sh: Add OHCI USB support for SH7786
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
index 249b99e..5a47e1c 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
@@ -18,6 +18,7 @@
#include <linux/serial_sci.h>
#include <linux/io.h>
#include <linux/mm.h>
+#include <linux/dma-mapping.h>
#include <asm/mmzone.h>
static struct plat_sci_port sci_platform_data[] = {
@@ -68,12 +69,94 @@
},
};
+static struct resource usb_ohci_resources[] = {
+ [0] = {
+ .start = 0xffe70400,
+ .end = 0xffe704ff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 77,
+ .end = 77,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 usb_ohci_dma_mask = DMA_BIT_MASK(32);
+static struct platform_device usb_ohci_device = {
+ .name = "sh_ohci",
+ .id = -1,
+ .dev = {
+ .dma_mask = &usb_ohci_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(usb_ohci_resources),
+ .resource = usb_ohci_resources,
+};
+
static struct platform_device *sh7786_devices[] __initdata = {
&sci_device,
+ &usb_ohci_device,
};
+
+/*
+ * Please call this function if your platform board
+ * use external clock for USB
+ * */
+#define USBCTL0 0xffe70858
+#define CLOCK_MODE_MASK 0xffffff7f
+#define EXT_CLOCK_MODE 0x00000080
+void __init sh7786_usb_use_exclock(void)
+{
+ u32 val = __raw_readl(USBCTL0) & CLOCK_MODE_MASK;
+ __raw_writel(val | EXT_CLOCK_MODE, USBCTL0);
+}
+
+#define USBINITREG1 0xffe70094
+#define USBINITREG2 0xffe7009c
+#define USBINITVAL1 0x00ff0040
+#define USBINITVAL2 0x00000001
+
+#define USBPCTL1 0xffe70804
+#define USBST 0xffe70808
+#define PHY_ENB 0x00000001
+#define PLL_ENB 0x00000002
+#define PHY_RST 0x00000004
+#define ACT_PLL_STATUS 0xc0000000
+static void __init sh7786_usb_setup(void)
+{
+ int i = 1000000;
+
+ /*
+ * USB initial settings
+ *
+ * The following settings are necessary
+ * for using the USB modules.
+ *
+ * see "USB Inital Settings" for detail
+ */
+ __raw_writel(USBINITVAL1, USBINITREG1);
+ __raw_writel(USBINITVAL2, USBINITREG2);
+
+ /*
+ * Set the PHY and PLL enable bit
+ */
+ __raw_writel(PHY_ENB | PLL_ENB, USBPCTL1);
+ while (i-- &&
+ ((__raw_readl(USBST) & ACT_PLL_STATUS) != ACT_PLL_STATUS))
+ cpu_relax();
+
+ if (i) {
+ /* Set the PHY RST bit */
+ __raw_writel(PHY_ENB | PLL_ENB | PHY_RST, USBPCTL1);
+ printk(KERN_INFO "sh7786 usb setup done\n");
+ }
+}
+
static int __init sh7786_devices_setup(void)
{
+ sh7786_usb_setup();
return platform_add_devices(sh7786_devices,
ARRAY_SIZE(sh7786_devices));
}
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 83babb0..c6c816b 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -47,6 +47,7 @@
default y if CPU_SUBTYPE_SH7720
default y if CPU_SUBTYPE_SH7721
default y if CPU_SUBTYPE_SH7763
+ default y if CPU_SUBTYPE_SH7786
# more:
default PCI
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 5cf5f1e..7658589 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1049,7 +1049,8 @@
#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
- defined(CONFIG_CPU_SUBTYPE_SH7763)
+ defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7786)
#include "ohci-sh.c"
#define PLATFORM_DRIVER ohci_hcd_sh_driver
#endif