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[media] soc-camera: switch I2C subdevice drivers to use v4l2-clk 

Instead of centrally enabling and disabling subdevice master clocks in
soc-camera core, let subdevice drivers do that themselves, using the
V4L2 clock API and soc-camera convenience wrappers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski 2012-12-21 13:01:55 -03:00 committed by Mauro Carvalho Chehab
parent e9e310491b
commit 9aea470b39
18 changed files with 362 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/media/i2c/soc_camera/imx074.c
View File

@ -18,6 +18,7 @@
#include <linux/module.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
/* IMX074 registers */
@ -76,6 +77,7 @@ struct imx074_datafmt {
struct imx074 {
struct v4l2_subdev subdev;
const struct imx074_datafmt *fmt;
struct v4l2_clk *clk;
};
static const struct imx074_datafmt imx074_colour_fmts[] = {
@ -254,8 +256,9 @@ static int imx074_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct imx074 *priv = to_imx074(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
static int imx074_g_mbus_config(struct v4l2_subdev *sd,
@ -412,6 +415,7 @@ static int imx074_probe(struct i2c_client *client,
struct imx074 *priv;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
int ret;
if (!ssdd) {
dev_err(&client->dev, "IMX074: missing platform data!\n");
@ -432,13 +436,23 @@ static int imx074_probe(struct i2c_client *client,
priv->fmt = &imx074_colour_fmts[0];
return imx074_video_probe(client);
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
ret = imx074_video_probe(client);
if (ret < 0)
v4l2_clk_put(priv->clk);
return ret;
}
static int imx074_remove(struct i2c_client *client)
{
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct imx074 *priv = to_imx074(client);
v4l2_clk_put(priv->clk);
if (ssdd->free_bus)
ssdd->free_bus(ssdd);

17
drivers/media/i2c/soc_camera/mt9m001.c
View File

@ -16,6 +16,7 @@
#include <media/soc_camera.h>
#include <media/soc_mediabus.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-ctrls.h>
@ -93,6 +94,7 @@ struct mt9m001 {
struct v4l2_ctrl *exposure;
};
struct v4l2_rect rect; /* Sensor window */
struct v4l2_clk *clk;
const struct mt9m001_datafmt *fmt;
const struct mt9m001_datafmt *fmts;
int num_fmts;
@ -355,8 +357,9 @@ static int mt9m001_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct mt9m001 *mt9m001 = to_mt9m001(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, mt9m001->clk, on);
}
static int mt9m001_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
@ -681,9 +684,18 @@ static int mt9m001_probe(struct i2c_client *client,
mt9m001->rect.width = MT9M001_MAX_WIDTH;
mt9m001->rect.height = MT9M001_MAX_HEIGHT;
mt9m001->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(mt9m001->clk)) {
ret = PTR_ERR(mt9m001->clk);
goto eclkget;
}
ret = mt9m001_video_probe(ssdd, client);
if (ret)
if (ret) {
v4l2_clk_put(mt9m001->clk);
eclkget:
v4l2_ctrl_handler_free(&mt9m001->hdl);
}
return ret;
}
@ -693,6 +705,7 @@ static int mt9m001_remove(struct i2c_client *client)
struct mt9m001 *mt9m001 = to_mt9m001(client);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
v4l2_clk_put(mt9m001->clk);
v4l2_device_unregister_subdev(&mt9m001->subdev);
v4l2_ctrl_handler_free(&mt9m001->hdl);
mt9m001_video_remove(ssdd);

