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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.c205
1 files changed, 131 insertions, 74 deletions
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 45388d2ce2f..b62c0bd3f8e 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -17,9 +17,11 @@
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
-/* mt9m001 i2c address 0x5d
+/*
+ * mt9m001 i2c address 0x5d
* The platform has to define ctruct i2c_board_info objects and link to them
- * from struct soc_camera_link */
+ * from struct soc_camera_link
+ */
/* mt9m001 selected register addresses */
#define MT9M001_CHIP_VERSION 0x00
@@ -46,42 +48,50 @@
#define MT9M001_COLUMN_SKIP 20
#define MT9M001_ROW_SKIP 12
-static const struct soc_camera_data_format mt9m001_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,
- }
+/* MT9M001 has only one fixed colorspace per pixelcode */
+struct mt9m001_datafmt {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+};
+
+/* Find a data format by a pixel code in an array */
+static const struct mt9m001_datafmt *mt9m001_find_datafmt(
+ enum v4l2_mbus_pixelcode code, const struct mt9m001_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 mt9m001_datafmt mt9m001_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 mt9m001_monochrome_formats[] = {
+static const struct mt9m001_datafmt mt9m001_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 mt9m001 {
struct v4l2_subdev subdev;
struct v4l2_rect rect; /* Sensor window */
- __u32 fourcc;
+ const struct mt9m001_datafmt *fmt;
+ const struct mt9m001_datafmt *fmts;
+ int num_fmts;
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;
};
@@ -204,8 +214,7 @@ static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
const u16 hblank = 9, vblank = 25;
unsigned int total_h;
- if (mt9m001->fourcc == V4L2_PIX_FMT_SBGGR8 ||
- mt9m001->fourcc == V4L2_PIX_FMT_SBGGR16)
+ if (mt9m001->fmts == mt9m001_colour_fmts)
/*
* Bayer format - even number of rows for simplicity,
* but let the user play with the top row.
@@ -222,15 +231,17 @@ 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);
if (!ret)
ret = reg_write(client, MT9M001_VERTICAL_BLANKING, vblank);
- /* The caller provides a supported format, as verified per
- * call to icd->try_fmt() */
+ /*
+ * The caller provides a supported format, as verified per
+ * call to icd->try_fmt()
+ */
if (!ret)
ret = reg_write(client, MT9M001_COLUMN_START, rect.left);
if (!ret)
@@ -239,7 +250,7 @@ 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) {
@@ -283,32 +294,32 @@ static int mt9m001_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
return 0;
}
-static int mt9m001_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9m001_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct v4l2_pix_format *pix = &f->fmt.pix;
- pix->width = mt9m001->rect.width;
- pix->height = mt9m001->rect.height;
- pix->pixelformat = mt9m001->fourcc;
- pix->field = V4L2_FIELD_NONE;
- pix->colorspace = V4L2_COLORSPACE_SRGB;
+ mf->width = mt9m001->rect.width;
+ mf->height = mt9m001->rect.height;
+ mf->code = mt9m001->fmt->code;
+ mf->colorspace = mt9m001->fmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
return 0;
}
-static int mt9m001_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9m001_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = sd->priv;
struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_crop a = {
.c = {
.left = mt9m001->rect.left,
.top = mt9m001->rect.top,
- .width = pix->width,
- .height = pix->height,
+ .width = mf->width,
+ .height = mf->height,
},
};
int ret;
@@ -316,28 +327,39 @@ static int mt9m001_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
/* No support for scaling so far, just crop. TODO: use skipping */
ret = mt9m001_s_crop(sd, &a);
if (!ret) {
- pix->width = mt9m001->rect.width;
- pix->height = mt9m001->rect.height;
- mt9m001->fourcc = pix->pixelformat;
+ mf->width = mt9m001->rect.width;
+ mf->height = mt9m001->rect.height;
+ mt9m001->fmt = mt9m001_find_datafmt(mf->code,
+ mt9m001->fmts, mt9m001->num_fmts);
+ mf->colorspace = mt9m001->fmt->colorspace;
}
return ret;
}
-static int mt9m001_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9m001_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;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ const struct mt9m001_datafmt *fmt;
- v4l_bound_align_image(&pix->width, MT9M001_MIN_WIDTH,
+ v4l_bound_align_image(&mf->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);
+ &mf->height, MT9M001_MIN_HEIGHT + mt9m001->y_skip_top,
+ MT9M001_MAX_HEIGHT + mt9m001->y_skip_top, 0, 0);
+
+ if (mt9m001->fmts == mt9m001_colour_fmts)
+ mf->height = ALIGN(mf->height - 1, 2);
- if (pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
- pix->pixelformat == V4L2_PIX_FMT_SBGGR16)
- pix->height = ALIGN(pix->height - 1, 2);
+ fmt = mt9m001_find_datafmt(mf->code, mt9m001->fmts,
+ mt9m001->num_fmts);
+ if (!fmt) {
+ fmt = mt9m001->fmt;
+ mf->code = fmt->code;
+ }
+
+ mf->colorspace = fmt->colorspace;
return 0;
}
@@ -552,7 +574,7 @@ 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;
@@ -568,8 +590,10 @@ static int mt9m001_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 mt9m001_video_probe(struct soc_camera_device *icd,
struct i2c_client *client)
{
@@ -579,8 +603,10 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
unsigned long flags;
int ret;
- /* We must have a parent by now. And it cannot be a wrong one.
