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[media] adv7604: Receive CEA formats as RGB on VGA (RGB) input 

If the input is ADV7604_INPUT_VGA_RGB and RGB quantization range is
set to V4L2_DV_RGB_RANGE_AUTO, video with CEA timings will be
received as RGB. For ADV7604_INPUT_VGA_COMP, automatic CSC mode
will be selected.

See table 44 on page 205 in "ADV7604 Hardware Manual, Rev. F, August 2010"
for details.

Signed-off-by: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mats Randgaard 2013-12-05 10:05:58 -03:00 committed by Mauro Carvalho Chehab
parent 1577461be7
commit 9833239e13
1 changed files with 32 additions and 16 deletions
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48
drivers/media/i2c/adv7604.c
View File

@ -911,25 +911,41 @@ static void set_rgb_quantization_range(struct v4l2_subdev *sd)
{
struct adv7604_state *state = to_state(sd);
v4l2_dbg(2, debug, sd, "%s: rgb_quantization_range = %d\n",
__func__, state->rgb_quantization_range);
switch (state->rgb_quantization_range) {
case V4L2_DV_RGB_RANGE_AUTO:
/* automatic */
if (is_digital_input(sd) && !(hdmi_read(sd, 0x05) & 0x80)) {
/* receiving DVI-D signal */
if (state->selected_input == ADV7604_INPUT_VGA_RGB) {
/* Receiving analog RGB signal
* Set RGB full range (0-255) */
io_write_and_or(sd, 0x02, 0x0f, 0x10);
break;
}
/* ADV7604 selects RGB limited range regardless of
input format (CE/IT) in automatic mode */
if (state->timings.bt.standards & V4L2_DV_BT_STD_CEA861) {
/* RGB limited range (16-235) */
io_write_and_or(sd, 0x02, 0x0f, 0x00);
} else {
/* RGB full range (0-255) */
io_write_and_or(sd, 0x02, 0x0f, 0x10);
}
} else {
/* receiving HDMI or analog signal, set automode */
if (state->selected_input == ADV7604_INPUT_VGA_COMP) {
/* Receiving analog YPbPr signal
* Set automode */
io_write_and_or(sd, 0x02, 0x0f, 0xf0);
break;
}
if (hdmi_read(sd, 0x05) & 0x80) {
/* Receiving HDMI signal
* Set automode */
io_write_and_or(sd, 0x02, 0x0f, 0xf0);
break;
}
/* Receiving DVI-D signal
* ADV7604 selects RGB limited range regardless of
* input format (CE/IT) in automatic mode */
if (state->timings.bt.standards & V4L2_DV_BT_STD_CEA861) {
/* RGB limited range (16-235) */
io_write_and_or(sd, 0x02, 0x0f, 0x00);
} else {
/* RGB full range (0-255) */
io_write_and_or(sd, 0x02, 0x0f, 0x10);
}
break;
case V4L2_DV_RGB_RANGE_LIMITED:
@ -1709,7 +1725,7 @@ static int adv7604_log_status(struct v4l2_subdev *sd)
char *input_color_space_txt[16] = {
"RGB limited range (16-235)", "RGB full range (0-255)",
"YCbCr Bt.601 (16-235)", "YCbCr Bt.709 (16-235)",
"XvYCC Bt.601", "XvYCC Bt.709",
"xvYCC Bt.601", "xvYCC Bt.709",
"YCbCr Bt.601 (0-255)", "YCbCr Bt.709 (0-255)",
"invalid", "invalid", "invalid", "invalid", "invalid",
"invalid", "invalid", "automatic"