20
drivers/media/i2c/soc_camera/mt9m111.c
View File

@ -17,6 +17,7 @@
#include <linux/module.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
@ -206,6 +207,7 @@ struct mt9m111 {
struct v4l2_ctrl *gain;
struct mt9m111_context *ctx;
struct v4l2_rect rect; /* cropping rectangle */
struct v4l2_clk *clk;
int width; /* output */
int height; /* sizes */
struct mutex power_lock; /* lock to protect power_count */
@ -775,14 +777,14 @@ static int mt9m111_power_on(struct mt9m111 *mt9m111)
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
int ret;
ret = soc_camera_power_on(&client->dev, ssdd);
ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk);
if (ret < 0)
return ret;
ret = mt9m111_resume(mt9m111);
if (ret < 0) {
dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
soc_camera_power_off(&client->dev, ssdd);
soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
}
return ret;
@ -794,7 +796,7 @@ static void mt9m111_power_off(struct mt9m111 *mt9m111)
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
mt9m111_suspend(mt9m111);
soc_camera_power_off(&client->dev, ssdd);
soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
}
static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
@ -973,9 +975,18 @@ static int mt9m111_probe(struct i2c_client *client,
mt9m111->lastpage = -1;
mutex_init(&mt9m111->power_lock);
mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(mt9m111->clk)) {
ret = PTR_ERR(mt9m111->clk);
goto eclkget;
}
ret = mt9m111_video_probe(client);
if (ret)
if (ret) {
v4l2_clk_put(mt9m111->clk);
eclkget:
v4l2_ctrl_handler_free(&mt9m111->hdl);
}
return ret;
}
@ -984,6 +995,7 @@ static int mt9m111_remove(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
v4l2_clk_put(mt9m111->clk);
v4l2_device_unregister_subdev(&mt9m111->subdev);
v4l2_ctrl_handler_free(&mt9m111->hdl);

19
drivers/media/i2c/soc_camera/mt9t031.c
View File

@ -18,6 +18,7 @@
#include <linux/module.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-ctrls.h>
@ -75,6 +76,7 @@ struct mt9t031 {
struct v4l2_ctrl *exposure;
};
struct v4l2_rect rect; /* Sensor window */
struct v4l2_clk *clk;
u16 xskip;
u16 yskip;
unsigned int total_h;
@ -585,16 +587,17 @@ static int mt9t031_s_power(struct v4l2_subdev *sd, int on)
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct video_device *vdev = soc_camera_i2c_to_vdev(client);
struct mt9t031 *mt9t031 = to_mt9t031(client);
int ret;
if (on) {
ret = soc_camera_power_on(&client->dev, ssdd);
ret = soc_camera_power_on(&client->dev, ssdd, mt9t031->clk);
if (ret < 0)
return ret;
vdev->dev.type = &mt9t031_dev_type;
} else {
vdev->dev.type = NULL;
soc_camera_power_off(&client->dev, ssdd);
soc_camera_power_off(&client->dev, ssdd, mt9t031->clk);
}
return 0;
@ -785,9 +788,18 @@ static int mt9t031_probe(struct i2c_client *client,
mt9t031->xskip = 1;
mt9t031->yskip = 1;
mt9t031->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(mt9t031->clk)) {
ret = PTR_ERR(mt9t031->clk);
goto eclkget;
}
ret = mt9t031_video_probe(client);
if (ret)
if (ret) {
v4l2_clk_put(mt9t031->clk);
eclkget:
v4l2_ctrl_handler_free(&mt9t031->hdl);
}
return ret;
}
@ -796,6 +808,7 @@ static int mt9t031_remove(struct i2c_client *client)
{
struct mt9t031 *mt9t031 = to_mt9t031(client);
v4l2_clk_put(mt9t031->clk);
v4l2_device_unregister_subdev(&mt9t031->subdev);
v4l2_ctrl_handler_free(&mt9t031->hdl);

25
drivers/media/i2c/soc_camera/mt9t112.c
View File

@ -27,6 +27,7 @@
#include <media/mt9t112.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
/* you can check PLL/clock info */
@ -89,6 +90,7 @@ struct mt9t112_priv {
struct mt9t112_camera_info *info;
struct i2c_client *client;
struct v4l2_rect frame;
struct v4l2_clk *clk;
const struct mt9t112_format *format;
int num_formats;
u32 flags;
@ -768,8 +770,9 @@ static int mt9t112_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct mt9t112_priv *priv = to_mt9t112(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
static struct v4l2_subdev_core_ops mt9t112_subdev_core_ops = {
@ -1092,16 +1095,29 @@ static int mt9t112_probe(struct i2c_client *client,
v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops);
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
ret = mt9t112_camera_probe(client);
if (ret)
return ret;
/* Cannot fail: using the default supported pixel code */
mt9t112_set_params(priv, &rect, V4L2_MBUS_FMT_UYVY8_2X8);
if (!ret)
mt9t112_set_params(priv, &rect, V4L2_MBUS_FMT_UYVY8_2X8);
else
v4l2_clk_put(priv->clk);
return ret;
}
static int mt9t112_remove(struct i2c_client *client)
{
struct mt9t112_priv *priv = to_mt9t112(client);
v4l2_clk_put(priv->clk);
return 0;
}
static const struct i2c_device_id mt9t112_id[] = {
{ "mt9t112", 0 },
{ }
@ -1113,6 +1129,7 @@ static struct i2c_driver mt9t112_i2c_driver = {
.name = "mt9t112",
},
.probe = mt9t112_probe,
.remove = mt9t112_remove,
.id_table = mt9t112_id,
};

