>From f5e98f3d85d675b48283580468224abcb58d4a79 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
Date: Tue, 25 Aug 2009 20:19:24 +0200
Subject: [PATCH] v4l: add new v4l2-subdev sensor operations, use skip_top_lines in soc-camera
Introduce new v4l2-subdev sensor operations, move .enum_framesizes() and
.enum_frameintervals() methods to it, add a new .skip_top_lines() method
and switch soc-camera to use it instead of .y_skip_top soc_camera_device
member, which can now be removed.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
Changes since v1: Add an explanation in the description of the
.skip_top_lines() field, fix implementations of this function to actually
return a value.
drivers/media/video/mt9m001.c | 30 ++++++++++++++++++++------
drivers/media/video/mt9m111.c | 1 -
drivers/media/video/mt9t031.c | 8 ++----
drivers/media/video/mt9v022.c | 32 ++++++++++++++++++++--------
drivers/media/video/pxa_camera.c | 9 ++++++-
drivers/media/video/soc_camera_platform.c | 1 -
include/media/soc_camera.h | 1 -
include/media/v4l2-subdev.h | 12 ++++++++++
8 files changed, 68 insertions(+), 26 deletions(-)
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 45388d2..b86e2ba 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -82,6 +82,7 @@ struct mt9m001 {
int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */
unsigned int gain;
unsigned int exposure;
+ unsigned short y_skip_top; /* Lines to skip at the top */
unsigned char autoexposure;
};
@@ -222,7 +223,7 @@ static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
soc_camera_limit_side(&rect.top, &rect.height,
MT9M001_ROW_SKIP, MT9M001_MIN_HEIGHT, MT9M001_MAX_HEIGHT);
- total_h = rect.height + icd->y_skip_top + vblank;
+ total_h = rect.height + mt9m001->y_skip_top + vblank;
/* Blanking and start values - default... */
ret = reg_write(client, MT9M001_HORIZONTAL_BLANKING, hblank);
@@ -239,7 +240,7 @@ static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect.width - 1);
if (!ret)
ret = reg_write(client, MT9M001_WINDOW_HEIGHT,
- rect.height + icd->y_skip_top - 1);
+ rect.height + mt9m001->y_skip_top - 1);
if (!ret && mt9m001->autoexposure) {
ret = reg_write(client, MT9M001_SHUTTER_WIDTH, total_h);
if (!ret) {
@@ -327,13 +328,13 @@ static int mt9m001_s_fmt(struct v4l2_subdev *sd, 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 mt9m001 *mt9m001 = to_mt9m001(client);
struct v4l2_pix_format *pix = &f->fmt.pix;
v4l_bound_align_image(&pix->width, MT9M001_MIN_WIDTH,
MT9M001_MAX_WIDTH, 1,
- &pix->height, MT9M001_MIN_HEIGHT + icd->y_skip_top,
- MT9M001_MAX_HEIGHT + icd->y_skip_top, 0, 0);
+ &pix->height, MT9M001_MIN_HEIGHT + mt9m001->y_skip_top,
+ MT9M001_MAX_HEIGHT + mt9m001->y_skip_top, 0, 0);
if (pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
pix->pixelformat == V4L2_PIX_FMT_SBGGR16)
@@ -552,7 +553,7 @@ static int mt9m001_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
if (ctrl->value) {
const u16 vblank = 25;
unsigned int total_h = mt9m001->rect.height +
- icd->y_skip_top + vblank;
+ mt9m001->y_skip_top + vblank;
if (reg_write(client, MT9M001_SHUTTER_WIDTH,
total_h) < 0)
return -EIO;
@@ -655,6 +656,16 @@ static void mt9m001_video_remove(struct soc_camera_device *icd)
icl->free_bus(icl);
}
+static int mt9m001_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ *lines = mt9m001->y_skip_top;
+
+ return 0;
+}
+
static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
.g_ctrl = mt9m001_g_ctrl,
.s_ctrl = mt9m001_s_ctrl,
@@ -675,9 +686,14 @@ static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
.cropcap = mt9m001_cropcap,
};
+static struct v4l2_subdev_sensor_ops mt9m001_subdev_sensor_ops = {
+ .skip_top_lines = mt9m001_skip_top_lines,
+};
+
static struct v4l2_subdev_ops mt9m001_subdev_ops = {
.core = &mt9m001_subdev_core_ops,
.video = &mt9m001_subdev_video_ops,
+ .sensor = &mt9m001_subdev_sensor_ops,
};
static int mt9m001_probe(struct i2c_client *client,
@@ -714,8 +730,8 @@ static int mt9m001_probe(struct i2c_client *client,
/* Second stage probe - when a capture adapter is there */
icd->ops = &mt9m001_ops;
- icd->y_skip_top = 0;
+ mt9m001->y_skip_top = 0;
mt9m001->rect.left = MT9M001_COLUMN_SKIP;
mt9m001->rect.top = MT9M001_ROW_SKIP;
mt9m001->rect.width = MT9M001_MAX_WIDTH;
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index 90da699..30db625 100644
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -1019,7 +1019,6 @@ static int mt9m111_probe(struct i2c_client *client,
