ASoC: msm8960: Add the amix control to configure AUX PCM rate
There are use cases that 16kHz sample rate AUX PCM needed
besides 8kHz. Add the amix control so that the AUX PCM
sample rate can be configured by application.
Change-Id: If453283d51cbde14a77b6b40b39643e415fef302
Signed-off-by: Kuirong Wang <kuirongw@codeaurora.org>
diff --git a/sound/soc/msm/msm8960.c b/sound/soc/msm/msm8960.c
index f78f58d..9dfef92 100644
--- a/sound/soc/msm/msm8960.c
+++ b/sound/soc/msm/msm8960.c
@@ -41,8 +41,8 @@
#define msm8960_SLIM_0_RX_MAX_CHANNELS 2
#define msm8960_SLIM_0_TX_MAX_CHANNELS 4
-#define BTSCO_RATE_8KHZ 8000
-#define BTSCO_RATE_16KHZ 16000
+#define SAMPLE_RATE_8KHZ 8000
+#define SAMPLE_RATE_16KHZ 16000
#define BOTTOM_SPK_AMP_POS 0x1
#define BOTTOM_SPK_AMP_NEG 0x2
@@ -70,9 +70,11 @@
static int msm8960_slim_0_rx_ch = 1;
static int msm8960_slim_0_tx_ch = 1;
-static int msm8960_btsco_rate = BTSCO_RATE_8KHZ;
+static int msm8960_btsco_rate = SAMPLE_RATE_8KHZ;
static int msm8960_btsco_ch = 1;
+static int msm8960_auxpcm_rate = SAMPLE_RATE_8KHZ;
+
static struct clk *codec_clk;
static int clk_users;
@@ -512,6 +514,11 @@
SOC_ENUM_SINGLE_EXT(2, btsco_rate_text),
};
+static const char *auxpcm_rate_text[] = {"rate_8000", "rate_16000"};
+static const struct soc_enum msm8960_auxpcm_enum[] = {
+ SOC_ENUM_SINGLE_EXT(2, auxpcm_rate_text),
+};
+
static int msm8960_slim_0_rx_ch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@@ -563,19 +570,49 @@
{
switch (ucontrol->value.integer.value[0]) {
case 0:
- msm8960_btsco_rate = BTSCO_RATE_8KHZ;
+ msm8960_btsco_rate = SAMPLE_RATE_8KHZ;
break;
case 1:
- msm8960_btsco_rate = BTSCO_RATE_16KHZ;
+ msm8960_btsco_rate = SAMPLE_RATE_16KHZ;
break;
default:
- msm8960_btsco_rate = BTSCO_RATE_8KHZ;
+ msm8960_btsco_rate = SAMPLE_RATE_8KHZ;
break;
}
pr_debug("%s: msm8960_btsco_rate = %d\n", __func__, msm8960_btsco_rate);
return 0;
}
+static int msm8960_auxpcm_rate_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ pr_debug("%s: msm8960_auxpcm_rate = %d", __func__,
+ msm8960_auxpcm_rate);
+ ucontrol->value.integer.value[0] = msm8960_auxpcm_rate;
+ return 0;
+}
+
+static int msm8960_auxpcm_rate_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ switch (ucontrol->value.integer.value[0]) {
+ case 0:
+ msm8960_auxpcm_rate = SAMPLE_RATE_8KHZ;
+ break;
+ case 1:
+ msm8960_auxpcm_rate = SAMPLE_RATE_16KHZ;
+ break;
+ default:
+ msm8960_auxpcm_rate = SAMPLE_RATE_8KHZ;
+ break;
+ }
+ pr_debug("%s: msm8960_auxpcm_rate = %d"
+ "ucontrol->value.integer.value[0] = %d\n", __func__,
+ msm8960_auxpcm_rate,
+ (int)ucontrol->value.integer.value[0]);
+ return 0;
+}
+
static const struct snd_kcontrol_new tabla_msm8960_controls[] = {
SOC_ENUM_EXT("Speaker Function", msm8960_enum[0], msm8960_get_spk,
msm8960_set_spk),
@@ -590,6 +627,11 @@
msm8960_btsco_rate_get, msm8960_btsco_rate_put),
};
+static const struct snd_kcontrol_new auxpcm_rate_mixer_controls[] = {
+ SOC_ENUM_EXT("AUX PCM SampleRate", msm8960_auxpcm_enum[0],
+ msm8960_auxpcm_rate_get, msm8960_auxpcm_rate_put),
+};
+
static int msm8960_btsco_init(struct snd_soc_pcm_runtime *rtd)
{
int err = 0;
@@ -603,6 +645,19 @@
return 0;
}
+static int msm8960_auxpcm_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int err = 0;
+ struct snd_soc_platform *platform = rtd->platform;
+
+ err = snd_soc_add_platform_controls(platform,
+ auxpcm_rate_mixer_controls,
+ ARRAY_SIZE(auxpcm_rate_mixer_controls));
+ if (err < 0)
+ return err;
+ return 0;
+}
+
static void *def_tabla_mbhc_cal(void)
{
void *tabla_cal;
@@ -951,8 +1006,8 @@
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
- /* PCM only supports mono output with 8khz sample rate */
- rate->min = rate->max = 8000;
+ rate->min = rate->max = msm8960_auxpcm_rate;
+ /* PCM only supports mono output */
channels->min = channels->max = 1;
return 0;
@@ -1279,6 +1334,7 @@
.platform_name = "msm-pcm-routing",
.codec_name = "msm-stub-codec.1",
.codec_dai_name = "msm-stub-rx",
+ .init = &msm8960_auxpcm_init,
.no_pcm = 1,
.be_id = MSM_BACKEND_DAI_AUXPCM_RX,
.be_hw_params_fixup = msm8960_auxpcm_be_params_fixup,