17
drivers/media/i2c/soc_camera/mt9v022.c
View File

@ -19,6 +19,7 @@
#include <media/soc_camera.h>
#include <media/soc_mediabus.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-ctrls.h>
/*
@ -153,6 +154,7 @@ struct mt9v022 {
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_rect rect; /* Sensor window */
struct v4l2_clk *clk;
const struct mt9v022_datafmt *fmt;
const struct mt9v022_datafmt *fmts;
const struct mt9v02x_register *reg;
@ -498,8 +500,9 @@ static int mt9v022_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct mt9v022 *mt9v022 = to_mt9v022(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, mt9v022->clk, on);
}
static int mt9v022_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
@ -936,9 +939,18 @@ static int mt9v022_probe(struct i2c_client *client,
mt9v022->rect.width = MT9V022_MAX_WIDTH;
mt9v022->rect.height = MT9V022_MAX_HEIGHT;
mt9v022->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(mt9v022->clk)) {
ret = PTR_ERR(mt9v022->clk);
goto eclkget;
}
ret = mt9v022_video_probe(client);
if (ret)
if (ret) {
v4l2_clk_put(mt9v022->clk);
eclkget:
v4l2_ctrl_handler_free(&mt9v022->hdl);
}
return ret;
}
@ -948,6 +960,7 @@ static int mt9v022_remove(struct i2c_client *client)
struct mt9v022 *mt9v022 = to_mt9v022(client);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
v4l2_clk_put(mt9v022->clk);
v4l2_device_unregister_subdev(&mt9v022->subdev);
if (ssdd->free_bus)
ssdd->free_bus(ssdd);

19
drivers/media/i2c/soc_camera/ov2640.c
View File

@ -22,6 +22,7 @@
#include <linux/videodev2.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-ctrls.h>
@ -302,6 +303,7 @@ struct ov2640_priv {
struct v4l2_subdev subdev;
struct v4l2_ctrl_handler hdl;
enum v4l2_mbus_pixelcode cfmt_code;
struct v4l2_clk *clk;
const struct ov2640_win_size *win;
};
@ -758,8 +760,9 @@ static int ov2640_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov2640_priv *priv = to_ov2640(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
/* Select the nearest higher resolution for capture */
@ -1097,11 +1100,20 @@ static int ov2640_probe(struct i2c_client *client,
if (priv->hdl.error)
return priv->hdl.error;
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto eclkget;
}
ret = ov2640_video_probe(client);
if (ret)
if (ret) {
v4l2_clk_put(priv->clk);
eclkget:
v4l2_ctrl_handler_free(&priv->hdl);
else
} else {
dev_info(&adapter->dev, "OV2640 Probed\n");
}
return ret;
}
@ -1110,6 +1122,7 @@ static int ov2640_remove(struct i2c_client *client)
{
struct ov2640_priv *priv = to_ov2640(client);
v4l2_clk_put(priv->clk);
v4l2_device_unregister_subdev(&priv->subdev);
v4l2_ctrl_handler_free(&priv->hdl);
return 0;

