[alsa-devel] [PATCH v3 7/9] ASoC: Codec: Add sti platform codec
Arnaud Pouliquen
arnaud.pouliquen at st.com
Mon Jun 22 16:31:11 CEST 2015
Codec part of the sti platform that supports codec IPs.
This first version does not support HDMI, but only DAC and SPDIF out.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
---
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/sti-sas.c | 627 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 634 insertions(+)
create mode 100644 sound/soc/codecs/sti-sas.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 186fe7f..7434a20 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -102,6 +102,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_STA350 if I2C
select SND_SOC_STA529 if I2C
select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
+ select SND_SOC_STI_SAS
select SND_SOC_TAS2552 if I2C
select SND_SOC_TAS5086 if I2C
select SND_SOC_TAS571X if I2C
@@ -604,6 +605,10 @@ config SND_SOC_STA529
config SND_SOC_STAC9766
tristate
+config SND_SOC_STI_SAS
+ tristate "codec Audio support for STI SAS codec"
+ depends on SND_SOC_STI
+
config SND_SOC_TAS2552
tristate "Texas Instruments TAS2552 Mono Audio amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 3dcf5ac..1744e22 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -105,6 +105,7 @@ snd-soc-sta32x-objs := sta32x.o
snd-soc-sta350-objs := sta350.o
snd-soc-sta529-objs := sta529.o
snd-soc-stac9766-objs := stac9766.o
+snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tfa9879-objs := tfa9879.o
@@ -287,6 +288,7 @@ obj-$(CONFIG_SND_SOC_STA32X) += snd-soc-sta32x.o
obj-$(CONFIG_SND_SOC_STA350) += snd-soc-sta350.o
obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
+obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o
obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
diff --git a/sound/soc/codecs/sti-sas.c b/sound/soc/codecs/sti-sas.c
new file mode 100644
index 0000000..32db2c2
--- /dev/null
+++ b/sound/soc/codecs/sti-sas.c
@@ -0,0 +1,627 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2015
+ * Authors: Arnaud Pouliquen <arnaud.pouliquen at st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <linux/mfd/syscon.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+/* chipID supported */
+#define CHIPID_STIH416 0
+#define CHIPID_STIH407 1
+
+/* DAC definitions */
+
+/* stih416 DAC registers */
+/* sysconf 2517: Audio-DAC-Control */
+#define STIH416_AUDIO_DAC_CTRL 0x00000814
+/* sysconf 2519: Audio-Gue-Control */
+#define STIH416_AUDIO_GLUE_CTRL 0x0000081C
+
+#define STIH416_DAC_NOT_STANDBY 0x3
+#define STIH416_DAC_SOFTMUTE 0x4
+#define STIH416_DAC_ANA_NOT_PWR 0x5
+#define STIH416_DAC_NOT_PNDBG 0x6
+
+#define STIH416_DAC_NOT_STANDBY_MASK BIT(STIH416_DAC_NOT_STANDBY)
+#define STIH416_DAC_SOFTMUTE_MASK BIT(STIH416_DAC_SOFTMUTE)
+#define STIH416_DAC_ANA_NOT_PWR_MASK BIT(STIH416_DAC_ANA_NOT_PWR)
+#define STIH416_DAC_NOT_PNDBG_MASK BIT(STIH416_DAC_NOT_PNDBG)
+
+/* stih407 DAC registers */
+/* sysconf 5041: Audio-Gue-Control */
+#define STIH407_AUDIO_GLUE_CTRL 0x000000A4
+/* sysconf 5042: Audio-DAC-Control */
+#define STIH407_AUDIO_DAC_CTRL 0x000000A8
+
+/* DAC definitions */
+#define STIH407_DAC_SOFTMUTE 0x0
+#define STIH407_DAC_STANDBY_ANA 0x1
+#define STIH407_DAC_STANDBY 0x2
+
+#define STIH407_DAC_SOFTMUTE_MASK BIT(STIH407_DAC_SOFTMUTE)
+#define STIH407_DAC_STANDBY_ANA_MASK BIT(STIH407_DAC_STANDBY_ANA)
+#define STIH407_DAC_STANDBY_MASK BIT(STIH407_DAC_STANDBY)
+
+/* SPDIF definitions */
