V4L/DVB (12506): soc-camera: convert to platform device
Convert soc-camera core and all drivers to platform device API. We already
converted platforms to register a platform device for each soc-camera client,
now we remove the compatibility code and switch completely to the new scheme.
This is a preparatory step for the v4l2-subdev conversion.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 4207fb34..d9c7c2f 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -68,8 +68,6 @@
};
struct mt9t031 {
- struct i2c_client *client;
- struct soc_camera_device icd;
int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */
unsigned char autoexposure;
u16 xskip;
@@ -138,8 +136,8 @@
static int mt9t031_init(struct soc_camera_device *icd)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct soc_camera_link *icl = client->dev.platform_data;
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
int ret;
if (icl->power) {
@@ -166,8 +164,8 @@
static int mt9t031_release(struct soc_camera_device *icd)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct soc_camera_link *icl = client->dev.platform_data;
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
/* Disable the chip */
reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
@@ -180,7 +178,7 @@
static int mt9t031_start_capture(struct soc_camera_device *icd)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
/* Switch to master "normal" mode */
if (reg_set(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
@@ -190,7 +188,7 @@
static int mt9t031_stop_capture(struct soc_camera_device *icd)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
/* Stop sensor readout */
if (reg_clear(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
@@ -201,7 +199,7 @@
static int mt9t031_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
/* The caller should have queried our parameters, check anyway */
if (flags & ~MT9T031_BUS_PARAM)
@@ -217,8 +215,7 @@
static unsigned long mt9t031_query_bus_param(struct soc_camera_device *icd)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
- struct soc_camera_link *icl = mt9t031->client->dev.platform_data;
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM);
}
@@ -238,8 +235,8 @@
static int mt9t031_set_params(struct soc_camera_device *icd,
struct v4l2_rect *rect, u16 xskip, u16 yskip)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
int ret;
u16 xbin, ybin, width, height, left, top;
const u16 hblank = MT9T031_HORIZONTAL_BLANK,
@@ -336,7 +333,8 @@
static int mt9t031_set_crop(struct soc_camera_device *icd,
struct v4l2_rect *rect)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
/* CROP - no change in scaling, or in limits */
return mt9t031_set_params(icd, rect, mt9t031->xskip, mt9t031->yskip);
@@ -345,7 +343,8 @@
static int mt9t031_set_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
int ret;
u16 xskip, yskip;
struct v4l2_rect rect = {
@@ -395,12 +394,13 @@
static int mt9t031_get_chip_id(struct soc_camera_device *icd,
struct v4l2_dbg_chip_ident *id)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
- if (id->match.addr != mt9t031->client->addr)
+ if (id->match.addr != client->addr)
return -ENODEV;
id->ident = mt9t031->model;
@@ -413,7 +413,7 @@
static int mt9t031_get_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
@@ -432,7 +432,7 @@
static int mt9t031_set_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
@@ -493,15 +493,11 @@
}
};
-static int mt9t031_video_probe(struct soc_camera_device *);
-static void mt9t031_video_remove(struct soc_camera_device *);
static int mt9t031_get_control(struct soc_camera_device *, struct v4l2_control *);
static int mt9t031_set_control(struct soc_camera_device *, struct v4l2_control *);
static struct soc_camera_ops mt9t031_ops = {
.owner = THIS_MODULE,
- .probe = mt9t031_video_probe,
