This patch adds support Analog audio via WCD9335 Codec connected via SLIMBus. Tested it on DB820c.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/qcom/apq8096.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+)
diff --git a/sound/soc/qcom/apq8096.c b/sound/soc/qcom/apq8096.c index a56156281c8d..b886c18177ef 100644 --- a/sound/soc/qcom/apq8096.c +++ b/sound/soc/qcom/apq8096.c @@ -10,6 +10,72 @@ #include <sound/soc-dapm.h> #include <sound/pcm.h>
+#define SLIM_MAX_TX_PORTS 16 +#define SLIM_MAX_RX_PORTS 16 +#define WCD9335_DEFAULT_MCLK_RATE 9600000 + +static int msm_snd_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + u32 rx_ch[SLIM_MAX_RX_PORTS], tx_ch[SLIM_MAX_TX_PORTS]; + u32 rx_ch_cnt = 0, tx_ch_cnt = 0; + int ret = 0; + + ret = snd_soc_dai_get_channel_map(codec_dai, + &tx_ch_cnt, tx_ch, &rx_ch_cnt, rx_ch); + if (ret != 0 && ret != -ENOTSUPP) { + pr_err("failed to get codec chan map, err:%d\n", ret); + goto end; + } else if (ret == -ENOTSUPP) { + return 0; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL, + rx_ch_cnt, rx_ch); + else + ret = snd_soc_dai_set_channel_map(cpu_dai, tx_ch_cnt, tx_ch, + 0, NULL); + if (ret != 0 && ret != -ENOTSUPP) + pr_err("Failed to set cpu chan map, err:%d\n", ret); + else if (ret == -ENOTSUPP) + ret = 0; +end: + return ret; +} + +static struct snd_soc_ops apq8096_ops = { + .hw_params = msm_snd_hw_params, +}; + +static int apq8096_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *codec_dai = rtd->codec_dai; + + /* + * Codec SLIMBUS configuration + * RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8, RX9, RX10, RX11, RX12, RX13 + * TX1, TX2, TX3, TX4, TX5, TX6, TX7, TX8, TX9, TX10, TX11, TX12, TX13 + * TX14, TX15, TX16 + */ + unsigned int rx_ch[SLIM_MAX_RX_PORTS] = {144, 145, 146, 147, 148, 149, + 150, 151, 152, 153, 154, 155, 156}; + unsigned int tx_ch[SLIM_MAX_TX_PORTS] = {128, 129, 130, 131, 132, 133, + 134, 135, 136, 137, 138, 139, + 140, 141, 142, 143}; + + snd_soc_dai_set_channel_map(codec_dai, ARRAY_SIZE(tx_ch), + tx_ch, ARRAY_SIZE(rx_ch), rx_ch); + + snd_soc_dai_set_sysclk(codec_dai, 0, 9600000, + SNDRV_PCM_STREAM_PLAYBACK); + + return 0; +} + static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) { @@ -100,6 +166,8 @@ static int apq8096_sbc_parse_of(struct snd_soc_card *card) link->no_pcm = 1; link->ignore_pmdown_time = 1; link->be_hw_params_fixup = apq8096_be_hw_params_fixup; + link->init = apq8096_init; + link->ops = &apq8096_ops; } else { link->platform_of_node = link->cpu_of_node; link->codec_dai_name = "snd-soc-dummy-dai";