diff options
Diffstat (limited to 'drivers/media/video/saa7115.c')
| -rw-r--r-- | drivers/media/video/saa7115.c | 64 |
1 files changed, 55 insertions, 9 deletions
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c index 46c796c3fec..cebf159f52c 100644 --- a/drivers/media/video/saa7115.c +++ b/drivers/media/video/saa7115.c @@ -778,7 +778,7 @@ static int saa711x_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) break; case V4L2_CID_HUE: - if (ctrl->value < -127 || ctrl->value > 127) { + if (ctrl->value < -128 || ctrl->value > 127) { v4l2_err(sd, "invalid hue setting %d\n", ctrl->value); return -ERANGE; } @@ -931,8 +931,8 @@ static void saa711x_set_v4lstd(struct v4l2_subdev *sd, v4l2_std_id std) /* Prevent unnecessary standard changes. During a standard change the I-Port is temporarily disabled. Any devices reading from that port can get confused. - Note that VIDIOC_S_STD is also used to switch from - radio to TV mode, so if a VIDIOC_S_STD is broadcast to + Note that s_std is also used to switch from + radio to TV mode, so if a s_std is broadcast to all I2C devices then you do not want to have an unwanted side-effect here. */ if (std == state->std) @@ -1206,10 +1206,12 @@ static int saa711x_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) { switch (qc->id) { case V4L2_CID_BRIGHTNESS: + return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128); case V4L2_CID_CONTRAST: case V4L2_CID_SATURATION: + return v4l2_ctrl_query_fill(qc, 0, 127, 1, 64); case V4L2_CID_HUE: - return v4l2_ctrl_query_fill_std(qc); + return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0); default: return -EINVAL; } @@ -1308,11 +1310,12 @@ static int saa711x_s_stream(struct v4l2_subdev *sd, int enable) v4l2_dbg(1, debug, sd, "%s output\n", enable ? "enable" : "disable"); - if (state->enable != enable) { - state->enable = enable; - saa711x_write(sd, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED, - state->enable); - } + if (state->enable == enable) + return 0; + state->enable = enable; + if (!saa711x_has_reg(state->ident, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED)) + return 0; + saa711x_write(sd, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED, state->enable); return 0; } @@ -1370,6 +1373,47 @@ static int saa711x_g_vbi_data(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_dat } } +static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) +{ + struct saa711x_state *state = to_state(sd); + int reg1e; + + *std = V4L2_STD_ALL; + if (state->ident != V4L2_IDENT_SAA7115) + return 0; + reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC); + + switch (reg1e & 0x03) { + case 1: + *std = V4L2_STD_NTSC; + break; + case 2: + *std = V4L2_STD_PAL; + break; + case 3: + *std = V4L2_STD_SECAM; + break; + default: + break; + } + return 0; +} + +static int saa711x_g_input_status(struct v4l2_subdev *sd, u32 *status) +{ + struct saa711x_state *state = to_state(sd); + int reg1e = 0x80; + int reg1f; + + *status = V4L2_IN_ST_NO_SIGNAL; + if (state->ident == V4L2_IDENT_SAA7115) + reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC); + reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC); + if ((reg1f & 0xc1) == 0x81 && (reg1e & 0xc0) == 0x80) + *status = 0; + return 0; +} + #ifdef CONFIG_VIDEO_ADV_DEBUG static int saa711x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { @@ -1493,6 +1537,8 @@ static const struct v4l2_subdev_video_ops saa711x_video_ops = { .g_vbi_data = saa711x_g_vbi_data, .decode_vbi_line = saa711x_decode_vbi_line, .s_stream = saa711x_s_stream, + .querystd = saa711x_querystd, + .g_input_status = saa711x_g_input_status, }; static const struct v4l2_subdev_ops saa711x_ops = { |