- * So this entire test is completely redundant. */
+ /*
+ * We must have a parent by now. And it cannot be a wrong one.
+ * So this entire test is completely redundant.
+ */
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
@@ -597,11 +623,11 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
case 0x8411:
case 0x8421:
mt9m001->model = V4L2_IDENT_MT9M001C12ST;
- icd->formats = mt9m001_colour_formats;
+ mt9m001->fmts = mt9m001_colour_fmts;
break;
case 0x8431:
mt9m001->model = V4L2_IDENT_MT9M001C12STM;
- icd->formats = mt9m001_monochrome_formats;
+ mt9m001->fmts = mt9m001_monochrome_fmts;
break;
default:
dev_err(&client->dev,
@@ -609,7 +635,7 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
return -ENODEV;
}
- icd->num_formats = 0;
+ mt9m001->num_fmts = 0;
/*
* This is a 10bit sensor, so by default we only allow 10bit.
@@ -622,14 +648,14 @@ static int mt9m001_video_probe(struct soc_camera_device *icd,
flags = SOCAM_DATAWIDTH_10;
if (flags & SOCAM_DATAWIDTH_10)
- icd->num_formats++;
+ mt9m001->num_fmts++;
else
- icd->formats++;
+ mt9m001->fmts++;
if (flags & SOCAM_DATAWIDTH_8)
- icd->num_formats++;
+ mt9m001->num_fmts++;
- mt9m001->fourcc = icd->formats->fourcc;
+ mt9m001->fmt = &mt9m001->fmts[0];
dev_info(&client->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
data == 0x8431 ? "C12STM" : "C12ST");
@@ -655,6 +681,16 @@ static void mt9m001_video_remove(struct soc_camera_device *icd)
icl->free_bus(icl);
}
+static int mt9m001_g_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,
@@ -665,19 +701,38 @@ static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
#endif
};
+static int mt9m001_enum_fmt(struct v4l2_subdev *sd, int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ if ((unsigned int)index >= mt9m001->num_fmts)
+ return -EINVAL;
+
+ *code = mt9m001->fmts[index].code;
+ return 0;
+}
+
static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
.s_stream = mt9m001_s_stream,
- .s_fmt = mt9m001_s_fmt,
- .g_fmt = mt9m001_g_fmt,
- .try_fmt = mt9m001_try_fmt,
+ .s_mbus_fmt = mt9m001_s_fmt,
+ .g_mbus_fmt = mt9m001_g_fmt,
+ .try_mbus_fmt = mt9m001_try_fmt,
.s_crop = mt9m001_s_crop,
.g_crop = mt9m001_g_crop,
.cropcap = mt9m001_cropcap,
+ .enum_mbus_fmt = mt9m001_enum_fmt,
+};
+
+static struct v4l2_subdev_sensor_ops mt9m001_subdev_sensor_ops = {
+ .g_skip_top_lines = mt9m001_g_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,
@@ -714,15 +769,17 @@ 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;
mt9m001->rect.height = MT9M001_MAX_HEIGHT;
- /* Simulated autoexposure. If enabled, we calculate shutter width
- * ourselves in the driver based on vertical blanking and frame width */
+ /*
+ * Simulated autoexposure. If enabled, we calculate shutter width
+ * ourselves in the driver based on vertical blanking and frame width
+ */
mt9m001->autoexposure = 1;
ret = mt9m001_video_probe(icd, client);