* [PATCH V4 1/2] ASoC: STA529: Add support for STA529 Audio Codec
2012-07-03 11:54 [PATCH V4 0/2] Add support for sta529 audio codec and spdif_out controller Rajeev Kumar
@ 2012-07-03 11:54 ` Rajeev Kumar
2012-07-03 19:03 ` Mark Brown
2012-07-03 11:54 ` [PATCH V4 2/2] ASoC: SPEAr spdif_out: Add spdif out support Rajeev Kumar
1 sibling, 1 reply; 7+ messages in thread
From: Rajeev Kumar @ 2012-07-03 11:54 UTC (permalink / raw)
To: tiwai, broonie, perex; +Cc: alsa-devel, Rajeev Kumar, lrg
This patch adds the support for STA529 audio codec.
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
---
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/sta529.c | 440 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 446 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/codecs/sta529.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 1de24cc..bbcb038 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -57,6 +57,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_SPDIF
select SND_SOC_SSM2602 if SND_SOC_I2C_AND_SPI
select SND_SOC_STA32X if I2C
+ select SND_SOC_STA529 if I2C
select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
select SND_SOC_TLV320AIC23 if I2C
select SND_SOC_TLV320AIC26 if SPI_MASTER
@@ -284,6 +285,9 @@ config SND_SOC_SSM2602
config SND_SOC_STA32X
tristate
+config SND_SOC_STA529
+ tristate
+
config SND_SOC_STAC9766
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index acf8088..8da3d22 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -49,6 +49,7 @@ snd-soc-spdif-tx-objs := spdif_transciever.o
snd-soc-spdif-rx-objs := spdif_receiver.o
snd-soc-ssm2602-objs := ssm2602.o
snd-soc-sta32x-objs := sta32x.o
+snd-soc-sta529-objs := sta529.o
snd-soc-stac9766-objs := stac9766.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic26-objs := tlv320aic26.o
@@ -163,6 +164,7 @@ obj-$(CONFIG_SND_SOC_SN95031) +=snd-soc-sn95031.o
obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o
obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
obj-$(CONFIG_SND_SOC_STA32X) += snd-soc-sta32x.o
+obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC26) += snd-soc-tlv320aic26.o
diff --git a/sound/soc/codecs/sta529.c b/sound/soc/codecs/sta529.c
new file mode 100644
index 0000000..c0a04cc
--- /dev/null
+++ b/sound/soc/codecs/sta529.c
@@ -0,0 +1,440 @@
+/*
+ * ASoC codec driver for spear platform
+ *
+ * sound/soc/codecs/sta529.c -- spear ALSA Soc codec driver
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Rajeev Kumar <rajeev-dlh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pm.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+
+/* STA529 Register offsets */
+#define STA529_FFXCFG0 0x00
+#define STA529_FFXCFG1 0x01
+#define STA529_MVOL 0x02
+#define STA529_LVOL 0x03
+#define STA529_RVOL 0x04
+#define STA529_TTF0 0x05
+#define STA529_TTF1 0x06
+#define STA529_TTP0 0x07
+#define STA529_TTP1 0x08
+#define STA529_S2PCFG0 0x0A
+#define STA529_S2PCFG1 0x0B
+#define STA529_P2SCFG0 0x0C
+#define STA529_P2SCFG1 0x0D
+#define STA529_PLLCFG0 0x14
+#define STA529_PLLCFG1 0x15
+#define STA529_PLLCFG2 0x16
+#define STA529_PLLCFG3 0x17
+#define STA529_PLLPFE 0x18
+#define STA529_PLLST 0x19
+#define STA529_ADCCFG 0x1E /*mic_select*/
+#define STA529_CKOCFG 0x1F
+#define STA529_MISC 0x20
+#define STA529_PADST0 0x21
+#define STA529_PADST1 0x22
+#define STA529_FFXST 0x23
+#define STA529_PWMIN1 0x2D
+#define STA529_PWMIN2 0x2E
+#define STA529_POWST 0x32
+
+#define STA529_MAX_REGISTER 0x32
+
+#define STA529_RATES (SNDRV_PCM_RATE_8000 | \
+ SNDRV_PCM_RATE_11025 | \
+ SNDRV_PCM_RATE_16000 | \
+ SNDRV_PCM_RATE_22050 | \
+ SNDRV_PCM_RATE_32000 | \
+ SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000)
+
+#define STA529_FORMAT (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+#define S2PC_VALUE 0x98
+#define CLOCK_OUT 0x60
+#define LEFT_J_DATA_FORMAT 0x10
+#define I2S_DATA_FORMAT 0x12
+#define RIGHT_J_DATA_FORMAT 0x14
+#define CODEC_MUTE_VAL 0x80
+
+#define POWER_CNTLMSAK 0x40
+#define POWER_STDBY 0x40
+#define FFX_MASK 0x80
+#define FFX_OFF 0x80
+#define POWER_UP 0x00
+#define FFX_CLK_ENB 0x01
+#define FFX_CLK_DIS 0x00
+#define FFX_CLK_MSK 0x01
+#define FREQ_RANGE_MSK 0x7C
