ASoc: msm: Add 24-bit playback support for MSM8226
Add support for 24-bit playback in MSM8226 machine
driver. This change enables playback of PCM data whose
sample size is 24 bits.
Change-Id: I63966b291978b2816038a37c076626ad57b49ffe
Signed-off-by: Venkat Sudhir <vsudhir@codeaurora.org>
diff --git a/sound/soc/msm/msm8226.c b/sound/soc/msm/msm8226.c
index b512bb5..17e99dd 100644
--- a/sound/soc/msm/msm8226.c
+++ b/sound/soc/msm/msm8226.c
@@ -32,6 +32,10 @@
#include "../codecs/wcd9xxx-common.h"
#include "../codecs/wcd9306.h"
+#define SAMPLING_RATE_48KHZ 48000
+#define SAMPLING_RATE_96KHZ 96000
+#define SAMPLING_RATE_192KHZ 192000
+
#define DRV_NAME "msm8226-asoc-tapan"
#define MSM_SLIM_0_RX_MAX_CHANNELS 2
@@ -154,6 +158,8 @@
static int ext_spk_amp_gpio = -1;
static int vdd_spkr_gpio = -1;
static int msm_proxy_rx_ch = 2;
+
+static int slim0_rx_sample_rate = SAMPLING_RATE_48KHZ;
static int slim0_rx_bit_format = SNDRV_PCM_FORMAT_S16_LE;
static inline int param_is_mask(int p)
@@ -388,6 +394,9 @@
static const char *const slim0_tx_ch_text[] = {"One", "Two", "Three", "Four"};
static const char *const proxy_rx_ch_text[] = {"One", "Two", "Three", "Four",
"Five", "Six", "Seven", "Eight"};
+static char const *rx_bit_format_text[] = {"S16_LE", "S24_LE"};
+static char const *slim0_rx_sample_rate_text[] = {"KHZ_48", "KHZ_96",
+ "KHZ_192"};
static const struct soc_enum msm_enum[] = {
SOC_ENUM_SINGLE_EXT(2, slim0_rx_ch_text),
@@ -399,6 +408,58 @@
SOC_ENUM_SINGLE_EXT(2, btsco_rate_text),
};
+static int slim0_rx_sample_rate_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int sample_rate_val = 0;
+
+ switch (slim0_rx_sample_rate) {
+ case SAMPLING_RATE_192KHZ:
+ sample_rate_val = 2;
+ break;
+
+ case SAMPLING_RATE_96KHZ:
+ sample_rate_val = 1;
+ break;
+
+ case SAMPLING_RATE_48KHZ:
+ default:
+ sample_rate_val = 0;
+ break;
+ }
+
+ ucontrol->value.integer.value[0] = sample_rate_val;
+ pr_debug("%s: slim0_rx_sample_rate = %d\n", __func__,
+ slim0_rx_sample_rate);
+
+ return 0;
+}
+
+static int slim0_rx_sample_rate_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ pr_debug("%s: ucontrol value = %ld\n", __func__,
+ ucontrol->value.integer.value[0]);
+
+ switch (ucontrol->value.integer.value[0]) {
+ case 2:
+ slim0_rx_sample_rate = SAMPLING_RATE_192KHZ;
+ break;
+ case 1:
+ slim0_rx_sample_rate = SAMPLING_RATE_96KHZ;
+ break;
+ case 0:
+ default:
+ slim0_rx_sample_rate = SAMPLING_RATE_48KHZ;
+ break;
+ }
+
+ pr_debug("%s: slim0_rx_sample_rate = %d\n", __func__,
+ slim0_rx_sample_rate);
+
+ return 0;
+}
+
static int msm_slim_0_rx_ch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@@ -725,8 +786,7 @@
pr_debug("%s()\n", __func__);
param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
slim0_rx_bit_format);
-
- rate->min = rate->max = 48000;
+ rate->min = rate->max = slim0_rx_sample_rate;
channels->min = channels->max = msm_slim_0_rx_ch;
return 0;
@@ -780,6 +840,8 @@
SOC_ENUM_SINGLE_EXT(2, slim0_rx_ch_text),
SOC_ENUM_SINGLE_EXT(4, slim0_tx_ch_text),
SOC_ENUM_SINGLE_EXT(8, proxy_rx_ch_text),
+ SOC_ENUM_SINGLE_EXT(2, rx_bit_format_text),
+ SOC_ENUM_SINGLE_EXT(3, slim0_rx_sample_rate_text),
};
static const struct snd_kcontrol_new msm_snd_controls[] = {
@@ -795,7 +857,8 @@
msm_proxy_rx_ch_get, msm_proxy_rx_ch_put),
SOC_ENUM_EXT("SLIM_0_RX Format", msm_snd_enum[3],
slim0_rx_bit_format_get, slim0_rx_bit_format_put),
-
+ SOC_ENUM_EXT("SLIM_0_RX SampleRate", msm_snd_enum[4],
+ slim0_rx_sample_rate_get, slim0_rx_sample_rate_put),
};
static int msm_afe_set_config(struct snd_soc_codec *codec)