20
drivers/media/i2c/soc_camera/ov5642.c
View File

@ -24,6 +24,7 @@
#include <linux/v4l2-mediabus.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
/* OV5642 registers */
@ -609,6 +610,7 @@ struct ov5642 {
struct v4l2_subdev subdev;
const struct ov5642_datafmt *fmt;
struct v4l2_rect crop_rect;
struct v4l2_clk *clk;
/* blanking information */
int total_width;
@ -917,12 +919,13 @@ static int ov5642_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov5642 *priv = to_ov5642(client);
int ret;
if (!on)
return soc_camera_power_off(&client->dev, ssdd);
return soc_camera_power_off(&client->dev, ssdd, priv->clk);
ret = soc_camera_power_on(&client->dev, ssdd);
ret = soc_camera_power_on(&client->dev, ssdd, priv->clk);
if (ret < 0)
return ret;
@ -1002,6 +1005,7 @@ static int ov5642_probe(struct i2c_client *client,
{
struct ov5642 *priv;
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
int ret;
if (!ssdd) {
dev_err(&client->dev, "OV5642: missing platform data!\n");
@ -1023,13 +1027,23 @@ static int ov5642_probe(struct i2c_client *client,
priv->total_width = OV5642_DEFAULT_WIDTH + BLANKING_EXTRA_WIDTH;
priv->total_height = BLANKING_MIN_HEIGHT;
return ov5642_video_probe(client);
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
ret = ov5642_video_probe(client);
if (ret < 0)
v4l2_clk_put(priv->clk);
return ret;
}
static int ov5642_remove(struct i2c_client *client)
{
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov5642 *priv = to_ov5642(client);
v4l2_clk_put(priv->clk);
if (ssdd->free_bus)
ssdd->free_bus(ssdd);

17
drivers/media/i2c/soc_camera/ov6650.c
View File

@ -32,6 +32,7 @@
#include <linux/module.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-ctrls.h>
/* Register definitions */
@ -195,6 +196,7 @@ struct ov6650 {
struct v4l2_ctrl *blue;
struct v4l2_ctrl *red;
};
struct v4l2_clk *clk;
bool half_scale; /* scale down output by 2 */
struct v4l2_rect rect; /* sensor cropping window */
unsigned long pclk_limit; /* from host */
@ -425,8 +427,9 @@ static int ov6650_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov6650 *priv = to_ov6650(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
static int ov6650_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
@ -1013,9 +1016,18 @@ static int ov6650_probe(struct i2c_client *client,
priv->code = V4L2_MBUS_FMT_YUYV8_2X8;
priv->colorspace = V4L2_COLORSPACE_JPEG;
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto eclkget;
}
ret = ov6650_video_probe(client);
if (ret)
if (ret) {
v4l2_clk_put(priv->clk);
eclkget:
v4l2_ctrl_handler_free(&priv->hdl);
}
return ret;
}
@ -1024,6 +1036,7 @@ static int ov6650_remove(struct i2c_client *client)
{
struct ov6650 *priv = to_ov6650(client);
v4l2_clk_put(priv->clk);
v4l2_device_unregister_subdev(&priv->subdev);
v4l2_ctrl_handler_free(&priv->hdl);
return 0;

15
drivers/media/i2c/soc_camera/ov772x.c
View File

@ -26,6 +26,7 @@
#include <media/ov772x.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
@ -395,6 +396,7 @@ struct ov772x_win_size {
struct ov772x_priv {
struct v4l2_subdev subdev;
struct v4l2_ctrl_handler hdl;
struct v4l2_clk *clk;
struct ov772x_camera_info *info;
const struct ov772x_color_format *cfmt;
const struct ov772x_win_size *win;
@ -655,8 +657,9 @@ static int ov772x_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov772x_priv *priv = to_ov772x(sd);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
static const struct ov772x_win_size *ov772x_select_win(u32 width, u32 height)
@ -1072,13 +1075,22 @@ static int ov772x_probe(struct i2c_client *client,
if (priv->hdl.error)
return priv->hdl.error;
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto eclkget;
}
ret = ov772x_video_probe(priv);
if (ret < 0) {
v4l2_clk_put(priv->clk);
eclkget:
v4l2_ctrl_handler_free(&priv->hdl);
} else {
priv->cfmt = &ov772x_cfmts[0];
priv->win = &ov772x_win_sizes[0];
}
return ret;
}
@ -1086,6 +1098,7 @@ static int ov772x_remove(struct i2c_client *client)
{
struct ov772x_priv *priv = to_ov772x(i2c_get_clientdata(client));
v4l2_clk_put(priv->clk);
v4l2_device_unregister_subdev(&priv->subdev);
v4l2_ctrl_handler_free(&priv->hdl);
return 0;

