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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2009-08-25 18:44:14 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-19 07:18:38 +0400 |
| commit | a813d01f823259d1b27668c2149785515843a7eb (patch) | |
| tree | 42c823775525880849338730e50aaba6f584fd45 /drivers/media/video/ov772x.c | |
| parent | 3418f165cc1cbcb30a8c017d7ebbc774710066bb (diff) | |
| download | linux-a813d01f823259d1b27668c2149785515843a7eb.tar.xz | |
V4L/DVB (12512): ov772x: implement a band-stop filter support
The V4L2_CID_BAND_STOP_FILTER control is used to switch the "Banding Filter" on
OV772x cameras on and off and to set the minimum AEC value in BDBASE register.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ov772x.c')
| -rw-r--r-- | drivers/media/video/ov772x.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c index 119159773a68..4c550f91ca24 100644 --- a/drivers/media/video/ov772x.c +++ b/drivers/media/video/ov772x.c @@ -403,8 +403,9 @@ struct ov772x_priv { const struct ov772x_color_format *fmt; const struct ov772x_win_size *win; int model; - unsigned int flag_vflip:1; - unsigned int flag_hflip:1; + unsigned short flag_vflip:1; + unsigned short flag_hflip:1; + unsigned short band_filter; /* 256 - BDBASE, 0 if (!COM8[5]) */ }; #define ENDMARKER { 0xff, 0xff } @@ -569,6 +570,15 @@ static const struct v4l2_queryctrl ov772x_controls[] = { .step = 1, .default_value = 0, }, + { + .id = V4L2_CID_BAND_STOP_FILTER, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Band-stop filter", + .minimum = 0, + .maximum = 256, + .step = 1, + .default_value = 0, + }, }; @@ -674,6 +684,9 @@ static int ov772x_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) case V4L2_CID_HFLIP: ctrl->value = priv->flag_hflip; break; + case V4L2_CID_BAND_STOP_FILTER: + ctrl->value = priv->band_filter; + break; } return 0; } @@ -700,6 +713,29 @@ static int ov772x_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) val ^= HFLIP_IMG; ret = ov772x_mask_set(client, COM3, HFLIP_IMG, val); break; + case V4L2_CID_BAND_STOP_FILTER: + if ((unsigned)ctrl->value > 256) + ctrl->value = 256; + if (ctrl->value == priv->band_filter) + break; + if (!ctrl->value) { + /* Switch the filter off, it is on now */ + ret = ov772x_mask_set(client, BDBASE, 0xff, 0xff); + if (!ret) + ret = ov772x_mask_set(client, COM8, + BNDF_ON_OFF, 0); + } else { + /* Switch the filter on, set AEC low limit */ + val = 256 - ctrl->value; + ret = ov772x_mask_set(client, COM8, + BNDF_ON_OFF, BNDF_ON_OFF); + if (!ret) + ret = ov772x_mask_set(client, BDBASE, + 0xff, val); + } + if (!ret) + priv->band_filter = ctrl->value; + break; } return ret; @@ -893,6 +929,18 @@ static int ov772x_set_params(struct i2c_client *client, if (ret < 0) goto ov772x_set_fmt_error; + /* + * set COM8 + */ + if (priv->band_filter) { + ret = ov772x_mask_set(client, COM8, BNDF_ON_OFF, 1); + if (!ret) + ret = ov772x_mask_set(client, BDBASE, + 0xff, 256 - priv->band_filter); + if (ret < 0) + goto ov772x_set_fmt_error; + } + return ret; ov772x_set_fmt_error: |