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authorHans Verkuil <hans.verkuil@cisco.com>2012-09-20 09:06:33 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-05 22:10:38 -0300
commitc389648a927bada928c854dccccf0301317784eb (patch)
treead0cf86a4aa514a77cfcd1bc26f107b682b2e744 /drivers/media/i2c
parent0d4f35f3f0044303abfff57441dd1e98f96ea935 (diff)
[media] tvp514x: s_routing should just change routing, not try to detect a signal
The s_routing function should not try to detect a signal. It is a really bad idea to try to detect a valid video signal and return an error if you can't. Changing input should do just that and nothing more. Also don't power on the ADCs on s_routing, instead do that on querystd. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.lad@ti.com> Tested-by: Lad, Prabhakar <prabhakar.lad@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/i2c')
-rw-r--r--drivers/media/i2c/tvp514x.c77
1 files changed, 6 insertions, 71 deletions
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index 1f3943bb87d..d5e10215a28 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -519,6 +519,12 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
*std_id = V4L2_STD_UNKNOWN;
+ /* To query the standard the TVP514x must power on the ADCs. */
+ if (!decoder->streaming) {
+ tvp514x_s_stream(sd, 1);
+ msleep(LOCK_RETRY_DELAY);
+ }
+
/* query the current standard */
current_std = tvp514x_query_current_std(sd);
if (current_std == STD_INVALID)
@@ -625,25 +631,12 @@ static int tvp514x_s_routing(struct v4l2_subdev *sd,
int err;
enum tvp514x_input input_sel;
enum tvp514x_output output_sel;
- u8 sync_lock_status, lock_mask;
- int try_count = LOCK_RETRY_COUNT;
if ((input >= INPUT_INVALID) ||
(output >= OUTPUT_INVALID))
/* Index out of bound */
return -EINVAL;
- /*
- * For the sequence streamon -> streamoff and again s_input
- * it fails to lock the signal, since streamoff puts TVP514x
- * into power off state which leads to failure in sub-sequent s_input.
- *
- * So power up the TVP514x device here, since it is important to lock
- * the signal at this stage.
- */
- if (!decoder->streaming)
- tvp514x_s_stream(sd, 1);
-
input_sel = input;
output_sel = output;
@@ -660,64 +653,6 @@ static int tvp514x_s_routing(struct v4l2_subdev *sd,
decoder->tvp514x_regs[REG_INPUT_SEL].val = input_sel;
decoder->tvp514x_regs[REG_OUTPUT_FORMATTER1].val = output_sel;
-
- /* Clear status */
- msleep(LOCK_RETRY_DELAY);
- err =
- tvp514x_write_reg(sd, REG_CLEAR_LOST_LOCK, 0x01);
- if (err)
- return err;
-
- switch (input_sel) {
- case INPUT_CVBS_VI1A:
- case INPUT_CVBS_VI1B:
- case INPUT_CVBS_VI1C:
- case INPUT_CVBS_VI2A:
- case INPUT_CVBS_VI2B:
- case INPUT_CVBS_VI2C:
- case INPUT_CVBS_VI3A:
- case INPUT_CVBS_VI3B:
- case INPUT_CVBS_VI3C:
- case INPUT_CVBS_VI4A:
- lock_mask = STATUS_CLR_SUBCAR_LOCK_BIT |
- STATUS_HORZ_SYNC_LOCK_BIT |
- STATUS_VIRT_SYNC_LOCK_BIT;
- break;
-
- case INPUT_SVIDEO_VI2A_VI1A:
- case INPUT_SVIDEO_VI2B_VI1B:
- case INPUT_SVIDEO_VI2C_VI1C:
- case INPUT_SVIDEO_VI2A_VI3A:
- case INPUT_SVIDEO_VI2B_VI3B:
- case INPUT_SVIDEO_VI2C_VI3C:
- case INPUT_SVIDEO_VI4A_VI1A:
- case INPUT_SVIDEO_VI4A_VI1B:
- case INPUT_SVIDEO_VI4A_VI1C:
- case INPUT_SVIDEO_VI4A_VI3A:
- case INPUT_SVIDEO_VI4A_VI3B:
- case INPUT_SVIDEO_VI4A_VI3C:
- lock_mask = STATUS_HORZ_SYNC_LOCK_BIT |
- STATUS_VIRT_SYNC_LOCK_BIT;
- break;
- /* Need to add other interfaces*/
- default:
- return -EINVAL;
- }
-
- while (try_count-- > 0) {
- /* Allow decoder to sync up with new input */
- msleep(LOCK_RETRY_DELAY);
-
- sync_lock_status = tvp514x_read_reg(sd,
- REG_STATUS1);
- if (lock_mask == (sync_lock_status & lock_mask))
- /* Input detected */
- break;
- }
-
- if (try_count < 0)
- return -EINVAL;
-
decoder->input = input;
decoder->output = output;