17
drivers/media/i2c/soc_camera/ov9640.c
View File

@ -28,6 +28,7 @@
#include <linux/videodev2.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
@ -324,8 +325,9 @@ static int ov9640_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct ov9640_priv *priv = to_ov9640_sensor(sd);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
/* select nearest higher resolution for capture */
@ -700,10 +702,18 @@ static int ov9640_probe(struct i2c_client *client,
if (priv->hdl.error)
return priv->hdl.error;
ret = ov9640_video_probe(client);
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto eclkget;
}
if (ret)
ret = ov9640_video_probe(client);
if (ret) {
v4l2_clk_put(priv->clk);
eclkget:
v4l2_ctrl_handler_free(&priv->hdl);
}
return ret;
}
@ -713,6 +723,7 @@ static int ov9640_remove(struct i2c_client *client)
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov9640_priv *priv = to_ov9640_sensor(sd);
v4l2_clk_put(priv->clk);
v4l2_device_unregister_subdev(&priv->subdev);
v4l2_ctrl_handler_free(&priv->hdl);
return 0;

1
drivers/media/i2c/soc_camera/ov9640.h
View File

@ -199,6 +199,7 @@ struct ov9640_reg {
struct ov9640_priv {
struct v4l2_subdev subdev;
struct v4l2_ctrl_handler hdl;
struct v4l2_clk *clk;
int model;
int revision;

18
drivers/media/i2c/soc_camera/ov9740.c
View File

@ -17,6 +17,7 @@
#include <linux/v4l2-mediabus.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-ctrls.h>
#define to_ov9740(sd) container_of(sd, struct ov9740_priv, subdev)
@ -195,6 +196,7 @@ struct ov9740_reg {
struct ov9740_priv {
struct v4l2_subdev subdev;
struct v4l2_ctrl_handler hdl;
struct v4l2_clk *clk;
u16 model;
u8 revision;
@ -778,7 +780,7 @@ static int ov9740_s_power(struct v4l2_subdev *sd, int on)
int ret;
if (on) {
ret = soc_camera_power_on(&client->dev, ssdd);
ret = soc_camera_power_on(&client->dev, ssdd, priv->clk);
if (ret < 0)
return ret;
@ -792,7 +794,7 @@ static int ov9740_s_power(struct v4l2_subdev *sd, int on)
priv->current_enable = true;
}
soc_camera_power_off(&client->dev, ssdd);
soc_camera_power_off(&client->dev, ssdd, priv->clk);
}
return 0;
@ -958,9 +960,18 @@ static int ov9740_probe(struct i2c_client *client,
if (priv->hdl.error)
return priv->hdl.error;
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto eclkget;
}
ret = ov9740_video_probe(client);
if (ret < 0)
if (ret < 0) {
v4l2_clk_put(priv->clk);
eclkget:
v4l2_ctrl_handler_free(&priv->hdl);
}
return ret;
}
@ -969,6 +980,7 @@ static int ov9740_remove(struct i2c_client *client)
{
struct ov9740_priv *priv = i2c_get_clientdata(client);
v4l2_clk_put(priv->clk);
v4l2_device_unregister_subdev(&priv->subdev);
v4l2_ctrl_handler_free(&priv->hdl);
return 0;

17
drivers/media/i2c/soc_camera/rj54n1cb0c.c
View File

@ -17,6 +17,7 @@
#include <media/rj54n1cb0c.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-ctrls.h>
@ -150,6 +151,7 @@ struct rj54n1_clock_div {
struct rj54n1 {
struct v4l2_subdev subdev;
struct v4l2_ctrl_handler hdl;
struct v4l2_clk *clk;
struct rj54n1_clock_div clk_div;
const struct rj54n1_datafmt *fmt;
struct v4l2_rect rect; /* Sensor window */
@ -1158,8 +1160,9 @@ static int rj54n1_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct rj54n1 *rj54n1 = to_rj54n1(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, rj54n1->clk, on);
}
static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl)
@ -1355,9 +1358,18 @@ static int rj54n1_probe(struct i2c_client *client,
rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
(clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
rj54n1->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(rj54n1->clk)) {
ret = PTR_ERR(rj54n1->clk);
goto eclkget;
}
ret = rj54n1_video_probe(client, rj54n1_priv);
if (ret < 0)
if (ret < 0) {
v4l2_clk_put(rj54n1->clk);
eclkget:
v4l2_ctrl_handler_free(&rj54n1->hdl);
}
return ret;
}
@ -1367,6 +1379,7 @@ static int rj54n1_remove(struct i2c_client *client)
struct rj54n1 *rj54n1 = to_rj54n1(client);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
v4l2_clk_put(rj54n1->clk);
v4l2_device_unregister_subdev(&rj54n1->subdev);
if (ssdd->free_bus)
ssdd->free_bus(ssdd);

