iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[media] mt9v032: Use the common clock framework

Browse Source 
Configure the device external clock using the common clock framework
instead of a board code callback function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Laurent Pinchart 2013-07-05 07:16:02 -03:00 committed by Mauro Carvalho Chehab
parent 4ab0620bdc
commit 3300a8fd48
2 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/media/i2c/mt9v032.c
View File

@ -12,6 +12,7 @@
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/log2.h>
@ -135,6 +136,8 @@ struct mt9v032 {
struct mutex power_lock;
int power_count;
struct clk *clk;
struct mt9v032_platform_data *pdata;
u32 sysclk;
@ -219,10 +222,9 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
int ret;
if (mt9v032->pdata->set_clock) {
mt9v032->pdata->set_clock(&mt9v032->subdev, mt9v032->sysclk);
udelay(1);
}
clk_set_rate(mt9v032->clk, mt9v032->sysclk);
clk_prepare_enable(mt9v032->clk);
udelay(1);
/* Reset the chip and stop data read out */
ret = mt9v032_write(client, MT9V032_RESET, 1);
@ -238,8 +240,7 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
static void mt9v032_power_off(struct mt9v032 *mt9v032)
{
if (mt9v032->pdata->set_clock)
mt9v032->pdata->set_clock(&mt9v032->subdev, 0);
clk_disable_unprepare(mt9v032->clk);
}
static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
@ -748,6 +749,10 @@ static int mt9v032_probe(struct i2c_client *client,
if (!mt9v032)
return -ENOMEM;
mt9v032->clk = devm_clk_get(&client->dev, NULL);
if (IS_ERR(mt9v032->clk))
return PTR_ERR(mt9v032->clk);
mutex_init(&mt9v032->power_lock);
mt9v032->pdata = pdata;

4
include/media/mt9v032.h
View File

@ -1,13 +1,9 @@
#ifndef _MEDIA_MT9V032_H
#define _MEDIA_MT9V032_H
struct v4l2_subdev;
struct mt9v032_platform_data {
unsigned int clk_pol:1;
void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate);
const s64 *link_freqs;
s64 link_def_freq;
};