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path: root/drivers/media/video/mt9m001.c
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Diffstat (limited to 'drivers/media/video/mt9m001.c')
-rw-r--r--drivers/media/video/mt9m001.c157
1 files changed, 68 insertions, 89 deletions
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 1e4f269fc08..2a73dac11d3 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -13,13 +13,13 @@
#include <linux/i2c.h>
#include <linux/log2.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
/* mt9m001 i2c address 0x5d
- * The platform has to define i2c_board_info
- * and call i2c_register_board_info() */
+ * The platform has to define ctruct i2c_board_info objects and link to them
+ * from struct soc_camera_link */
/* mt9m001 selected register addresses */
#define MT9M001_CHIP_VERSION 0x00
@@ -69,10 +69,16 @@ static const struct soc_camera_data_format mt9m001_monochrome_formats[] = {
};
struct mt9m001 {
+ struct v4l2_subdev subdev;
int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */
unsigned char autoexposure;
};
+static struct mt9m001 *to_mt9m001(const struct i2c_client *client)
+{
+ return container_of(i2c_get_clientdata(client), struct mt9m001, subdev);
+}
+
static int reg_read(struct i2c_client *client, const u8 reg)
{
s32 data = i2c_smbus_read_word_data(client, reg);
@@ -110,32 +116,18 @@ static int reg_clear(struct i2c_client *client, const u8 reg,
static int mt9m001_init(struct soc_camera_device *icd)
{
struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
- struct soc_camera_link *icl = to_soc_camera_link(icd);
int ret;
dev_dbg(&icd->dev, "%s\n", __func__);
- if (icl->power) {
- ret = icl->power(&client->dev, 1);
- if (ret < 0) {
- dev_err(icd->vdev->parent,
- "Platform failed to power-on the camera.\n");
- return ret;
- }
- }
-
- /* The camera could have been already on, we reset it additionally */
- if (icl->reset)
- ret = icl->reset(&client->dev);
- else
- ret = -ENODEV;
+ /*
+ * We don't know, whether platform provides reset,
+ * issue a soft reset too
+ */
+ ret = reg_write(client, MT9M001_RESET, 1);
+ if (!ret)
+ ret = reg_write(client, MT9M001_RESET, 0);
- if (ret < 0) {
- /* Either no platform reset, or platform reset failed */
- ret = reg_write(client, MT9M001_RESET, 1);
- if (!ret)
- ret = reg_write(client, MT9M001_RESET, 0);
- }
/* Disable chip, synchronous option update */
if (!ret)
ret = reg_write(client, MT9M001_OUTPUT_CONTROL, 0);
@@ -146,33 +138,19 @@ static int mt9m001_init(struct soc_camera_device *icd)
static int mt9m001_release(struct soc_camera_device *icd)
{
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_write(client, MT9M001_OUTPUT_CONTROL, 0);
- if (icl->power)
- icl->power(&client->dev, 0);
-
return 0;
}
-static int mt9m001_start_capture(struct soc_camera_device *icd)
+static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct i2c_client *client = sd->priv;
- /* Switch to master "normal" mode */
- if (reg_write(client, MT9M001_OUTPUT_CONTROL, 2) < 0)
- return -EIO;
- return 0;
-}
-
-static int mt9m001_stop_capture(struct soc_camera_device *icd)
-{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
-
- /* Stop sensor readout */
- if (reg_write(client, MT9M001_OUTPUT_CONTROL, 0) < 0)
+ /* Switch to master "normal" mode or stop sensor readout */
+ if (reg_write(client, MT9M001_OUTPUT_CONTROL, enable ? 2 : 0) < 0)
return -EIO;
return 0;
}
@@ -220,7 +198,7 @@ static int mt9m001_set_crop(struct soc_camera_device *icd,
struct v4l2_rect *rect)
{
struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
int ret;
const u16 hblank = 9, vblank = 25;
@@ -257,9 +235,10 @@ static int mt9m001_set_crop(struct soc_camera_device *icd,
return ret;
}
-static int mt9m001_set_fmt(struct soc_camera_device *icd,
- struct v4l2_format *f)
+static int mt9m001_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
+ struct i2c_client *client = sd->priv;
+ struct soc_camera_device *icd = client->dev.platform_data;
struct v4l2_rect rect = {
.left = icd->x_current,
.top = icd->y_current,
@@ -271,9 +250,10 @@ static int mt9m001_set_fmt(struct soc_camera_device *icd,
return mt9m001_set_crop(icd, &rect);
}
-static int mt9m001_try_fmt(struct soc_camera_device *icd,
- struct v4l2_format *f)
+static int mt9m001_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
+ struct i2c_client *client = sd->priv;
+ struct soc_camera_device *icd = client->dev.platform_data;
struct v4l2_pix_format *pix = &f->fmt.pix;
v4l_bound_align_image(&pix->width, 48, 1280, 1,
