From e879b8ebb000298f8124fc8fae570afc9eb37cbb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Nov 2008 13:39:39 -0300 Subject: V4L/DVB (9672): Allow opening more than one output at the same time Some devices use more than one AC97 outputs. This patch allows such devices to properly work. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/em28xx-core.c | 33 +++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) (limited to 'drivers/media/video/em28xx/em28xx-core.c') diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index cb60864..413428a 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -304,12 +304,12 @@ static int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val) return 0; } -struct em28xx_input_table { - enum em28xx_amux amux; +struct em28xx_vol_table { + enum em28xx_amux mux; u8 reg; }; -static struct em28xx_input_table inputs[] = { +static struct em28xx_vol_table inputs[] = { { EM28XX_AMUX_VIDEO, AC97_VIDEO_VOL }, { EM28XX_AMUX_LINE_IN, AC97_LINEIN_VOL }, { EM28XX_AMUX_PHONE, AC97_PHONE_VOL }, @@ -332,7 +332,7 @@ static int set_ac97_input(struct em28xx *dev) /* Mute all entres but the one that were selected */ for (i = 0; i < ARRAY_SIZE(inputs); i++) { - if (amux == inputs[i].amux) + if (amux == inputs[i].mux) ret = em28xx_write_ac97(dev, inputs[i].reg, 0x0808); else ret = em28xx_write_ac97(dev, inputs[i].reg, 0x8000); @@ -388,12 +388,12 @@ static int em28xx_set_audio_source(struct em28xx *dev) return ret; } -static int outputs[] = { - [EM28XX_AOUT_MASTER] = AC97_MASTER_VOL, - [EM28XX_AOUT_LINE] = AC97_LINE_LEVEL_VOL, - [EM28XX_AOUT_MONO] = AC97_MASTER_MONO_VOL, - [EM28XX_AOUT_LFE] = AC97_LFE_MASTER_VOL, - [EM28XX_AOUT_SURR] = AC97_SURR_MASTER_VOL, +struct em28xx_vol_table outputs[] = { + { EM28XX_AOUT_MASTER, AC97_MASTER_VOL }, + { EM28XX_AOUT_LINE, AC97_LINE_LEVEL_VOL }, + { EM28XX_AOUT_MONO, AC97_MASTER_MONO_VOL }, + { EM28XX_AOUT_LFE, AC97_LFE_MASTER_VOL }, + { EM28XX_AOUT_SURR, AC97_SURR_MASTER_VOL }, }; int em28xx_audio_analog_set(struct em28xx *dev) @@ -410,10 +410,10 @@ int em28xx_audio_analog_set(struct em28xx *dev) if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { /* Mute all outputs */ for (i = 0; i < ARRAY_SIZE(outputs); i++) { - ret = em28xx_write_ac97(dev, outputs[i], 0x8000); + ret = em28xx_write_ac97(dev, outputs[i].reg, 0x8000); if (ret < 0) em28xx_warn("couldn't setup AC97 register %d\n", - outputs[i]); + outputs[i].reg); } } @@ -443,7 +443,14 @@ int em28xx_audio_analog_set(struct em28xx *dev) vol |= 0x8000; /* Sets volume */ - ret = em28xx_write_ac97(dev, outputs[dev->ctl_aoutput], vol); + for (i = 0; i < ARRAY_SIZE(outputs); i++) { + if (dev->ctl_aoutput & outputs[i].mux) + ret = em28xx_write_ac97(dev, outputs[i].reg, + vol); + if (ret < 0) + em28xx_warn("couldn't setup AC97 register %d\n", + outputs[i].reg); + } } return ret; -- cgit v1.1