[ARM] ep93xx: convert to clkdev and match clocks by struct device where possible
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6fe71af..995a1bf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -276,6 +276,7 @@
select ARM_VIC
select GENERIC_GPIO
select HAVE_CLK
+ select COMMON_CLKDEV
select ARCH_REQUIRE_GPIOLIB
help
This enables support for the Cirrus EP93xx series of CPUs.
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index 8c9f249..9604928 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -16,11 +16,12 @@
#include <linux/module.h>
#include <linux/string.h>
#include <linux/io.h>
+
+#include <asm/clkdev.h>
#include <asm/div64.h>
#include <mach/hardware.h>
struct clk {
- char *name;
unsigned long rate;
int users;
u32 enable_reg;
@@ -28,53 +29,33 @@
};
static struct clk clk_uart = {
- .name = "UARTCLK",
.rate = 14745600,
};
-static struct clk clk_pll1 = {
- .name = "pll1",
-};
-static struct clk clk_f = {
- .name = "fclk",
-};
-static struct clk clk_h = {
- .name = "hclk",
-};
-static struct clk clk_p = {
- .name = "pclk",
-};
-static struct clk clk_pll2 = {
- .name = "pll2",
-};
+static struct clk clk_pll1;
+static struct clk clk_f;
+static struct clk clk_h;
+static struct clk clk_p;
+static struct clk clk_pll2;
static struct clk clk_usb_host = {
- .name = "usb_host",
.enable_reg = EP93XX_SYSCON_CLOCK_CONTROL,
.enable_mask = EP93XX_SYSCON_CLOCK_USH_EN,
};
+#define INIT_CK(dev,con,ck) \
+ { .dev_id = dev, .con_id = con, .clk = ck }
-static struct clk *clocks[] = {
- &clk_uart,
- &clk_pll1,
- &clk_f,
- &clk_h,
- &clk_p,
- &clk_pll2,
- &clk_usb_host,
+static struct clk_lookup clocks[] = {
+ INIT_CK("apb:uart1", NULL, &clk_uart),
+ INIT_CK("apb:uart2", NULL, &clk_uart),
+ INIT_CK("apb:uart3", NULL, &clk_uart),
+ INIT_CK(NULL, "pll1", &clk_pll1),
+ INIT_CK(NULL, "fclk", &clk_f),
+ INIT_CK(NULL, "hclk", &clk_h),
+ INIT_CK(NULL, "pclk", &clk_p),
+ INIT_CK(NULL, "pll2", &clk_pll2),
+ INIT_CK(NULL, "usb_host", &clk_usb_host),
};
-struct clk *clk_get(struct device *dev, const char *id)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(clocks); i++) {
- if (!strcmp(clocks[i]->name, id))
- return clocks[i];
- }
-
- return ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(clk_get);
int clk_enable(struct clk *clk)
{
@@ -106,12 +87,6 @@
}
EXPORT_SYMBOL(clk_get_rate);
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-
static char fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 };
static char hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 };
@@ -138,6 +113,7 @@
static int __init ep93xx_clock_init(void)
{
u32 value;
+ int i;
value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1);
if (!(value & 0x00800000)) { /* PLL1 bypassed? */
@@ -165,6 +141,8 @@
clk_f.rate / 1000000, clk_h.rate / 1000000,
clk_p.rate / 1000000);
+ for (i = 0; i < ARRAY_SIZE(clocks); i++)
+ clkdev_add(&clocks[i]);
return 0;
}
arch_initcall(ep93xx_clock_init);
diff --git a/arch/arm/mach-ep93xx/include/mach/clkdev.h b/arch/arm/mach-ep93xx/include/mach/clkdev.h
new file mode 100644
index 0000000..04b37a8
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif