On Mon, Jul 27, 2009 at 09:28:11PM -0300, Mauro Carvalho Chehab wrote:
> Hi Acano,
Tested-by: Angelo Cano <[email protected]>
works great
> > + /*FIXME hack to unmute usb audio stream */
> > + em28xx_set_ctrl(dev, ctrl);
>
> Hmm... this function were removed. In thesis, you shouldn't need to
> do anything to unmute.
>
I still need it, see attachment.
>
> Could you please try the enclosed patch and see if this is enough to fix for
> Plextor? If so, please send me a Tested-by: tag for me to add it at
> 2.6.31 fix patches.
>
Like I said the patch works great, and also solves my audio volume
problem. With your patch the volume is set to a sane value
(presumably 0db) and the distortion/clipping is gone.
Thanks man. The volume problem was driving me crazy.
diff -r fd96af63f79b linux/drivers/media/video/em28xx/em28xx-cards.c
--- a/linux/drivers/media/video/em28xx/em28xx-cards.c Fri Jun 19 19:56:56 2009 +0000
+++ b/linux/drivers/media/video/em28xx/em28xx-cards.c Tue Jul 28 19:26:58 2009 -0400
@@ -639,22 +639,27 @@ struct em28xx_board em28xx_boards[] = {
},
[EM2861_BOARD_PLEXTOR_PX_TV100U] = {
.name = "Plextor ConvertX PX-TV100U",
- .valid = EM28XX_BOARD_NOT_VALIDATED,
.tuner_type = TUNER_TNF_5335MF,
+ .xclk = EM28XX_XCLK_I2S_MSB_TIMING |
+ EM28XX_XCLK_FREQUENCY_12MHZ,
.tda9887_conf = TDA9887_PRESENT,
.decoder = EM28XX_TVP5150,
+ .has_msp34xx = 1,
.input = { {
.type = EM28XX_VMUX_TELEVISION,
.vmux = TVP5150_COMPOSITE0,
.amux = EM28XX_AMUX_LINE_IN,
+ .gpio = pinnacle_hybrid_pro_analog,
}, {
.type = EM28XX_VMUX_COMPOSITE1,
.vmux = TVP5150_COMPOSITE1,
.amux = EM28XX_AMUX_LINE_IN,
+ .gpio = pinnacle_hybrid_pro_analog,
}, {
.type = EM28XX_VMUX_SVIDEO,
.vmux = TVP5150_SVIDEO,
.amux = EM28XX_AMUX_LINE_IN,
+ .gpio = pinnacle_hybrid_pro_analog,
} },
},
@@ -1948,9 +1953,8 @@ void em28xx_pre_card_setup(struct em28xx
/* request some modules */
switch (dev->model) {
case EM2861_BOARD_PLEXTOR_PX_TV100U:
- /* FIXME guess */
- /* Turn on analog audio output */
- em28xx_write_reg(dev, EM28XX_R08_GPIO, 0xfd);
+ /* Sets the msp34xx I2S speed */
+ dev->i2s_speed = 2048000;
break;
case EM2861_BOARD_KWORLD_PVRTV_300U:
case EM2880_BOARD_KWORLD_DVB_305U:
diff -r fd96af63f79b linux/drivers/media/video/em28xx/em28xx-video.c
--- a/linux/drivers/media/video/em28xx/em28xx-video.c Fri Jun 19 19:56:56 2009 +0000
+++ b/linux/drivers/media/video/em28xx/em28xx-video.c Tue Jul 28 19:26:58 2009 -0400
@@ -1123,8 +1123,32 @@ static int vidioc_s_ctrl(struct file *fi
else
rc = 1;
- /* It were not an AC97 control. Sends it to the v4l2 dev interface */
+ /* It we're not an AC97 control. Sends it to the v4l2 dev interface */
if (rc == 1) {
+ /* hack ac97_set_ctrl() call to unmute usb audio for Plextor ConvertX
+ * PX-TV100U
+ *
+ * need to eventually reach em28xx_audio_analog_set()
+ *
+ * and:
+ *****************
+ * xclk = dev->board.xclk & 0x7f;
+ * if (!dev->mute)
+ * xclk |= EM28XX_XCLK_AUDIO_UNMUTE;
+ *
+ * ret = em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk);
+ * if (ret < 0)
+ * return ret;
+ * msleep(10);
+ *****************
+ *
+ * included here as a simple call ac97_set_ctrl() since the path to
+ * em28xx_audio_analog_set() has the necessary conditional checks
+ * which I don't want to bother duplicating, and in case I needed
+ * something else besides unmuting.
+ */
+ ac97_set_ctrl(dev, ctrl);
+
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
/* FIXME: should be returning a meaninful value */
rc = 0;
