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path: root/drivers/media/video/mt9v022.c
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Diffstat (limited to 'drivers/media/video/mt9v022.c')
-rw-r--r--drivers/media/video/mt9v022.c228
1 files changed, 144 insertions, 84 deletions
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 995607f9d3ba..91df7ec91fb6 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -18,9 +18,11 @@
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
-/* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c
+/*
+ * mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c
* The platform has to define ctruct i2c_board_info objects and link to them
- * from struct soc_camera_link */
+ * from struct soc_camera_link
+ */
static char *sensor_type;
module_param(sensor_type, charp, S_IRUGO);
@@ -62,41 +64,49 @@ MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
#define MT9V022_COLUMN_SKIP 1
#define MT9V022_ROW_SKIP 4
-static const struct soc_camera_data_format mt9v022_colour_formats[] = {
- /* Order important: first natively supported,
- * second supported with a GPIO extender */
- {
- .name = "Bayer (sRGB) 10 bit",
- .depth = 10,
- .fourcc = V4L2_PIX_FMT_SBGGR16,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }, {
- .name = "Bayer (sRGB) 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_SBGGR8,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }
+/* MT9V022 has only one fixed colorspace per pixelcode */
+struct mt9v022_datafmt {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+};
+
+/* Find a data format by a pixel code in an array */
+static const struct mt9v022_datafmt *mt9v022_find_datafmt(
+ enum v4l2_mbus_pixelcode code, const struct mt9v022_datafmt *fmt,
+ int n)
+{
+ int i;
+ for (i = 0; i < n; i++)
+ if (fmt[i].code == code)
+ return fmt + i;
+
+ return NULL;
+}
+
+static const struct mt9v022_datafmt mt9v022_colour_fmts[] = {
+ /*
+ * Order important: first natively supported,
+ * second supported with a GPIO extender
+ */
+ {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
+ {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
};
-static const struct soc_camera_data_format mt9v022_monochrome_formats[] = {
+static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = {
/* Order important - see above */
- {
- .name = "Monochrome 10 bit",
- .depth = 10,
- .fourcc = V4L2_PIX_FMT_Y16,
- }, {
- .name = "Monochrome 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_GREY,
- },
+ {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG},
+ {V4L2_MBUS_FMT_GREY8_1X8, V4L2_COLORSPACE_JPEG},
};
struct mt9v022 {
struct v4l2_subdev subdev;
struct v4l2_rect rect; /* Sensor window */
- __u32 fourcc;
+ const struct mt9v022_datafmt *fmt;
+ const struct mt9v022_datafmt *fmts;
+ int num_fmts;
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)
@@ -143,9 +153,11 @@ static int mt9v022_init(struct i2c_client *client)
struct mt9v022 *mt9v022 = to_mt9v022(client);
int ret;
- /* Almost the default mode: master, parallel, simultaneous, and an
+ /*
+ * Almost the default mode: master, parallel, simultaneous, and an
* undocumented bit 0x200, which is present in table 7, but not in 8,
- * plus snapshot mode to disable scan for now */
+ * plus snapshot mode to disable scan for now
+ */
mt9v022->chip_control |= 0x10;
ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
if (!ret)
@@ -265,12 +277,10 @@ 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 */
- if (mt9v022->fourcc == V4L2_PIX_FMT_SBGGR8 ||
- mt9v022->fourcc == V4L2_PIX_FMT_SBGGR16) {
+ if (mt9v022->fmts == mt9v022_colour_fmts) {
rect.width = ALIGN(rect.width, 2);
rect.height = ALIGN(rect.height, 2);
/* Let the user play with the starting pixel */
@@ -287,10 +297,10 @@ 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)
@@ -298,8 +308,10 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
if (!ret)
ret = reg_write(client, MT9V022_ROW_START, rect.top);
if (!ret)
- /* Default 94, Phytec driver says:
- * "width + horizontal blank >= 660" */
+ /*
+ * Default 94, Phytec driver says:
+ * "width + horizontal blank >= 660"
+ */
ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
rect.width > 660 - 43 ? 43 :
660 - rect.width);
@@ -309,7 +321,7 @@ 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;
@@ -346,46 +358,48 @@ static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
return 0;
}
-static int mt9v022_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9v022_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct mt9v022 *mt9v022 = to_mt9v022(client);
- struct v4l2_pix_format *pix = &f->fmt.pix;
- pix->width = mt9v022->rect.width;
- pix->height = mt9v022->rect.height;
- pix->pixelformat = mt9v022->fourcc;
- pix->field = V4L2_FIELD_NONE;
- pix->colorspace = V4L2_COLORSPACE_SRGB;
+ mf->width = mt9v022->rect.width;
+ mf->height = mt9v022->rect.height;
+ mf->code = mt9v022->fmt->code;
+ mf->colorspace = mt9v022->fmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
return 0;
}
-static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9v022_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct mt9v022 *mt9v022 = to_mt9v022(client);
- struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_crop a = {
.c = {
.left = mt9v022->rect.left,
.top = mt9v022->rect.top,
- .width = pix->width,
- .height = pix->height,
+ .width = mf->width,
+ .height = mf->height,
},
};
int ret;
- /* The caller provides a supported format, as verified per call to
- * icd->try_fmt(), datawidth is from our supported format list */
