info, struct tty_struct *tty,
- struct serial_struct * new_info)
+ struct serial_struct *new_info)
{
struct tty_port *port = &info->tport;
struct serial_struct new_serial;
@@ -883,7 +883,7 @@
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
*/
-static int get_lsr_info(struct m68k_serial * info, unsigned int *value)
+static int get_lsr_info(struct m68k_serial *info, unsigned int *value)
{
#ifdef CONFIG_SERIAL_68328_RTS_CTS
m68328_uart *uart = &uart_addr[info->line];
@@ -904,7 +904,7 @@
/*
* This routine sends a break character out the serial port.
*/
-static void send_break(struct m68k_serial * info, unsigned int duration)
+static void send_break(struct m68k_serial *info, unsigned int duration)
{
m68328_uart *uart = &uart_addr[info->line];
unsigned long flags;
@@ -922,7 +922,7 @@
static int rs_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
- struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
+ struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
int retval;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
@@ -992,9 +992,9 @@
* that IRQ if nothing is left in the chain.
* ------------------------------------------------------------
*/
-static void rs_close(struct tty_struct *tty, struct file * filp)
+static void rs_close(struct tty_struct *tty, struct file *filp)
{
- struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
+ struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
struct tty_port *port = &info->tport;
m68328_uart *uart = &uart_addr[info->line];
unsigned long flags;
@@ -1079,7 +1079,7 @@
*/
void rs_hangup(struct tty_struct *tty)
{
- struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
+ struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_hangup"))
return;
@@ -1098,7 +1098,7 @@
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
-int rs_open(struct tty_struct *tty, struct file * filp)
+int rs_open(struct tty_struct *tty, struct file *filp)
{
struct m68k_serial *info;
int retval;
@@ -1180,7 +1180,7 @@
local_irq_save(flags);
- for(i=0;i<NR_PORTS;i++) {
+ for (i = 0; i < NR_PORTS; i++) {
info = &m68k_soft[i];
tty_port_init(&info->tport);
@@ -1198,7 +1198,7 @@
printk(" is a builtin MC68328 UART\n");
#ifdef CONFIG_M68VZ328
- if (i > 0 )
+ if (i > 0)
PJSEL &= 0xCF; /* PSW enable second port output */
#endif
@@ -1263,7 +1263,7 @@
return(-1);
if (arg)
- n = simple_strtoul(arg,NULL,0);
+ n = simple_strtoul(arg, NULL, 0);
for (i = 0; i < ARRAY_SIZE(baud_table); i++)
if (baud_table[i] == n)
@@ -1279,7 +1279,7 @@
}
m68328_set_baud(); /* make sure baud rate changes */
- return(0);
+ return 0;
}
@@ -1298,7 +1298,7 @@
while (count--) {
if (*str == '\n')
rs_put_char('\r');
- rs_put_char( *str++ );
+ rs_put_char(*str++);
}
}
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 3912646..c9720a9 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -620,7 +620,7 @@
* @options: ptr to option string from console command line
*
* Only attempts to match console command lines of the form:
- * console=uart[8250],io|mmio|mmio32,<addr>[,<options>]
+ * console=uart[8250],io|mmio|mmio16|mmio32,<addr>[,<options>]
* console=uart[8250],0x<addr>[,<options>]
* This form is used to register an initial earlycon boot console and
* replace it with the serial8250_console at 8250 driver init.
@@ -650,8 +650,9 @@
if (port->iotype != iotype)
continue;
- if ((iotype == UPIO_MEM || iotype == UPIO_MEM32) &&
- (port->mapbase != addr))
+ if ((iotype == UPIO_MEM || iotype == UPIO_MEM16 ||
+ iotype == UPIO_MEM32 || iotype == UPIO_MEM32BE)
+ && (port->mapbase != addr))
continue;
if (iotype == UPIO_PORT && port->iobase != addr)
continue;
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index ceb8579..af62131 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -42,6 +42,8 @@
switch (port->iotype) {
case UPIO_MEM:
return readb(port->membase + offset);
+ case UPIO_MEM16:
+ return readw(port->membase + (offset << 1));
case UPIO_MEM32:
return readl(port->membase + (offset << 2));
case UPIO_MEM32BE:
@@ -59,6 +61,9 @@
case UPIO_MEM:
writeb(value, port->membase + offset);
break;
+ case UPIO_MEM16:
+ writew(value, port->membase + (offset << 1));
+ break;
case UPIO_MEM32:
writel(value, port->membase + (offset << 2));
break;
@@ -73,43 +78,27 @@
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-static void __init wait_for_xmitr(struct uart_port *port)
+static void __init serial_putc(struct uart_port *port, int c)
{
unsigned int status;
+ serial8250_early_out(port, UART_TX, c);
+
for (;;) {
status = serial8250_early_in(port, UART_LSR);
if ((status & BOTH_EMPTY) == BOTH_EMPTY)
- return;
+ break;
cpu_relax();
}
}
-static void __init serial_putc(struct uart_port *port, int c)
-{
- wait_for_xmitr(port);
- serial8250_early_out(port, UART_TX, c);
-}
-
static void __init early_serial8250_write(struct console *console,
const char *s, unsigned int count)
{
struct earlycon_device *device = console->data;
struct uart_port *port = &device->port;
- unsigned int ier;
-
- /* Save the IER and disable interrupts preserving the UUE bit */
- ier = serial8250_early_in(port, UART_IER);
- if (ier)
- serial8250_early_out(port, UART_IER, ier & UART_IER_UUE);
uart_console_write(port, s, count, serial_putc);
-
- /* Wait for transmitter to become empty and restore the IER */
- wait_for_xmitr(port);
-
- if (ier)
- serial8250_early_out(port, UART_IER, ier);
}
static void __init init_port(struct earlycon_device *device)
diff --git a/drivers/tty/serial/8250/8250_ingenic.c b/drivers/tty/serial/8250/8250_ingenic.c
index 49394b4..d6e1ec9 100644
--- a/drivers/tty/serial/8250/8250_ingenic.c
+++ b/drivers/tty/serial/8250/8250_ingenic.c
@@ -48,6 +48,7 @@
#define UART_MCR_MDCE BIT(7)
#define UART_MCR_FCM BIT(6)
+#ifdef CONFIG_SERIAL_EARLYCON
static struct earlycon_device *early_device;
static uint8_t __init early_in(struct uart_port *port, int offset)
@@ -140,6 +141,7 @@
EARLYCON_DECLARE(jz4780_uart, ingenic_early_console_setup);
OF_EARLYCON_DECLARE(jz4780_uart, "ingenic,jz4780-uart",
ingenic_early_console_setup);
+#endif /* CONFIG_SERIAL_EARLYCON */
static void ingenic_uart_serial_out(struct uart_port *p, int offset, int value)
{
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 78883ca..0e590b2 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -16,7 +16,7 @@
*/
#include <linux/clk.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
@@ -245,23 +245,6 @@
return 0;
}
-static int mtk8250_remove(struct platform_device *pdev)
-{
- struct mtk8250_data *data = platform_get_drvdata(pdev);
-
- pm_runtime_get_sync(&pdev->dev);
-
- serial8250_unregister_port(data->line);
-
- pm_runtime_disable(&pdev->dev);
- pm_runtime_put_noidle(&pdev->dev);
-
- if (!pm_runtime_status_suspended(&pdev->dev))
- mtk8250_runtime_suspend(&pdev->dev);
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int mtk8250_suspend(struct device *dev)
{
@@ -292,18 +275,18 @@
{ .compatible = "mediatek,mt6577-uart" },
{ /* Sentinel */ }
};
-MODULE_DEVICE_TABLE(of, mtk8250_of_match);
static struct platform_driver mtk8250_platform_driver = {
.driver = {
- .name = "mt6577-uart",
- .pm = &mtk8250_pm_ops,
- .of_match_table = mtk8250_of_match,
+ .name = "mt6577-uart",
+ .pm = &mtk8250_pm_ops,
+ .of_match_table = mtk8250_of_match,
+ .suppress_bind_attrs = true,
+
},
.probe = mtk8250_probe,
- .remove = mtk8250_remove,
};
-module_platform_driver(mtk8250_platform_driver);
+builtin_platform_driver(mtk8250_platform_driver);
#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init early_mtk8250_setup(struct earlycon_device *device,
@@ -319,7 +302,3 @@
OF_EARLYCON_DECLARE(mtk8250, "mediatek,mt6577-uart", early_mtk8250_setup);
#endif
-
-MODULE_AUTHOR("Matthias Brugger");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Mediatek 8250 serial port driver");
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/8250/8250_of.c
similarity index 91%
rename from drivers/tty/serial/of_serial.c
rename to drivers/tty/serial/8250/8250_of.c
index de50296..33021c1 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -18,14 +18,9 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
-#include <linux/nwpserial.h>
#include <linux/clk.h>
-#ifdef CONFIG_SERIAL_8250_MODULE
-#define CONFIG_SERIAL_8250 CONFIG_SERIAL_8250_MODULE
-#endif
-
-#include "8250/8250.h"
+#include "8250.h"
struct of_serial_info {
struct clk *clk;
@@ -122,6 +117,9 @@
case 1:
port->iotype = UPIO_MEM;
break;
+ case 2:
+ port->iotype = UPIO_MEM16;
+ break;
case 4:
port->iotype = of_device_is_big_endian(np) ?
UPIO_MEM32BE : UPIO_MEM32;
@@ -195,7 +193,6 @@
goto out;
switch (port_type) {
-#ifdef CONFIG_SERIAL_8250
case PORT_8250 ... PORT_MAX_8250:
{
struct uart_8250_port port8250;
@@ -212,12 +209,6 @@
ret = serial8250_register_8250_port(&port8250);
break;
}
-#endif
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- case PORT_NWPSERIAL:
- ret = nwpserial_register_port(&port);
- break;
-#endif
default:
/* need to add code for these */
case PORT_UNKNOWN:
@@ -245,16 +236,9 @@
{
struct of_serial_info *info = platform_get_drvdata(ofdev);
switch (info->type) {
-#ifdef CONFIG_SERIAL_8250
case PORT_8250 ... PORT_MAX_8250:
serial8250_unregister_port(info->line);
break;
-#endif
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- case PORT_NWPSERIAL:
- nwpserial_unregister_port(info->line);
- break;
-#endif
default:
/* need to add code for these */
break;
@@ -267,7 +251,6 @@
}
#ifdef CONFIG_PM_SLEEP
-#ifdef CONFIG_SERIAL_8250
static void of_serial_suspend_8250(struct of_serial_info *info)
{
struct uart_8250_port *port8250 = serial8250_get_port(info->line);
@@ -288,15 +271,6 @@
serial8250_resume_port(info->line);
}
-#else
-static inline void of_serial_suspend_8250(struct of_serial_info *info)
-{
-}
-
-static inline void of_serial_resume_8250(struct of_serial_info *info)
-{
-}
-#endif
static int of_serial_suspend(struct device *dev)
{
@@ -353,10 +327,6 @@
.data = (void *)PORT_XSCALE, },
{ .compatible = "mrvl,pxa-uart",
.data = (void *)PORT_XSCALE, },
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- { .compatible = "ibm,qpace-nwp-serial",
- .data = (void *)PORT_NWPSERIAL, },
-#endif
{ /* end of list */ },
};
MODULE_DEVICE_TABLE(of, of_platform_serial_table);
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 52d82d2..8d262bc 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -368,6 +368,18 @@
writeb(value, p->membase + offset);
}
+static void mem16_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = offset << p->regshift;
+ writew(value, p->membase + offset);
+}
+
+static unsigned int mem16_serial_in(struct uart_port *p, int offset)
+{
+ offset = offset << p->regshift;
+ return readw(p->membase + offset);
+}
+
static void mem32_serial_out(struct uart_port *p, int offset, int value)
{
offset = offset << p->regshift;
@@ -425,6 +437,11 @@
p->serial_out = mem_serial_out;
break;
+ case UPIO_MEM16:
+ p->serial_in = mem16_serial_in;
+ p->serial_out = mem16_serial_out;
+ break;
+
case UPIO_MEM32:
p->serial_in = mem32_serial_in;
p->serial_out = mem32_serial_out;
@@ -459,6 +476,7 @@
{
switch (p->iotype) {
case UPIO_MEM:
+ case UPIO_MEM16:
case UPIO_MEM32:
case UPIO_MEM32BE:
case UPIO_AU:
@@ -2462,6 +2480,7 @@
case UPIO_TSI:
case UPIO_MEM32:
case UPIO_MEM32BE:
+ case UPIO_MEM16:
case UPIO_MEM:
if (!port->mapbase)
break;
@@ -2499,6 +2518,7 @@
case UPIO_TSI:
case UPIO_MEM32:
case UPIO_MEM32BE:
+ case UPIO_MEM16:
case UPIO_MEM:
if (!port->mapbase)
break;
diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index 245edbb..bab6b3a 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -13,6 +13,7 @@
*/
#include <linux/clk.h>
+#include <linux/console.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
@@ -34,6 +35,29 @@
spinlock_t atomic_write_lock;
};
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+static int __init uniphier_early_console_setup(struct earlycon_device *device,
+ const char *options)
+{
+ if (!device->port.membase)
+ return -ENODEV;
+
+ /* This hardware always expects MMIO32 register interface. */
+ device->port.iotype = UPIO_MEM32;
+ device->port.regshift = 2;
+
+ /*
+ * Do not touch the divisor register in early_serial8250_setup();
+ * we assume it has been initialized by a boot loader.
+ */
+ device->baud = 0;
+
+ return early_serial8250_setup(device, options);
+}
+OF_EARLYCON_DECLARE(uniphier, "socionext,uniphier-uart",
+ uniphier_early_console_setup);
+#endif
+
/*
* The register map is slightly different from that of 8250.
* IO callbacks must be overridden for correct access to FCR, LCR, and MCR.
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index 6412f14..b03cb517 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -361,9 +361,8 @@
config SERIAL_8250_INGENIC
bool "Support for Ingenic SoC serial ports"
- depends on SERIAL_8250_CONSOLE && OF_FLATTREE
+ depends on OF_FLATTREE
select LIBFDT
- select SERIAL_EARLYCON
help
If you have a system using an Ingenic SoC and wish to make use of
its UARTs, say Y to this option. If unsure, say N.
@@ -372,9 +371,18 @@
tristate "Support for serial ports on Intel MID platforms"
depends on SERIAL_8250 && PCI
select HSU_DMA if SERIAL_8250_DMA
- select HSU_DMA_PCI if X86_INTEL_MID
+ select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID)
select RATIONAL
help
Selecting this option will enable handling of the extra features
present on the UART found on Intel Medfield SOC and various other
Intel platforms.
+
+config SERIAL_OF_PLATFORM
+ tristate "Devicetree based probing for 8250 ports"
+ depends on SERIAL_8250 && OF
+ help
+ This option is used for all 8250 compatible serial ports that
+ are probed through devicetree, including Open Firmware based
+ PowerPC systems and embedded systems on architectures using the
+ flattened device tree format.
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index e177f86..b9b9bca 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -28,5 +28,6 @@
obj-$(CONFIG_SERIAL_8250_UNIPHIER) += 8250_uniphier.o
obj-$(CONFIG_SERIAL_8250_INGENIC) += 8250_ingenic.o
obj-$(CONFIG_SERIAL_8250_MID) += 8250_mid.o
+obj-$(CONFIG_SERIAL_OF_PLATFORM) += 8250_of.o
CFLAGS_8250_ingenic.o += -I$(srctree)/scripts/dtc/libfdt
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index f38beb2..d27a0c6 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -115,6 +115,7 @@
config SERIAL_ATMEL
bool "AT91 / AT32 on-chip serial port support"
+ depends on HAS_DMA
depends on ARCH_AT91 || AVR32 || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
@@ -571,9 +572,11 @@
config SERIAL_IMX
tristate "IMX serial port support"
+ depends on HAS_DMA
depends on ARCH_MXC || COMPILE_TEST
select SERIAL_CORE
select RATIONAL
+ select SERIAL_MCTRL_GPIO if GPIOLIB
help
If you have a machine based on a Motorola IMX CPU you
can enable its onboard serial port by enabling this option.
@@ -1094,16 +1097,6 @@
If you have enabled the serial port on the Hilscher NetX SoC
you can make it the console by answering Y to this option.
-config SERIAL_OF_PLATFORM
- tristate "Serial port on Open Firmware platform bus"
- depends on OF
- depends on SERIAL_8250 || SERIAL_OF_PLATFORM_NWPSERIAL
- help
- If you have a PowerPC based system that has serial ports
- on a platform specific bus, you should enable this option.
- Currently, only 8250 compatible ports are supported, but
- others can easily be added.
-
config SERIAL_OMAP
tristate "OMAP serial port support"
depends on ARCH_OMAP2PLUS
@@ -1131,23 +1124,6 @@
your boot loader about how to pass options to the kernel at
boot time.)
-config SERIAL_OF_PLATFORM_NWPSERIAL
- tristate "NWP serial port driver"
- depends on PPC_DCR
- select SERIAL_OF_PLATFORM
- select SERIAL_CORE_CONSOLE
- select SERIAL_CORE
- help
- This driver supports the cell network processor nwp serial
- device.
-
-config SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE
- bool "Console on NWP serial port"
- depends on SERIAL_OF_PLATFORM_NWPSERIAL=y
- select SERIAL_CORE_CONSOLE
- help
- Support for Console on the NWP serial ports.
