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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>
This commit is contained in:
Magnus Damm 2008-10-31 20:22:38 +09:00 committed by Paul Mundt
parent af5be79a7f
commit 765786e0ae
4 changed files with 40 additions and 5 deletions
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1
arch/sh/kernel/cpu/sh4a/setup-sh7366.c
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@ -185,7 +185,6 @@ static int __init sh7366_devices_setup(void)
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 */

1
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
View File

@ -240,7 +240,6 @@ static int __init sh7723_devices_setup(void)
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 */

35
drivers/usb/host/r8a66597-hcd.c
View File

@ -114,6 +114,9 @@ static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
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 @@ static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
{
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 @@ static int __init_or_module r8a66597_remove(struct platform_device *pdev)
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 @@ static int __init_or_module r8a66597_remove(struct platform_device *pdev)
#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 @@ static int __init r8a66597_probe(struct platform_device *pdev)
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 @@ static int __init r8a66597_probe(struct platform_device *pdev)
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);

8
drivers/usb/host/r8a66597.h
View File

@ -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_root_hub {
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];