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sh: sh_mobile ceu clock framework support

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Add clock framework support to the sh_mobile ceu and
adjust the board 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 20:21:44 +09:00 committed by Paul Mundt
parent 090d951b69
commit a42b6dd69c
3 changed files with 21 additions and 3 deletions
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2
arch/sh/boards/board-ap325rxa.c
View File

@ -303,6 +303,7 @@ static struct resource ceu_resources[] = {
static struct platform_device ceu_device = {
.name = "sh_mobile_ceu",
.id = 0, /* "ceu0" clock */
.num_resources = ARRAY_SIZE(ceu_resources),
.resource = ceu_resources,
.dev = {
@ -375,7 +376,6 @@ static int __init ap325rxa_devices_setup(void)
gpio_direction_output(GPIO_PTS3, 1);
/* CEU */
clk_always_enable("mstp203");
gpio_request(GPIO_FN_VIO_CLK2, NULL);
gpio_request(GPIO_FN_VIO_VD2, NULL);
gpio_request(GPIO_FN_VIO_HD2, NULL);

2
arch/sh/boards/mach-migor/setup.c
View File

@ -433,6 +433,7 @@ static struct resource migor_ceu_resources[] = {
static struct platform_device migor_ceu_device = {
.name = "sh_mobile_ceu",
.id = 0, /* "ceu0" clock */
.num_resources = ARRAY_SIZE(migor_ceu_resources),
.resource = migor_ceu_resources,
.dev = {
@ -554,7 +555,6 @@ static int __init migor_devices_setup(void)
#endif
/* CEU */
clk_always_enable("mstp203"); /* CEU */
gpio_request(GPIO_FN_VIO_CLK2, NULL);
gpio_request(GPIO_FN_VIO_VD2, NULL);
gpio_request(GPIO_FN_VIO_HD2, NULL);

20
drivers/media/video/sh_mobile_ceu_camera.c
View File

@ -31,6 +31,7 @@
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
@ -89,6 +90,7 @@ struct sh_mobile_ceu_dev {
unsigned int irq;
void __iomem *base;
struct clk *clk;
unsigned long video_limit;
/* lock used to protect videobuf */
@ -309,6 +311,8 @@ static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
if (ret)
goto err;
clk_enable(pcdev->clk);
ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
while (ceu_read(pcdev, CSTSR) & 1)
msleep(1);
@ -342,6 +346,8 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
}
spin_unlock_irqrestore(&pcdev->lock, flags);
clk_disable(pcdev->clk);
icd->ops->release(icd);
dev_info(&icd->dev,
@ -550,6 +556,7 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
struct sh_mobile_ceu_dev *pcdev;
struct resource *res;
void __iomem *base;
char clk_name[8];
unsigned int irq;
int err = 0;
@ -615,6 +622,14 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
goto exit_release_mem;
}
snprintf(clk_name, sizeof(clk_name), "ceu%d", pdev->id);
pcdev->clk = clk_get(&pdev->dev, clk_name);
if (IS_ERR(pcdev->clk)) {
dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
err = PTR_ERR(pcdev->clk);
goto exit_free_irq;
}
pcdev->ici.priv = pcdev;
pcdev->ici.dev.parent = &pdev->dev;
pcdev->ici.nr = pdev->id;
@ -623,10 +638,12 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
err = soc_camera_host_register(&pcdev->ici);
if (err)
goto exit_free_irq;
goto exit_free_clk;
return 0;
exit_free_clk:
clk_put(pcdev->clk);
exit_free_irq:
free_irq(pcdev->irq, pcdev);
exit_release_mem:
@ -645,6 +662,7 @@ static int sh_mobile_ceu_remove(struct platform_device *pdev)
struct sh_mobile_ceu_dev *pcdev = platform_get_drvdata(pdev);
soc_camera_host_unregister(&pcdev->ici);
clk_put(pcdev->clk);
free_irq(pcdev->irq, pcdev);
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
dma_release_declared_memory(&pdev->dev);