diff options
Diffstat (limited to 'drivers/media/video/mt9m111.c')
| -rw-r--r-- | drivers/media/video/mt9m111.c | 112 |
1 files changed, 95 insertions, 17 deletions
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c index 3637376da755..920dd53c4cfa 100644 --- a/drivers/media/video/mt9m111.c +++ b/drivers/media/video/mt9m111.c @@ -194,7 +194,7 @@ static int mt9m111_reg_read(struct i2c_client *client, const u16 reg) ret = reg_page_map_set(client, reg); if (!ret) - ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff))); + ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff)); dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret); return ret; @@ -257,8 +257,8 @@ static int mt9m111_setup_rect(struct i2c_client *client, int width = rect->width; int height = rect->height; - if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8) - || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16)) + if (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8 || + mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16) is_raw_format = 1; else is_raw_format = 0; @@ -395,23 +395,85 @@ static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f) return 0; } +static int mt9m111_make_rect(struct i2c_client *client, + struct v4l2_rect *rect) +{ + struct mt9m111 *mt9m111 = to_mt9m111(client); + + if (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8 || + mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16) { + /* Bayer format - even size lengths */ + rect->width = ALIGN(rect->width, 2); + rect->height = ALIGN(rect->height, 2); + /* Let the user play with the starting pixel */ + } + + /* FIXME: the datasheet doesn't specify minimum sizes */ + soc_camera_limit_side(&rect->left, &rect->width, + MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH); + + soc_camera_limit_side(&rect->top, &rect->height, + MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT); + + return mt9m111_setup_rect(client, rect); +} + static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) { - struct v4l2_rect *rect = &a->c; + struct v4l2_rect rect = a->c; struct i2c_client *client = sd->priv; struct mt9m111 *mt9m111 = to_mt9m111(client); int ret; dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n", - __func__, rect->left, rect->top, rect->width, - rect->height); + __func__, rect.left, rect.top, rect.width, rect.height); - ret = mt9m111_setup_rect(client, rect); + ret = mt9m111_make_rect(client, &rect); if (!ret) - mt9m111->rect = *rect; + mt9m111->rect = rect; return ret; } +static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct i2c_client *client = sd->priv; + struct mt9m111 *mt9m111 = to_mt9m111(client); + + a->c = mt9m111->rect; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + return 0; +} + +static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) +{ + a->bounds.left = MT9M111_MIN_DARK_COLS; + a->bounds.top = MT9M111_MIN_DARK_ROWS; + a->bounds.width = MT9M111_MAX_WIDTH; + a->bounds.height = MT9M111_MAX_HEIGHT; + a->defrect = a->bounds; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + a->pixelaspect.numerator = 1; + a->pixelaspect.denominator = 1; + + return 0; +} + +static int mt9m111_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) +{ + struct i2c_client *client = sd->priv; + struct mt9m111 *mt9m111 = to_mt9m111(client); + struct v4l2_pix_format *pix = &f->fmt.pix; + + pix->width = mt9m111->rect.width; + pix->height = mt9m111->rect.height; + pix->pixelformat = mt9m111->pixfmt; + pix->field = V4L2_FIELD_NONE; + pix->colorspace = V4L2_COLORSPACE_SRGB; + + return 0; +} + static int mt9m111_set_pixfmt(struct i2c_client *client, u32 pixfmt) { struct mt9m111 *mt9m111 = to_mt9m111(client); @@ -478,7 +540,7 @@ static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) __func__, pix->pixelformat, rect.left, rect.top, rect.width, rect.height); - ret = mt9m111_setup_rect(client, &rect); + ret = mt9m111_make_rect(client, &rect); if (!ret) ret = mt9m111_set_pixfmt(client, pix->pixelformat); if (!ret) @@ -489,11 +551,27 @@ static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) static int mt9m111_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) { struct v4l2_pix_format *pix = &f->fmt.pix; + bool bayer = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 || + pix->pixelformat == V4L2_PIX_FMT_SBGGR16; + + /* + * With Bayer format enforce even side lengths, but let the user play + * with the starting pixel + */ if (pix->height > MT9M111_MAX_HEIGHT) pix->height = MT9M111_MAX_HEIGHT; + else if (pix->height < 2) + pix->height = 2; + else if (bayer) + pix->height = ALIGN(pix->height, 2); + if (pix->width > MT9M111_MAX_WIDTH) pix->width = MT9M111_MAX_WIDTH; + else if (pix->width < 2) + pix->width = 2; + else if (bayer) + pix->width = ALIGN(pix->width, 2); return 0; } @@ -906,8 +984,11 @@ static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = { static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { .s_fmt = mt9m111_s_fmt, + .g_fmt = mt9m111_g_fmt, .try_fmt = mt9m111_try_fmt, .s_crop = mt9m111_s_crop, + .g_crop = mt9m111_g_crop, + .cropcap = mt9m111_cropcap, }; static struct v4l2_subdev_ops mt9m111_subdev_ops = { @@ -949,16 +1030,13 @@ static int mt9m111_probe(struct i2c_client *client, /* Second stage probe - when a capture adapter is there */ icd->ops = &mt9m111_ops; - icd->rect_max.left = MT9M111_MIN_DARK_COLS; - icd->rect_max.top = MT9M111_MIN_DARK_ROWS; - icd->rect_max.width = MT9M111_MAX_WIDTH; - icd->rect_max.height = MT9M111_MAX_HEIGHT; - icd->rect_current.left = icd->rect_max.left; - icd->rect_current.top = icd->rect_max.top; - icd->width_min = MT9M111_MIN_DARK_ROWS; - icd->height_min = MT9M111_MIN_DARK_COLS; icd->y_skip_top = 0; + mt9m111->rect.left = MT9M111_MIN_DARK_COLS; + mt9m111->rect.top = MT9M111_MIN_DARK_ROWS; + mt9m111->rect.width = MT9M111_MAX_WIDTH; + mt9m111->rect.height = MT9M111_MAX_HEIGHT; + ret = mt9m111_video_probe(icd, client); if (ret) { icd->ops = NULL; |