-
config SERIAL_LANTIQ
bool "Lantiq serial driver"
depends on LANTIQ
@@ -1409,8 +1385,9 @@
warnings and which allows logins in single user mode).
config SERIAL_MXS_AUART
- depends on ARCH_MXS || COMPILE_TEST
tristate "MXS AUART support"
+ depends on HAS_DMA
+ depends on ARCH_MXS || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 5ab4111..b391c9b 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -63,8 +63,6 @@
obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
obj-$(CONFIG_SERIAL_MSM) += msm_serial.o
obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
-obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o
-obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o
obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 899a771..c0da0cc 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -60,6 +60,8 @@
#include <linux/io.h>
#include <linux/acpi.h>
+#include "amba-pl011.h"
+
#define UART_NR 14
#define SERIAL_AMBA_MAJOR 204
@@ -71,11 +73,27 @@
#define UART_DR_ERROR (UART011_DR_OE|UART011_DR_BE|UART011_DR_PE|UART011_DR_FE)
#define UART_DUMMY_DR_RX (1 << 16)
+static u16 pl011_std_offsets[REG_ARRAY_SIZE] = {
+ [REG_DR] = UART01x_DR,
+ [REG_FR] = UART01x_FR,
+ [REG_LCRH_RX] = UART011_LCRH,
+ [REG_LCRH_TX] = UART011_LCRH,
+ [REG_IBRD] = UART011_IBRD,
+ [REG_FBRD] = UART011_FBRD,
+ [REG_CR] = UART011_CR,
+ [REG_IFLS] = UART011_IFLS,
+ [REG_IMSC] = UART011_IMSC,
+ [REG_RIS] = UART011_RIS,
+ [REG_MIS] = UART011_MIS,
+ [REG_ICR] = UART011_ICR,
+ [REG_DMACR] = UART011_DMACR,
+};
+
/* There is by now at least one vendor with differing details, so handle it */
struct vendor_data {
+ const u16 *reg_offset;
unsigned int ifls;
- unsigned int lcrh_tx;
- unsigned int lcrh_rx;
+ bool access_32b;
bool oversampling;
bool dma_threshold;
bool cts_event_workaround;
@@ -91,9 +109,8 @@
}
static struct vendor_data vendor_arm = {
+ .reg_offset = pl011_std_offsets,
.ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8,
- .lcrh_tx = UART011_LCRH,
- .lcrh_rx = UART011_LCRH,
.oversampling = false,
.dma_threshold = false,
.cts_event_workaround = false,
@@ -103,6 +120,7 @@
};
static struct vendor_data vendor_sbsa = {
+ .reg_offset = pl011_std_offsets,
.oversampling = false,
.dma_threshold = false,
.cts_event_workaround = false,
@@ -110,15 +128,41 @@
.fixed_options = true,
};
+static u16 pl011_st_offsets[REG_ARRAY_SIZE] = {
+ [REG_DR] = UART01x_DR,
+ [REG_ST_DMAWM] = ST_UART011_DMAWM,
+ [REG_ST_TIMEOUT] = ST_UART011_TIMEOUT,
+ [REG_FR] = UART01x_FR,
+ [REG_LCRH_RX] = ST_UART011_LCRH_RX,
+ [REG_LCRH_TX] = ST_UART011_LCRH_TX,
+ [REG_IBRD] = UART011_IBRD,
+ [REG_FBRD] = UART011_FBRD,
+ [REG_CR] = UART011_CR,
+ [REG_IFLS] = UART011_IFLS,
+ [REG_IMSC] = UART011_IMSC,
+ [REG_RIS] = UART011_RIS,
+ [REG_MIS] = UART011_MIS,
+ [REG_ICR] = UART011_ICR,
+ [REG_DMACR] = UART011_DMACR,
+ [REG_ST_XFCR] = ST_UART011_XFCR,
+ [REG_ST_XON1] = ST_UART011_XON1,
+ [REG_ST_XON2] = ST_UART011_XON2,
+ [REG_ST_XOFF1] = ST_UART011_XOFF1,
+ [REG_ST_XOFF2] = ST_UART011_XOFF2,
+ [REG_ST_ITCR] = ST_UART011_ITCR,
+ [REG_ST_ITIP] = ST_UART011_ITIP,
+ [REG_ST_ABCR] = ST_UART011_ABCR,
+ [REG_ST_ABIMSC] = ST_UART011_ABIMSC,
+};
+
static unsigned int get_fifosize_st(struct amba_device *dev)
{
return 64;
}
static struct vendor_data vendor_st = {
+ .reg_offset = pl011_st_offsets,
.ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF,
- .lcrh_tx = ST_UART011_LCRH_TX,
- .lcrh_rx = ST_UART011_LCRH_RX,
.oversampling = true,
.dma_threshold = true,
.cts_event_workaround = true,
@@ -127,6 +171,29 @@
.get_fifosize = get_fifosize_st,
};
+static const u16 pl011_zte_offsets[REG_ARRAY_SIZE] = {
+ [REG_DR] = ZX_UART011_DR,
+ [REG_FR] = ZX_UART011_FR,
+ [REG_LCRH_RX] = ZX_UART011_LCRH,
+ [REG_LCRH_TX] = ZX_UART011_LCRH,
+ [REG_IBRD] = ZX_UART011_IBRD,
+ [REG_FBRD] = ZX_UART011_FBRD,
+ [REG_CR] = ZX_UART011_CR,
+ [REG_IFLS] = ZX_UART011_IFLS,
+ [REG_IMSC] = ZX_UART011_IMSC,
+ [REG_RIS] = ZX_UART011_RIS,
+ [REG_MIS] = ZX_UART011_MIS,
+ [REG_ICR] = ZX_UART011_ICR,
+ [REG_DMACR] = ZX_UART011_DMACR,
+};
+
+static struct vendor_data vendor_zte = {
+ .reg_offset = pl011_zte_offsets,
+ .access_32b = true,
+ .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8,
+ .get_fifosize = get_fifosize_arm,
+};
+
/* Deals with DMA transactions */
struct pl011_sgbuf {
@@ -162,14 +229,13 @@
*/
struct uart_amba_port {
struct uart_port port;
+ const u16 *reg_offset;
struct clk *clk;
const struct vendor_data *vendor;
unsigned int dmacr; /* dma control reg */
unsigned int im; /* interrupt mask */
unsigned int old_status;
unsigned int fifosize; /* vendor-specific */
- unsigned int lcrh_tx; /* vendor-specific */
- unsigned int lcrh_rx; /* vendor-specific */
unsigned int old_cr; /* state during shutdown */
bool autorts;
unsigned int fixed_baud; /* vendor-set fixed baud rate */
@@ -184,6 +250,32 @@
#endif
};
+static unsigned int pl011_reg_to_offset(const struct uart_amba_port *uap,
+ unsigned int reg)
+{
+ return uap->reg_offset[reg];
+}
+
+static unsigned int pl011_read(const struct uart_amba_port *uap,
+ unsigned int reg)
+{
+ void __iomem *addr = uap->port.membase + pl011_reg_to_offset(uap, reg);
+
+ return (uap->port.iotype == UPIO_MEM32) ?
+ readl_relaxed(addr) : readw_relaxed(addr);
+}
+
+static void pl011_write(unsigned int val, const struct uart_amba_port *uap,
+ unsigned int reg)
+{
+ void __iomem *addr = uap->port.membase + pl011_reg_to_offset(uap, reg);
+
+ if (uap->port.iotype == UPIO_MEM32)
+ writel_relaxed(val, addr);
+ else
+ writew_relaxed(val, addr);
+}
+
/*
* Reads up to 256 characters from the FIFO or until it's empty and
* inserts them into the TTY layer. Returns the number of characters
@@ -196,13 +288,12 @@
int fifotaken = 0;
while (max_count--) {
- status = readw(uap->port.membase + UART01x_FR);
+ status = pl011_read(uap, REG_FR);
if (status & UART01x_FR_RXFE)
break;
/* Take chars from the FIFO and update status */
- ch = readw(uap->port.membase + UART01x_DR) |
- UART_DUMMY_DR_RX;
+ ch = pl011_read(uap, REG_DR) | UART_DUMMY_DR_RX;
flag = TTY_NORMAL;
uap->port.icount.rx++;
fifotaken++;
@@ -284,7 +375,8 @@
struct amba_pl011_data *plat = dev_get_platdata(uap->port.dev);
struct device *dev = uap->port.dev;
struct dma_slave_config tx_conf = {
- .dst_addr = uap->port.mapbase + UART01x_DR,
+ .dst_addr = uap->port.mapbase +
+ pl011_reg_to_offset(uap, REG_DR),
.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
.direction = DMA_MEM_TO_DEV,
.dst_maxburst = uap->fifosize >> 1,
@@ -339,7 +431,8 @@
if (chan) {
struct dma_slave_config rx_conf = {
- .src_addr = uap->port.mapbase + UART01x_DR,
+ .src_addr = uap->port.mapbase +
+ pl011_reg_to_offset(uap, REG_DR),
.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
.direction = DMA_DEV_TO_MEM,
.src_maxburst = uap->fifosize >> 2,
@@ -438,7 +531,7 @@
dmacr = uap->dmacr;
uap->dmacr = dmacr & ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
/*
* If TX DMA was disabled, it means that we've stopped the DMA for
@@ -552,7 +645,7 @@
dma_dev->device_issue_pending(chan);
uap->dmacr |= UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
uap->dmatx.queued = true;
/*
@@ -588,9 +681,9 @@
*/
if (uap->dmatx.queued) {
uap->dmacr |= UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
return true;
}
@@ -600,7 +693,7 @@
*/
if (pl011_dma_tx_refill(uap) > 0) {
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
return true;
}
return false;
@@ -614,7 +707,7 @@
{
if (uap->dmatx.queued) {
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
}
}
@@ -640,14 +733,12 @@
if (!uap->dmatx.queued) {
if (pl011_dma_tx_refill(uap) > 0) {
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase +
- UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
} else
ret = false;
} else if (!(uap->dmacr & UART011_TXDMAE)) {
uap->dmacr |= UART011_TXDMAE;
- writew(uap->dmacr,
- uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
}
return ret;
}
@@ -658,9 +749,9 @@
*/
dmacr = uap->dmacr;
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
- if (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF) {
+ if (pl011_read(uap, REG_FR) & UART01x_FR_TXFF) {
/*
* No space in the FIFO, so enable the transmit interrupt
* so we know when there is space. Note that once we've
@@ -669,13 +760,13 @@
return false;
}
- writew(uap->port.x_char, uap->port.membase + UART01x_DR);
+ pl011_write(uap->port.x_char, uap, REG_DR);
uap->port.icount.tx++;
uap->port.x_char = 0;
/* Success - restore the DMA state */
uap->dmacr = dmacr;
- writew(dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(dmacr, uap, REG_DMACR);
return true;
}
@@ -703,7 +794,7 @@
DMA_TO_DEVICE);
uap->dmatx.queued = false;
uap->dmacr &= ~UART011_TXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
}
}
@@ -743,11 +834,11 @@
dma_async_issue_pending(rxchan);
uap->dmacr |= UART011_RXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
uap->dmarx.running = true;
uap->im &= ~UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
return 0;
}
@@ -805,8 +896,8 @@
*/
if (dma_count == pending && readfifo) {
/* Clear any error flags */
- writew(UART011_OEIS | UART011_BEIS | UART011_PEIS | UART011_FEIS,
- uap->port.membase + UART011_ICR);
+ pl011_write(UART011_OEIS | UART011_BEIS | UART011_PEIS |
+ UART011_FEIS, uap, REG_ICR);
/*
* If we read all the DMA'd characters, and we had an
@@ -854,7 +945,7 @@
/* Disable RX DMA - incoming data will wait in the FIFO */
uap->dmacr &= ~UART011_RXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
uap->dmarx.running = false;
pending = sgbuf->sg.length - state.residue;
@@ -874,7 +965,7 @@
dev_dbg(uap->port.dev, "could not retrigger RX DMA job "
"fall back to interrupt mode\n");
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
}
}
@@ -922,7 +1013,7 @@
dev_dbg(uap->port.dev, "could not retrigger RX DMA job "
"fall back to interrupt mode\n");
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
}
}
@@ -935,7 +1026,7 @@
{
/* FIXME. Just disable the DMA enable */
uap->dmacr &= ~UART011_RXDMAE;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
}
/*
@@ -979,7 +1070,7 @@
spin_lock_irqsave(&uap->port.lock, flags);
pl011_dma_rx_stop(uap);
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
spin_unlock_irqrestore(&uap->port.lock, flags);
uap->dmarx.running = false;
@@ -1041,7 +1132,7 @@
skip_rx:
/* Turn on DMA error (RX/TX will be enabled on demand) */
uap->dmacr |= UART011_DMAONERR;
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
/*
* ST Micro variants has some specific dma burst threshold
@@ -1049,8 +1140,8 @@
* be issued above/below 16 bytes.
*/
if (uap->vendor->dma_threshold)
- writew(ST_UART011_DMAWM_RX_16 | ST_UART011_DMAWM_TX_16,
- uap->port.membase + ST_UART011_DMAWM);
+ pl011_write(ST_UART011_DMAWM_RX_16 | ST_UART011_DMAWM_TX_16,
+ uap, REG_ST_DMAWM);
if (uap->using_rx_dma) {
if (pl011_dma_rx_trigger_dma(uap))
@@ -1075,12 +1166,12 @@
return;
/* Disable RX and TX DMA */
- while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
+ while (pl011_read(uap, REG_FR) & UART01x_FR_BUSY)
barrier();
spin_lock_irq(&uap->port.lock);
uap->dmacr &= ~(UART011_DMAONERR | UART011_RXDMAE | UART011_TXDMAE);
- writew(uap->dmacr, uap->port.membase + UART011_DMACR);
+ pl011_write(uap->dmacr, uap, REG_DMACR);
spin_unlock_irq(&uap->port.lock);
if (uap->using_tx_dma) {
@@ -1181,7 +1272,7 @@
container_of(port, struct uart_amba_port, port);
uap->im &= ~UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
pl011_dma_tx_stop(uap);
}
@@ -1191,7 +1282,7 @@
static void pl011_start_tx_pio(struct uart_amba_port *uap)
{
uap->im |= UART011_TXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
pl011_tx_chars(uap, false);
}
@@ -1211,7 +1302,7 @@
uap->im &= ~(UART011_RXIM|UART011_RTIM|UART011_FEIM|
UART011_PEIM|UART011_BEIM|UART011_OEIM);
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
pl011_dma_rx_stop(uap);
}
@@ -1222,7 +1313,7 @@
container_of(port, struct uart_amba_port, port);
uap->im |= UART011_RIMIM|UART011_CTSMIM|UART011_DCDMIM|UART011_DSRMIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
}
static void pl011_rx_chars(struct uart_amba_port *uap)
@@ -1242,7 +1333,7 @@
dev_dbg(uap->port.dev, "could not trigger RX DMA job "
"fall back to interrupt mode again\n");
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
} else {
#ifdef CONFIG_DMA_ENGINE
/* Start Rx DMA poll */
@@ -1263,10 +1354,10 @@
bool from_irq)
{
if (unlikely(!from_irq) &&
- readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ pl011_read(uap, REG_FR) & UART01x_FR_TXFF)
return false; /* unable to transmit character */
- writew(c, uap->port.membase + UART01x_DR);
+ pl011_write(c, uap, REG_DR);
uap->port.icount.tx++;
return true;
@@ -1313,7 +1404,7 @@
{
unsigned int status, delta;
- status = readw(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ status = pl011_read(uap, REG_FR) & UART01x_FR_MODEM_ANY;
delta = status ^ uap->old_status;
uap->old_status = status;
@@ -1341,15 +1432,15 @@
return;
/* workaround to make sure that all bits are unlocked.. */
- writew(0x00, uap->port.membase + UART011_ICR);
+ pl011_write(0x00, uap, REG_ICR);
/*
* WA: introduce 26ns(1 uart clk) delay before W1C;
* single apb access will incur 2 pclk(133.12Mhz) delay,
* so add 2 dummy reads
*/
- dummy_read = readw(uap->port.membase + UART011_ICR);
- dummy_read = readw(uap->port.membase + UART011_ICR);
+ dummy_read = pl011_read(uap, REG_ICR);
+ dummy_read = pl011_read(uap, REG_ICR);
}
static irqreturn_t pl011_int(int irq, void *dev_id)
@@ -1361,15 +1452,15 @@
int handled = 0;
spin_lock_irqsave(&uap->port.lock, flags);
- imsc = readw(uap->port.membase + UART011_IMSC);
- status = readw(uap->port.membase + UART011_RIS) & imsc;
+ imsc = pl011_read(uap, REG_IMSC);
+ status = pl011_read(uap, REG_RIS) & imsc;
if (status) {
do {
check_apply_cts_event_workaround(uap);
- writew(status & ~(UART011_TXIS|UART011_RTIS|
- UART011_RXIS),
- uap->port.membase + UART011_ICR);
+ pl011_write(status & ~(UART011_TXIS|UART011_RTIS|
+ UART011_RXIS),
+ uap, REG_ICR);
if (status & (UART011_RTIS|UART011_RXIS)) {
if (pl011_dma_rx_running(uap))
@@ -1386,7 +1477,7 @@
if (pass_counter-- == 0)
break;
- status = readw(uap->port.membase + UART011_RIS) & imsc;
+ status = pl011_read(uap, REG_RIS) & imsc;
} while (status != 0);
handled = 1;
}
@@ -1400,7 +1491,7 @@
{
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
- unsigned int status = readw(uap->port.membase + UART01x_FR);
+ unsigned int status = pl011_read(uap, REG_FR);
return status & (UART01x_FR_BUSY|UART01x_FR_TXFF) ? 0 : TIOCSER_TEMT;
}
@@ -1409,7 +1500,7 @@
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int result = 0;
- unsigned int status = readw(uap->port.membase + UART01x_FR);
+ unsigned int status = pl011_read(uap, REG_FR);
#define TIOCMBIT(uartbit, tiocmbit) \
if (status & uartbit) \
@@ -1429,7 +1520,7 @@
container_of(port, struct uart_amba_port, port);
unsigned int cr;
- cr = readw(uap->port.membase + UART011_CR);
+ cr = pl011_read(uap, REG_CR);
#define TIOCMBIT(tiocmbit, uartbit) \
if (mctrl & tiocmbit) \
@@ -1449,7 +1540,7 @@
}
#undef TIOCMBIT
- writew(cr, uap->port.membase + UART011_CR);
+ pl011_write(cr, uap, REG_CR);
}
static void pl011_break_ctl(struct uart_port *port, int break_state)
@@ -1460,12 +1551,12 @@
unsigned int lcr_h;
spin_lock_irqsave(&uap->port.lock, flags);
- lcr_h = readw(uap->port.membase + uap->lcrh_tx);
+ lcr_h = pl011_read(uap, REG_LCRH_TX);
if (break_state == -1)
lcr_h |= UART01x_LCRH_BRK;
else
lcr_h &= ~UART01x_LCRH_BRK;
- writew(lcr_h, uap->port.membase + uap->lcrh_tx);
+ pl011_write(lcr_h, uap, REG_LCRH_TX);
spin_unlock_irqrestore(&uap->port.lock, flags);
}
@@ -1475,9 +1566,8 @@
{
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
- unsigned char __iomem *regs = uap->port.membase;
- writew(readw(regs + UART011_MIS), regs + UART011_ICR);
+ pl011_write(pl011_read(uap, REG_MIS), uap, REG_ICR);
/*
* There is no way to clear TXIM as this is "ready to transmit IRQ", so
* we simply mask it. start_tx() will unmask it.
@@ -1491,7 +1581,8 @@
* (including tx queue), so we're also fine with start_tx()'s caller
* side.
*/
- writew(readw(regs + UART011_IMSC) & ~UART011_TXIM, regs + UART011_IMSC);
+ pl011_write(pl011_read(uap, REG_IMSC) & ~UART011_TXIM, uap,
+ REG_IMSC);
}
static int pl011_get_poll_char(struct uart_port *port)
@@ -1506,11 +1597,11 @@
*/
pl011_quiesce_irqs(port);
- status = readw(uap->port.membase + UART01x_FR);
+ status = pl011_read(uap, REG_FR);
if (status & UART01x_FR_RXFE)
return NO_POLL_CHAR;
- return readw(uap->port.membase + UART01x_DR);
+ return pl011_read(uap, REG_DR);
}
static void pl011_put_poll_char(struct uart_port *port,
@@ -1519,10 +1610,10 @@
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
- while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ while (pl011_read(uap, REG_FR) & UART01x_FR_TXFF)
barrier();
- writew(ch, uap->port.membase + UART01x_DR);
+ pl011_write(ch, uap, REG_DR);
}
#endif /* CONFIG_CONSOLE_POLL */
@@ -1546,15 +1637,16 @@
uap->port.uartclk = clk_get_rate(uap->clk);
/* Clear pending error and receive interrupts */
- writew(UART011_OEIS | UART011_BEIS | UART011_PEIS | UART011_FEIS |
- UART011_RTIS | UART011_RXIS, uap->port.membase + UART011_ICR);
+ pl011_write(UART011_OEIS | UART011_BEIS | UART011_PEIS |
+ UART011_FEIS | UART011_RTIS | UART011_RXIS,
+ uap, REG_ICR);
/*
* Save interrupts enable mask, and enable RX interrupts in case if
* the interrupt is used for NMI entry.
