[PATCH v2 10/10] ASoC: apq8096: add support to Analog audio via WCD9335 slim

Srinivas Kandagatla
2018-07-27T12:20:54Z

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";
--
2.16.2