diff options
author | Javier Martin <javier.martin@vista-silicon.com> | 2012-01-31 12:23:46 +0400 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-03-08 19:06:56 +0400 |
commit | 963ddc63e20d5ee8a45503e078e09d0cc086b59d (patch) | |
tree | fc6556f23b4403fd1f49aab999c668fc66084c0e /drivers/media/video/tvp5150.c | |
parent | d994c46d4309df85aea86049024cadfcbf523116 (diff) | |
download | linux-963ddc63e20d5ee8a45503e078e09d0cc086b59d.tar.xz |
[media] media: tvp5150: Add cropping support
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/tvp5150.c')
-rw-r--r-- | drivers/media/video/tvp5150.c | 127 |
1 files changed, 122 insertions, 5 deletions
diff --git a/drivers/media/video/tvp5150.c b/drivers/media/video/tvp5150.c index f1fcedd29eb4..907d560dd2b2 100644 --- a/drivers/media/video/tvp5150.c +++ b/drivers/media/video/tvp5150.c @@ -17,6 +17,13 @@ #include "tvp5150_reg.h" +#define TVP5150_H_MAX 720 +#define TVP5150_V_MAX_525_60 480 +#define TVP5150_V_MAX_OTHERS 576 +#define TVP5150_MAX_CROP_LEFT 511 +#define TVP5150_MAX_CROP_TOP 127 +#define TVP5150_CROP_SHIFT 2 + MODULE_DESCRIPTION("Texas Instruments TVP5150A video decoder driver"); MODULE_AUTHOR("Mauro Carvalho Chehab"); MODULE_LICENSE("GPL"); @@ -29,6 +36,7 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)"); struct tvp5150 { struct v4l2_subdev sd; struct v4l2_ctrl_handler hdl; + struct v4l2_rect rect; v4l2_std_id norm; /* Current set standard */ u32 input; @@ -732,6 +740,13 @@ static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std) if (decoder->norm == std) return 0; + /* Change cropping height limits */ + if (std & V4L2_STD_525_60) + decoder->rect.height = TVP5150_V_MAX_525_60; + else + decoder->rect.height = TVP5150_V_MAX_OTHERS; + + return tvp5150_set_std(sd, std); } @@ -828,11 +843,8 @@ static int tvp5150_mbus_fmt(struct v4l2_subdev *sd, else std = decoder->norm; - f->width = 720; - if (std & V4L2_STD_525_60) - f->height = 480; - else - f->height = 576; + f->width = decoder->rect.width; + f->height = decoder->rect.height; f->code = V4L2_MBUS_FMT_YUYV8_2X8; f->field = V4L2_FIELD_SEQ_TB; @@ -843,6 +855,99 @@ static int tvp5150_mbus_fmt(struct v4l2_subdev *sd, return 0; } +static int tvp5150_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct v4l2_rect rect = a->c; + struct tvp5150 *decoder = to_tvp5150(sd); + v4l2_std_id std; + int hmax; + + v4l2_dbg(1, debug, sd, "%s left=%d, top=%d, width=%d, height=%d\n", + __func__, rect.left, rect.top, rect.width, rect.height); + + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + /* tvp5150 has some special limits */ + rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT); + rect.width = clamp(rect.width, + TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect.left, + TVP5150_H_MAX - rect.left); + rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP); + + /* Calculate height based on current standard */ + if (decoder->norm == V4L2_STD_ALL) + std = tvp5150_read_std(sd); + else + std = decoder->norm; + + if (std & V4L2_STD_525_60) + hmax = TVP5150_V_MAX_525_60; + else + hmax = TVP5150_V_MAX_OTHERS; + + rect.height = clamp(rect.height, + hmax - TVP5150_MAX_CROP_TOP - rect.top, + hmax - rect.top); + + tvp5150_write(sd, TVP5150_VERT_BLANKING_START, rect.top); + tvp5150_write(sd, TVP5150_VERT_BLANKING_STOP, + rect.top + rect.height - hmax); + tvp5150_write(sd, TVP5150_ACT_VD_CROP_ST_MSB, + rect.left >> TVP5150_CROP_SHIFT); + tvp5150_write(sd, TVP5150_ACT_VD_CROP_ST_LSB, + rect.left | (1 << TVP5150_CROP_SHIFT)); + tvp5150_write(sd, TVP5150_ACT_VD_CROP_STP_MSB, + (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >> + TVP5150_CROP_SHIFT); + tvp5150_write(sd, TVP5150_ACT_VD_CROP_STP_LSB, + rect.left + rect.width - TVP5150_MAX_CROP_LEFT); + + decoder->rect = rect; + + return 0; +} + +static int tvp5150_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd); + + a->c = decoder->rect; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + return 0; +} + +static int tvp5150_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) +{ + struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd); + v4l2_std_id std; + + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + a->bounds.left = 0; + a->bounds.top = 0; + a->bounds.width = TVP5150_H_MAX; + + /* Calculate height based on current standard */ + if (decoder->norm == V4L2_STD_ALL) + std = tvp5150_read_std(sd); + else + std = decoder->norm; + + if (std & V4L2_STD_525_60) + a->bounds.height = TVP5150_V_MAX_525_60; + else + a->bounds.height = TVP5150_V_MAX_OTHERS; + + a->defrect = a->bounds; + a->pixelaspect.numerator = 1; + a->pixelaspect.denominator = 1; + + return 0; +} + /**************************************************************************** I2C Command ****************************************************************************/ @@ -998,6 +1103,9 @@ static const struct v4l2_subdev_video_ops tvp5150_video_ops = { .enum_mbus_fmt = tvp5150_enum_mbus_fmt, .s_mbus_fmt = tvp5150_mbus_fmt, .try_mbus_fmt = tvp5150_mbus_fmt, + .s_crop = tvp5150_s_crop, + .g_crop = tvp5150_g_crop, + .cropcap = tvp5150_cropcap, }; static const struct v4l2_subdev_vbi_ops tvp5150_vbi_ops = { @@ -1083,6 +1191,15 @@ static int tvp5150_probe(struct i2c_client *c, } v4l2_ctrl_handler_setup(&core->hdl); + /* Default is no cropping */ + core->rect.top = 0; + if (tvp5150_read_std(sd) & V4L2_STD_525_60) + core->rect.height = TVP5150_V_MAX_525_60; + else + core->rect.height = TVP5150_V_MAX_OTHERS; + core->rect.left = 0; + core->rect.width = TVP5150_H_MAX; + if (debug > 1) tvp5150_log_status(sd); return 0; |