*/
- uap->im = readw(uap->port.membase + UART011_IMSC);
- writew(UART011_RTIM | UART011_RXIM, uap->port.membase + UART011_IMSC);
+ uap->im = pl011_read(uap, REG_IMSC);
+ pl011_write(UART011_RTIM | UART011_RXIM, uap, REG_IMSC);
if (dev_get_platdata(uap->port.dev)) {
struct amba_pl011_data *plat;
@@ -1566,24 +1658,30 @@
return 0;
}
+static bool pl011_split_lcrh(const struct uart_amba_port *uap)
+{
+ return pl011_reg_to_offset(uap, REG_LCRH_RX) !=
+ pl011_reg_to_offset(uap, REG_LCRH_TX);
+}
+
static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h)
{
- writew(lcr_h, uap->port.membase + uap->lcrh_rx);
- if (uap->lcrh_rx != uap->lcrh_tx) {
+ pl011_write(lcr_h, uap, REG_LCRH_RX);
+ if (pl011_split_lcrh(uap)) {
int i;
/*
* Wait 10 PCLKs before writing LCRH_TX register,
* to get this delay write read only register 10 times
*/
for (i = 0; i < 10; ++i)
- writew(0xff, uap->port.membase + UART011_MIS);
- writew(lcr_h, uap->port.membase + uap->lcrh_tx);
+ pl011_write(0xff, uap, REG_MIS);
+ pl011_write(lcr_h, uap, REG_LCRH_TX);
}
}
static int pl011_allocate_irq(struct uart_amba_port *uap)
{
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
return request_irq(uap->port.irq, pl011_int, 0, "uart-pl011", uap);
}
@@ -1598,12 +1696,11 @@
spin_lock_irq(&uap->port.lock);
/* Clear out any spuriously appearing RX interrupts */
- writew(UART011_RTIS | UART011_RXIS,
- uap->port.membase + UART011_ICR);
+ pl011_write(UART011_RTIS | UART011_RXIS, uap, REG_ICR);
uap->im = UART011_RTIM;
if (!pl011_dma_rx_running(uap))
uap->im |= UART011_RXIM;
- writew(uap->im, uap->port.membase + UART011_IMSC);
+ pl011_write(uap->im, uap, REG_IMSC);
spin_unlock_irq(&uap->port.lock);
}
@@ -1622,21 +1719,21 @@
if (retval)
goto clk_dis;
- writew(uap->vendor->ifls, uap->port.membase + UART011_IFLS);
+ pl011_write(uap->vendor->ifls, uap, REG_IFLS);
spin_lock_irq(&uap->port.lock);
/* restore RTS and DTR */
cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
- writew(cr, uap->port.membase + UART011_CR);
+ pl011_write(cr, uap, REG_CR);
spin_unlock_irq(&uap->port.lock);
/*
* initialise the old status of the modem signals
*/
- uap->old_status = readw(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ uap->old_status = pl011_read(uap, REG_FR) & UART01x_FR_MODEM_ANY;
/* Startup DMA */
pl011_dma_startup(uap);
@@ -1677,9 +1774,9 @@
{
unsigned long val;
- val = readw(uap->port.membase + lcrh);
+ val = pl011_read(uap, lcrh);
val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN);
- writew(val, uap->port.membase + lcrh);
+ pl011_write(val, uap, lcrh);
}
/*
@@ -1693,19 +1790,19 @@
uap->autorts = false;
spin_lock_irq(&uap->port.lock);
- cr = readw(uap->port.membase + UART011_CR);
+ cr = pl011_read(uap, REG_CR);
uap->old_cr = cr;
cr &= UART011_CR_RTS | UART011_CR_DTR;
cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
- writew(cr, uap->port.membase + UART011_CR);
+ pl011_write(cr, uap, REG_CR);
spin_unlock_irq(&uap->port.lock);
/*
* disable break condition and fifos
*/
- pl011_shutdown_channel(uap, uap->lcrh_rx);
- if (uap->lcrh_rx != uap->lcrh_tx)
- pl011_shutdown_channel(uap, uap->lcrh_tx);
+ pl011_shutdown_channel(uap, REG_LCRH_RX);
+ if (pl011_split_lcrh(uap))
+ pl011_shutdown_channel(uap, REG_LCRH_TX);
}
static void pl011_disable_interrupts(struct uart_amba_port *uap)
@@ -1714,8 +1811,8 @@
/* mask all interrupts and clear all pending ones */
uap->im = 0;
- writew(uap->im, uap->port.membase + UART011_IMSC);
- writew(0xffff, uap->port.membase + UART011_ICR);
+ pl011_write(uap->im, uap, REG_IMSC);
+ pl011_write(0xffff, uap, REG_ICR);
spin_unlock_irq(&uap->port.lock);
}
@@ -1867,8 +1964,8 @@
pl011_enable_ms(port);
/* first, disable everything */
- old_cr = readw(port->membase + UART011_CR);
- writew(0, port->membase + UART011_CR);
+ old_cr = pl011_read(uap, REG_CR);
+ pl011_write(0, uap, REG_CR);
if (termios->c_cflag & CRTSCTS) {
if (old_cr & UART011_CR_RTS)
@@ -1901,17 +1998,17 @@
quot -= 2;
}
/* Set baud rate */
- writew(quot & 0x3f, port->membase + UART011_FBRD);
- writew(quot >> 6, port->membase + UART011_IBRD);
+ pl011_write(quot & 0x3f, uap, REG_FBRD);
+ pl011_write(quot >> 6, uap, REG_IBRD);
/*
* ----------v----------v----------v----------v-----
- * NOTE: lcrh_tx and lcrh_rx MUST BE WRITTEN AFTER
- * UART011_FBRD & UART011_IBRD.
+ * NOTE: REG_LCRH_TX and REG_LCRH_RX MUST BE WRITTEN AFTER
+ * REG_FBRD & REG_IBRD.
* ----------^----------^----------^----------^-----
*/
pl011_write_lcr_h(uap, lcr_h);
- writew(old_cr, port->membase + UART011_CR);
+ pl011_write(old_cr, uap, REG_CR);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -2052,9 +2149,9 @@
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
- while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF)
+ while (pl011_read(uap, REG_FR) & UART01x_FR_TXFF)
barrier();
- writew(ch, uap->port.membase + UART01x_DR);
+ pl011_write(ch, uap, REG_DR);
}
static void
@@ -2079,10 +2176,10 @@
* First save the CR then disable the interrupts
*/
if (!uap->vendor->always_enabled) {
- old_cr = readw(uap->port.membase + UART011_CR);
+ old_cr = pl011_read(uap, REG_CR);
new_cr = old_cr & ~UART011_CR_CTSEN;
new_cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
- writew(new_cr, uap->port.membase + UART011_CR);
+ pl011_write(new_cr, uap, REG_CR);
}
uart_console_write(&uap->port, s, count, pl011_console_putchar);
@@ -2092,10 +2189,10 @@
* and restore the TCR
*/
do {
- status = readw(uap->port.membase + UART01x_FR);
+ status = pl011_read(uap, REG_FR);
} while (status & UART01x_FR_BUSY);
if (!uap->vendor->always_enabled)
- writew(old_cr, uap->port.membase + UART011_CR);
+ pl011_write(old_cr, uap, REG_CR);
if (locked)
spin_unlock(&uap->port.lock);
@@ -2108,10 +2205,10 @@
pl011_console_get_options(struct uart_amba_port *uap, int *baud,
int *parity, int *bits)
{
- if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) {
+ if (pl011_read(uap, REG_CR) & UART01x_CR_UARTEN) {
unsigned int lcr_h, ibrd, fbrd;
- lcr_h = readw(uap->port.membase + uap->lcrh_tx);
+ lcr_h = pl011_read(uap, REG_LCRH_TX);
*parity = 'n';
if (lcr_h & UART01x_LCRH_PEN) {
@@ -2126,13 +2223,13 @@
else
*bits = 8;
- ibrd = readw(uap->port.membase + UART011_IBRD);
- fbrd = readw(uap->port.membase + UART011_FBRD);
+ ibrd = pl011_read(uap, REG_IBRD);
+ fbrd = pl011_read(uap, REG_FBRD);
*baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd);
if (uap->vendor->oversampling) {
- if (readw(uap->port.membase + UART011_CR)
+ if (pl011_read(uap, REG_CR)
& ST_UART011_CR_OVSFACT)
*baud *= 2;
}
@@ -2206,7 +2303,10 @@
{
while (readl(port->membase + UART01x_FR) & UART01x_FR_TXFF)
;
- writeb(c, port->membase + UART01x_DR);
+ if (port->iotype == UPIO_MEM32)
+ writel(c, port->membase + UART01x_DR);
+ else
+ writeb(c, port->membase + UART01x_DR);
while (readl(port->membase + UART01x_FR) & UART01x_FR_BUSY)
;
}
@@ -2319,7 +2419,6 @@
uap->port.dev = dev;
uap->port.mapbase = mmiobase->start;
uap->port.membase = base;
- uap->port.iotype = UPIO_MEM;
uap->port.fifosize = uap->fifosize;
uap->port.flags = UPF_BOOT_AUTOCONF;
uap->port.line = index;
@@ -2334,8 +2433,8 @@
int ret;
/* Ensure interrupts from this UART are masked and cleared */
- writew(0, uap->port.membase + UART011_IMSC);
- writew(0xffff, uap->port.membase + UART011_ICR);
+ pl011_write(0, uap, REG_IMSC);
+ pl011_write(0xffff, uap, REG_ICR);
if (!amba_reg.state) {
ret = uart_register_driver(&amba_reg);
@@ -2372,10 +2471,10 @@
if (IS_ERR(uap->clk))
return PTR_ERR(uap->clk);
+ uap->reg_offset = vendor->reg_offset;
uap->vendor = vendor;
- uap->lcrh_rx = vendor->lcrh_rx;
- uap->lcrh_tx = vendor->lcrh_tx;
uap->fifosize = vendor->get_fifosize(dev);
+ uap->port.iotype = vendor->access_32b ? UPIO_MEM32 : UPIO_MEM;
uap->port.irq = dev->irq[0];
uap->port.ops = &amba_pl011_pops;
@@ -2453,8 +2552,10 @@
if (!uap)
return -ENOMEM;
+ uap->reg_offset = vendor_sbsa.reg_offset;
uap->vendor = &vendor_sbsa;
uap->fifosize = 32;
+ uap->port.iotype = vendor_sbsa.access_32b ? UPIO_MEM32 : UPIO_MEM;
uap->port.irq = platform_get_irq(pdev, 0);
uap->port.ops = &sbsa_uart_pops;
uap->fixed_baud = baudrate;
diff --git a/drivers/tty/serial/amba-pl011.h b/drivers/tty/serial/amba-pl011.h
new file mode 100644
index 0000000..411c60e
--- /dev/null
+++ b/drivers/tty/serial/amba-pl011.h
@@ -0,0 +1,34 @@
+#ifndef AMBA_PL011_H
+#define AMBA_PL011_H
+
+enum {
+ REG_DR,
+ REG_ST_DMAWM,
+ REG_ST_TIMEOUT,
+ REG_FR,
+ REG_LCRH_RX,
+ REG_LCRH_TX,
+ REG_IBRD,
+ REG_FBRD,
+ REG_CR,
+ REG_IFLS,
+ REG_IMSC,
+ REG_RIS,
+ REG_MIS,
+ REG_ICR,
+ REG_DMACR,
+ REG_ST_XFCR,
+ REG_ST_XON1,
+ REG_ST_XON2,
+ REG_ST_XOFF1,
+ REG_ST_XOFF2,
+ REG_ST_ITCR,
+ REG_ST_ITIP,
+ REG_ST_ABCR,
+ REG_ST_ABIMSC,
+
+ /* The size of the array - must be last */
+ REG_ARRAY_SIZE,
+};
+
+#endif
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 9429455..1c0884d 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -22,7 +22,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
-#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/slab.h>
@@ -155,7 +154,6 @@
struct circ_buf rx_ring;
struct mctrl_gpios *gpios;
- int gpio_irq[UART_GPIO_MAX];
unsigned int tx_done_mask;
u32 fifo_size;
u32 rts_high;
@@ -190,8 +188,6 @@
{ .compatible = "atmel,at91sam9260-usart" },
{ /* sentinel */ }
};
-
-MODULE_DEVICE_TABLE(of, atmel_serial_dt_ids);
#endif
static inline struct atmel_uart_port *
@@ -550,27 +546,21 @@
atmel_port->ms_irq_enabled = true;
- if (atmel_port->gpio_irq[UART_GPIO_CTS] >= 0)
- enable_irq(atmel_port->gpio_irq[UART_GPIO_CTS]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_CTS))
ier |= ATMEL_US_CTSIC;
- if (atmel_port->gpio_irq[UART_GPIO_DSR] >= 0)
- enable_irq(atmel_port->gpio_irq[UART_GPIO_DSR]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DSR))
ier |= ATMEL_US_DSRIC;
- if (atmel_port->gpio_irq[UART_GPIO_RI] >= 0)
- enable_irq(atmel_port->gpio_irq[UART_GPIO_RI]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_RI))
ier |= ATMEL_US_RIIC;
- if (atmel_port->gpio_irq[UART_GPIO_DCD] >= 0)
- enable_irq(atmel_port->gpio_irq[UART_GPIO_DCD]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DCD))
ier |= ATMEL_US_DCDIC;
atmel_uart_writel(port, ATMEL_US_IER, ier);
+
+ mctrl_gpio_enable_ms(atmel_port->gpios);
}
/*
@@ -589,24 +579,18 @@
atmel_port->ms_irq_enabled = false;
- if (atmel_port->gpio_irq[UART_GPIO_CTS] >= 0)
- disable_irq(atmel_port->gpio_irq[UART_GPIO_CTS]);
- else
+ mctrl_gpio_disable_ms(atmel_port->gpios);
+
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_CTS))
idr |= ATMEL_US_CTSIC;
- if (atmel_port->gpio_irq[UART_GPIO_DSR] >= 0)
- disable_irq(atmel_port->gpio_irq[UART_GPIO_DSR]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DSR))
idr |= ATMEL_US_DSRIC;
- if (atmel_port->gpio_irq[UART_GPIO_RI] >= 0)
- disable_irq(atmel_port->gpio_irq[UART_GPIO_RI]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_RI))
idr |= ATMEL_US_RIIC;
- if (atmel_port->gpio_irq[UART_GPIO_DCD] >= 0)
- disable_irq(atmel_port->gpio_irq[UART_GPIO_DCD]);
- else
+ if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_DCD))
idr |= ATMEL_US_DCDIC;
atmel_uart_writel(port, ATMEL_US_IDR, idr);
@@ -1264,7 +1248,6 @@
struct uart_port *port = dev_id;
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int status, pending, mask, pass_counter = 0;
- bool gpio_handled = false;
spin_lock(&atmel_port->lock_suspended);
@@ -1272,24 +1255,6 @@
status = atmel_get_lines_status(port);
mask = atmel_uart_readl(port, ATMEL_US_IMR);
pending = status & mask;
- if (!gpio_handled) {
- /*
- * Dealing with GPIO interrupt
- */
- if (irq == atmel_port->gpio_irq[UART_GPIO_CTS])
- pending |= ATMEL_US_CTSIC;
-
- if (irq == atmel_port->gpio_irq[UART_GPIO_DSR])
- pending |= ATMEL_US_DSRIC;
-
- if (irq == atmel_port->gpio_irq[UART_GPIO_RI])
- pending |= ATMEL_US_RIIC;
-
- if (irq == atmel_port->gpio_irq[UART_GPIO_DCD])
- pending |= ATMEL_US_DCDIC;
-
- gpio_handled = true;
- }
if (!pending)
break;
@@ -1778,45 +1743,6 @@
}
}
-static void atmel_free_gpio_irq(struct uart_port *port)
-{
- struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- enum mctrl_gpio_idx i;
-
- for (i = 0; i < UART_GPIO_MAX; i++)
- if (atmel_port->gpio_irq[i] >= 0)
- free_irq(atmel_port->gpio_irq[i], port);
-}
-
-static int atmel_request_gpio_irq(struct uart_port *port)
-{
- struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- int *irq = atmel_port->gpio_irq;
- enum mctrl_gpio_idx i;
- int err = 0;
-
- for (i = 0; (i < UART_GPIO_MAX) && !err; i++) {
- if (irq[i] < 0)
- continue;
-
- irq_set_status_flags(irq[i], IRQ_NOAUTOEN);
- err = request_irq(irq[i], atmel_interrupt, IRQ_TYPE_EDGE_BOTH,
- "atmel_serial", port);
- if (err)
- dev_err(port->dev, "atmel_startup - Can't get %d irq\n",
- irq[i]);
- }
-
- /*
- * If something went wrong, rollback.
