sh: sh_mobile usb clock framework support
Add clock framework support to the usb/r8a66597 driver and
adjust the cpu specific code accordingly.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7366.c b/arch/sh/kernel/cpu/sh4a/setup-sh7366.c
index 2f0905a..5f92c86 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7366.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7366.c
@@ -185,7 +185,6 @@
clk_always_enable("mstp023"); /* INTC3 */
clk_always_enable("mstp022"); /* INTC */
clk_always_enable("mstp020"); /* SuperHyway */
- clk_always_enable("mstp211"); /* USB */
clk_always_enable("mstp207"); /* VEU-2 */
clk_always_enable("mstp202"); /* VEU-1 */
clk_always_enable("mstp201"); /* VPU */
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
index 63ec348d..e9c9d7e 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
@@ -240,7 +240,6 @@
clk_always_enable("mstp020"); /* SuperHyway */
clk_always_enable("mstp000"); /* MERAM */
clk_always_enable("mstp108"); /* RTC */
- clk_always_enable("mstp211"); /* USB */
clk_always_enable("mstp206"); /* VEU2H1 */
clk_always_enable("mstp202"); /* VEU2H0 */
clk_always_enable("mstp201"); /* VPU */
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 2376f24..d99b9c7 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -114,6 +114,9 @@
int i = 0;
#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+#if defined(CONFIG_HAVE_CLK)
+ clk_enable(r8a66597->clk);
+#endif
do {
r8a66597_write(r8a66597, SCKE, SYSCFG0);
tmp = r8a66597_read(r8a66597, SYSCFG0);
@@ -154,7 +157,11 @@
{
r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
udelay(1);
-#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+#if defined(CONFIG_HAVE_CLK)
+ clk_disable(r8a66597->clk);
+#endif
+#else
r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
r8a66597_bclr(r8a66597, USBE, SYSCFG0);
@@ -2261,6 +2268,9 @@
del_timer_sync(&r8a66597->rh_timer);
usb_remove_hcd(hcd);
iounmap((void *)r8a66597->reg);
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+ clk_put(r8a66597->clk);
+#endif
usb_put_hcd(hcd);
return 0;
}
@@ -2268,6 +2278,9 @@
#define resource_len(r) (((r)->end - (r)->start) + 1)
static int __init r8a66597_probe(struct platform_device *pdev)
{
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+ char clk_name[8];
+#endif
struct resource *res = NULL, *ires;
int irq = -1;
void __iomem *reg = NULL;
@@ -2320,6 +2333,16 @@
memset(r8a66597, 0, sizeof(struct r8a66597));
dev_set_drvdata(&pdev->dev, r8a66597);
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+ snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
+ r8a66597->clk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(r8a66597->clk)) {
+ dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
+ ret = PTR_ERR(r8a66597->clk);
+ goto clean_up2;
+ }
+#endif
+
spin_lock_init(&r8a66597->lock);
init_timer(&r8a66597->rh_timer);
r8a66597->rh_timer.function = r8a66597_timer;
@@ -2365,11 +2388,19 @@
ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to add hcd\n");
- goto clean_up;
+ goto clean_up3;
}
return 0;
+clean_up3:
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+ clk_put(r8a66597->clk);
+#endif
+
+clean_up2:
+ usb_put_hcd(hcd);
+
clean_up:
if (reg)
iounmap(reg);
diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h
index 84ee014..ecacde4 100644
--- a/drivers/usb/host/r8a66597.h
+++ b/drivers/usb/host/r8a66597.h
@@ -26,6 +26,10 @@
#ifndef __R8A66597_H__
#define __R8A66597_H__
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+#include <linux/clk.h>
+#endif
+
#define SYSCFG0 0x00
#define SYSCFG1 0x02
#define SYSSTS0 0x04
@@ -481,7 +485,9 @@
struct r8a66597 {
spinlock_t lock;
unsigned long reg;
-
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
+ struct clk *clk;
+#endif
struct r8a66597_device device0;
struct r8a66597_root_hub root_hub[R8A66597_MAX_ROOT_HUB];
struct list_head pipe_queue[R8A66597_MAX_NUM_PIPE];