+#define SPDIF_BIPHASE_ENABLE 0x6
+#define SPDIF_BIPHASE_IDLE 0x7
+
+#define SPDIF_BIPHASE_ENABLE_MASK BIT(SPDIF_BIPHASE_ENABLE)
+#define SPDIF_BIPHASE_IDLE_MASK BIT(SPDIF_BIPHASE_IDLE)
+
+enum {
+ STI_SAS_DAI_SPDIF_OUT,
+ STI_SAS_DAI_ANALOG_OUT,
+};
+
+static const struct reg_default stih416_sas_reg_defaults[] = {
+ { STIH407_AUDIO_GLUE_CTRL, 0x00000040 },
+ { STIH407_AUDIO_DAC_CTRL, 0x000000000 },
+};
+
+static const struct reg_default stih407_sas_reg_defaults[] = {
+ { STIH416_AUDIO_DAC_CTRL, 0x000000000 },
+ { STIH416_AUDIO_GLUE_CTRL, 0x00000040 },
+};
+
+struct sti_dac_audio {
+ struct regmap *regmap;
+ struct regmap *virt_regmap;
+ struct regmap_field **field;
+ struct reset_control *rst;
+ int mclk;
+};
+
+struct sti_spdif_audio {
+ struct regmap *regmap;
+ struct regmap_field **field;
+ int mclk;
+};
+
+/* device data structure */
+struct sti_sas_dev_data {
+ const int chipid; /* IC version */
+ const struct regmap_config *regmap;
+ const struct snd_soc_dai_ops *dac_ops; /* DAC function callbacks */
+ const struct snd_soc_dapm_widget *dapm_widgets; /* dapms declaration */
+ const int num_dapm_widgets; /* dapms declaration */
+ const struct snd_soc_dapm_route *dapm_routes; /* route declaration */
+ const int num_dapm_routes; /* route declaration */
+};
+
+/* driver data structure */
+struct sti_sas_data {
+ struct device *dev;
+ const struct sti_sas_dev_data *dev_data;
+ struct sti_dac_audio dac;
+ struct sti_spdif_audio spdif;
+};
+
+/* Read a register from the sysconf reg bank */
+static int sti_sas_read_reg(void *context, unsigned int reg,
+ unsigned int *value)
+{
+ struct sti_sas_data *drvdata = context;
+ int status;
+ u32 val;
+
+ status = regmap_read(drvdata->dac.regmap, reg, &val);
+ *value = (unsigned int)val;
+
+ return status;
+}
+
+/* Read a register from the sysconf reg bank */
+static int sti_sas_write_reg(void *context, unsigned int reg,
+ unsigned int value)
+{
+ struct sti_sas_data *drvdata = context;
+ int status;
+
+ status = regmap_write(drvdata->dac.regmap, reg, value);
+
+ return status;
+}
+
+static int sti_sas_init_sas_registers(struct snd_soc_codec *codec,
+ struct sti_sas_data *data)
+{
+ int ret;
+ /*
+ * DAC and SPDIF are activated by default
+ * put them in IDLE to save power
+ */
+
+ /* Initialise bi-phase formatter to disabled */
+ ret = snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
+ SPDIF_BIPHASE_ENABLE_MASK, 0);
+
+ if (!ret)
+ /* Initialise bi-phase formatter idle value to 0 */
+ ret = snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
+ SPDIF_BIPHASE_IDLE_MASK, 0);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to update SPDIF registers");
+ return ret;
+ }
+
+ /* Init DAC configuration */
+ switch (data->dev_data->chipid) {
+ case CHIPID_STIH407:
+ /* init configuration */
+ ret = snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_STANDBY_MASK,
+ STIH407_DAC_STANDBY_MASK);
+
+ if (!ret)
+ ret = snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_STANDBY_ANA_MASK,
+ STIH407_DAC_STANDBY_ANA_MASK);
+ if (!ret)
+ ret = snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_SOFTMUTE_MASK,
+ STIH407_DAC_SOFTMUTE_MASK);
+ break;
+ case CHIPID_STIH416:
+ ret = snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_NOT_STANDBY_MASK, 0);
+ if (!ret)
+ ret = snd_soc_update_bits(codec,
+ STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_ANA_NOT_PWR, 0);
+ if (!ret)
+ ret = snd_soc_update_bits(codec,
+ STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_NOT_PNDBG_MASK,
+ 0);
+ if (!ret)
+ ret = snd_soc_update_bits(codec,
+ STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_SOFTMUTE_MASK,
+ STIH416_DAC_SOFTMUTE_MASK);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to update DAC registers");
+ return ret;
+ }
+
+ return ret;
+}
+
+/*
+ * DAC
+ */
+static int sti_sas_dac_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ /* Sanity check only */
+ if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
+ dev_err(dai->codec->dev,
+ "%s: ERROR: Unsupporter master mask 0x%x\n",
+ __func__, fmt & SND_SOC_DAIFMT_MASTER_MASK);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int stih416_dac_probe(struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
+ struct sti_dac_audio *dac = &drvdata->dac;
+
+ /* Get reset control */
+ dac->rst = devm_reset_control_get(codec->dev, "dac_rst");
+ if (IS_ERR(dac->rst)) {
+ dev_err(dai->codec->dev,
+ "%s: ERROR: DAC reset control not defined (%d)!\n",
+ __func__, (int)dac->rst);
+ dac->rst = NULL;
+ return -EFAULT;
+ }
+ /* Put the DAC into reset */
+ reset_control_assert(dac->rst);
+
+ return 0;
+}
+
+const struct snd_soc_dapm_widget stih416_sas_dapm_widgets[] = {
+ SND_SOC_DAPM_PGA("DAC bandgap", STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_NOT_PNDBG_MASK, 0, NULL, 0),
+ SND_SOC_DAPM_OUT_DRV("DAC standby ana", STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_ANA_NOT_PWR, 0, NULL, 0),
+ SND_SOC_DAPM_DAC("DAC standby", "dac_p", STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_NOT_STANDBY, 0),
+ SND_SOC_DAPM_OUTPUT("DAC Output"),
+};
+
+const struct snd_soc_dapm_widget stih407_sas_dapm_widgets[] = {
+ SND_SOC_DAPM_OUT_DRV("DAC standby ana", STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_STANDBY_ANA, 1, NULL, 0),
+ SND_SOC_DAPM_DAC("DAC standby", "dac_p", STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_STANDBY, 1),
+ SND_SOC_DAPM_OUTPUT("DAC Output"),
+};
+
+const struct snd_soc_dapm_route stih416_sas_route[] = {
+ {"DAC Output", NULL, "DAC bandgap"},
+ {"DAC Output", NULL, "DAC standby ana"},
+ {"DAC standby ana", NULL, "DAC standby"},
+};
+
+const struct snd_soc_dapm_route stih407_sas_route[] = {
+ {"DAC Output", NULL, "DAC standby ana"},
+ {"DAC standby ana", NULL, "DAC standby"},
+};
+
+static int stih416_sas_dac_mute(struct snd_soc_dai *dai, int mute, int stream)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ if (mute) {
+ return snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_SOFTMUTE_MASK,
+ STIH416_DAC_SOFTMUTE_MASK);
+ } else {
+ return snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
+ STIH416_DAC_SOFTMUTE_MASK, 0);
+ }
+}
+
+static int stih407_sas_dac_mute(struct snd_soc_dai *dai, int mute, int stream)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ if (mute) {
+ return snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_SOFTMUTE_MASK,
+ STIH407_DAC_SOFTMUTE_MASK);
+ } else {
+ return snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
+ STIH407_DAC_SOFTMUTE_MASK,
+ 0);
+ }
+}
+
+/*
+ * SPDIF
+ */
+static int sti_sas_spdif_set_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
+ dev_err(dai->codec->dev,
+ "%s: ERROR: Unsupporter master mask 0x%x\n",
+ __func__, fmt & SND_SOC_DAIFMT_MASTER_MASK);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * sti_sas_spdif_trigger:
+ * Trigger function is used to ensure that BiPhase Formater is disabled
+ * before CPU dai is stopped.
