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Diffstat (limited to 'sound/soc/ux500/mop500_ab8500.c')
-rw-r--r--sound/soc/ux500/mop500_ab8500.c62
1 files changed, 44 insertions, 18 deletions
diff --git a/sound/soc/ux500/mop500_ab8500.c b/sound/soc/ux500/mop500_ab8500.c
index 892ad9a05c9f..7e923ecf8901 100644
--- a/sound/soc/ux500/mop500_ab8500.c
+++ b/sound/soc/ux500/mop500_ab8500.c
@@ -16,6 +16,7 @@
#include <linux/device.h>
#include <linux/io.h>
#include <linux/clk.h>
+#include <linux/mutex.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
@@ -24,6 +25,7 @@
#include "ux500_pcm.h"
#include "ux500_msp_dai.h"
+#include "mop500_ab8500.h"
#include "../codecs/ab8500-codec.h"
#define TX_SLOT_MONO 0x0008
@@ -43,6 +45,12 @@
static unsigned int tx_slots = DEF_TX_SLOTS;
static unsigned int rx_slots = DEF_RX_SLOTS;
+/* Configuration consistency parameters */
+static DEFINE_MUTEX(mop500_ab8500_params_lock);
+static unsigned long mop500_ab8500_usage;
+static int mop500_ab8500_rate;
+static int mop500_ab8500_channels;
+
/* Clocks */
static const char * const enum_mclk[] = {
"SYSCLK",
@@ -125,9 +133,9 @@ static int mop500_ab8500_set_mclk(struct device *dev,
static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mop500_ab8500_drvdata *drvdata =
- snd_soc_card_get_drvdata(codec->card);
+ snd_soc_card_get_drvdata(card);
ucontrol->value.enumerated.item[0] = drvdata->mclk_sel;
@@ -137,9 +145,9 @@ static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
static int mclk_input_control_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mop500_ab8500_drvdata *drvdata =
- snd_soc_card_get_drvdata(codec->card);
+ snd_soc_card_get_drvdata(card);
unsigned int val = ucontrol->value.enumerated.item[0];
if (val > (unsigned int)MCLK_ULPCLK)
@@ -160,16 +168,6 @@ static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
SOC_ENUM_EXT("Master Clock Select",
soc_enum_mclk,
mclk_input_control_get, mclk_input_control_put),
- /* Digital interface - Clocks */
- SOC_SINGLE("Digital Interface Master Generator Switch",
- AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENMASTGEN,
- 1, 0),
- SOC_SINGLE("Digital Interface 0 Bit-clock Switch",
- AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENFSBITCLK0,
- 1, 0),
- SOC_SINGLE("Digital Interface 1 Bit-clock Switch",
- AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENFSBITCLK1,
- 1, 0),
SOC_DAPM_PIN_SWITCH("Headset Left"),
SOC_DAPM_PIN_SWITCH("Headset Right"),
SOC_DAPM_PIN_SWITCH("Earpiece"),
@@ -193,7 +191,7 @@ static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
/* ASoC */
-int mop500_ab8500_startup(struct snd_pcm_substream *substream)
+static int mop500_ab8500_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -202,7 +200,7 @@ int mop500_ab8500_startup(struct snd_pcm_substream *substream)
snd_soc_card_get_drvdata(rtd->card));
}
-void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
+static void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct device *dev = rtd->card->dev;
@@ -216,7 +214,7 @@ void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
rx_slots = DEF_RX_SLOTS;
}
-int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
+static int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -240,6 +238,21 @@ int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
substream->name,
substream->number);
+ /* Ensure configuration consistency between DAIs */
+ mutex_lock(&mop500_ab8500_params_lock);
+ if (mop500_ab8500_usage) {
+ if (mop500_ab8500_rate != params_rate(params) ||
+ mop500_ab8500_channels != params_channels(params)) {
+ mutex_unlock(&mop500_ab8500_params_lock);
+ return -EBUSY;
+ }
+ } else {
+ mop500_ab8500_rate = params_rate(params);
+ mop500_ab8500_channels = params_channels(params);
+ }
+ __set_bit(cpu_dai->id, &mop500_ab8500_usage);
+ mutex_unlock(&mop500_ab8500_params_lock);
+
channels = params_channels(params);
switch (params_format(params)) {
@@ -338,9 +351,22 @@ int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
return 0;
}
+static int mop500_ab8500_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ mutex_lock(&mop500_ab8500_params_lock);
+ __clear_bit(cpu_dai->id, &mop500_ab8500_usage);
+ mutex_unlock(&mop500_ab8500_params_lock);
+
+ return 0;
+}
+
struct snd_soc_ops mop500_ab8500_ops[] = {
{
.hw_params = mop500_ab8500_hw_params,
+ .hw_free = mop500_ab8500_hw_free,
.startup = mop500_ab8500_startup,
.shutdown = mop500_ab8500_shutdown,
}
@@ -385,7 +411,7 @@ int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
drvdata->mclk_sel = MCLK_ULPCLK;
/* Add controls */
- ret = snd_soc_add_codec_controls(codec, mop500_ab8500_ctrls,
+ ret = snd_soc_add_card_controls(codec->card, mop500_ab8500_ctrls,
ARRAY_SIZE(mop500_ab8500_ctrls));
if (ret < 0) {
pr_err("%s: Failed to add machine-controls (%d)!\n",