[alsa-devel] [RFC v1 6/9] ASoC: msm8x16: add codec dais
Srinivas Kandagatla
srinivas.kandagatla at linaro.org
Tue Feb 16 18:33:10 CET 2016
This patch adds two codec DAI's one Playback and other capture on the
i2s bus.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
include/dt-bindings/sound/msm8x16-wcd.h | 7 ++
sound/soc/codecs/msm8x16-wcd.c | 180 ++++++++++++++++++++++++++++++++
2 files changed, 187 insertions(+)
create mode 100644 include/dt-bindings/sound/msm8x16-wcd.h
diff --git a/include/dt-bindings/sound/msm8x16-wcd.h b/include/dt-bindings/sound/msm8x16-wcd.h
new file mode 100644
index 0000000..f3257ab
--- /dev/null
+++ b/include/dt-bindings/sound/msm8x16-wcd.h
@@ -0,0 +1,7 @@
+#ifndef __DT_MSM8x16_WCD_H
+#define __DT_MSM8x16_WCD_H
+
+#define MSM8x16_WCD_PLAYBACK_DAI 0
+#define MSM8x16_WCD_CAPTURE_DAI 1
+
+#endif /* __DT_MSM8x16_WCD_H */
diff --git a/sound/soc/codecs/msm8x16-wcd.c b/sound/soc/codecs/msm8x16-wcd.c
index bc8b38a..4bc8274 100644
--- a/sound/soc/codecs/msm8x16-wcd.c
+++ b/sound/soc/codecs/msm8x16-wcd.c
@@ -11,9 +11,17 @@
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
#include "msm8x16-wcd-registers.h"
#include "msm8x16-wcd.h"
+#include "dt-bindings/sound/msm8x16-wcd.h"
+
+#define MSM8X16_WCD_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
+ SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000)
+#define MSM8X16_WCD_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S24_LE)
/* Cap mode for micbias */
#define MICBIAS_EXT_BYP_CAP 0x00
@@ -282,6 +290,19 @@ static const struct msm8x16_wcd_reg_mask_val
{MSM8X16_WCD_A_ANALOG_RX_COM_OCP_COUNT, 0xFF, 0xFF},
};
+static int msm8x16_wcd_set_interpolator_rate(struct snd_soc_dai *dai,
+ u8 rx_fs_rate_reg_val, u32 sample_rate)
+{
+ return 0;
+}
+
+static int msm8x16_wcd_set_decimator_rate(struct snd_soc_dai *dai,
+ u8 tx_fs_rate_reg_val, u32 sample_rate)
+{
+
+ return 0;
+}
+
static int msm8x16_wcd_device_up(struct snd_soc_codec *codec)
{
struct msm8x16_wcd_chip *msm8x16_wcd = snd_soc_codec_get_drvdata(codec);
@@ -360,7 +381,166 @@ static int msm8x16_wcd_codec_remove(struct snd_soc_codec *codec)
return 0;
};
+static int msm8x16_wcd_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ return 0;
+}
+
+static void msm8x16_wcd_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+}
+
+static int msm8x16_wcd_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ u8 tx_fs_rate, rx_fs_rate;
+ int ret;
+
+ switch (params_rate(params)) {
+ case 8000:
+ tx_fs_rate = 0x00;
+ rx_fs_rate = 0x00;
+ break;
+ case 16000:
+ tx_fs_rate = 0x01;
+ rx_fs_rate = 0x20;
+ break;
+ case 32000:
+ tx_fs_rate = 0x02;
+ rx_fs_rate = 0x40;
+ break;
+ case 48000:
+ tx_fs_rate = 0x03;
+ rx_fs_rate = 0x60;
+ break;
+ case 96000:
+ tx_fs_rate = 0x04;
+ rx_fs_rate = 0x80;
+ break;
+ case 192000:
+ tx_fs_rate = 0x05;
+ rx_fs_rate = 0xA0;
+ break;
+ default:
+ dev_err(dai->codec->dev,
+ "%s: Invalid sampling rate %d\n", __func__,
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ switch (substream->stream) {
+ case SNDRV_PCM_STREAM_CAPTURE:
+ snd_soc_update_bits(dai->codec,
+ MSM8X16_WCD_A_CDC_CLK_TX_I2S_CTL,
+ 0x07, tx_fs_rate);
+ ret = msm8x16_wcd_set_decimator_rate(dai, tx_fs_rate,
+ params_rate(params));
+ if (ret < 0) {
+ dev_err(dai->codec->dev,
+ "%s: set decimator rate failed %d\n", __func__,
+ ret);
+ return ret;
+ }
+ break;
+ case SNDRV_PCM_STREAM_PLAYBACK:
+ ret = msm8x16_wcd_set_interpolator_rate(dai, rx_fs_rate,
+ params_rate(params));
+ if (ret < 0) {
+ dev_err(dai->codec->dev,
+ "%s: set decimator rate failed %d\n", __func__,
+ ret);
+ return ret;
+ }
+ break;
+ default:
+ dev_err(dai->codec->dev,
+ "%s: Invalid stream type %d\n", __func__,
+ substream->stream);
+ return -EINVAL;
+ }
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ snd_soc_update_bits(dai->codec,
+ MSM8X16_WCD_A_CDC_CLK_TX_I2S_CTL, 0x20, 0x20);
+ snd_soc_update_bits(dai->codec,
+ MSM8X16_WCD_A_CDC_CLK_RX_I2S_CTL, 0x20, 0x20);
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ snd_soc_update_bits(dai->codec,
+ MSM8X16_WCD_A_CDC_CLK_TX_I2S_CTL, 0x20, 0x00);
+ snd_soc_update_bits(dai->codec,
+ MSM8X16_WCD_A_CDC_CLK_RX_I2S_CTL, 0x20, 0x00);
+ break;
+ default:
+ dev_err(dai->dev, "%s: wrong format selected\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int msm8x16_wcd_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ return 0;
+}
+
+static int msm8x16_wcd_set_channel_map(struct snd_soc_dai *dai,
+ unsigned int tx_num, unsigned int *tx_slot,
+ unsigned int rx_num, unsigned int *rx_slot)
+
+{
+ return 0;
+}
+
+static int msm8x16_wcd_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ return 0;
+}
+
+static struct snd_soc_dai_ops msm8x16_wcd_dai_ops = {
+ .startup = msm8x16_wcd_startup,
+ .shutdown = msm8x16_wcd_shutdown,
+ .hw_params = msm8x16_wcd_hw_params,
+ .set_sysclk = msm8x16_wcd_set_dai_sysclk,
+ .set_fmt = msm8x16_wcd_set_dai_fmt,
+ .set_channel_map = msm8x16_wcd_set_channel_map,
+};
+
static struct snd_soc_dai_driver msm8x16_wcd_codec_dai[] = {
+ [0] = {
+ .name = "msm8x16_wcd_i2s_rx1",
+ .id = MSM8x16_WCD_PLAYBACK_DAI,
+ .playback = {
+ .stream_name = "AIF1 Playback",
+ .rates = MSM8X16_WCD_RATES,
+ .formats = MSM8X16_WCD_FORMATS,
+ .rate_max = 192000,
+ .rate_min = 8000,
+ .channels_min = 1,
+ .channels_max = 3,
+ },
+ .ops = &msm8x16_wcd_dai_ops,
+ },
+ [1] = {
+ .name = "msm8x16_wcd_i2s_tx1",
+ .id = MSM8x16_WCD_CAPTURE_DAI,
+ .capture = {
+ .stream_name = "AIF1 Capture",
+ .rates = MSM8X16_WCD_RATES,
+ .formats = MSM8X16_WCD_FORMATS,
+ .rate_max = 192000,
+ .rate_min = 8000,
+ .channels_min = 1,
+ .channels_max = 4,
+ },
+ .ops = &msm8x16_wcd_dai_ops,
+ },
};
static struct snd_soc_codec_driver msm8x16_wcd_codec = {
--
1.9.1
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