+ * This is mandatory to avoid that BPF is stalled
+ */
+static int sti_sas_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ return snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
+ SPDIF_BIPHASE_ENABLE_MASK,
+ SPDIF_BIPHASE_ENABLE_MASK);
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ return snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
+ SPDIF_BIPHASE_ENABLE_MASK,
+ 0);
+ default:
+ return -EINVAL;
+ }
+}
+
+static bool sti_sas_volatile_register(struct device *dev, unsigned int reg)
+{
+ if (reg == STIH407_AUDIO_GLUE_CTRL)
+ return true;
+
+ return false;
+}
+
+/*
+ * CODEC DAIS
+ */
+
+/*
+ * sti_sas_set_sysclk:
+ * get MCLK input frequency to check that MCLK-FS ratio is coherent
+ */
+static int sti_sas_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
+
+ if (dir == SND_SOC_CLOCK_OUT)
+ return 0;
+
+ if (clk_id != 0)
+ return -EINVAL;
+
+ switch (dai->id) {
+ case STI_SAS_DAI_SPDIF_OUT:
+ drvdata->spdif.mclk = freq;
+ break;
+
+ case STI_SAS_DAI_ANALOG_OUT:
+ drvdata->dac.mclk = freq;
+ break;
+ }
+
+ return 0;
+}
+
+static int sti_sas_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ switch (dai->id) {
+ case STI_SAS_DAI_SPDIF_OUT:
+ if ((drvdata->spdif.mclk / runtime->rate) != 128) {
+ dev_err(codec->dev, "unexpected mclk-fs ratio");
+ return -EINVAL;
+ }
+ break;
+ case STI_SAS_DAI_ANALOG_OUT:
+ if ((drvdata->dac.mclk / runtime->rate) != 256) {
+ dev_err(codec->dev, "unexpected mclk-fs ratio");
+ return -EINVAL;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+const struct snd_soc_dai_ops stih416_dac_ops = {
+ .set_fmt = sti_sas_dac_set_fmt,
+ .mute_stream = stih416_sas_dac_mute,
+ .prepare = sti_sas_prepare,
+ .set_sysclk = sti_sas_set_sysclk,
+};
+
+const struct snd_soc_dai_ops stih407_dac_ops = {
+ .set_fmt = sti_sas_dac_set_fmt,
+ .mute_stream = stih407_sas_dac_mute,
+ .prepare = sti_sas_prepare,
+ .set_sysclk = sti_sas_set_sysclk,
+};
+
+const struct regmap_config stih407_sas_regmap = {
+ .reg_bits = 32,
+ .val_bits = 32,
+
+ .max_register = STIH407_AUDIO_DAC_CTRL,
+ .reg_defaults = stih407_sas_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(stih407_sas_reg_defaults),
+ .volatile_reg = sti_sas_volatile_register,
+ .cache_type = REGCACHE_RBTREE,
+ .reg_read = sti_sas_read_reg,
+ .reg_write = sti_sas_write_reg,
+};
+
+const struct regmap_config stih416_sas_regmap = {
+ .reg_bits = 32,
+ .val_bits = 32,
+
+ .max_register = STIH416_AUDIO_DAC_CTRL,
+ .reg_defaults = stih416_sas_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(stih416_sas_reg_defaults),
+ .volatile_reg = sti_sas_volatile_register,
+ .cache_type = REGCACHE_RBTREE,
+ .reg_read = sti_sas_read_reg,
+ .reg_write = sti_sas_write_reg,
+};
+
+const struct sti_sas_dev_data stih416_data = {
+ .chipid = CHIPID_STIH416,
+ .regmap = &stih416_sas_regmap,
+ .dac_ops = &stih416_dac_ops,
+ .dapm_widgets = stih416_sas_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(stih416_sas_dapm_widgets),
+ .dapm_routes = stih416_sas_route,
+ .num_dapm_routes = ARRAY_SIZE(stih416_sas_route),
+};
+
+const struct sti_sas_dev_data stih407_data = {
+ .chipid = CHIPID_STIH407,
+ .regmap = &stih407_sas_regmap,
+ .dac_ops = &stih407_dac_ops,
+ .dapm_widgets = stih407_sas_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(stih407_sas_dapm_widgets),
+ .dapm_routes = stih407_sas_route,
+ .num_dapm_routes = ARRAY_SIZE(stih407_sas_route),
+};
+
+static struct snd_soc_dai_driver sti_sas_dai[] = {
+ {
+ .name = "sas-dai-spdif-out",
+ .id = STI_SAS_DAI_SPDIF_OUT,
+ .playback = {
+ .stream_name = "spdif_p",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 |
+ SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