- */
- while (err && (--i >= 0))
- if (irq[i] >= 0)
- free_irq(irq[i], port);
-
- return err;
-}
-
/*
* Perform initialization and enable port for reception
*/
@@ -1846,13 +1772,6 @@
return retval;
}
- /*
- * Get the GPIO lines IRQ
- */
- retval = atmel_request_gpio_irq(port);
- if (retval)
- goto free_irq;
-
tasklet_enable(&atmel_port->tasklet);
/*
@@ -1948,11 +1867,6 @@
}
return 0;
-
-free_irq:
- free_irq(port->irq, port);
-
- return retval;
}
/*
@@ -2018,7 +1932,6 @@
* Free the interrupts
*/
free_irq(port->irq, port);
- atmel_free_gpio_irq(port);
atmel_port->ms_irq_enabled = false;
@@ -2686,26 +2599,6 @@
#define atmel_serial_resume NULL
#endif
-static int atmel_init_gpios(struct atmel_uart_port *p, struct device *dev)
-{
- enum mctrl_gpio_idx i;
- struct gpio_desc *gpiod;
-
- p->gpios = mctrl_gpio_init_noauto(dev, 0);
- if (IS_ERR(p->gpios))
- return PTR_ERR(p->gpios);
-
- for (i = 0; i < UART_GPIO_MAX; i++) {
- gpiod = mctrl_gpio_to_gpiod(p->gpios, i);
- if (gpiod && (gpiod_get_direction(gpiod) == GPIOF_DIR_IN))
- p->gpio_irq[i] = gpiod_to_irq(gpiod);
- else
- p->gpio_irq[i] = -EINVAL;
- }
-
- return 0;
-}
-
static void atmel_serial_probe_fifos(struct atmel_uart_port *port,
struct platform_device *pdev)
{
@@ -2788,16 +2681,16 @@
spin_lock_init(&port->lock_suspended);
- ret = atmel_init_gpios(port, &pdev->dev);
- if (ret < 0) {
- dev_err(&pdev->dev, "Failed to initialize GPIOs.");
- goto err_clear_bit;
- }
-
ret = atmel_init_port(port, pdev);
if (ret)
goto err_clear_bit;
+ port->gpios = mctrl_gpio_init(&port->uart, 0);
+ if (IS_ERR(port->gpios)) {
+ ret = PTR_ERR(port->gpios);
+ goto err_clear_bit;
+ }
+
if (!atmel_use_pdc_rx(&port->uart)) {
ret = -ENOMEM;
data = kmalloc(sizeof(struct atmel_uart_char)
@@ -2866,37 +2759,14 @@
return ret;
}
-static int atmel_serial_remove(struct platform_device *pdev)
-{
- struct uart_port *port = platform_get_drvdata(pdev);
- struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- int ret = 0;
-
- tasklet_kill(&atmel_port->tasklet);
-
- device_init_wakeup(&pdev->dev, 0);
-
- ret = uart_remove_one_port(&atmel_uart, port);
-
- kfree(atmel_port->rx_ring.buf);
-
- /* "port" is allocated statically, so we shouldn't free it */
-
- clear_bit(port->line, atmel_ports_in_use);
-
- clk_put(atmel_port->clk);
-
- return ret;
-}
-
static struct platform_driver atmel_serial_driver = {
.probe = atmel_serial_probe,
- .remove = atmel_serial_remove,
.suspend = atmel_serial_suspend,
.resume = atmel_serial_resume,
.driver = {
- .name = "atmel_usart",
- .of_match_table = of_match_ptr(atmel_serial_dt_ids),
+ .name = "atmel_usart",
+ .of_match_table = of_match_ptr(atmel_serial_dt_ids),
+ .suppress_bind_attrs = true,
},
};
@@ -2914,17 +2784,4 @@
return ret;
}
-
-static void __exit atmel_serial_exit(void)
-{
- platform_driver_unregister(&atmel_serial_driver);
- uart_unregister_driver(&atmel_uart);
-}
-
-module_init(atmel_serial_init);
-module_exit(atmel_serial_exit);
-
-MODULE_AUTHOR("Rick Bronson");
-MODULE_DESCRIPTION("Atmel AT91 / AT32 serial port driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:atmel_usart");
+device_initcall(atmel_serial_init);
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index a1c0a89..c28e5c24 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -653,7 +653,7 @@
#ifdef CONFIG_SERIAL_BCM63XX_CONSOLE
-static inline void wait_for_xmitr(struct uart_port *port)
+static void wait_for_xmitr(struct uart_port *port)
{
unsigned int tmout;
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index ae3cf94..293ecbb 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -213,7 +213,7 @@
static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
{
unsigned int status, ch, flg;
- static struct timeval anomaly_start = { .tv_sec = 0 };
+ static u64 anomaly_start;
status = UART_GET_LSR(uart);
UART_CLEAR_LSR(uart);
@@ -246,27 +246,24 @@
* character time +/- some percent. So 1.5 sounds good. All other
* Blackfin families operate properly. Woo.
*/
- if (anomaly_start.tv_sec) {
- struct timeval curr;
- suseconds_t usecs;
+ if (anomaly_start > 0) {
+ u64 curr, nsecs, threshold_ns;
if ((~ch & (~ch + 1)) & 0xff)
goto known_good_char;
- do_gettimeofday(&curr);
- if (curr.tv_sec - anomaly_start.tv_sec > 1)
+ curr = ktime_get_ns();
+ nsecs = curr - anomaly_start;
+ if (nsecs >> 32)
goto known_good_char;
- usecs = 0;
- if (curr.tv_sec != anomaly_start.tv_sec)
- usecs += USEC_PER_SEC;
- usecs += curr.tv_usec - anomaly_start.tv_usec;
-
- if (usecs > UART_GET_ANOMALY_THRESHOLD(uart))
+ threshold_ns = UART_GET_ANOMALY_THRESHOLD(uart)
+ * NSEC_PER_USEC;
+ if (nsecs > threshold_ns)
goto known_good_char;
if (ch)
- anomaly_start.tv_sec = 0;
+ anomaly_start = 0;
else
anomaly_start = curr;
@@ -274,14 +271,14 @@
known_good_char:
status &= ~BI;
- anomaly_start.tv_sec = 0;
+ anomaly_start = 0;
}
}
if (status & BI) {
if (ANOMALY_05000363)
if (bfin_revid() < 5)
- do_gettimeofday(&anomaly_start);
+ anomaly_start = ktime_get_ns();
uart->port.icount.brk++;
if (uart_handle_break(&uart->port))
goto ignore_char;
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index b5b2f2b..3f24236 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -71,10 +71,16 @@
return -EINVAL;
switch (port->iotype) {
+ case UPIO_MEM:
+ port->mapbase = addr;
+ break;
+ case UPIO_MEM16:
+ port->regshift = 1;
+ port->mapbase = addr;
+ break;
case UPIO_MEM32:
case UPIO_MEM32BE:
- port->regshift = 2; /* fall-through */
- case UPIO_MEM:
+ port->regshift = 2;
port->mapbase = addr;
break;
case UPIO_PORT:
@@ -91,10 +97,11 @@
strlcpy(device->options, options, length);
}
- if (port->iotype == UPIO_MEM || port->iotype == UPIO_MEM32 ||
- port->iotype == UPIO_MEM32BE)
+ if (port->iotype == UPIO_MEM || port->iotype == UPIO_MEM16 ||
+ port->iotype == UPIO_MEM32 || port->iotype == UPIO_MEM32BE)
pr_info("Early serial console at MMIO%s 0x%llx (options '%s')\n",
(port->iotype == UPIO_MEM) ? "" :
+ (port->iotype == UPIO_MEM16) ? "16" :
(port->iotype == UPIO_MEM32) ? "32" : "32be",
(unsigned long long)port->mapbase,
device->options);
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index ffc7cb2..c60a8d5e 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -22,7 +22,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
-#define SERIAL_DO_RESTART
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 016e4be..9362f54c 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -44,6 +44,8 @@
#include <linux/platform_data/serial-imx.h>
#include <linux/platform_data/dma-imx.h>
+#include "serial_mctrl_gpio.h"
+
/* Register definitions */
#define URXD0 0x0 /* Receiver Register */
#define URTX0 0x40 /* Transmitter Register */
@@ -148,8 +150,11 @@
#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */
#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */
#define USR2_IDLE (1<<12) /* Idle condition */
+#define USR2_RIDELT (1<<10) /* Ring Interrupt Delta */
+#define USR2_RIIN (1<<9) /* Ring Indicator Input */
#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */
#define USR2_WAKE (1<<7) /* Wake */
+#define USR2_DCDIN (1<<5) /* Data Carrier Detect Input */
#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */
#define USR2_TXDC (1<<3) /* Transmitter complete */
#define USR2_BRCD (1<<2) /* Break condition */
@@ -206,6 +211,8 @@
struct clk *clk_per;
const struct imx_uart_data *devdata;
+ struct mctrl_gpios *gpios;
+
/* DMA fields */
unsigned int dma_is_inited:1;
unsigned int dma_is_enabled:1;
@@ -308,49 +315,24 @@
}
#endif
-/*
- * Handle any change of modem status signal since we were last called.
- */
-static void imx_mctrl_check(struct imx_port *sport)
+static void imx_port_rts_active(struct imx_port *sport, unsigned long *ucr2)
{
- unsigned int status, changed;
+ *ucr2 &= ~UCR2_CTSC;
+ *ucr2 |= UCR2_CTS;
- status = sport->port.ops->get_mctrl(&sport->port);
- changed = status ^ sport->old_status;
-
- if (changed == 0)
- return;
-
- sport->old_status = status;
-
- if (changed & TIOCM_RI)
- sport->port.icount.rng++;
- if (changed & TIOCM_DSR)
- sport->port.icount.dsr++;
- if (changed & TIOCM_CAR)
- uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
- if (changed & TIOCM_CTS)
- uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
-
- wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
+ mctrl_gpio_set(sport->gpios, sport->port.mctrl | TIOCM_RTS);
}
-/*
- * This is our per-port timeout handler, for checking the
- * modem status signals.
- */
-static void imx_timeout(unsigned long data)
+static void imx_port_rts_inactive(struct imx_port *sport, unsigned long *ucr2)
{
- struct imx_port *sport = (struct imx_port *)data;
- unsigned long flags;
+ *ucr2 &= ~(UCR2_CTSC | UCR2_CTS);
- if (sport->port.state) {
- spin_lock_irqsave(&sport->port.lock, flags);
- imx_mctrl_check(sport);
- spin_unlock_irqrestore(&sport->port.lock, flags);
+ mctrl_gpio_set(sport->gpios, sport->port.mctrl & ~TIOCM_RTS);
+}
- mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);
- }
+static void imx_port_rts_auto(struct imx_port *sport, unsigned long *ucr2)
+{
+ *ucr2 |= UCR2_CTSC;
}
/*
@@ -376,9 +358,9 @@
readl(port->membase + USR2) & USR2_TXDC) {
temp = readl(port->membase + UCR2);
if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
- temp &= ~UCR2_CTS;
+ imx_port_rts_inactive(sport, &temp);
else
- temp |= UCR2_CTS;
+ imx_port_rts_active(sport, &temp);
writel(temp, port->membase + UCR2);
temp = readl(port->membase + UCR4);
@@ -420,6 +402,8 @@
struct imx_port *sport = (struct imx_port *)port;
mod_timer(&sport->timer, jiffies);
+
+ mctrl_gpio_enable_ms(sport->gpios);
}
static void imx_dma_tx(struct imx_port *sport);
@@ -579,14 +563,14 @@
unsigned long temp;
if (port->rs485.flags & SER_RS485_ENABLED) {
- /* enable transmitter and shifter empty irq */
temp = readl(port->membase + UCR2);
if (port->rs485.flags & SER_RS485_RTS_ON_SEND)
- temp &= ~UCR2_CTS;
+ imx_port_rts_inactive(sport, &temp);
else
- temp |= UCR2_CTS;
+ imx_port_rts_active(sport, &temp);
writel(temp, port->membase + UCR2);
+ /* enable transmitter and shifter empty irq */
temp = readl(port->membase + UCR4);
temp |= UCR4_TCEN;
writel(temp, port->membase + UCR4);
@@ -801,21 +785,33 @@
/*
* We have a modem side uart, so the meanings of RTS and CTS are inverted.
*/
+static unsigned int imx_get_hwmctrl(struct imx_port *sport)
+{
+ unsigned int tmp = TIOCM_DSR;
+ unsigned usr1 = readl(sport->port.membase + USR1);
+
+ if (usr1 & USR1_RTSS)
+ tmp |= TIOCM_CTS;
+
+ /* in DCE mode DCDIN is always 0 */
+ if (!(usr1 & USR2_DCDIN))
+ tmp |= TIOCM_CAR;
+
+ /* in DCE mode RIIN is always 0 */
+ if (readl(sport->port.membase + USR2) & USR2_RIIN)
+ tmp |= TIOCM_RI;
+
+ return tmp;
+}
+
static unsigned int imx_get_mctrl(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
- unsigned int tmp = TIOCM_DSR | TIOCM_CAR;
+ unsigned int ret = imx_get_hwmctrl(sport);
- if (readl(sport->port.membase + USR1) & USR1_RTSS)
- tmp |= TIOCM_CTS;
+ mctrl_gpio_get(sport->gpios, &ret);
- if (readl(sport->port.membase + UCR2) & UCR2_CTS)
- tmp |= TIOCM_RTS;
-
- if (readl(sport->port.membase + uts_reg(sport)) & UTS_LOOP)
- tmp |= TIOCM_LOOP;
-
- return tmp;
+ return ret;
}
static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
@@ -831,10 +827,17 @@
writel(temp, sport->port.membase + UCR2);
}
+ temp = readl(sport->port.membase + UCR3) & ~UCR3_DSR;
+ if (!(mctrl & TIOCM_DTR))
+ temp |= UCR3_DSR;
+ writel(temp, sport->port.membase + UCR3);
+
temp = readl(sport->port.membase + uts_reg(sport)) & ~UTS_LOOP;
if (mctrl & TIOCM_LOOP)
temp |= UTS_LOOP;
writel(temp, sport->port.membase + uts_reg(sport));
+
+ mctrl_gpio_set(sport->gpios, mctrl);
}
/*
@@ -857,6 +860,51 @@
spin_unlock_irqrestore(&sport->port.lock, flags);
}
+/*
+ * Handle any change of modem status signal since we were last called.
+ */
+static void imx_mctrl_check(struct imx_port *sport)
+{
+ unsigned int status, changed;
+
+ status = imx_get_hwmctrl(sport);
+ changed = status ^ sport->old_status;
+
+ if (changed == 0)
+ return;
+
+ sport->old_status = status;
+
+ if (changed & TIOCM_RI)
+ sport->port.icount.rng++;
+ if (changed & TIOCM_DSR)
+ sport->port.icount.dsr++;
+ if (changed & TIOCM_CAR)
+ uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
+ if (changed & TIOCM_CTS)
+ uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
+
+ wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
+}
+
+/*
+ * This is our per-port timeout handler, for checking the
+ * modem status signals.
+ */
+static void imx_timeout(unsigned long data)
+{
+ struct imx_port *sport = (struct imx_port *)data;
+ unsigned long flags;
+
+ if (sport->port.state) {
+ spin_lock_irqsave(&sport->port.lock, flags);
+ imx_mctrl_check(sport);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+
+ mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);
+ }
+}
+
#define RX_BUF_SIZE (PAGE_SIZE)
static void imx_rx_dma_done(struct imx_port *sport)
{
@@ -1207,6 +1255,8 @@
imx_uart_dma_exit(sport);
}
+ mctrl_gpio_disable_ms(sport->gpios);
+
spin_lock_irqsave(&sport->port.lock, flags);
temp = readl(sport->port.membase + UCR2);
temp &= ~(UCR2_TXEN);
@@ -1284,9 +1334,10 @@
{
struct imx_port *sport = (struct imx_port *)port;
unsigned long flags;
- unsigned int ucr2, old_ucr1, old_ucr2, baud, quot;
+ unsigned long ucr2, old_ucr1, old_ucr2;
+ unsigned int baud, quot;
unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8;
- unsigned int div, ufcr;
+ unsigned long div, ufcr;
unsigned long num, denom;
uint64_t tdiv64;
@@ -1315,19 +1366,25 @@
* it under manual control and keep transmitter
* disabled.
*/
- if (!(port->rs485.flags &
- SER_RS485_RTS_AFTER_SEND))
- ucr2 |= UCR2_CTS;
+ if (port->rs485.flags &
+ SER_RS485_RTS_AFTER_SEND)
+ imx_port_rts_inactive(sport, &ucr2);
+ else
+ imx_port_rts_active(sport, &ucr2);
} else {
- ucr2 |= UCR2_CTSC;
+ imx_port_rts_auto(sport, &ucr2);
}
} else {
termios->c_cflag &= ~CRTSCTS;
}
- } else if (port->rs485.flags & SER_RS485_ENABLED)
+ } else if (port->rs485.flags & SER_RS485_ENABLED) {
/* disable transmitter */
- if (!(port->rs485.flags & SER_RS485_RTS_AFTER_SEND))
- ucr2 |= UCR2_CTS;
+ if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
+ imx_port_rts_inactive(sport, &ucr2);
+ else
+ imx_port_rts_active(sport, &ucr2);
+ }
+
if (termios->c_cflag & CSTOPB)
ucr2 |= UCR2_STPB;
@@ -1568,11 +1625,10 @@
/* disable transmitter */
temp = readl(sport->port.membase + UCR2);
- temp &= ~UCR2_CTSC;
if (rs485conf->flags & SER_RS485_RTS_AFTER_SEND)
- temp &= ~UCR2_CTS;
+ imx_port_rts_inactive(sport, &temp);
else
- temp |= UCR2_CTS;
+ imx_port_rts_active(sport, &temp);
writel(temp, sport->port.membase + UCR2);
}
@@ -1857,11 +1913,10 @@
struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
- const struct of_device_id *of_id =
- of_match_device(imx_uart_dt_ids, &pdev->dev);
int ret;
- if (!np)
+ sport->devdata = of_device_get_match_data(&pdev->dev);
+ if (!sport->devdata)
/* no device tree device */
return 1;
@@ -1878,8 +1933,6 @@
if (of_get_property(np, "fsl,dte-mode", NULL))
sport->dte_mode = 1;
- sport->devdata = of_id->data;
-
return 0;
}
#else
@@ -1948,6 +2001,10 @@
sport->timer.function = imx_timeout;
sport->timer.data = (unsigned long)sport;
+ sport->gpios = mctrl_gpio_init(&sport->port, 0);
+ if (IS_ERR(sport->gpios))
+ return PTR_ERR(sport->gpios);
+
sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(sport->clk_ipg)) {
ret = PTR_ERR(sport->clk_ipg);
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index efbd87a..a119f11 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -70,7 +70,7 @@
goto out;
}
- rc = pci_request_regions(pdev, "jsm");
+ rc = pci_request_regions(pdev, JSM_DRIVER_NAME);
if (rc) {
dev_err(&pdev->dev, "pci_request_region FAILED\n");
goto out_disable_device;
@@ -328,7 +328,7 @@
MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
static struct pci_driver jsm_driver = {
- .name = "jsm",
+ .name = JSM_DRIVER_NAME,
.id_table = jsm_pci_tbl,
.probe = jsm_probe_one,
.remove = jsm_remove_one,
diff --git a/drivers/tty/serial/jsm/jsm_neo.c b/drivers/tty/serial/jsm/jsm_neo.c
index 932b2ac..c6fdd63 100644
--- a/drivers/tty/serial/jsm/jsm_neo.c
+++ b/drivers/tty/serial/jsm/jsm_neo.c
@@ -714,7 +714,7 @@
/*
* Parse the ISR register.