24
drivers/media/i2c/soc_camera/tw9910.c
View File

@ -27,6 +27,7 @@
#include <media/soc_camera.h>
#include <media/tw9910.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#define GET_ID(val) ((val & 0xF8) >> 3)
@ -227,6 +228,7 @@ struct tw9910_scale_ctrl {
struct tw9910_priv {
struct v4l2_subdev subdev;
struct v4l2_clk *clk;
struct tw9910_video_info *info;
const struct tw9910_scale_ctrl *scale;
v4l2_std_id norm;
@ -558,8 +560,9 @@ static int tw9910_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct tw9910_priv *priv = to_tw9910(client);
return soc_camera_set_power(&client->dev, ssdd, on);
return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}
static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height)
@ -899,6 +902,7 @@ static int tw9910_probe(struct i2c_client *client,
struct i2c_adapter *adapter =
to_i2c_adapter(client->dev.parent);
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
int ret;
if (!ssdd || !ssdd->drv_priv) {
dev_err(&client->dev, "TW9910: missing platform data!\n");
@ -922,7 +926,22 @@ static int tw9910_probe(struct i2c_client *client,
v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
return tw9910_video_probe(client);
priv->clk = v4l2_clk_get(&client->dev, "mclk");
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
ret = tw9910_video_probe(client);
if (ret < 0)
v4l2_clk_put(priv->clk);
return ret;
}
static int tw9910_remove(struct i2c_client *client)
{
struct tw9910_priv *priv = to_tw9910(client);
v4l2_clk_put(priv->clk);
return 0;
}
static const struct i2c_device_id tw9910_id[] = {
@ -936,6 +955,7 @@ static struct i2c_driver tw9910_i2c_driver = {
.name = "tw9910",
},
.probe = tw9910_probe,
.remove = tw9910_remove,
.id_table = tw9910_id,
};

