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path: root/drivers/media/video/saa7115.c
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Diffstat (limited to 'drivers/media/video/saa7115.c')
-rw-r--r--drivers/media/video/saa7115.c64
1 files changed, 55 insertions, 9 deletions
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index 46c796c3fec8..cebf159f52cf 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 = {