*/
-static inline void neo_parse_isr(struct jsm_board *brd, u32 port)
+static void neo_parse_isr(struct jsm_board *brd, u32 port)
{
struct jsm_channel *ch;
u8 isr;
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 8f7f83a..0eeb64f 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -990,7 +990,7 @@
/*
* Wait for transmitter & holding register to empty
*/
-static inline void wait_for_xmitr(struct uart_sio_port *up)
+static void wait_for_xmitr(struct uart_sio_port *up)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c
index 3141aa2..a44290e 100644
--- a/drivers/tty/serial/men_z135_uart.c
+++ b/drivers/tty/serial/men_z135_uart.c
@@ -158,7 +158,7 @@
* @addr: Register address
* @val: value to clear
*/
-static inline void men_z135_reg_clr(struct men_z135_port *uart,
+static void men_z135_reg_clr(struct men_z135_port *uart,
u32 addr, u32 val)
{
struct uart_port *port = &uart->port;
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 0fc83c9..b12a37bd 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -57,6 +57,7 @@
#define AML_UART_RX_EMPTY BIT(20)
#define AML_UART_TX_FULL BIT(21)
#define AML_UART_TX_EMPTY BIT(22)
+#define AML_UART_XMIT_BUSY BIT(25)
#define AML_UART_ERR (AML_UART_PARITY_ERR | \
AML_UART_FRAME_ERR | \
AML_UART_TX_FIFO_WERR)
@@ -100,7 +101,8 @@
u32 val;
val = readl(port->membase + AML_UART_STATUS);
- return (val & AML_UART_TX_EMPTY) ? TIOCSER_TEMT : 0;
+ val &= (AML_UART_TX_EMPTY | AML_UART_XMIT_BUSY);
+ return (val == AML_UART_TX_EMPTY) ? TIOCSER_TEMT : 0;
}
static void meson_uart_stop_tx(struct uart_port *port)
@@ -108,7 +110,7 @@
u32 val;
val = readl(port->membase + AML_UART_CONTROL);
- val &= ~AML_UART_TX_EN;
+ val &= ~AML_UART_TX_INT_EN;
writel(val, port->membase + AML_UART_CONTROL);
}
@@ -131,7 +133,7 @@
spin_lock_irqsave(&port->lock, flags);
val = readl(port->membase + AML_UART_CONTROL);
- val &= ~(AML_UART_RX_EN | AML_UART_TX_EN);
+ val &= ~AML_UART_RX_EN;
val &= ~(AML_UART_RX_INT_EN | AML_UART_TX_INT_EN);
writel(val, port->membase + AML_UART_CONTROL);
@@ -142,6 +144,7 @@
{
struct circ_buf *xmit = &port->state->xmit;
unsigned int ch;
+ u32 val;
if (uart_tx_stopped(port)) {
meson_uart_stop_tx(port);
@@ -165,6 +168,12 @@
port->icount.tx++;
}
+ if (!uart_circ_empty(xmit)) {
+ val = readl(port->membase + AML_UART_CONTROL);
+ val |= AML_UART_TX_INT_EN;
+ writel(val, port->membase + AML_UART_CONTROL);
+ }
+
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
}
@@ -228,8 +237,10 @@
if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_RX_EMPTY))
meson_receive_chars(port);
- if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL))
- meson_uart_start_tx(port);
+ if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL)) {
+ if (readl(port->membase + AML_UART_CONTROL) & AML_UART_TX_INT_EN)
+ meson_uart_start_tx(port);
+ }
spin_unlock(&port->lock);
@@ -241,10 +252,9 @@
return (port->type == PORT_MESON) ? "meson_uart" : NULL;
}
-static int meson_uart_startup(struct uart_port *port)
+static void meson_uart_reset(struct uart_port *port)
{
u32 val;
- int ret = 0;
val = readl(port->membase + AML_UART_CONTROL);
val |= (AML_UART_RX_RST | AML_UART_TX_RST | AML_UART_CLR_ERR);
@@ -252,6 +262,18 @@
val &= ~(AML_UART_RX_RST | AML_UART_TX_RST | AML_UART_CLR_ERR);
writel(val, port->membase + AML_UART_CONTROL);
+}
+
+static int meson_uart_startup(struct uart_port *port)
+{
+ u32 val;
+ int ret = 0;
+
+ val = readl(port->membase + AML_UART_CONTROL);
+ val |= AML_UART_CLR_ERR;
+ writel(val, port->membase + AML_UART_CONTROL);
+ val &= ~AML_UART_CLR_ERR;
+ writel(val, port->membase + AML_UART_CONTROL);
val |= (AML_UART_RX_EN | AML_UART_TX_EN);
writel(val, port->membase + AML_UART_CONTROL);
@@ -272,7 +294,7 @@
{
u32 val;
- while (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_EMPTY))
+ while (!meson_uart_tx_empty(port))
cpu_relax();
val = readl(port->membase + AML_UART_REG5);
@@ -367,9 +389,26 @@
return ret;
}
+static int meson_uart_res_size(struct uart_port *port)
+{
+ struct platform_device *pdev = to_platform_device(port->dev);
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(port->dev, "cannot obtain I/O memory region");
+ return -ENODEV;
+ }
+
+ return resource_size(res);
+}
+
static void meson_uart_release_port(struct uart_port *port)
{
+ int size = meson_uart_res_size(port);
+
if (port->flags & UPF_IOREMAP) {
+ devm_release_mem_region(port->dev, port->mapbase, size);
devm_iounmap(port->dev, port->membase);
port->membase = NULL;
}
@@ -377,16 +416,10 @@
static int meson_uart_request_port(struct uart_port *port)
{
- struct platform_device *pdev = to_platform_device(port->dev);
- struct resource *res;
- int size;
+ int size = meson_uart_res_size(port);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "cannot obtain I/O memory region");
- return -ENODEV;
- }
- size = resource_size(res);
+ if (size < 0)
+ return size;
if (!devm_request_mem_region(port->dev, port->mapbase, size,
dev_name(port->dev))) {
@@ -448,6 +481,7 @@
struct uart_port *port;
unsigned long flags;
int locked;
+ u32 val, tmp;
port = meson_ports[co->index];
if (!port)
@@ -463,7 +497,13 @@
locked = 1;
}
+ val = readl(port->membase + AML_UART_CONTROL);
+ val |= AML_UART_TX_EN;
+ tmp = val & ~(AML_UART_TX_INT_EN | AML_UART_RX_INT_EN);
+ writel(tmp, port->membase + AML_UART_CONTROL);
+
uart_console_write(port, s, count, meson_console_putchar);
+ writel(val, port->membase + AML_UART_CONTROL);
if (locked)
spin_unlock(&port->lock);
@@ -570,6 +610,12 @@
meson_ports[pdev->id] = port;
platform_set_drvdata(pdev, port);
+ /* reset port before registering (and possibly registering console) */
+ if (meson_uart_request_port(port) >= 0) {
+ meson_uart_reset(port);
+ meson_uart_release_port(port);
+ }
+
ret = uart_add_one_port(&meson_uart_driver, port);
if (ret)
meson_ports[pdev->id] = NULL;
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
deleted file mode 100644
index 5da7622..0000000
--- a/drivers/tty/serial/nwpserial.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/*
- * Serial Port driver for a NWP uart device
- *
- * Copyright (C) 2008 IBM Corp., Benjamin Krill <ben@codiert.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/console.h>
-#include <linux/serial.h>
-#include <linux/serial_reg.h>
-#include <linux/serial_core.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/irqreturn.h>
-#include <linux/mutex.h>
-#include <linux/of_platform.h>
-#include <linux/of_device.h>
-#include <linux/nwpserial.h>
-#include <linux/delay.h>
-#include <asm/prom.h>
-#include <asm/dcr.h>
-
-#define NWPSERIAL_NR 2
-
-#define NWPSERIAL_STATUS_RXVALID 0x1
-#define NWPSERIAL_STATUS_TXFULL 0x2
-
-struct nwpserial_port {
- struct uart_port port;
- dcr_host_t dcr_host;
- unsigned int ier;
- unsigned int mcr;
-};
-
-static DEFINE_MUTEX(nwpserial_mutex);
-static struct nwpserial_port nwpserial_ports[NWPSERIAL_NR];
-
-static void wait_for_bits(struct nwpserial_port *up, int bits)
-{
- unsigned int status, tmout = 10000;
-
- /* Wait up to 10ms for the character(s) to be sent. */
- do {
- status = dcr_read(up->dcr_host, UART_LSR);
-
- if (--tmout == 0)
- break;
- udelay(1);
- } while ((status & bits) != bits);
-}
-
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE
-static void nwpserial_console_putchar(struct uart_port *port, int c)
-{
- struct nwpserial_port *up;
- up = container_of(port, struct nwpserial_port, port);
- /* check if tx buffer is full */
- wait_for_bits(up, UART_LSR_THRE);
- dcr_write(up->dcr_host, UART_TX, c);
- up->port.icount.tx++;
-}
-
-static void
-nwpserial_console_write(struct console *co, const char *s, unsigned int count)
-{
- struct nwpserial_port *up = &nwpserial_ports[co->index];
- unsigned long flags;
- int locked = 1;
-
- if (oops_in_progress)
- locked = spin_trylock_irqsave(&up->port.lock, flags);
- else
- spin_lock_irqsave(&up->port.lock, flags);
-
- /* save and disable interrupt */
- up->ier = dcr_read(up->dcr_host, UART_IER);
- dcr_write(up->dcr_host, UART_IER, up->ier & ~UART_IER_RDI);
-
- uart_console_write(&up->port, s, count, nwpserial_console_putchar);
-
- /* wait for transmitter to become empty */
- while ((dcr_read(up->dcr_host, UART_LSR) & UART_LSR_THRE) == 0)
- cpu_relax();
-
- /* restore interrupt state */
- dcr_write(up->dcr_host, UART_IER, up->ier);
-
- if (locked)
- spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static struct uart_driver nwpserial_reg;
-static struct console nwpserial_console = {
- .name = "ttySQ",
- .write = nwpserial_console_write,
- .device = uart_console_device,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &nwpserial_reg,
-};
-#define NWPSERIAL_CONSOLE (&nwpserial_console)
-#else
-#define NWPSERIAL_CONSOLE NULL
-#endif /* CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE */
-
-/**************************************************************************/
-
-static int nwpserial_request_port(struct uart_port *port)
-{
- return 0;
-}
-
-static void nwpserial_release_port(struct uart_port *port)
-{
- /* N/A */
-}
-
-static void nwpserial_config_port(struct uart_port *port, int flags)
-{
- port->type = PORT_NWPSERIAL;
-}
-
-static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
-{
- struct nwpserial_port *up = dev_id;
- struct tty_port *port = &up->port.state->port;
- irqreturn_t ret;
- unsigned int iir;
- unsigned char ch;
-
- spin_lock(&up->port.lock);
-
- /* check if the uart was the interrupt source. */
- iir = dcr_read(up->dcr_host, UART_IIR);
- if (!iir) {
- ret = IRQ_NONE;
- goto out;
- }
-
- do {
- up->port.icount.rx++;
- ch = dcr_read(up->dcr_host, UART_RX);
- if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID)
- tty_insert_flip_char(port, ch, TTY_NORMAL);
- } while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
-
- spin_unlock(&up->port.lock);
- tty_flip_buffer_push(port);
- spin_lock(&up->port.lock);
-
- ret = IRQ_HANDLED;
-
- /* clear interrupt */
- dcr_write(up->dcr_host, UART_IIR, 1);
-out:
- spin_unlock(&up->port.lock);
- return ret;
-}
-
-static int nwpserial_startup(struct uart_port *port)
-{
- struct nwpserial_port *up;
- int err;
-
- up = container_of(port, struct nwpserial_port, port);
-
- /* disable flow control by default */
- up->mcr = dcr_read(up->dcr_host, UART_MCR) & ~UART_MCR_AFE;
- dcr_write(up->dcr_host, UART_MCR, up->mcr);
-
- /* register interrupt handler */
- err = request_irq(up->port.irq, nwpserial_interrupt,
- IRQF_SHARED, "nwpserial", up);
- if (err)
- return err;
-
- /* enable interrupts */
- up->ier = UART_IER_RDI;
- dcr_write(up->dcr_host, UART_IER, up->ier);
-
- /* enable receiving */
- up->port.ignore_status_mask &= ~NWPSERIAL_STATUS_RXVALID;
-
- return 0;
-}
-
-static void nwpserial_shutdown(struct uart_port *port)
-{
- struct nwpserial_port *up;
- up = container_of(port, struct nwpserial_port, port);
-
- /* disable receiving */
- up->port.ignore_status_mask |= NWPSERIAL_STATUS_RXVALID;
-
- /* disable interrupts from this port */
- up->ier = 0;
- dcr_write(up->dcr_host, UART_IER, up->ier);
-
- /* free irq */
- free_irq(up->port.irq, up);
-}
-
-static int nwpserial_verify_port(struct uart_port *port,
- struct serial_struct *ser)
-{
- return -EINVAL;
-}
-
-static const char *nwpserial_type(struct uart_port *port)
-{
- return port->type == PORT_NWPSERIAL ? "nwpserial" : NULL;
-}
-
-static void nwpserial_set_termios(struct uart_port *port,
- struct ktermios *termios, struct ktermios *old)
-{
- struct nwpserial_port *up;
- up = container_of(port, struct nwpserial_port, port);
-
- up->port.read_status_mask = NWPSERIAL_STATUS_RXVALID
- | NWPSERIAL_STATUS_TXFULL;
-
- up->port.ignore_status_mask = 0;
- /* ignore all characters if CREAD is not set */
- if ((termios->c_cflag & CREAD) == 0)
- up->port.ignore_status_mask |= NWPSERIAL_STATUS_RXVALID;
-
- /* Copy back the old hardware settings */
- if (old)
- tty_termios_copy_hw(termios, old);
-}
-
-static void nwpserial_break_ctl(struct uart_port *port, int ctl)
-{
- /* N/A */
-}
-
-static void nwpserial_stop_rx(struct uart_port *port)
-{
- struct nwpserial_port *up;
- up = container_of(port, struct nwpserial_port, port);
- /* don't forward any more data (like !CREAD) */
- up->port.ignore_status_mask = NWPSERIAL_STATUS_RXVALID;
-}
-
-static void nwpserial_putchar(struct nwpserial_port *up, unsigned char c)
-{
- /* check if tx buffer is full */
- wait_for_bits(up, UART_LSR_THRE);
- dcr_write(up->dcr_host, UART_TX, c);
- up->port.icount.tx++;
-}
-
-static void nwpserial_start_tx(struct uart_port *port)
-{
- struct nwpserial_port *up;
- struct circ_buf *xmit;
- up = container_of(port, struct nwpserial_port, port);
- xmit = &up->port.state->xmit;
-
- if (port->x_char) {
- nwpserial_putchar(up, up->port.x_char);
- port->x_char = 0;
- }
-
- while (!(uart_circ_empty(xmit) || uart_tx_stopped(&up->port))) {
- nwpserial_putchar(up, xmit->buf[xmit->tail]);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
- }
-}
-
-static unsigned int nwpserial_get_mctrl(struct uart_port *port)
-{
- return 0;
-}
-
-static void nwpserial_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- /* N/A */
-}
-
-static void nwpserial_stop_tx(struct uart_port *port)
-{
- /* N/A */
-}
-
-static unsigned int nwpserial_tx_empty(struct uart_port *port)
-{
- struct nwpserial_port *up;
- unsigned long flags;
- int ret;
- up = container_of(port, struct nwpserial_port, port);
-
- spin_lock_irqsave(&up->port.lock, flags);
- ret = dcr_read(up->dcr_host, UART_LSR);
- spin_unlock_irqrestore(&up->port.lock, flags);
-
- return ret & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
-}
-
-static struct uart_ops nwpserial_pops = {
- .tx_empty = nwpserial_tx_empty,
- .set_mctrl = nwpserial_set_mctrl,
- .get_mctrl = nwpserial_get_mctrl,
- .stop_tx = nwpserial_stop_tx,
- .start_tx = nwpserial_start_tx,
- .stop_rx = nwpserial_stop_rx,
- .break_ctl = nwpserial_break_ctl,
- .startup = nwpserial_startup,
- .shutdown = nwpserial_shutdown,
- .set_termios = nwpserial_set_termios,
- .type = nwpserial_type,
- .release_port = nwpserial_release_port,
- .request_port = nwpserial_request_port,
- .config_port = nwpserial_config_port,
- .verify_port = nwpserial_verify_port,
-};
-
-static struct uart_driver nwpserial_reg = {
- .owner = THIS_MODULE,
- .driver_name = "nwpserial",
- .dev_name = "ttySQ",
- .major = TTY_MAJOR,
- .minor = 68,
- .nr = NWPSERIAL_NR,
- .cons = NWPSERIAL_CONSOLE,
-};
-
-int nwpserial_register_port(struct uart_port *port)
-{
- struct nwpserial_port *up = NULL;
- int ret = -1;
- int i;
- static int first = 1;
- int dcr_len;
- int dcr_base;
- struct device_node *dn;
-
- mutex_lock(&nwpserial_mutex);
-
- dn = port->dev->of_node;
- if (dn == NULL)
- goto out;
-
- /* get dcr base. */
- dcr_base = dcr_resource_start(dn, 0);
-
- /* find matching entry */
- for (i = 0; i < NWPSERIAL_NR; i++)
- if (nwpserial_ports[i].port.iobase == dcr_base) {
- up = &nwpserial_ports[i];
- break;
- }
-
- /* we didn't find a mtching entry, search for a free port */
- if (up == NULL)
- for (i = 0; i < NWPSERIAL_NR; i++)
- if (nwpserial_ports[i].port.type == PORT_UNKNOWN &&
- nwpserial_ports[i].port.iobase == 0) {
- up = &nwpserial_ports[i];
- break;
- }
-
- if (up == NULL) {
- ret = -EBUSY;
- goto out;
- }
-
- if (first)
- uart_register_driver(&nwpserial_reg);
- first = 0;
-
- up->port.membase = port->membase;
- up->port.irq = port->irq;
- up->port.uartclk = port->uartclk;
- up->port.fifosize = port->fifosize;
- up->port.regshift = port->regshift;
- up->port.iotype = port->iotype;
- up->port.flags = port->flags;
- up->port.mapbase = port->mapbase;
- up->port.private_data = port->private_data;
-
- if (port->dev)
- up->port.dev = port->dev;
-
- if (up->port.iobase != dcr_base) {
- up->port.ops = &nwpserial_pops;
- up->port.fifosize = 16;
-
- spin_lock_init(&up->port.lock);
-
- up->port.iobase = dcr_base;
- dcr_len = dcr_resource_len(dn, 0);
-
- up->dcr_host = dcr_map(dn, dcr_base, dcr_len);
- if (!DCR_MAP_OK(up->dcr_host)) {
- printk(KERN_ERR "Cannot map DCR resources for NWPSERIAL");
- goto out;
- }
- }
-
- ret = uart_add_one_port(&nwpserial_reg, &up->port);
- if (ret == 0)
- ret = up->port.line;
-
-out:
- mutex_unlock(&nwpserial_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL(nwpserial_register_port);
-
-void nwpserial_unregister_port(int line)
-{
- struct nwpserial_port *up = &nwpserial_ports[line];
- mutex_lock(&nwpserial_mutex);
- uart_remove_one_port(&nwpserial_reg, &up->port);
-
- up->port.type = PORT_UNKNOWN;
-
- mutex_unlock(&nwpserial_mutex);
-}
-EXPORT_SYMBOL(nwpserial_unregister_port);
-
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE
-static int __init nwpserial_console_init(void)
-{
- struct nwpserial_port *up = NULL;
- struct device_node *dn;
- const char *name;
- int dcr_base;
- int dcr_len;
- int i;
-
- /* search for a free port */
- for (i = 0; i < NWPSERIAL_NR; i++)
- if (nwpserial_ports[i].port.type == PORT_UNKNOWN) {
- up = &nwpserial_ports[i];
- break;
- }
-
- if (up == NULL)
- return -1;
-
- name = of_get_property(of_chosen, "linux,stdout-path", NULL);
- if (name == NULL)
- return -1;
-
- dn = of_find_node_by_path(name);
- if (!dn)
- return -1;
-
- spin_lock_init(&up->port.lock);
- up->port.ops = &nwpserial_pops;
- up->port.type = PORT_NWPSERIAL;
- up->port.fifosize = 16;
-
- dcr_base = dcr_resource_start(dn, 0);
- dcr_len = dcr_resource_len(dn, 0);
- up->port.iobase = dcr_base;
-
- up->dcr_host = dcr_map(dn, dcr_base, dcr_len);
- if (!DCR_MAP_OK(up->dcr_host)) {
- printk("Cannot map DCR resources for SERIAL");
- return -1;
- }
- register_console(&nwpserial_console);
- return 0;
-}
-console_initcall(nwpserial_console_init);
-#endif /* CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE */
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 9d4c84f..b645f92 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1165,7 +1165,7 @@
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-static inline void wait_for_xmitr(struct uart_omap_port *up)
+static void wait_for_xmitr(struct uart_omap_port *up)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 9becba6..41eab75 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -603,7 +603,7 @@
/*
* Wait for transmitter & holding register to empty
*/
-static inline void wait_for_xmitr(struct uart_pxa_port *up)
+static void wait_for_xmitr(struct uart_pxa_port *up)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index edb5305..5815bcb 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -389,6 +389,13 @@
const u8 line = sc16is7xx_line(port);
u8 addr = (SC16IS7XX_THR_REG << SC16IS7XX_REG_SHIFT) | line;
+ /*
+ * Don't send zero-length data, at least on SPI it confuses the chip
+ * delivering wrong TXLVL data.