- .remove = mt9t031_video_remove,
.init = mt9t031_init,
.release = mt9t031_release,
.start_capture = mt9t031_start_capture,
@@ -524,8 +520,8 @@
static int mt9t031_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
int data;
switch (ctrl->id) {
@@ -550,8 +546,8 @@
static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
const struct v4l2_queryctrl *qctrl;
int data;
@@ -657,10 +653,10 @@
/* Interface active, can use i2c. If it fails, it can indeed mean, that
* this wasn't our capture interface, so, we wait for the right one */
-static int mt9t031_video_probe(struct soc_camera_device *icd)
+static int mt9t031_video_probe(struct soc_camera_device *icd,
+ struct i2c_client *client)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
s32 data;
int ret;
@@ -670,6 +666,11 @@
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
+ /* Switch master clock on */
+ ret = soc_camera_video_start(icd, &client->dev);
+ if (ret)
+ return ret;
+
/* Enable the chip */
data = reg_write(client, MT9T031_CHIP_ENABLE, 1);
dev_dbg(&icd->dev, "write: %d\n", data);
@@ -677,6 +678,8 @@
/* Read out the chip version register */
data = reg_read(client, MT9T031_CHIP_VERSION);
+ soc_camera_video_stop(icd);
+
switch (data) {
case 0x1621:
mt9t031->model = V4L2_IDENT_MT9T031;
@@ -684,44 +687,31 @@
icd->num_formats = ARRAY_SIZE(mt9t031_colour_formats);
break;
default:
- ret = -ENODEV;
dev_err(&icd->dev,
"No MT9T031 chip detected, register read %x\n", data);
- goto ei2c;
+ return -ENODEV;
}
dev_info(&icd->dev, "Detected a MT9T031 chip ID %x\n", data);
- /* Now that we know the model, we can start video */
- ret = soc_camera_video_start(icd);
- if (ret)
- goto evstart;
-
return 0;
-
-evstart:
-ei2c:
- return ret;
-}
-
-static void mt9t031_video_remove(struct soc_camera_device *icd)
-{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
-
- dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9t031->client->addr,
- icd->dev.parent, icd->vdev);
- soc_camera_video_stop(icd);
}
static int mt9t031_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9t031 *mt9t031;
- struct soc_camera_device *icd;
+ struct soc_camera_device *icd = client->dev.platform_data;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct soc_camera_link *icl = client->dev.platform_data;
+ struct soc_camera_link *icl;
int ret;
+ if (!icd) {
+ dev_err(&client->dev, "MT9T031: missing soc-camera data!\n");
+ return -EINVAL;
+ }
+
+ icl = to_soc_camera_link(icd);
if (!icl) {
dev_err(&client->dev, "MT9T031 driver needs platform data\n");
return -EINVAL;
@@ -737,13 +727,10 @@
if (!mt9t031)
return -ENOMEM;
- mt9t031->client = client;
i2c_set_clientdata(client, mt9t031);
/* Second stage probe - when a capture adapter is there */
- icd = &mt9t031->icd;
icd->ops = &mt9t031_ops;
- icd->control = &client->dev;
icd->x_min = MT9T031_COLUMN_SKIP;
icd->y_min = MT9T031_ROW_SKIP;
icd->x_current = icd->x_min;
@@ -753,7 +740,6 @@
icd->height_min = MT9T031_MIN_HEIGHT;
icd->height_max = MT9T031_MAX_HEIGHT;
icd->y_skip_top = 0;
- icd->iface = icl->bus_id;
/* Simulated autoexposure. If enabled, we calculate shutter width
* ourselves in the driver based on vertical blanking and frame width */
mt9t031->autoexposure = 1;
@@ -761,24 +747,24 @@
mt9t031->xskip = 1;
mt9t031->yskip = 1;
- ret = soc_camera_device_register(icd);
- if (ret)
- goto eisdr;
+ ret = mt9t031_video_probe(icd, client);
+ if (ret) {
+ icd->ops = NULL;
+ i2c_set_clientdata(client, NULL);
+ kfree(mt9t031);
+ }
- return 0;
-
-eisdr:
- i2c_set_clientdata(client, NULL);
- kfree(mt9t031);
return ret;
}
static int mt9t031_remove(struct i2c_client *client)
{
struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
- soc_camera_device_unregister(&mt9t031->icd);
+ icd->ops = NULL;
i2c_set_clientdata(client, NULL);
+ client->driver = NULL;
kfree(mt9t031);
return 0;
