diff options
| author |   Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-12-07 17:14:56 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-12-08 13:56:31 +0000 |
| commit | b1e43d933a3f1183e15d91b1737ecafb7de153eb (patch) | |
| tree | 43c34da2e2a31375d59fcb892b40cad3b5d03595 /sound/soc/codecs/wm8994.c | |
| parent | ASoC: soc-core: Fix null pointer dereference (diff) | |
| download | linux-dev-b1e43d933a3f1183e15d91b1737ecafb7de153eb.tar.xz linux-dev-b1e43d933a3f1183e15d91b1737ecafb7de153eb.zip | |
ASoC: Support WM8994 mono AIF configurations
The WM8994 supports mono signals - enable this in the driver. With DSP
mode an automatic data channel selector is available, activate this
when in mono mode.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/codecs/wm8994.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index b37e95c4e7c7..997fd178563f 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -2099,10 +2099,12 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream, struct wm8994 *control = codec->control_data; struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); int aif1_reg; + int aif2_reg; int bclk_reg; int lrclk_reg; int rate_reg; int aif1 = 0; + int aif2 = 0; int bclk = 0; int lrclk = 0; int rate_val = 0; @@ -2113,6 +2115,7 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream, switch (dai->id) { case 1: aif1_reg = WM8994_AIF1_CONTROL_1; + aif2_reg = WM8994_AIF1_CONTROL_2; bclk_reg = WM8994_AIF1_BCLK; rate_reg = WM8994_AIF1_RATE; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK || @@ -2125,6 +2128,7 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream, break; case 2: aif1_reg = WM8994_AIF2_CONTROL_1; + aif2_reg = WM8994_AIF2_CONTROL_2; bclk_reg = WM8994_AIF2_BCLK; rate_reg = WM8994_AIF2_RATE; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK || @@ -2180,6 +2184,10 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream, dev_dbg(dai->dev, "AIF%dCLK is %dHz, target BCLK %dHz\n", dai->id, wm8994->aifclk[id], bclk_rate); + if (params_channels(params) == 1 && + (snd_soc_read(codec, aif1_reg) & 0x18) == 0x18) + aif2 |= WM8994_AIF1_MONO; + if (wm8994->aifclk[id] == 0) { dev_err(dai->dev, "AIF%dCLK not configured\n", dai->id); return -EINVAL; @@ -2223,6 +2231,7 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream, lrclk, bclk_rate / lrclk); snd_soc_update_bits(codec, aif1_reg, WM8994_AIF1_WL_MASK, aif1); + snd_soc_update_bits(codec, aif2_reg, WM8994_AIF1_MONO, aif2); snd_soc_update_bits(codec, bclk_reg, WM8994_AIF1_BCLK_DIV_MASK, bclk); snd_soc_update_bits(codec, lrclk_reg, WM8994_AIF1DAC_RATE_MASK, lrclk); @@ -2378,14 +2387,14 @@ static struct snd_soc_dai_driver wm8994_dai[] = { .id = 1, .playback = { .stream_name = "AIF1 Playback", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, }, .capture = { .stream_name = "AIF1 Capture", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, @@ -2397,14 +2406,14 @@ static struct snd_soc_dai_driver wm8994_dai[] = { .id = 2, .playback = { .stream_name = "AIF2 Playback", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, }, .capture = { .stream_name = "AIF2 Capture", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, @@ -2416,14 +2425,14 @@ static struct snd_soc_dai_driver wm8994_dai[] = { .id = 3, .playback = { .stream_name = "AIF3 Playback", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, }, .capture = { .stream_name = "AIF3 Capture", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = WM8994_RATES, .formats = WM8994_FORMATS, |