+ */
+ if (unlikely(!to_send))
+ return;
+
regcache_cache_bypass(s->regmap, true);
regmap_raw_write(s->regmap, addr, s->buf, to_send);
regcache_cache_bypass(s->regmap, false);
@@ -630,6 +637,12 @@
if (likely(to_send)) {
/* Limit to size of TX FIFO */
txlen = sc16is7xx_port_read(port, SC16IS7XX_TXLVL_REG);
+ if (txlen > SC16IS7XX_FIFO_SIZE) {
+ dev_err_ratelimited(port->dev,
+ "chip reports %d free bytes in TX fifo, but it only has %d",
+ txlen, SC16IS7XX_FIFO_SIZE);
+ txlen = 0;
+ }
to_send = (to_send > txlen) ? txlen : to_send;
/* Add data to send */
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index def5199..b1f54ab 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -110,7 +110,7 @@
spin_unlock_irqrestore(&port->lock, flags);
}
-static inline void
+static void
uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
{
unsigned long flags;
@@ -1818,8 +1818,8 @@
* @options: ptr for <options> field; NULL if not present (out)
*
* Decodes earlycon kernel command line parameters of the form
- * earlycon=<name>,io|mmio|mmio32|mmio32be|mmio32native,<addr>,<options>
- * console=<name>,io|mmio|mmio32|mmio32be|mmio32native,<addr>,<options>
+ * earlycon=<name>,io|mmio|mmio16|mmio32|mmio32be|mmio32native,<addr>,<options>
+ * console=<name>,io|mmio|mmio16|mmio32|mmio32be|mmio32native,<addr>,<options>
*
* The optional form
* earlycon=<name>,0x<addr>,<options>
@@ -1834,6 +1834,9 @@
if (strncmp(p, "mmio,", 5) == 0) {
*iotype = UPIO_MEM;
p += 5;
+ } else if (strncmp(p, "mmio16,", 7) == 0) {
+ *iotype = UPIO_MEM16;
+ p += 7;
} else if (strncmp(p, "mmio32,", 7) == 0) {
*iotype = UPIO_MEM32;
p += 7;
@@ -2186,6 +2189,7 @@
"I/O 0x%lx offset 0x%x", port->iobase, port->hub6);
break;
case UPIO_MEM:
+ case UPIO_MEM16:
case UPIO_MEM32:
case UPIO_MEM32BE:
case UPIO_AU:
@@ -2831,6 +2835,7 @@
return (port1->iobase == port2->iobase) &&
(port1->hub6 == port2->hub6);
case UPIO_MEM:
+ case UPIO_MEM16:
case UPIO_MEM32:
case UPIO_MEM32BE:
case UPIO_AU:
diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index 3eb57eb..226ad23 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -193,6 +193,7 @@
return gpios;
}
+EXPORT_SYMBOL_GPL(mctrl_gpio_init);
void mctrl_gpio_free(struct device *dev, struct mctrl_gpios *gpios)
{
@@ -247,3 +248,4 @@
disable_irq(gpios->irq[i]);
}
}
+EXPORT_SYMBOL_GPL(mctrl_gpio_disable_ms);
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 51c7507..4646a9f 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2,6 +2,7 @@
* SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
*
* Copyright (C) 2002 - 2011 Paul Mundt
+ * Copyright (C) 2015 Glider bvba
* Modified to support SH7720 SCIF. Markus Brunner, Mark Jonas (Jul 2007).
*
* based off of the old drivers/char/sh-sci.c by:
@@ -38,7 +39,6 @@
#include <linux/major.h>
#include <linux/module.h>
#include <linux/mm.h>
-#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@@ -76,6 +76,14 @@
((port)->irqs[SCIx_ERI_IRQ] && \
((port)->irqs[SCIx_RXI_IRQ] < 0))
+enum SCI_CLKS {
+ SCI_FCK, /* Functional Clock */
+ SCI_SCK, /* Optional External Clock */
+ SCI_BRG_INT, /* Optional BRG Internal Clock Source */
+ SCI_SCIF_CLK, /* Optional BRG External Clock Source */
+ SCI_NUM_CLKS
+};
+
struct sci_port {
struct uart_port port;
@@ -92,10 +100,9 @@
struct timer_list break_timer;
int break_flag;
- /* Interface clock */
- struct clk *iclk;
- /* Function clock */
- struct clk *fclk;
+ /* Clocks */
+ struct clk *clks[SCI_NUM_CLKS];
+ unsigned long clk_rates[SCI_NUM_CLKS];
int irqs[SCIx_NR_IRQS];
char *irqstr[SCIx_NR_IRQS];
@@ -116,8 +123,6 @@
struct timer_list rx_timer;
unsigned int rx_timeout;
#endif
-
- struct notifier_block freq_transition;
};
#define SCI_NPORTS CONFIG_SERIAL_SH_SCI_NR_UARTS
@@ -163,6 +168,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -185,6 +192,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -206,6 +215,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = { 0x30, 16 },
[SCPDR] = { 0x34, 16 },
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -227,6 +238,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = { 0x30, 16 },
[SCPDR] = { 0x34, 16 },
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -249,6 +262,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -270,6 +285,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -291,6 +308,32 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
+ },
+
+ /*
+ * Common SCIF definitions for ports with a Baud Rate Generator for
+ * External Clock (BRG).
+ */
+ [SCIx_SH4_SCIF_BRG_REGTYPE] = {
+ [SCSMR] = { 0x00, 16 },
+ [SCBRR] = { 0x04, 8 },
+ [SCSCR] = { 0x08, 16 },
+ [SCxTDR] = { 0x0c, 8 },
+ [SCxSR] = { 0x10, 16 },
+ [SCxRDR] = { 0x14, 8 },
+ [SCFCR] = { 0x18, 16 },
+ [SCFDR] = { 0x1c, 16 },
+ [SCTFDR] = sci_reg_invalid,
+ [SCRFDR] = sci_reg_invalid,
+ [SCSPTR] = { 0x20, 16 },
+ [SCLSR] = { 0x24, 16 },
+ [HSSRR] = sci_reg_invalid,
+ [SCPCR] = sci_reg_invalid,
+ [SCPDR] = sci_reg_invalid,
+ [SCDL] = { 0x30, 16 },
+ [SCCKS] = { 0x34, 16 },
},
/*
@@ -312,6 +355,8 @@
[HSSRR] = { 0x40, 16 },
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = { 0x30, 16 },
+ [SCCKS] = { 0x34, 16 },
},
/*
@@ -334,6 +379,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -356,6 +403,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
/*
@@ -378,6 +427,8 @@
[HSSRR] = sci_reg_invalid,
[SCPCR] = sci_reg_invalid,
[SCPDR] = sci_reg_invalid,
+ [SCDL] = sci_reg_invalid,
+ [SCCKS] = sci_reg_invalid,
},
};
@@ -452,18 +503,24 @@
static void sci_port_enable(struct sci_port *sci_port)
{
+ unsigned int i;
+
if (!sci_port->port.dev)
return;
pm_runtime_get_sync(sci_port->port.dev);
- clk_prepare_enable(sci_port->iclk);
- sci_port->port.uartclk = clk_get_rate(sci_port->iclk);
- clk_prepare_enable(sci_port->fclk);
+ for (i = 0; i < SCI_NUM_CLKS; i++) {
+ clk_prepare_enable(sci_port->clks[i]);
+ sci_port->clk_rates[i] = clk_get_rate(sci_port->clks[i]);
+ }
+ sci_port->port.uartclk = sci_port->clk_rates[SCI_FCK];
}
static void sci_port_disable(struct sci_port *sci_port)
{
+ unsigned int i;
+
if (!sci_port->port.dev)
return;
@@ -475,8 +532,8 @@
del_timer_sync(&sci_port->break_timer);
sci_port->break_flag = 0;
- clk_disable_unprepare(sci_port->fclk);
- clk_disable_unprepare(sci_port->iclk);
+ for (i = SCI_NUM_CLKS; i-- > 0; )
+ clk_disable_unprepare(sci_port->clks[i]);
pm_runtime_put_sync(sci_port->port.dev);
}
@@ -1606,29 +1663,6 @@
return ret;
}
-/*
- * Here we define a transition notifier so that we can update all of our
- * ports' baud rate when the peripheral clock changes.
- */
-static int sci_notifier(struct notifier_block *self,
- unsigned long phase, void *p)
-{
- struct sci_port *sci_port;
- unsigned long flags;
-
- sci_port = container_of(self, struct sci_port, freq_transition);
-
- if (phase == CPUFREQ_POSTCHANGE) {
- struct uart_port *port = &sci_port->port;
-
- spin_lock_irqsave(&port->lock, flags);
- port->uartclk = clk_get_rate(sci_port->iclk);
- spin_unlock_irqrestore(&port->lock, flags);
- }
-
- return NOTIFY_OK;
-}
-
static const struct sci_irq_desc {
const char *desc;
irq_handler_t handler;
@@ -1864,90 +1898,149 @@
sci_free_irq(s);
}
-static unsigned int sci_scbrr_calc(struct sci_port *s, unsigned int bps,
- unsigned long freq)
+static int sci_sck_calc(struct sci_port *s, unsigned int bps,
+ unsigned int *srr)
{
- if (s->sampling_rate)
- return DIV_ROUND_CLOSEST(freq, s->sampling_rate * bps) - 1;
+ unsigned long freq = s->clk_rates[SCI_SCK];
+ unsigned int min_sr, max_sr, sr;
+ int err, min_err = INT_MAX;
- /* Warn, but use a safe default */
- WARN_ON(1);
+ if (s->sampling_rate) {
+ /* SCI(F) has a fixed sampling rate */
+ min_sr = max_sr = s->sampling_rate / 2;
+ } else {
+ /* HSCIF has a variable 1/(8..32) sampling rate */
+ min_sr = 8;
+ max_sr = 32;
+ }
- return ((freq + 16 * bps) / (32 * bps) - 1);
+ for (sr = max_sr; sr >= min_sr; sr--) {
+ err = DIV_ROUND_CLOSEST(freq, sr) - bps;
+ if (abs(err) >= abs(min_err))
+ continue;
+
+ min_err = err;
+ *srr = sr - 1;
+
+ if (!err)
+ break;
+ }
+
+ dev_dbg(s->port.dev, "SCK: %u%+d bps using SR %u\n", bps, min_err,
+ *srr + 1);
+ return min_err;
}
-/* calculate frame length from SMR */
-static int sci_baud_calc_frame_len(unsigned int smr_val)
+static int sci_brg_calc(struct sci_port *s, unsigned int bps,
+ unsigned long freq, unsigned int *dlr,
+ unsigned int *srr)
{
- int len = 10;
+ unsigned int min_sr, max_sr, sr, dl;
+ int err, min_err = INT_MAX;
- if (smr_val & SCSMR_CHR)
- len--;
- if (smr_val & SCSMR_PE)
- len++;
- if (smr_val & SCSMR_STOP)
- len++;
+ if (s->sampling_rate) {
+ /* SCIF has a fixed sampling rate */
+ min_sr = max_sr = s->sampling_rate / 2;
+ } else {
+ /* HSCIF has a variable 1/(8..32) sampling rate */
+ min_sr = 8;
+ max_sr = 32;
+ }
- return len;
+ for (sr = max_sr; sr >= min_sr; sr--) {
+ dl = DIV_ROUND_CLOSEST(freq, sr * bps);
+ dl = clamp(dl, 1U, 65535U);
+
+ err = DIV_ROUND_CLOSEST(freq, sr * dl) - bps;
+ if (abs(err) >= abs(min_err))
+ continue;
+
+ min_err = err;
+ *dlr = dl;
+ *srr = sr - 1;
+
+ if (!err)
+ break;
+ }
+
+ dev_dbg(s->port.dev, "BRG: %u%+d bps using DL %u SR %u\n", bps,
+ min_err, *dlr, *srr + 1);
+ return min_err;
}
-
-/* calculate sample rate, BRR, and clock select for HSCIF */
-static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq,
- int *brr, unsigned int *srr,
- unsigned int *cks, int frame_len)
+/* calculate sample rate, BRR, and clock select */
+static int sci_scbrr_calc(struct sci_port *s, unsigned int bps,
+ unsigned int *brr, unsigned int *srr,
+ unsigned int *cks)
{
- int sr, c, br, err, recv_margin;
- int min_err = 1000; /* 100% */
- int recv_max_margin = 0;
+ unsigned int min_sr, max_sr, shift, sr, br, prediv, scrate, c;
+ unsigned long freq = s->clk_rates[SCI_FCK];
+ int err, min_err = INT_MAX;
- /* Find the combination of sample rate and clock select with the
- smallest deviation from the desired baud rate. */
- for (sr = 8; sr <= 32; sr++) {
+ if (s->sampling_rate) {
+ min_sr = max_sr = s->sampling_rate;
+ shift = 0;
+ } else {
+ /* HSCIF has a variable sample rate */
+ min_sr = 8;
+ max_sr = 32;
+ shift = 1;
+ }
+
+ /*
+ * Find the combination of sample rate and clock select with the
+ * smallest deviation from the desired baud rate.
+ * Prefer high sample rates to maximise the receive margin.
+ *
+ * M: Receive margin (%)
+ * N: Ratio of bit rate to clock (N = sampling rate)
+ * D: Clock duty (D = 0 to 1.0)
+ * L: Frame length (L = 9 to 12)
+ * F: Absolute value of clock frequency deviation
+ *
+ * M = |(0.5 - 1 / 2 * N) - ((L - 0.5) * F) -
+ * (|D - 0.5| / N * (1 + F))|
+ * NOTE: Usually, treat D for 0.5, F is 0 by this calculation.
+ */
+ for (sr = max_sr; sr >= min_sr; sr--) {
for (c = 0; c <= 3; c++) {
/* integerized formulas from HSCIF documentation */
- br = DIV_ROUND_CLOSEST(freq, (sr *
- (1 << (2 * c + 1)) * bps)) - 1;
- br = clamp(br, 0, 255);
- err = DIV_ROUND_CLOSEST(freq, ((br + 1) * bps * sr *
- (1 << (2 * c + 1)) / 1000)) -
- 1000;
- /* Calc recv margin
- * M: Receive margin (%)
- * N: Ratio of bit rate to clock (N = sampling rate)
- * D: Clock duty (D = 0 to 1.0)
- * L: Frame length (L = 9 to 12)
- * F: Absolute value of clock frequency deviation
+ prediv = sr * (1 << (2 * c + shift));
+
+ /*
+ * We need to calculate:
*
- * M = |(0.5 - 1 / 2 * N) - ((L - 0.5) * F) -
- * (|D - 0.5| / N * (1 + F))|
- * NOTE: Usually, treat D for 0.5, F is 0 by this
- * calculation.
+ * br = freq / (prediv * bps) clamped to [1..256]
+ * err = freq / (br * prediv) - bps
+ *
+ * Watch out for overflow when calculating the desired
+ * sampling clock rate!
*/
- recv_margin = abs((500 -
- DIV_ROUND_CLOSEST(1000, sr << 1)) / 10);
- if (abs(min_err) > abs(err)) {
- min_err = err;
- recv_max_margin = recv_margin;
- } else if ((min_err == err) &&
- (recv_margin > recv_max_margin))
- recv_max_margin = recv_margin;
- else
+ if (bps > UINT_MAX / prediv)
+ break;
+
+ scrate = prediv * bps;
+ br = DIV_ROUND_CLOSEST(freq, scrate);
+ br = clamp(br, 1U, 256U);
+
+ err = DIV_ROUND_CLOSEST(freq, br * prediv) - bps;
+ if (abs(err) >= abs(min_err))
continue;
- *brr = br;
+ min_err = err;
+ *brr = br - 1;
*srr = sr - 1;
*cks = c;
+
+ if (!err)
+ goto found;
}
}
- if (min_err == 1000) {
- WARN_ON(1);
- /* use defaults */
- *brr = 255;
- *srr = 15;
- *cks = 0;
- }
+found:
+ dev_dbg(s->port.dev, "BRR: %u%+d bps using N %u SR %u cks %u\n", bps,
+ min_err, *brr, *srr + 1, *cks);
+ return min_err;
}
static void sci_reset(struct uart_port *port)
@@ -1969,11 +2062,14 @@
static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
+ unsigned int baud, smr_val = 0, scr_val = 0, i;
+ unsigned int brr = 255, cks = 0, srr = 15, dl = 0, sccks = 0;
+ unsigned int brr1 = 255, cks1 = 0, srr1 = 15, dl1 = 0;
struct sci_port *s = to_sci_port(port);
const struct plat_sci_reg *reg;
- unsigned int baud, smr_val = 0, max_baud, cks = 0;
- int t = -1;
- unsigned int srr = 15;
+ int min_err = INT_MAX, err;
+ unsigned long max_freq = 0;
+ int best_clk = -1;
if ((termios->c_cflag & CSIZE) == CS7)
smr_val |= SCSMR_CHR;
@@ -1992,41 +2088,123 @@
* that the previous boot loader has enabled required clocks and
* setup the baud rate generator hardware for us already.
*/
- max_baud = port->uartclk ? port->uartclk / 16 : 115200;
+ if (!port->uartclk) {
+ baud = uart_get_baud_rate(port, termios, old, 0, 115200);
+ goto done;
+ }
- baud = uart_get_baud_rate(port, termios, old, 0, max_baud);
- if (likely(baud && port->uartclk)) {
- if (s->cfg->type == PORT_HSCIF) {
- int frame_len = sci_baud_calc_frame_len(smr_val);
- sci_baud_calc_hscif(baud, port->uartclk, &t, &srr,
- &cks, frame_len);
- } else {
- t = sci_scbrr_calc(s, baud, port->uartclk);
- for (cks = 0; t >= 256 && cks <= 3; cks++)
- t >>= 2;
+ for (i = 0; i < SCI_NUM_CLKS; i++)
+ max_freq = max(max_freq, s->clk_rates[i]);
+
+ baud = uart_get_baud_rate(port, termios, old, 0,
+ max_freq / max(s->sampling_rate, 8U));
+ if (!baud)
+ goto done;
+
+ /*
+ * There can be multiple sources for the sampling clock. Find the one
+ * that gives us the smallest deviation from the desired baud rate.