+ SNDRV_PCM_RATE_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = (struct snd_soc_dai_ops[]) {
+ {
+ .set_fmt = sti_sas_spdif_set_fmt,
+ .trigger = sti_sas_spdif_trigger,
+ .set_sysclk = sti_sas_set_sysclk,
+ .prepare = sti_sas_prepare,
+ }
+ },
+ },
+ {
+ .name = "sas-dai-dac",
+ .id = STI_SAS_DAI_ANALOG_OUT,
+ .playback = {
+ .stream_name = "dac_p",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ },
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int sti_sas_resume(struct snd_soc_codec *codec)
+{
+ struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
+
+ return sti_sas_init_sas_registers(codec, drvdata);
+}
+#else
+#define sti_sas_resume NULL
+#endif
+
+static int sti_sas_codec_probe(struct snd_soc_codec *codec)
+{
+ struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
+ int ret;
+
+ ret = sti_sas_init_sas_registers(codec, drvdata);
+
+ return ret;
+}
+
+static struct snd_soc_codec_driver sti_sas_driver = {
+ .probe = sti_sas_codec_probe,
+ .resume = sti_sas_resume,
+};
+
+static const struct of_device_id sti_sas_dev_match[] = {
+ {
+ .compatible = "st,stih416-sas-codec",
+ .data = &stih416_data,
+ },
+ {
+ .compatible = "st,stih407-sas-codec",
+ .data = &stih407_data,
+ },
+ {},
+};
+
+static int sti_sas_driver_probe(struct platform_device *pdev)
+{
+ struct device_node *pnode = pdev->dev.of_node;
+ struct sti_sas_data *drvdata;
+
+ /* Allocate device structure */
+ drvdata = devm_kzalloc(&pdev->dev, sizeof(struct sti_sas_data),
+ GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ /* Populate data structure depending on compatibility */
+ if (!of_match_node(sti_sas_dev_match, pnode)->data) {
+ dev_err(&pdev->dev, "data associated to device is missing");
+ return -EINVAL;
+ }
+
+ drvdata->dev_data = of_match_node(sti_sas_dev_match, pnode)->data;
+
+ /* Initialise device structure */
+ drvdata->dev = &pdev->dev;
+
+ /* Request the DAC & SPDIF registers memory region */
+ drvdata->dac.virt_regmap = devm_regmap_init(&pdev->dev, NULL, drvdata,
+ drvdata->dev_data->regmap);
+ if (!drvdata->dac.virt_regmap) {
+ dev_err(&pdev->dev, "audio registers not enabled\n");
+ return -EFAULT;
+ }
+
+ /* Request the syscon region */
+ drvdata->dac.regmap =
+ syscon_regmap_lookup_by_phandle(pnode, "st,syscfg");
+ if (!drvdata->dac.regmap) {
+ dev_err(&pdev->dev, "syscon registers not available\n");
+ return -EFAULT;
+ }
+ drvdata->spdif.regmap = drvdata->dac.regmap;
+
+ /* Set DAC dai probe */
+ if (drvdata->dev_data->chipid == CHIPID_STIH416)
+ sti_sas_dai[STI_SAS_DAI_ANALOG_OUT].probe = stih416_dac_probe;
+
+ sti_sas_dai[STI_SAS_DAI_ANALOG_OUT].ops = drvdata->dev_data->dac_ops;
+
+ /* Set dapms*/
+ sti_sas_driver.dapm_widgets = drvdata->dev_data->dapm_widgets;
+ sti_sas_driver.num_dapm_widgets = drvdata->dev_data->num_dapm_widgets;
+
+ sti_sas_driver.dapm_routes = drvdata->dev_data->dapm_routes;
+ sti_sas_driver.num_dapm_routes = drvdata->dev_data->num_dapm_routes;
+
+ /* Store context */
+ dev_set_drvdata(&pdev->dev, drvdata);
+
+ return snd_soc_register_codec(&pdev->dev, &sti_sas_driver,
+ sti_sas_dai,
+ ARRAY_SIZE(sti_sas_dai));
+}
+
+static int sti_sas_driver_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+
+ return 0;
+}
+
+static struct platform_driver sti_sas_platform_driver = {
+ .driver = {
+ .name = "sti-sas-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = sti_sas_dev_match,
+ },
+ .probe = sti_sas_driver_probe,
+ .remove = sti_sas_driver_remove,
+};
+
+module_platform_driver(sti_sas_platform_driver);
+
+MODULE_DESCRIPTION("audio codec for STMicroelectronics sti platforms");
+MODULE_AUTHOR("Arnaud.pouliquen at st.com");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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