/* Second stage probe - when a capture adapter is there */
icd->ops = &mt9m111_ops;
- icd->y_skip_top = 0;
mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 6966f64..57e04e9 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -301,9 +301,9 @@ static int mt9t031_set_params(struct soc_camera_device *icd,
ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1);
if (ret >= 0)
ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
- rect->height + icd->y_skip_top - 1);
+ rect->height - 1);
if (ret >= 0 && mt9t031->autoexposure) {
- unsigned int total_h = rect->height + icd->y_skip_top + vblank;
+ unsigned int total_h = rect->height + vblank;
ret = set_shutter(client, total_h);
if (ret >= 0) {
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
@@ -656,8 +656,7 @@ static int mt9t031_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
if (ctrl->value) {
const u16 vblank = MT9T031_VERTICAL_BLANK;
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
- unsigned int total_h = mt9t031->rect.height +
- icd->y_skip_top + vblank;
+ unsigned int total_h = mt9t031->rect.height + vblank;
if (set_shutter(client, total_h) < 0)
return -EIO;
@@ -773,7 +772,6 @@ static int mt9t031_probe(struct i2c_client *client,
/* Second stage probe - when a capture adapter is there */
icd->ops = &mt9t031_ops;
- icd->y_skip_top = 0;
mt9t031->rect.left = MT9T031_COLUMN_SKIP;
mt9t031->rect.top = MT9T031_ROW_SKIP;
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 995607f..73d708c 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -97,6 +97,7 @@ struct mt9v022 {
__u32 fourcc;
int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
u16 chip_control;
+ unsigned short y_skip_top; /* Lines to skip at the top */
};
static struct mt9v022 *to_mt9v022(const struct i2c_client *client)
@@ -265,7 +266,6 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
struct i2c_client *client = sd->priv;
struct mt9v022 *mt9v022 = to_mt9v022(client);
struct v4l2_rect rect = a->c;
- struct soc_camera_device *icd = client->dev.platform_data;
int ret;
/* Bayer format - even size lengths */
@@ -287,10 +287,10 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
if (ret >= 0) {
if (ret & 1) /* Autoexposure */
ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
- rect.height + icd->y_skip_top + 43);
+ rect.height + mt9v022->y_skip_top + 43);
else
ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
- rect.height + icd->y_skip_top + 43);
+ rect.height + mt9v022->y_skip_top + 43);
}
/* Setup frame format: defaults apart from width and height */
if (!ret)
@@ -309,7 +309,7 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
if (!ret)
ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
- rect.height + icd->y_skip_top);
+ rect.height + mt9v022->y_skip_top);
if (ret < 0)
return ret;
@@ -410,15 +410,15 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
static int mt9v022_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 mt9v022 *mt9v022 = to_mt9v022(client);
struct v4l2_pix_format *pix = &f->fmt.pix;
int align = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
pix->pixelformat == V4L2_PIX_FMT_SBGGR16;
v4l_bound_align_image(&pix->width, MT9V022_MIN_WIDTH,
MT9V022_MAX_WIDTH, align,
- &pix->height, MT9V022_MIN_HEIGHT + icd->y_skip_top,
- MT9V022_MAX_HEIGHT + icd->y_skip_top, align, 0);
+ &pix->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top,
+ MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0);
return 0;
}
@@ -787,6 +787,16 @@ static void mt9v022_video_remove(struct soc_camera_device *icd)
icl->free_bus(icl);
}
+static int mt9v022_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9v022 *mt9v022 = to_mt9v022(client);
+
+ *lines = mt9v022->y_skip_top;
+
+ return 0;
+}
+
static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
.g_ctrl = mt9v022_g_ctrl,
.s_ctrl = mt9v022_s_ctrl,
@@ -807,9 +817,14 @@ static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
.cropcap = mt9v022_cropcap,
};
+static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = {
+ .skip_top_lines = mt9v022_skip_top_lines,
+};
+
static struct v4l2_subdev_ops mt9v022_subdev_ops = {
.core = &mt9v022_subdev_core_ops,
.video = &mt9v022_subdev_video_ops,
+ .sensor = &mt9v022_subdev_sensor_ops,
};
static int mt9v022_probe(struct i2c_client *client,
@@ -851,8 +866,7 @@ static int mt9v022_probe(struct i2c_client *client,
* MT9V022 _really_ corrupts the first read out line.