162
drivers/media/platform/soc_camera/soc_camera.c
View File

@ -30,6 +30,7 @@
#include <linux/vmalloc.h>
#include <media/soc_camera.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-dev.h>
@ -50,13 +51,19 @@ static LIST_HEAD(hosts);
static LIST_HEAD(devices);
static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */
int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd)
int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd,
struct v4l2_clk *clk)
{
int ret = regulator_bulk_enable(ssdd->num_regulators,
int ret = clk ? v4l2_clk_enable(clk) : 0;
if (ret < 0) {
dev_err(dev, "Cannot enable clock\n");
return ret;
}
ret = regulator_bulk_enable(ssdd->num_regulators,
ssdd->regulators);
if (ret < 0) {
dev_err(dev, "Cannot enable regulators\n");
return ret;
goto eregenable;;
}
if (ssdd->power) {
@ -64,16 +71,25 @@ int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd)
if (ret < 0) {
dev_err(dev,
"Platform failed to power-on the camera.\n");
regulator_bulk_disable(ssdd->num_regulators,
ssdd->regulators);
goto epwron;
}
}
return 0;
epwron:
regulator_bulk_disable(ssdd->num_regulators,
ssdd->regulators);
eregenable:
if (clk)
v4l2_clk_disable(clk);
return ret;
}
EXPORT_SYMBOL(soc_camera_power_on);
int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd)
int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd,
struct v4l2_clk *clk)
{
int ret = 0;
int err;
@ -94,6 +110,9 @@ int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd
ret = ret ? : err;
}
if (clk)
v4l2_clk_disable(clk);
return ret;
}
EXPORT_SYMBOL(soc_camera_power_off);
@ -512,9 +531,11 @@ static int soc_camera_add_device(struct soc_camera_device *icd)
if (ici->icd)
return -EBUSY;
ret = ici->ops->clock_start(ici);
if (ret < 0)
return ret;
if (!icd->clk) {
ret = ici->ops->clock_start(ici);
if (ret < 0)
return ret;
}
if (ici->ops->add) {
ret = ici->ops->add(icd);
@ -527,7 +548,8 @@ static int soc_camera_add_device(struct soc_camera_device *icd)
return 0;
eadd:
ici->ops->clock_stop(ici);
if (!icd->clk)
ici->ops->clock_stop(ici);
return ret;
}
@ -540,7 +562,8 @@ static void soc_camera_remove_device(struct soc_camera_device *icd)
if (ici->ops->remove)
ici->ops->remove(icd);
ici->ops->clock_stop(ici);
if (!icd->clk)
ici->ops->clock_stop(ici);
ici->icd = NULL;
}
@ -1094,6 +1117,57 @@ static void scan_add_host(struct soc_camera_host *ici)
mutex_unlock(&list_lock);
}
/*
* It is invalid to call v4l2_clk_enable() after a successful probing
* asynchronously outside of V4L2 operations, i.e. with .host_lock not held.
*/
static int soc_camera_clk_enable(struct v4l2_clk *clk)
{
struct soc_camera_device *icd = clk->priv;
struct soc_camera_host *ici;
if (!icd || !icd->parent)
return -ENODEV;
ici = to_soc_camera_host(icd->parent);
if (!try_module_get(ici->ops->owner))
return -ENODEV;
/*
* If a different client is currently being probed, the host will tell
* you to go
*/
return ici->ops->clock_start(ici);
}
static void soc_camera_clk_disable(struct v4l2_clk *clk)
{
struct soc_camera_device *icd = clk->priv;
struct soc_camera_host *ici;
if (!icd || !icd->parent)
return;
ici = to_soc_camera_host(icd->parent);
ici->ops->clock_stop(ici);
module_put(ici->ops->owner);
}
/*
* Eventually, it would be more logical to make the respective host the clock
* owner, but then we would have to copy this struct for each ici. Besides, it
* would introduce the circular dependency problem, unless we port all client
* drivers to release the clock, when not in use.
*/
static const struct v4l2_clk_ops soc_camera_clk_ops = {
.owner = THIS_MODULE,
.enable = soc_camera_clk_enable,
.disable = soc_camera_clk_disable,
};
#ifdef CONFIG_I2C_BOARDINFO
static int soc_camera_init_i2c(struct soc_camera_device *icd,
struct soc_camera_desc *sdesc)
@ -1103,19 +1177,32 @@ static int soc_camera_init_i2c(struct soc_camera_device *icd,
struct soc_camera_host_desc *shd = &sdesc->host_desc;
struct i2c_adapter *adap = i2c_get_adapter(shd->i2c_adapter_id);
struct v4l2_subdev *subdev;
char clk_name[V4L2_SUBDEV_NAME_SIZE];
int ret;
if (!adap) {
dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n",
shd->i2c_adapter_id);
goto ei2cga;
return -ENODEV;
}
shd->board_info->platform_data = &sdesc->subdev_desc;
snprintf(clk_name, sizeof(clk_name), "%d-%04x",
shd->i2c_adapter_id, shd->board_info->addr);
icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
if (IS_ERR(icd->clk)) {
ret = PTR_ERR(icd->clk);
goto eclkreg;
}
subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap,
shd->board_info, NULL);
if (!subdev)
if (!subdev) {
ret = -ENODEV;
goto ei2cnd;
}
client = v4l2_get_subdevdata(subdev);
@ -1124,9 +1211,11 @@ static int soc_camera_init_i2c(struct soc_camera_device *icd,
return 0;
ei2cnd:
v4l2_clk_unregister(icd->clk);
icd->clk = NULL;
eclkreg:
i2c_put_adapter(adap);
ei2cga:
return -ENODEV;
return ret;
}
static void soc_camera_free_i2c(struct soc_camera_device *icd)
@ -1139,6 +1228,8 @@ static void soc_camera_free_i2c(struct soc_camera_device *icd)
v4l2_device_unregister_subdev(i2c_get_clientdata(client));
i2c_unregister_device(client);
i2c_put_adapter(adap);
v4l2_clk_unregister(icd->clk);
icd->clk = NULL;
}
#else
#define soc_camera_init_i2c(icd, sdesc) (-ENODEV)
@ -1176,26 +1267,31 @@ static int soc_camera_probe(struct soc_camera_device *icd)
if (ssdd->reset)
ssdd->reset(icd->pdev);
mutex_lock(&ici->host_lock);
ret = ici->ops->clock_start(ici);
mutex_unlock(&ici->host_lock);
if (ret < 0)
goto eadd;
/* Must have icd->vdev before registering the device */
ret = video_dev_create(icd);
if (ret < 0)
goto evdc;
/*
* ..._video_start() will create a device node, video_register_device()
* itself is protected against concurrent open() calls, but we also have
* to protect our data also during client probing.
*/
mutex_lock(&ici->host_lock);
/* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */
if (shd->board_info) {
ret = soc_camera_init_i2c(icd, sdesc);
if (ret < 0)
goto eadddev;
goto eadd;
} else if (!shd->add_device || !shd->del_device) {
ret = -EINVAL;
goto eadddev;
goto eadd;
} else {
ret = ici->ops->clock_start(ici);
if (ret < 0)
goto eadd;
if (shd->module_name)
ret = request_module(shd->module_name);
@ -1231,13 +1327,6 @@ static int soc_camera_probe(struct soc_camera_device *icd)
icd->field = V4L2_FIELD_ANY;
/*
* ..._video_start() will create a device node, video_register_device()
* itself is protected against concurrent open() calls, but we also have
* to protect our data.
*/
mutex_lock(&ici->host_lock);
ret = soc_camera_video_start(icd);
if (ret < 0)
goto evidstart;
@ -1250,14 +1339,14 @@ static int soc_camera_probe(struct soc_camera_device *icd)
icd->field = mf.field;
}
ici->ops->clock_stop(ici);
if (!shd->board_info)
ici->ops->clock_stop(ici);
mutex_unlock(&ici->host_lock);
return 0;
evidstart:
mutex_unlock(&ici->host_lock);
soc_camera_free_user_formats(icd);
eiufmt:
ectrl:
@ -1266,16 +1355,15 @@ ectrl:
} else {
shd->del_device(icd);
module_put(control->driver->owner);
}
enodrv:
eadddev:
ici->ops->clock_stop(ici);
}
eadd:
video_device_release(icd->vdev);
icd->vdev = NULL;
evdc:
mutex_lock(&ici->host_lock);
ici->ops->clock_stop(ici);
mutex_unlock(&ici->host_lock);
eadd:
evdc:
v4l2_ctrl_handler_free(&icd->ctrl_handler);
return ret;
}