+ */
+
+ /* Optional Undivided External Clock */
+ if (s->clk_rates[SCI_SCK] && port->type != PORT_SCIFA &&
+ port->type != PORT_SCIFB) {
+ err = sci_sck_calc(s, baud, &srr1);
+ if (abs(err) < abs(min_err)) {
+ best_clk = SCI_SCK;
+ scr_val = SCSCR_CKE1;
+ sccks = SCCKS_CKS;
+ min_err = err;
+ srr = srr1;
+ if (!err)
+ goto done;
}
}
+ /* Optional BRG Frequency Divided External Clock */
+ if (s->clk_rates[SCI_SCIF_CLK] && sci_getreg(port, SCDL)->size) {
+ err = sci_brg_calc(s, baud, s->clk_rates[SCI_SCIF_CLK], &dl1,
+ &srr1);
+ if (abs(err) < abs(min_err)) {
+ best_clk = SCI_SCIF_CLK;
+ scr_val = SCSCR_CKE1;
+ sccks = 0;
+ min_err = err;
+ dl = dl1;
+ srr = srr1;
+ if (!err)
+ goto done;
+ }
+ }
+
+ /* Optional BRG Frequency Divided Internal Clock */
+ if (s->clk_rates[SCI_BRG_INT] && sci_getreg(port, SCDL)->size) {
+ err = sci_brg_calc(s, baud, s->clk_rates[SCI_BRG_INT], &dl1,
+ &srr1);
+ if (abs(err) < abs(min_err)) {
+ best_clk = SCI_BRG_INT;
+ scr_val = SCSCR_CKE1;
+ sccks = SCCKS_XIN;
+ min_err = err;
+ dl = dl1;
+ srr = srr1;
+ if (!min_err)
+ goto done;
+ }
+ }
+
+ /* Divided Functional Clock using standard Bit Rate Register */
+ err = sci_scbrr_calc(s, baud, &brr1, &srr1, &cks1);
+ if (abs(err) < abs(min_err)) {
+ best_clk = SCI_FCK;
+ scr_val = 0;
+ min_err = err;
+ brr = brr1;
+ srr = srr1;
+ cks = cks1;
+ }
+
+done:
+ if (best_clk >= 0)
+ dev_dbg(port->dev, "Using clk %pC for %u%+d bps\n",
+ s->clks[best_clk], baud, min_err);
+
sci_port_enable(s);
+ /*
+ * Program the optional External Baud Rate Generator (BRG) first.
+ * It controls the mux to select (H)SCK or frequency divided clock.
+ */
+ if (best_clk >= 0 && sci_getreg(port, SCCKS)->size) {
+ serial_port_out(port, SCDL, dl);
+ serial_port_out(port, SCCKS, sccks);
+ }
+
sci_reset(port);
- smr_val |= serial_port_in(port, SCSMR) & SCSMR_CKS;
-
uart_update_timeout(port, termios->c_cflag, baud);
- dev_dbg(port->dev, "%s: SMR %x, cks %x, t %x, SCSCR %x\n",
- __func__, smr_val, cks, t, s->cfg->scscr);
-
- if (t >= 0) {
- serial_port_out(port, SCSMR, (smr_val & ~SCSMR_CKS) | cks);
- serial_port_out(port, SCBRR, t);
- reg = sci_getreg(port, HSSRR);
- if (reg->size)
- serial_port_out(port, HSSRR, srr | HSCIF_SRE);
- udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
- } else
+ if (best_clk >= 0) {
+ smr_val |= cks;
+ dev_dbg(port->dev,
+ "SCR 0x%x SMR 0x%x BRR %u CKS 0x%x DL %u SRR %u\n",
+ scr_val, smr_val, brr, sccks, dl, srr);
+ serial_port_out(port, SCSCR, scr_val);
serial_port_out(port, SCSMR, smr_val);
+ serial_port_out(port, SCBRR, brr);
+ if (sci_getreg(port, HSSRR)->size)
+ serial_port_out(port, HSSRR, srr | HSCIF_SRE);
+
+ /* Wait one bit interval */
+ udelay((1000000 + (baud - 1)) / baud);
+ } else {
+ /* Don't touch the bit rate configuration */
+ scr_val = s->cfg->scscr & (SCSCR_CKE1 | SCSCR_CKE0);
+ smr_val |= serial_port_in(port, SCSMR) & SCSMR_CKS;
+ dev_dbg(port->dev, "SCR 0x%x SMR 0x%x\n", scr_val, smr_val);
+ serial_port_out(port, SCSCR, scr_val);
+ serial_port_out(port, SCSMR, smr_val);
+ }
sci_init_pins(port, termios->c_cflag);
@@ -2051,7 +2229,9 @@
serial_port_out(port, SCFCR, ctrl);
}
- serial_port_out(port, SCSCR, s->cfg->scscr);
+ scr_val |= s->cfg->scscr & ~(SCSCR_CKE1 | SCSCR_CKE0);
+ dev_dbg(port->dev, "SCSCR 0x%x\n", scr_val);
+ serial_port_out(port, SCSCR, scr_val);
#ifdef CONFIG_SERIAL_SH_SCI_DMA
/*
@@ -2241,6 +2421,63 @@
#endif
};
+static int sci_init_clocks(struct sci_port *sci_port, struct device *dev)
+{
+ const char *clk_names[] = {
+ [SCI_FCK] = "fck",
+ [SCI_SCK] = "sck",
+ [SCI_BRG_INT] = "brg_int",
+ [SCI_SCIF_CLK] = "scif_clk",
+ };
+ struct clk *clk;
+ unsigned int i;
+
+ if (sci_port->cfg->type == PORT_HSCIF)
+ clk_names[SCI_SCK] = "hsck";
+
+ for (i = 0; i < SCI_NUM_CLKS; i++) {
+ clk = devm_clk_get(dev, clk_names[i]);
+ if (PTR_ERR(clk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ if (IS_ERR(clk) && i == SCI_FCK) {
+ /*
+ * "fck" used to be called "sci_ick", and we need to
+ * maintain DT backward compatibility.
+ */
+ clk = devm_clk_get(dev, "sci_ick");
+ if (PTR_ERR(clk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ if (!IS_ERR(clk))
+ goto found;
+
+ /*
+ * Not all SH platforms declare a clock lookup entry
+ * for SCI devices, in which case we need to get the
+ * global "peripheral_clk" clock.
+ */
+ clk = devm_clk_get(dev, "peripheral_clk");
+ if (!IS_ERR(clk))
+ goto found;
+
+ dev_err(dev, "failed to get %s (%ld)\n", clk_names[i],
+ PTR_ERR(clk));
+ return PTR_ERR(clk);
+ }
+
+found:
+ if (IS_ERR(clk))
+ dev_dbg(dev, "failed to get %s (%ld)\n", clk_names[i],
+ PTR_ERR(clk));
+ else
+ dev_dbg(dev, "clk %s is %pC rate %pCr\n", clk_names[i],
+ clk, clk);
+ sci_port->clks[i] = IS_ERR(clk) ? NULL : clk;
+ }
+ return 0;
+}
+
static int sci_init_single(struct platform_device *dev,
struct sci_port *sci_port, unsigned int index,
struct plat_sci_port *p, bool early)
@@ -2333,22 +2570,9 @@
sci_port->sampling_rate = p->sampling_rate;
if (!early) {
- sci_port->iclk = clk_get(&dev->dev, "sci_ick");
- if (IS_ERR(sci_port->iclk)) {
- sci_port->iclk = clk_get(&dev->dev, "peripheral_clk");
- if (IS_ERR(sci_port->iclk)) {
- dev_err(&dev->dev, "can't get iclk\n");
- return PTR_ERR(sci_port->iclk);
- }
- }
-
- /*
- * The function clock is optional, ignore it if we can't
- * find it.
- */
- sci_port->fclk = clk_get(&dev->dev, "sci_fck");
- if (IS_ERR(sci_port->fclk))
- sci_port->fclk = NULL;
+ ret = sci_init_clocks(sci_port, &dev->dev);
+ if (ret < 0)
+ return ret;
port->dev = &dev->dev;
@@ -2405,9 +2629,6 @@
static void sci_cleanup_single(struct sci_port *port)
{
- clk_put(port->iclk);
- clk_put(port->fclk);
-
pm_runtime_disable(port->port.dev);
}
@@ -2426,7 +2647,7 @@
{
struct sci_port *sci_port = &sci_ports[co->index];
struct uart_port *port = &sci_port->port;
- unsigned short bits, ctrl;
+ unsigned short bits, ctrl, ctrl_temp;
unsigned long flags;
int locked = 1;
@@ -2438,9 +2659,11 @@
else
spin_lock(&port->lock);
- /* first save the SCSCR then disable the interrupts */
+ /* first save SCSCR then disable interrupts, keep clock source */
ctrl = serial_port_in(port, SCSCR);
- serial_port_out(port, SCSCR, sci_port->cfg->scscr);
+ ctrl_temp = (sci_port->cfg->scscr & ~(SCSCR_CKE1 | SCSCR_CKE0)) |
+ (ctrl & (SCSCR_CKE1 | SCSCR_CKE0));
+ serial_port_out(port, SCSCR, ctrl_temp);
uart_console_write(port, s, count, serial_console_putchar);
@@ -2559,9 +2782,6 @@
{
struct sci_port *port = platform_get_drvdata(dev);
- cpufreq_unregister_notifier(&port->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
-
uart_remove_one_port(&sci_uart_driver, &port->port);
sci_cleanup_single(port);
@@ -2569,42 +2789,44 @@
return 0;
}
-struct sci_port_info {
- unsigned int type;
- unsigned int regtype;
-};
+
+#define SCI_OF_DATA(type, regtype) (void *)((type) << 16 | (regtype))
+#define SCI_OF_TYPE(data) ((unsigned long)(data) >> 16)
+#define SCI_OF_REGTYPE(data) ((unsigned long)(data) & 0xffff)
static const struct of_device_id of_sci_match[] = {
+ /* SoC-specific types */
+ {
+ .compatible = "renesas,scif-r7s72100",
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH2_SCIF_FIFODATA_REGTYPE),
+ },
+ /* Family-specific types */
+ {
+ .compatible = "renesas,rcar-gen1-scif",
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH4_SCIF_BRG_REGTYPE),
+ }, {
+ .compatible = "renesas,rcar-gen2-scif",
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH4_SCIF_BRG_REGTYPE),
+ }, {
+ .compatible = "renesas,rcar-gen3-scif",
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH4_SCIF_BRG_REGTYPE),
+ },
+ /* Generic types */
{
.compatible = "renesas,scif",
- .data = &(const struct sci_port_info) {
- .type = PORT_SCIF,
- .regtype = SCIx_SH4_SCIF_REGTYPE,
- },
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH4_SCIF_REGTYPE),
}, {
.compatible = "renesas,scifa",
- .data = &(const struct sci_port_info) {
- .type = PORT_SCIFA,
- .regtype = SCIx_SCIFA_REGTYPE,
- },
+ .data = SCI_OF_DATA(PORT_SCIFA, SCIx_SCIFA_REGTYPE),
}, {
.compatible = "renesas,scifb",
- .data = &(const struct sci_port_info) {
- .type = PORT_SCIFB,
- .regtype = SCIx_SCIFB_REGTYPE,
- },
+ .data = SCI_OF_DATA(PORT_SCIFB, SCIx_SCIFB_REGTYPE),
}, {
.compatible = "renesas,hscif",
- .data = &(const struct sci_port_info) {
- .type = PORT_HSCIF,
- .regtype = SCIx_HSCIF_REGTYPE,
- },
+ .data = SCI_OF_DATA(PORT_HSCIF, SCIx_HSCIF_REGTYPE),
}, {
.compatible = "renesas,sci",
- .data = &(const struct sci_port_info) {
- .type = PORT_SCI,
- .regtype = SCIx_SCI_REGTYPE,
- },
+ .data = SCI_OF_DATA(PORT_SCI, SCIx_SCI_REGTYPE),
}, {
/* Terminator */
},
@@ -2616,24 +2838,21 @@
{
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
- const struct sci_port_info *info;
struct plat_sci_port *p;
int id;
if (!IS_ENABLED(CONFIG_OF) || !np)
return NULL;
- match = of_match_node(of_sci_match, pdev->dev.of_node);
+ match = of_match_node(of_sci_match, np);
if (!match)
return NULL;
- info = match->data;
-
p = devm_kzalloc(&pdev->dev, sizeof(struct plat_sci_port), GFP_KERNEL);
if (!p)
return NULL;
- /* Get the line number for the aliases node. */
+ /* Get the line number from the aliases node. */
id = of_alias_get_id(np, "serial");
if (id < 0) {
dev_err(&pdev->dev, "failed to get alias id (%d)\n", id);
@@ -2643,8 +2862,8 @@
*dev_id = id;
p->flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF;
- p->type = info->type;
- p->regtype = info->regtype;
+ p->type = SCI_OF_TYPE(match->data);
+ p->regtype = SCI_OF_REGTYPE(match->data);
p->scscr = SCSCR_RE | SCSCR_TE;
return p;
@@ -2714,16 +2933,6 @@
if (ret)
return ret;
- sp->freq_transition.notifier_call = sci_notifier;
-
- ret = cpufreq_register_notifier(&sp->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
- if (unlikely(ret < 0)) {
- uart_remove_one_port(&sci_uart_driver, &sp->port);
- sci_cleanup_single(sp);
- return ret;
- }
-
#ifdef CONFIG_SH_STANDARD_BIOS
sh_bios_gdb_detach();
#endif
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h
index bf69bbd..fb17602 100644
--- a/drivers/tty/serial/sh-sci.h
+++ b/drivers/tty/serial/sh-sci.h
@@ -27,6 +27,8 @@
HSSRR, /* Sampling Rate Register */
SCPCR, /* Serial Port Control Register */
SCPDR, /* Serial Port Data Register */
+ SCDL, /* BRG Frequency Division Register */
+ SCCKS, /* BRG Clock Select Register */
SCIx_NR_REGS,
};
@@ -109,6 +111,14 @@
#define SCPDR_RTSD BIT(4) /* Serial Port RTS Output Pin Data */
#define SCPDR_CTSD BIT(3) /* Serial Port CTS Input Pin Data */
+/*
+ * BRG Clock Select Register (Some SCIF and HSCIF)
+ * The Baud Rate Generator for external clock can provide a clock source for
+ * the sampling clock. It outputs either its frequency divided clock, or the
+ * (undivided) (H)SCK external clock.
+ */
+#define SCCKS_CKS BIT(15) /* Select (H)SCK (1) or divided SC_CLK (0) */
+#define SCCKS_XIN BIT(14) /* SC_CLK uses bus clock (1) or SCIF_CLK (0) */
#define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND)
#define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF)
diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index 9dbae01..ef26c4a 100644
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -517,7 +517,7 @@
};
#ifdef CONFIG_SERIAL_SPRD_CONSOLE
-static inline void wait_for_xmitr(struct uart_port *port)
+static void wait_for_xmitr(struct uart_port *port)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index e124d2e..9ad98ea 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -1262,7 +1262,7 @@
/*
* Wait for transmitter & holding register to empty
*/
-static __inline__ void wait_for_xmitr(struct uart_sunsu_port *up)
+static void wait_for_xmitr(struct uart_sunsu_port *up)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 4079ec5..b384060 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -485,7 +485,7 @@
#ifdef CONFIG_SERIAL_VT8500_CONSOLE
-static inline void wait_for_xmitr(struct uart_port *port)
+static void wait_for_xmitr(struct uart_port *port)
{
unsigned int status, tmout = 10000;
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 6fc39fb..5505ea8 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -89,7 +89,7 @@
* module identification
*/
static char *driver_name = "SyncLink GT";
-static char *tty_driver_name = "synclink_gt";
+static char *slgt_driver_name = "synclink_gt";
static char *tty_dev_prefix = "ttySLG";
MODULE_LICENSE("GPL");
#define MGSL_MAGIC 0x5401
@@ -3799,7 +3799,7 @@
/* Initialize the tty_driver structure */
- serial_driver->driver_name = tty_driver_name;
+ serial_driver->driver_name = slgt_driver_name;
serial_driver->name = tty_dev_prefix;
serial_driver->major = ttymajor;
serial_driver->minor_start = 64;
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index bcc8e1e8..892c923 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -256,19 +256,24 @@
EXPORT_SYMBOL(tty_name);
-int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
+const char *tty_driver_name(const struct tty_struct *tty)
+{
+ if (!tty || !tty->driver)
+ return "";
+ return tty->driver->name;
+}
+
+static int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
const char *routine)
{
#ifdef TTY_PARANOIA_CHECK
if (!tty) {
- printk(KERN_WARNING
- "null TTY for (%d:%d) in %s\n",
+ pr_warn("(%d:%d): %s: NULL tty\n",
imajor(inode), iminor(inode), routine);
return 1;
}
if (tty->magic != TTY_MAGIC) {
- printk(KERN_WARNING
- "bad magic number for tty struct (%d:%d) in %s\n",
+ pr_warn("(%d:%d): %s: bad magic number\n",
imajor(inode), iminor(inode), routine);
return 1;
}
@@ -293,9 +298,8 @@
tty->link && tty->link->count)
count++;
if (tty->count != count) {
- printk(KERN_WARNING "Warning: dev (%s) tty->count(%d) "
- "!= #fd's(%d) in %s\n",
- tty->name, tty->count, count, routine);
+ tty_warn(tty, "%s: tty->count(%d) != #fd's(%d)\n",
+ routine, tty->count, count);
return count;
}
#endif
@@ -420,10 +424,8 @@
}
rcu_read_unlock();
- if (!tty_pgrp) {
- pr_warn("%s: tty_check_change: sig=%d, tty->pgrp == NULL!\n",
- tty_name(tty), sig);
- }
+ if (!tty_pgrp)
+ tty_warn(tty, "sig=%d, tty->pgrp == NULL!\n", sig);
return ret;
}
@@ -781,7 +783,7 @@
void tty_hangup(struct tty_struct *tty)
{
- tty_debug_hangup(tty, "\n");
+ tty_debug_hangup(tty, "hangup\n");
schedule_work(&tty->hangup_work);
}
@@ -798,7 +800,7 @@
void tty_vhangup(struct tty_struct *tty)
{
- tty_debug_hangup(tty, "\n");
+ tty_debug_hangup(tty, "vhangup\n");
__tty_hangup(tty, 0);
}
@@ -835,7 +837,7 @@
static void tty_vhangup_session(struct tty_struct *tty)
{
- tty_debug_hangup(tty, "\n");
+ tty_debug_hangup(tty, "session hangup\n");
__tty_hangup(tty, 1);
}
@@ -1239,8 +1241,7 @@
return -EIO;
/* Short term debug to catch buggy drivers */
if (tty->ops->write_room == NULL)
- printk(KERN_ERR "tty driver %s lacks a write_room method.\n",
- tty->driver->name);
+ tty_err(tty, "missing write_room method\n");
ld = tty_ldisc_ref_wait(tty);
if (!ld->ops->write)
ret = -EIO;
@@ -1561,8 +1562,8 @@
/* call the tty release_tty routine to clean out this slot */
err_release_tty:
tty_unlock(tty);
- printk_ratelimited(KERN_INFO "tty_init_dev: ldisc open failed, "
- "clearing slot %d\n", idx);
+ tty_info_ratelimited(tty, "ldisc open failed (%d), clearing slot %d\n",
+ retval, idx);
release_tty(tty, idx);
return ERR_PTR(retval);
}
@@ -1580,10 +1581,8 @@
tp = tty->driver->termios[idx];
if (tp == NULL) {
tp = kmalloc(sizeof(struct ktermios), GFP_KERNEL);
- if (tp == NULL) {
- pr_warn("tty: no memory to save termios state.\n");
+ if (tp == NULL)
return;
- }
tty->driver->termios[idx] = tp;
}
*tp = tty->termios;
@@ -1788,7 +1787,7 @@
return 0;
}
- tty_debug_hangup(tty, "(tty count=%d)...\n", tty->count);
+ tty_debug_hangup(tty, "releasing (count=%d)\n", tty->count);
if (tty->ops->close)
tty->ops->close(tty, filp);
@@ -1837,8 +1836,7 @@
if (once) {
once = 0;
- printk(KERN_WARNING "%s: %s: read/write wait queue active!\n",
- __func__, tty_name(tty));
+ tty_warn(tty, "read/write wait queue active!\n");
}
schedule_timeout_killable(timeout);
if (timeout < 120 * HZ)
@@ -1849,14 +1847,12 @@
if (o_tty) {
if (--o_tty->count < 0) {
- printk(KERN_WARNING "%s: bad pty slave count (%d) for %s\n",
- __func__, o_tty->count, tty_name(o_tty));
+ tty_warn(tty, "bad slave count (%d)\n", o_tty->count);
o_tty->count = 0;
}
}
if (--tty->count < 0) {
- printk(KERN_WARNING "%s: bad tty->count (%d) for %s\n",
- __func__, tty->count, tty_name(tty));
+ tty_warn(tty, "bad tty->count (%d)\n", tty->count);
tty->count = 0;
}
@@ -1907,7 +1903,7 @@
/* Wait for pending work before tty destruction commmences */
tty_flush_works(tty);
- tty_debug_hangup(tty, "freeing structure...\n");
+ tty_debug_hangup(tty, "freeing structure\n");
/*
* The release_tty function takes care of the details of clearing
* the slots and preserving the termios structure. The tty_unlock_pair
@@ -2097,7 +2093,7 @@
tty->driver->subtype == PTY_TYPE_MASTER)
noctty = 1;
- tty_debug_hangup(tty, "(tty count=%d)\n", tty->count);
+ tty_debug_hangup(tty, "opening (count=%d)\n", tty->count);
if (tty->ops->open)
retval = tty->ops->open(tty, filp);
@@ -2106,7 +2102,7 @@
filp->f_flags = saved_flags;
if (retval) {
- tty_debug_hangup(tty, "error %d, releasing...\n", retval);
+ tty_debug_hangup(tty, "open error %d, releasing\n", retval);
tty_unlock(tty); /* need to call tty_release without BTM */
tty_release(inode, filp);
@@ -2870,7 +2866,7 @@
no_tty();
return 0;
case TIOCSCTTY:
- return tiocsctty(tty, file, arg);
+ return tiocsctty(real_tty, file, arg);
case TIOCGPGRP:
return tiocgpgrp(tty, real_tty, p);
case TIOCSPGRP:
@@ -3028,28 +3024,24 @@
read_lock(&tasklist_lock);
/* Kill the entire session */
do_each_pid_task(session, PIDTYPE_SID, p) {
- printk(KERN_NOTICE "SAK: killed process %d"
- " (%s): task_session(p)==tty->session\n",
- task_pid_nr(p), p->comm);
+ tty_notice(tty, "SAK: killed process %d (%s): by session\n",
+ task_pid_nr(p), p->comm);
send_sig(SIGKILL, p, 1);
} while_each_pid_task(session, PIDTYPE_SID, p);
- /* Now kill any processes that happen to have the
- * tty open.