* TODO: verify on i.MX31
*/
- icd->y_skip_top = 1;
-
+ mt9v022->y_skip_top = 1;
mt9v022->rect.left = MT9V022_COLUMN_SKIP;
mt9v022->rect.top = MT9V022_ROW_SKIP;
mt9v022->rect.width = MT9V022_MAX_WIDTH;
diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index 6952e96..db9245d 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -1050,8 +1050,13 @@ static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct pxa_camera_dev *pcdev = ici->priv;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
unsigned long dw, bpp;
- u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0;
+ u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0, y_skip_top;
+ int ret = v4l2_subdev_call(sd, sensor, skip_top_lines, &y_skip_top);
+
+ if (ret < 0)
+ y_skip_top = 0;
/* Datawidth is now guaranteed to be equal to one of the three values.
* We fix bit-per-pixel equal to data-width... */
@@ -1117,7 +1122,7 @@ static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
cicr2 = 0;
cicr3 = CICR3_LPF_VAL(icd->user_height - 1) |
- CICR3_BFW_VAL(min((unsigned short)255, icd->y_skip_top));
+ CICR3_BFW_VAL(min((unsigned short)255, y_skip_top));
cicr4 |= pcdev->mclk_divisor;
__raw_writel(cicr1, pcdev->base + CICR1);
diff --git a/drivers/media/video/soc_camera_platform.c b/drivers/media/video/soc_camera_platform.c
index 1b6dd02..8b1c735 100644
--- a/drivers/media/video/soc_camera_platform.c
+++ b/drivers/media/video/soc_camera_platform.c
@@ -128,7 +128,6 @@ static int soc_camera_platform_probe(struct platform_device *pdev)
/* Set the control device reference */
dev_set_drvdata(&icd->dev, &pdev->dev);
- icd->y_skip_top = 0;
icd->ops = &soc_camera_platform_ops;
ici = to_soc_camera_host(icd->dev.parent);
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index c5afc8c..218639f 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -24,7 +24,6 @@ struct soc_camera_device {
struct device *pdev; /* Platform device */
s32 user_width;
s32 user_height;
- unsigned short y_skip_top; /* Lines to skip at the top */
unsigned char iface; /* Host number */
unsigned char devnum; /* Device number per host */
unsigned char buswidth; /* See comment in .c */
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 89a39ce..159bbc6 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -225,8 +225,19 @@ struct v4l2_subdev_video_ops {
int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop);
int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
+};
+
+/**
+ * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations
+ * @enum_framesizes: enumerate supported framesizes
+ * @enum_frameintervals: enumerate supported frame format intervals
+ * @skip_top_lines: number of lines at the top of the image to be skipped. This
+ * is needed for some sensors, that corrupt several top lines.
+ */
+struct v4l2_subdev_sensor_ops {
int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
+ int (*skip_top_lines)(struct v4l2_subdev *sd, u32 *lines);
};
struct v4l2_subdev_ops {
@@ -234,6 +245,7 @@ struct v4l2_subdev_ops {
const struct v4l2_subdev_tuner_ops *tuner;
const struct v4l2_subdev_audio_ops *audio;
const struct v4l2_subdev_video_ops *video;
+ const struct v4l2_subdev_sensor_ops *sensor;
};
#define V4L2_SUBDEV_NAME_SIZE 32
--
1.6.2.4
--
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