@@ -283,11 +263,11 @@ static int mt9m001_try_fmt(struct soc_camera_device *icd,
return 0;
}
-static int mt9m001_get_chip_id(struct soc_camera_device *icd,
- struct v4l2_dbg_chip_ident *id)
+static int mt9m001_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *id)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
@@ -302,10 +282,10 @@ static int mt9m001_get_chip_id(struct soc_camera_device *icd,
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9m001_get_register(struct soc_camera_device *icd,
- struct v4l2_dbg_register *reg)
+static int mt9m001_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
@@ -322,10 +302,10 @@ static int mt9m001_get_register(struct soc_camera_device *icd,
return 0;
}
-static int mt9m001_set_register(struct soc_camera_device *icd,
- struct v4l2_dbg_register *reg)
+static int mt9m001_s_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
@@ -378,35 +358,20 @@ static const struct v4l2_queryctrl mt9m001_controls[] = {
}
};
-static int mt9m001_get_control(struct soc_camera_device *, struct v4l2_control *);
-static int mt9m001_set_control(struct soc_camera_device *, struct v4l2_control *);
-
static struct soc_camera_ops mt9m001_ops = {
- .owner = THIS_MODULE,
.init = mt9m001_init,
.release = mt9m001_release,
- .start_capture = mt9m001_start_capture,
- .stop_capture = mt9m001_stop_capture,
.set_crop = mt9m001_set_crop,
- .set_fmt = mt9m001_set_fmt,
- .try_fmt = mt9m001_try_fmt,
.set_bus_param = mt9m001_set_bus_param,
.query_bus_param = mt9m001_query_bus_param,
.controls = mt9m001_controls,
.num_controls = ARRAY_SIZE(mt9m001_controls),
- .get_control = mt9m001_get_control,
- .set_control = mt9m001_set_control,
- .get_chip_id = mt9m001_get_chip_id,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .get_register = mt9m001_get_register,
- .set_register = mt9m001_set_register,
-#endif
};
-static int mt9m001_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9m001_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
int data;
switch (ctrl->id) {
@@ -423,10 +388,11 @@ static int mt9m001_get_control(struct soc_camera_device *icd, struct v4l2_contro
return 0;
}
-static int mt9m001_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9m001_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
const struct v4l2_queryctrl *qctrl;
int data;
@@ -521,10 +487,9 @@ static int mt9m001_set_control(struct soc_camera_device *icd, struct v4l2_contro
static int mt9m001_video_probe(struct soc_camera_device *icd,
struct i2c_client *client)
{
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
struct soc_camera_link *icl = to_soc_camera_link(icd);
s32 data;
- int ret;
unsigned long flags;
/* We must have a parent by now. And it cannot be a wrong one.
@@ -533,11 +498,6 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
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, MT9M001_CHIP_ENABLE, 1);
dev_dbg(&icd->dev, "write: %d\n", data);
@@ -545,8 +505,6 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
/* Read out the chip version register */
data = reg_read(client, MT9M001_CHIP_VERSION);
- soc_camera_video_stop(icd);
-
/* must be 0x8411 or 0x8421 for colour sensor and 8431 for bw */
switch (data) {
case 0x8411:
@@ -601,6 +559,27 @@ static void mt9m001_video_remove(struct soc_camera_device *icd)
icl->free_bus(icl);
}
+static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
+ .g_ctrl = mt9m001_g_ctrl,
+ .s_ctrl = mt9m001_s_ctrl,
+ .g_chip_ident = mt9m001_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = mt9m001_g_register,
+ .s_register = mt9m001_s_register,
+#endif
+};
+
+static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
+ .s_stream = mt9m001_s_stream,
+ .s_fmt = mt9m001_s_fmt,
+ .try_fmt = mt9m001_try_fmt,
+};
+
+static struct v4l2_subdev_ops mt9m001_subdev_ops = {
+ .core = &mt9m001_subdev_core_ops,
+ .video = &mt9m001_subdev_video_ops,
+};
+
static int mt9m001_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
@@ -631,7 +610,7 @@ static int mt9m001_probe(struct i2c_client *client,
if (!mt9m001)
return -ENOMEM;
- i2c_set_clientdata(client, mt9m001);
+ v4l2_i2c_subdev_init(&mt9m001->subdev, client, &mt9m001_subdev_ops);
/* Second stage probe - when a capture adapter is there */
icd->ops = &mt9m001_ops;
@@ -660,7 +639,7 @@ static int mt9m001_probe(struct i2c_client *client,
static int mt9m001_remove(struct i2c_client *client)
{
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
struct soc_camera_device *icd = client->dev.platform_data;
icd->ops = NULL;