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-rw-r--r--Documentation/sound/alsa/soc/codec.txt45
1 files changed, 21 insertions, 24 deletions
diff --git a/Documentation/sound/alsa/soc/codec.txt b/Documentation/sound/alsa/soc/codec.txt
index 37ba3a72cb7..bce23a4a787 100644
--- a/Documentation/sound/alsa/soc/codec.txt
+++ b/Documentation/sound/alsa/soc/codec.txt
@@ -27,42 +27,38 @@ ASoC Codec driver breakdown
27 27
281 - Codec DAI and PCM configuration 281 - Codec DAI and PCM configuration
29----------------------------------- 29-----------------------------------
30Each codec driver must have a struct snd_soc_codec_dai to define its DAI and 30Each codec driver must have a struct snd_soc_dai_driver to define its DAI and
31PCM capabilities and operations. This struct is exported so that it can be 31PCM capabilities and operations. This struct is exported so that it can be
32registered with the core by your machine driver. 32registered with the core by your machine driver.
33 33
34e.g. 34e.g.
35 35
36struct snd_soc_codec_dai wm8731_dai = { 36static struct snd_soc_dai_ops wm8731_dai_ops = {
37 .name = "WM8731", 37 .prepare = wm8731_pcm_prepare,
38 /* playback capabilities */ 38 .hw_params = wm8731_hw_params,
39 .shutdown = wm8731_shutdown,
40 .digital_mute = wm8731_mute,
41 .set_sysclk = wm8731_set_dai_sysclk,
42 .set_fmt = wm8731_set_dai_fmt,
43};
44
45struct snd_soc_dai_driver wm8731_dai = {
46 .name = "wm8731-hifi",
39 .playback = { 47 .playback = {
40 .stream_name = "Playback", 48 .stream_name = "Playback",
41 .channels_min = 1, 49 .channels_min = 1,
42 .channels_max = 2, 50 .channels_max = 2,
43 .rates = WM8731_RATES, 51 .rates = WM8731_RATES,
44 .formats = WM8731_FORMATS,}, 52 .formats = WM8731_FORMATS,},
45 /* capture capabilities */
46 .capture = { 53 .capture = {
47 .stream_name = "Capture", 54 .stream_name = "Capture",
48 .channels_min = 1, 55 .channels_min = 1,
49 .channels_max = 2, 56 .channels_max = 2,
50 .rates = WM8731_RATES, 57 .rates = WM8731_RATES,
51 .formats = WM8731_FORMATS,}, 58 .formats = WM8731_FORMATS,},
52 /* pcm operations - see section 4 below */ 59 .ops = &wm8731_dai_ops,
53 .ops = { 60 .symmetric_rates = 1,
54 .prepare = wm8731_pcm_prepare,
55 .hw_params = wm8731_hw_params,
56 .shutdown = wm8731_shutdown,
57 },
58 /* DAI operations - see DAI.txt */
59 .dai_ops = {
60 .digital_mute = wm8731_mute,
61 .set_sysclk = wm8731_set_dai_sysclk,
62 .set_fmt = wm8731_set_dai_fmt,
63 }
64}; 61};
65EXPORT_SYMBOL_GPL(wm8731_dai);
66 62
67 63
682 - Codec control IO 642 - Codec control IO
@@ -186,13 +182,14 @@ when the mute is applied or freed.
186 182
187i.e. 183i.e.
188 184
189static int wm8974_mute(struct snd_soc_codec *codec, 185static int wm8974_mute(struct snd_soc_dai *dai, int mute)
190 struct snd_soc_codec_dai *dai, int mute)
191{ 186{
192 u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; 187 struct snd_soc_codec *codec = dai->codec;
193 if(mute) 188 u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf;
194 wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); 189
190 if (mute)
191 snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40);
195 else 192 else
196 wm8974_write(codec, WM8974_DAC, mute_reg); 193 snd_soc_write(codec, WM8974_DAC, mute_reg);
197 return 0; 194 return 0;
198} 195}