- switch (pix->pixelformat) {
- case V4L2_PIX_FMT_GREY:
- case V4L2_PIX_FMT_Y16:
+ /*
+ * The caller provides a supported format, as verified per call to
+ * icd->try_fmt(), datawidth is from our supported format list
+ */
+ switch (mf->code) {
+ case V4L2_MBUS_FMT_GREY8_1X8:
+ case V4L2_MBUS_FMT_Y10_1X10:
if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
return -EINVAL;
break;
- case V4L2_PIX_FMT_SBGGR8:
- case V4L2_PIX_FMT_SBGGR16:
+ case V4L2_MBUS_FMT_SBGGR8_1X8:
+ case V4L2_MBUS_FMT_SBGGR10_1X10:
if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
return -EINVAL;
break;
@@ -399,26 +413,38 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
/* No support for scaling on this camera, just crop. */
ret = mt9v022_s_crop(sd, &a);
if (!ret) {
- pix->width = mt9v022->rect.width;
- pix->height = mt9v022->rect.height;
- mt9v022->fourcc = pix->pixelformat;
+ mf->width = mt9v022->rect.width;
+ mf->height = mt9v022->rect.height;
+ mt9v022->fmt = mt9v022_find_datafmt(mf->code,
+ mt9v022->fmts, mt9v022->num_fmts);
+ mf->colorspace = mt9v022->fmt->colorspace;
}
return ret;
}
-static int mt9v022_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9v022_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
- struct soc_camera_device *icd = client->dev.platform_data;
- struct v4l2_pix_format *pix = &f->fmt.pix;
- int align = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
- pix->pixelformat == V4L2_PIX_FMT_SBGGR16;
+ struct mt9v022 *mt9v022 = to_mt9v022(client);
+ const struct mt9v022_datafmt *fmt;
+ int align = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
+ mf->code == V4L2_MBUS_FMT_SBGGR10_1X10;
- v4l_bound_align_image(&pix->width, MT9V022_MIN_WIDTH,
+ v4l_bound_align_image(&mf->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);
+ &mf->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top,
+ MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0);
+
+ fmt = mt9v022_find_datafmt(mf->code, mt9v022->fmts,
+ mt9v022->num_fmts);
+ if (!fmt) {
+ fmt = mt9v022->fmt;
+ mf->code = fmt->code;
+ }
+
+ mf->colorspace = fmt->colorspace;
return 0;
}
@@ -635,8 +661,10 @@ static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
48 + range / 2) / range + 16;
if (gain >= 32)
gain &= ~1;
- /* The user wants to set gain manually, hope, she
- * knows, what she's doing... Switch AGC off. */
+ /*
+ * The user wants to set gain manually, hope, she
+ * knows, what she's doing... Switch AGC off.
+ */
if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
return -EIO;
@@ -655,8 +683,10 @@ static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
unsigned long range = qctrl->maximum - qctrl->minimum;
unsigned long shutter = ((ctrl->value - qctrl->minimum) *
479 + range / 2) / range + 1;
- /* The user wants to set shutter width manually, hope,
- * she knows, what she's doing... Switch AEC off. */
+ /*
+ * The user wants to set shutter width manually, hope,
+ * she knows, what she's doing... Switch AEC off.
+ */
if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
return -EIO;
@@ -689,8 +719,10 @@ static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
return 0;
}
-/* 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 */
+/*
+ * 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 mt9v022_video_probe(struct soc_camera_device *icd,
struct i2c_client *client)
{
@@ -733,17 +765,17 @@ static int mt9v022_video_probe(struct soc_camera_device *icd,
!strcmp("color", sensor_type))) {
ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
- icd->formats = mt9v022_colour_formats;
+ mt9v022->fmts = mt9v022_colour_fmts;
} else {
ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
- icd->formats = mt9v022_monochrome_formats;
+ mt9v022->fmts = mt9v022_monochrome_fmts;
}
if (ret < 0)
goto ei2c;
- icd->num_formats = 0;
+ mt9v022->num_fmts = 0;
/*
* This is a 10bit sensor, so by default we only allow 10bit.
@@ -756,14 +788,14 @@ static int mt9v022_video_probe(struct soc_camera_device *icd,
flags = SOCAM_DATAWIDTH_10;
if (flags & SOCAM_DATAWIDTH_10)
- icd->num_formats++;
+ mt9v022->num_fmts++;
else
- icd->formats++;
+ mt9v022->fmts++;
if (flags & SOCAM_DATAWIDTH_8)
- icd->num_formats++;
+ mt9v022->num_fmts++;
- mt9v022->fourcc = icd->formats->fourcc;
+ mt9v022->fmt = &mt9v022->fmts[0];
dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
@@ -787,6 +819,16 @@ static void mt9v022_video_remove(struct soc_camera_device *icd)
icl->free_bus(icl);
}
+static int mt9v022_g_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,
@@ -797,19 +839,38 @@ static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
#endif
};
+static int mt9v022_enum_fmt(struct v4l2_subdev *sd, int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9v022 *mt9v022 = to_mt9v022(client);
+
+ if ((unsigned int)index >= mt9v022->num_fmts)
+ return -EINVAL;
+
+ *code = mt9v022->fmts[index].code;
+ return 0;
+}
+
static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
.s_stream = mt9v022_s_stream,
- .s_fmt = mt9v022_s_fmt,
- .g_fmt = mt9v022_g_fmt,
- .try_fmt = mt9v022_try_fmt,
+ .s_mbus_fmt = mt9v022_s_fmt,
+ .g_mbus_fmt = mt9v022_g_fmt,
+ .try_mbus_fmt = mt9v022_try_fmt,
.s_crop = mt9v022_s_crop,
.g_crop = mt9v022_g_crop,
.cropcap = mt9v022_cropcap,
+ .enum_mbus_fmt = mt9v022_enum_fmt,
+};
+
+static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = {
+ .g_skip_top_lines = mt9v022_g_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 +912,7 @@ 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;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.