2
drivers/media/platform/soc_camera/soc_camera_platform.c
View File

@ -54,7 +54,7 @@ static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on)
{
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, on);
return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on);
}
static struct v4l2_subdev_core_ops platform_subdev_core_ops = {

13
include/media/soc_camera.h
View File

@ -49,6 +49,7 @@ struct soc_camera_device {
/* soc_camera.c private count. Only accessed with .host_lock held */
int use_count;
struct file *streamer; /* stream owner */
struct v4l2_clk *clk;
union {
struct videobuf_queue vb_vidq;
struct vb2_queue vb2_vidq;
@ -325,14 +326,16 @@ static inline void soc_camera_limit_side(int *start, int *length,
unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd,
const struct v4l2_mbus_config *cfg);
int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd);
int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd);
int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd,
struct v4l2_clk *clk);
int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd,
struct v4l2_clk *clk);
static inline int soc_camera_set_power(struct device *dev,
struct soc_camera_subdev_desc *ssdd, bool on)
struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk, bool on)
{
return on ? soc_camera_power_on(dev, ssdd)
: soc_camera_power_off(dev, ssdd);
return on ? soc_camera_power_on(dev, ssdd, clk)
: soc_camera_power_off(dev, ssdd, clk);
}
/* This is only temporary here - until v4l2-subdev begins to link to video_device */