Hi Mauro, I've finally found the time (and an energy)
to go look into the automute breakage.
With the attached automute fix I no longer have
any problems with pulseaudio.
I also attached the patch that introduces an "std"
option to limit the scan list, resulting in a faster scan.
It is completely unrelated to the automute one, it is
here just in case.
What do you think?
>From ccdfa126e98b5484f4a08de591ac8d89f775251c Mon Sep 17 00:00:00 2001
From: Stas Sergeev <s...@users.sourceforge.net>
Date: Sun, 18 Sep 2011 19:06:21 +0400
Subject: [PATCH 1/2] saa7134: fix automute
---
drivers/media/video/saa7134/saa7134-tvaudio.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/media/video/saa7134/saa7134-tvaudio.c b/drivers/media/video/saa7134/saa7134-tvaudio.c
index 57e646b..62a6287 100644
--- a/drivers/media/video/saa7134/saa7134-tvaudio.c
+++ b/drivers/media/video/saa7134/saa7134-tvaudio.c
@@ -332,7 +332,7 @@ static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
{
__s32 left,right,value;
- if (audio_debug > 1) {
+ if (audio_debug > 1 && (dev->tvnorm->id & scan->std)) {
int i;
dprintk("debug %d:",scan->carr);
for (i = -150; i <= 150; i += 30) {
@@ -546,6 +546,7 @@ static int tvaudio_thread(void *data)
dev->tvnorm->name, carrier/1000, carrier%1000,
max1, max2);
dev->last_carrier = carrier;
+ dev->automute = !(dev->thread.scan1 > 1);
} else if (0 != dev->last_carrier) {
/* no carrier -- try last detected one as fallback */
@@ -553,6 +554,7 @@ static int tvaudio_thread(void *data)
dprintk("audio carrier scan failed, "
"using %d.%03d MHz [last detected]\n",
carrier/1000, carrier%1000);
+ dev->automute = 1;
} else {
/* no carrier + no fallback -- use default */
@@ -560,9 +562,9 @@ static int tvaudio_thread(void *data)
dprintk("audio carrier scan failed, "
"using %d.%03d MHz [default]\n",
carrier/1000, carrier%1000);
+ dev->automute = 1;
}
tvaudio_setcarrier(dev,carrier,carrier);
- dev->automute = 0;
saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
saa7134_tvaudio_setmute(dev);
/* find the exact tv audio norm */
@@ -1020,6 +1022,7 @@ int saa7134_tvaudio_init2(struct saa7134_dev *dev)
}
dev->thread.thread = NULL;
+ dev->thread.scan1 = dev->thread.scan2 = 0;
if (my_thread) {
saa7134_tvaudio_init(dev);
/* start tvaudio thread */
--
1.7.6
>From 70709f12f7161c98cb7ebae104b520dc30c6bd53 Mon Sep 17 00:00:00 2001
From: Stas Sergeev <s...@users.sourceforge.net>
Date: Sun, 18 Sep 2011 19:13:05 +0400
Subject: [PATCH 2/2] saa7134: introduce "std" module parameter to force video
std
---
drivers/media/video/saa7134/saa7134-video.c | 39 ++++++++++++++++++++++++--
drivers/media/video/saa7134/saa7134.h | 1 +
2 files changed, 37 insertions(+), 3 deletions(-)
diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c
index 776ba2d..04ac7de 100644
--- a/drivers/media/video/saa7134/saa7134-video.c
+++ b/drivers/media/video/saa7134/saa7134-video.c
@@ -40,12 +40,15 @@ static unsigned int noninterlaced; /* 0 */
static unsigned int gbufsize = 720*576*4;
static unsigned int gbufsize_max = 720*576*4;
static char secam[] = "--";
+static char std[16] = "--";
module_param(video_debug, int, 0644);
MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
module_param(gbuffers, int, 0444);
MODULE_PARM_DESC(gbuffers,"number of capture buffers, range 2-32");
module_param(noninterlaced, int, 0644);
MODULE_PARM_DESC(noninterlaced,"capture non interlaced video");
+module_param_string(std, std, sizeof(std), 0644);
+MODULE_PARM_DESC(secam, "force TV standard, either PAL, SECAM or NTSC");
module_param_string(secam, secam, sizeof(secam), 0644);
MODULE_PARM_DESC(secam, "force SECAM variant, either DK,L or Lc");
@@ -1847,14 +1850,20 @@ int saa7134_s_std_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, v4l2_
return -EBUSY;
}
- for (i = 0; i < TVNORMS; i++)
+ for (i = 0; i < TVNORMS; i++) {
+ if (!tvnorms[i].enabled)
+ continue;
if (*id == tvnorms[i].id)
break;
+ }
if (i == TVNORMS)
- for (i = 0; i < TVNORMS; i++)
+ for (i = 0; i < TVNORMS; i++) {
+ if (!tvnorms[i].enabled)
+ continue;
if (*id & tvnorms[i].id)
break;
+ }
if (i == TVNORMS)
return -EINVAL;
@@ -1871,6 +1880,8 @@ int saa7134_s_std_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, v4l2_
fixup = V4L2_STD_SECAM;
}
for (i = 0; i < TVNORMS; i++) {
+ if (!tvnorms[i].enabled)
+ continue;
if (fixup == tvnorms[i].id)
break;
}
@@ -2579,8 +2590,30 @@ int saa7134_videoport_init(struct saa7134_dev *dev)
int saa7134_video_init2(struct saa7134_dev *dev)
{
+ int i, idx = -1;
+ for (i = 0; i < TVNORMS; i++) {
+ int enable = (std[0] == '-' || strncasecmp(std,
+ tvnorms[i].name, strlen(std)) == 0);
+
+ if (secam[0] != '-') {
+ char buf[16] = "SECAM";
+ if (strncasecmp(buf, tvnorms[i].name,
+ strlen(buf)) == 0) {
+ strcat(buf, "-");
+ strcat(buf, secam);
+ if (strncasecmp(buf, tvnorms[i].name,
+ strlen(buf)) != 0)
+ enable = 0;
+ }
+ }
+ tvnorms[i].enabled = enable;
+ if (enable && idx == -1)
+ idx = i;
+ }
+ if (idx == -1)
+ return -EINVAL;
/* init video hw */
- set_tvnorm(dev,&tvnorms[0]);
+ set_tvnorm(dev,&tvnorms[idx]);
video_mux(dev,0);
saa7134_tvaudio_setmute(dev);
saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index 28eb103..a0eddce 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -77,6 +77,7 @@ enum saa7134_video_out {
struct saa7134_tvnorm {
char *name;
v4l2_std_id id;
+ int enabled;
/* video decoder */
unsigned int sync_control;
--
1.7.6
