diff options
Diffstat (limited to 'sound/soc/ux500/mop500_ab8500.c')
| -rw-r--r-- | sound/soc/ux500/mop500_ab8500.c | 62 |
1 files changed, 44 insertions, 18 deletions
diff --git a/sound/soc/ux500/mop500_ab8500.c b/sound/soc/ux500/mop500_ab8500.c index 892ad9a05c9..7e923ecf890 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", |