- */
+
+ /* Now kill any processes that happen to have the tty open */
do_each_thread(g, p) {
if (p->signal->tty == tty) {
- printk(KERN_NOTICE "SAK: killed process %d"
- " (%s): task_session(p)==tty->session\n",
- task_pid_nr(p), p->comm);
+ tty_notice(tty, "SAK: killed process %d (%s): by controlling tty\n",
+ task_pid_nr(p), p->comm);
send_sig(SIGKILL, p, 1);
continue;
}
task_lock(p);
i = iterate_fd(p->files, 0, this_tty, tty);
if (i != 0) {
- printk(KERN_NOTICE "SAK: killed process %d"
- " (%s): fd#%d opened to the tty\n",
- task_pid_nr(p), p->comm, i - 1);
+ tty_notice(tty, "SAK: killed process %d (%s): by fd#%d\n",
+ task_pid_nr(p), p->comm, i - 1);
force_sig(SIGKILL, p);
}
task_unlock(p);
@@ -3219,7 +3211,7 @@
static void tty_device_create_release(struct device *dev)
{
- pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
+ dev_dbg(dev, "releasing...\n");
kfree(dev);
}
@@ -3255,8 +3247,8 @@
bool cdev = false;
if (index >= driver->num) {
- printk(KERN_ERR "Attempt to register invalid tty line number "
- " (%d).\n", index);
+ pr_err("%s: Attempt to register invalid tty line number (%d)\n",
+ driver->name, index);
return ERR_PTR(-EINVAL);
}
diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index 1445dd3..0ea3513 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -216,7 +216,7 @@
void tty_wait_until_sent(struct tty_struct *tty, long timeout)
{
- tty_debug_wait_until_sent(tty, "\n");
+ tty_debug_wait_until_sent(tty, "wait until sent, timeout=%ld\n", timeout);
if (!timeout)
timeout = MAX_SCHEDULE_TIMEOUT;
@@ -239,19 +239,14 @@
* Termios Helper Methods
*/
-static void unset_locked_termios(struct ktermios *termios,
- struct ktermios *old,
- struct ktermios *locked)
+static void unset_locked_termios(struct tty_struct *tty, struct ktermios *old)
{
+ struct ktermios *termios = &tty->termios;
+ struct ktermios *locked = &tty->termios_locked;
int i;
#define NOSET_MASK(x, y, z) (x = ((x) & ~(z)) | ((y) & (z)))
- if (!locked) {
- printk(KERN_WARNING "Warning?!? termios_locked is NULL.\n");
- return;
- }
-
NOSET_MASK(termios->c_iflag, old->c_iflag, locked->c_iflag);
NOSET_MASK(termios->c_oflag, old->c_oflag, locked->c_oflag);
NOSET_MASK(termios->c_cflag, old->c_cflag, locked->c_cflag);
@@ -463,10 +458,8 @@
if (ifound == -1 && (ibaud != obaud || ibinput))
termios->c_cflag |= (BOTHER << IBSHIFT);
#else
- if (ifound == -1 || ofound == -1) {
- printk_once(KERN_WARNING "tty: Unable to return correct "
- "speed data as your architecture needs updating.\n");
- }
+ if (ifound == -1 || ofound == -1)
+ pr_warn_once("tty: Unable to return correct speed data as your architecture needs updating.\n");
#endif
}
EXPORT_SYMBOL_GPL(tty_termios_encode_baud_rate);
@@ -556,7 +549,7 @@
down_write(&tty->termios_rwsem);
old_termios = tty->termios;
tty->termios = *new_termios;
- unset_locked_termios(&tty->termios, &old_termios, &tty->termios_locked);
+ unset_locked_termios(tty, &old_termios);
if (tty->ops->set_termios)
tty->ops->set_termios(tty, &old_termios);
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 629e3c8..a054d03 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -185,7 +185,7 @@
*
* Complement of tty_ldisc_get().
*/
-static inline void tty_ldisc_put(struct tty_ldisc *ld)
+static void tty_ldisc_put(struct tty_ldisc *ld)
{
if (WARN_ON_ONCE(!ld))
return;
@@ -417,6 +417,10 @@
* they are not on hot paths so a little discipline won't do
* any harm.
*
+ * The line discipline-related tty_struct fields are reset to
+ * prevent the ldisc driver from re-using stale information for
+ * the new ldisc instance.
+ *
* Locking: takes termios_rwsem
*/
@@ -425,6 +429,9 @@
down_write(&tty->termios_rwsem);
tty->termios.c_line = num;
up_write(&tty->termios_rwsem);
+
+ tty->disc_data = NULL;
+ tty->receive_room = 0;
}
/**
@@ -529,34 +536,21 @@
tty_lock(tty);
retval = tty_ldisc_lock(tty, 5 * HZ);
- if (retval) {
- tty_ldisc_put(new_ldisc);
- tty_unlock(tty);
- return retval;
- }
+ if (retval)
+ goto err;
- /*
- * Check the no-op case
- */
+ /* Check the no-op case */
+ if (tty->ldisc->ops->num == ldisc)
+ goto out;
- if (tty->ldisc->ops->num == ldisc) {
- tty_ldisc_unlock(tty);
- tty_ldisc_put(new_ldisc);
- tty_unlock(tty);
- return 0;
+ if (test_bit(TTY_HUPPED, &tty->flags)) {
+ /* We were raced by hangup */
+ retval = -EIO;
+ goto out;
}
old_ldisc = tty->ldisc;
- if (test_bit(TTY_HUPPED, &tty->flags)) {
- /* We were raced by the hangup method. It will have stomped
- the ldisc data and closed the ldisc down */
- tty_ldisc_unlock(tty);
- tty_ldisc_put(new_ldisc);
- tty_unlock(tty);
- return -EIO;
- }
-
/* Shutdown the old discipline. */
tty_ldisc_close(tty, old_ldisc);
@@ -582,18 +576,15 @@
the old ldisc (if it was restored as part of error cleanup
above). In either case, releasing a single reference from
the old ldisc is correct. */
-
- tty_ldisc_put(old_ldisc);
-
- /*
- * Allow ldisc referencing to occur again
- */
+ new_ldisc = old_ldisc;
+out:
tty_ldisc_unlock(tty);
/* Restart the work queue in case no characters kick it off. Safe if
already running */
tty_buffer_restart_work(tty->port);
-
+err:
+ tty_ldisc_put(new_ldisc); /* drop the extra reference */
tty_unlock(tty);
return retval;
}
diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c
index ad7eba5..1bf8ed1 100644
--- a/drivers/tty/tty_ldsem.c
+++ b/drivers/tty/tty_ldsem.c
@@ -319,7 +319,7 @@
-static inline int __ldsem_down_read_nested(struct ld_semaphore *sem,
+static int __ldsem_down_read_nested(struct ld_semaphore *sem,
int subclass, long timeout)
{
long count;
@@ -338,7 +338,7 @@
return 1;
}
-static inline int __ldsem_down_write_nested(struct ld_semaphore *sem,
+static int __ldsem_down_write_nested(struct ld_semaphore *sem,
int subclass, long timeout)
{
long count;
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c
index 0efcf71..77703a39 100644
--- a/drivers/tty/tty_mutex.c
+++ b/drivers/tty/tty_mutex.c
@@ -12,11 +12,8 @@
void __lockfunc tty_lock(struct tty_struct *tty)
{
- if (tty->magic != TTY_MAGIC) {
- pr_err("L Bad %p\n", tty);
- WARN_ON(1);
+ if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty))
return;
- }
tty_kref_get(tty);
mutex_lock(&tty->legacy_mutex);
}
@@ -24,11 +21,8 @@
void __lockfunc tty_unlock(struct tty_struct *tty)
{
- if (tty->magic != TTY_MAGIC) {
- pr_err("U Bad %p\n", tty);
- WARN_ON(1);
+ if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty))
return;
- }
mutex_unlock(&tty->legacy_mutex);
tty_kref_put(tty);
}
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 482f33f..846ed48 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -462,14 +462,13 @@
spin_lock_irqsave(&port->lock, flags);
if (tty->count == 1 && port->count != 1) {
- printk(KERN_WARNING
- "tty_port_close_start: tty->count = 1 port count = %d.\n",
- port->count);
+ tty_warn(tty, "%s: tty->count = 1 port count = %d\n", __func__,
+ port->count);
port->count = 1;
}
if (--port->count < 0) {
- printk(KERN_WARNING "tty_port_close_start: count = %d\n",
- port->count);
+ tty_warn(tty, "%s: bad port count (%d)\n", __func__,
+ port->count);
port->count = 0;
}
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 4462d16..e7cbc44 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -634,7 +634,7 @@
vc->vc_pos = vc->vc_origin + vc->vc_size_row * vc->vc_y + 2 * vc->vc_x;
}
-static inline void save_screen(struct vc_data *vc)
+static void save_screen(struct vc_data *vc)
{
WARN_CONSOLE_UNLOCKED();
diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h
index 0ddb5c0..d76a19b 100644
--- a/include/linux/amba/serial.h
+++ b/include/linux/amba/serial.h
@@ -65,6 +65,24 @@
#define ST_UART011_ABCR 0x100 /* Autobaud control register. */
#define ST_UART011_ABIMSC 0x15C /* Autobaud interrupt mask/clear register. */
+/*
+ * ZTE UART register offsets. This UART has a radically different address
+ * allocation from the ARM and ST variants, so we list all registers here.
+ * We assume unlisted registers do not exist.
+ */
+#define ZX_UART011_DR 0x04
+#define ZX_UART011_FR 0x14
+#define ZX_UART011_IBRD 0x24
+#define ZX_UART011_FBRD 0x28
+#define ZX_UART011_LCRH 0x30
+#define ZX_UART011_CR 0x34
+#define ZX_UART011_IFLS 0x38
+#define ZX_UART011_IMSC 0x40
+#define ZX_UART011_RIS 0x44
+#define ZX_UART011_MIS 0x48
+#define ZX_UART011_ICR 0x4c
+#define ZX_UART011_DMACR 0x50
+
#define UART011_DR_OE (1 << 11)
#define UART011_DR_BE (1 << 10)
#define UART011_DR_PE (1 << 9)
diff --git a/include/linux/nwpserial.h b/include/linux/nwpserial.h
deleted file mode 100644
index 9acb215..0000000
--- a/include/linux/nwpserial.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Serial Port driver for a NWP uart device
- *
- * Copyright (C) 2008 IBM Corp., Benjamin Krill <ben@codiert.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-#ifndef _NWPSERIAL_H
-#define _NWPSERIAL_H
-
-int nwpserial_register_port(struct uart_port *port);
-void nwpserial_unregister_port(int line);
-
-#endif /* _NWPSERIAL_H */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 297d4fa..e03d6ba 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -145,11 +145,12 @@
#define UPIO_PORT (SERIAL_IO_PORT) /* 8b I/O port access */
#define UPIO_HUB6 (SERIAL_IO_HUB6) /* Hub6 ISA card */
-#define UPIO_MEM (SERIAL_IO_MEM) /* 8b MMIO access */
+#define UPIO_MEM (SERIAL_IO_MEM) /* driver-specific */
#define UPIO_MEM32 (SERIAL_IO_MEM32) /* 32b little endian */
#define UPIO_AU (SERIAL_IO_AU) /* Au1x00 and RT288x type IO */
#define UPIO_TSI (SERIAL_IO_TSI) /* Tsi108/109 type IO */
#define UPIO_MEM32BE (SERIAL_IO_MEM32BE) /* 32b big endian */
+#define UPIO_MEM16 (SERIAL_IO_MEM16) /* 16b little endian */
unsigned int read_status_mask; /* driver specific */
unsigned int ignore_status_mask; /* driver specific */
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index 7c536ac..9f2bfd0 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -32,6 +32,7 @@
SCIx_SH2_SCIF_FIFODATA_REGTYPE,
SCIx_SH3_SCIF_REGTYPE,
SCIx_SH4_SCIF_REGTYPE,
+ SCIx_SH4_SCIF_BRG_REGTYPE,
SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
SCIx_SH4_SCIF_FIFODATA_REGTYPE,
SCIx_SH7705_SCIF_REGTYPE,
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 5e31f1b..2fd8708 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -345,8 +345,6 @@
#define TTY_HUPPED 18 /* Post driver->hangup() */
#define TTY_LDISC_HALTED 22 /* Line discipline is halted */
-#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
-
/* Values for tty->flow_change */
#define TTY_THROTTLE_SAFE 1
#define TTY_UNTHROTTLE_SAFE 2
@@ -395,8 +393,6 @@
{ return 0; }
#endif
-extern void tty_write_flush(struct tty_struct *);
-
extern struct ktermios tty_std_termios;
extern int vcs_init(void);
@@ -419,9 +415,8 @@
return tty;
}
-extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
- const char *routine);
extern const char *tty_name(const struct tty_struct *tty);
+extern const char *tty_driver_name(const struct tty_struct *tty);
extern void tty_wait_until_sent(struct tty_struct *tty, long timeout);
extern int __tty_check_change(struct tty_struct *tty, int sig);
extern int tty_check_change(struct tty_struct *tty);
@@ -667,10 +662,16 @@
static inline void proc_tty_unregister_driver(struct tty_driver *d) {}
#endif
-#define tty_debug(tty, f, args...) \
- do { \
- printk(KERN_DEBUG "%s: %s: " f, __func__, \
- tty_name(tty), ##args); \
- } while (0)
+#define tty_msg(fn, tty, f, ...) \
+ fn("%s %s: " f, tty_driver_name(tty), tty_name(tty), ##__VA_ARGS__)
+
+#define tty_debug(tty, f, ...) tty_msg(pr_debug, tty, f, ##__VA_ARGS__)
+#define tty_info(tty, f, ...) tty_msg(pr_info, tty, f, ##__VA_ARGS__)
+#define tty_notice(tty, f, ...) tty_msg(pr_notice, tty, f, ##__VA_ARGS__)
+#define tty_warn(tty, f, ...) tty_msg(pr_warn, tty, f, ##__VA_ARGS__)
+#define tty_err(tty, f, ...) tty_msg(pr_err, tty, f, ##__VA_ARGS__)
+
+#define tty_info_ratelimited(tty, f, ...) \
+ tty_msg(pr_info_ratelimited, tty, f, ##__VA_ARGS__)
#endif
diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h
index 25331f9..5d59c3e 100644
--- a/include/uapi/linux/serial.h
+++ b/include/uapi/linux/serial.h
@@ -69,6 +69,7 @@
#define SERIAL_IO_AU 4
#define SERIAL_IO_TSI 5
#define SERIAL_IO_MEM32BE 6
+#define SERIAL_IO_MEM16 7
#define UART_CLEAR_FIFO 0x01
#define UART_USE_FIFO 0x02
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index 93ba148..3e5d757 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -176,7 +176,7 @@
#define PORT_S3C6400 84
-/* NWPSERIAL */
+/* NWPSERIAL, now removed */
#define PORT_NWPSERIAL 85
/* MAX3100 */