+#define PDATA_LEN_MSK 0xC0
+#define BCLK_TO_FS_MSK 0x30
+#define AUDIO_MUTE_MSK 0x80
+
+static const struct reg_default sta529_reg_defaults[] = {
+ { 0, 0x35 }, /* R0 - FFX Configuration reg 0 */
+ { 1, 0xc8 }, /* R1 - FFX Configuration reg 1 */
+ { 2, 0x50 }, /* R2 - Master Volume */
+ { 3, 0x00 }, /* R3 - Left Volume */
+ { 4, 0x00 }, /* R4 - Right Volume */
+ { 10, 0xb2 }, /* R10 - S2P Config Reg 0 */
+ { 11, 0x41 }, /* R11 - S2P Config Reg 1 */
+ { 12, 0x92 }, /* R12 - P2S Config Reg 0 */
+ { 13, 0x41 }, /* R13 - P2S Config Reg 1 */
+ { 30, 0xd2 }, /* R30 - ADC Config Reg */
+ { 31, 0x40 }, /* R31 - clock Out Reg */
+ { 32, 0x21 }, /* R32 - Misc Register */
+};
+
+struct sta529 {
+ struct regmap *regmap;
+};
+
+static bool sta529_readable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+
+ case STA529_FFXCFG0:
+ case STA529_FFXCFG1:
+ case STA529_MVOL:
+ case STA529_LVOL:
+ case STA529_RVOL:
+ case STA529_S2PCFG0:
+ case STA529_S2PCFG1:
+ case STA529_P2SCFG0:
+ case STA529_P2SCFG1:
+ case STA529_ADCCFG:
+ case STA529_CKOCFG:
+ case STA529_MISC:
+ return true;
+ default:
+ return false;
+ }
+}
+
+
+static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary",
+ "Phase-shift"};
+
+static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0);
+static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0);
+static const SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text);
+
+static const struct snd_kcontrol_new sta529_snd_controls[] = {
+ SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0,
+ 127, 0, out_gain_tlv),
+ SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1,
+ master_vol_tlv),
+ SOC_ENUM("PWM Select", pwm_src),
+};
+
+static int sta529_set_bias_level(struct snd_soc_codec *codec, enum
+ snd_soc_bias_level level)
+{
+ struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ case SND_SOC_BIAS_PREPARE:
+ snd_soc_update_bits(codec, STA529_FFXCFG0, POWER_CNTLMSAK,
+ POWER_UP);
+ snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
+ FFX_CLK_ENB);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+ regcache_sync(sta529->regmap);
+ snd_soc_update_bits(codec, STA529_FFXCFG0,
+ POWER_CNTLMSAK, POWER_STDBY);
+ /* Making FFX output to zero */
+ snd_soc_update_bits(codec, STA529_FFXCFG0, FFX_MASK,
+ FFX_OFF);
+ snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
+ FFX_CLK_DIS);
+ break;
+ case SND_SOC_BIAS_OFF:
+ break;
+ }
+
+ /*
+ * store the label for powers down audio subsystem for suspend.This is
+ * used by soc core layer
+ */
+ codec->dapm.bias_level = level;
+
+ return 0;
+
+}
+
+static int sta529_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ int pdata, play_freq_val, record_freq_val, val;
+ int bclk_to_fs_ratio;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ pdata = 1;
+ bclk_to_fs_ratio = 0;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ pdata = 2;
+ bclk_to_fs_ratio = 1;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ pdata = 3;
+ bclk_to_fs_ratio = 2;
+ break;
+ default:
+ dev_err(codec->dev, "Unsupported format\n");
+ return -EINVAL;
+ }
+
+ switch (params_rate(params)) {
+ case 8000:
+ case 11025:
+ play_freq_val = 0;
+ record_freq_val = 2;
+ break;
+ case 16000:
+ case 22050:
+ play_freq_val = 1;
+ record_freq_val = 0;
+ break;
+
+ case 32000:
+ case 44100:
+ case 48000:
+ play_freq_val = 2;
+ record_freq_val = 0;
+ break;
+ default:
+ dev_err(codec->dev, "Unsupported rate\n");
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ snd_soc_update_bits(codec, STA529_S2PCFG1, PDATA_LEN_MSK,
+ pdata << 6);
+ snd_soc_update_bits(codec, STA529_S2PCFG1, BCLK_TO_FS_MSK,
+ bclk_to_fs_ratio << 4);
+ } else {
+ snd_soc_update_bits(codec, STA529_P2SCFG1, PDATA_LEN_MSK,
+ pdata << 6);
+ snd_soc_update_bits(codec, STA529_P2SCFG1, BCLK_TO_FS_MSK,
+ bclk_to_fs_ratio << 4);
+ }
+
+ /* set FFX audio frequency range */
+ val = (((val & 0x83) | (play_freq_val << 4)) | (record_freq_val << 2));
+ snd_soc_update_bits(codec, STA529_MISC, FREQ_RANGE_MSK, val);
+
+ return 0;
+}
+
+static int sta529_mute(struct snd_soc_dai *dai, int mute)
+{
+ u8 val = 0;
+
+ if (mute)
+ val |= CODEC_MUTE_VAL;
+
+ snd_soc_update_bits(dai->codec, STA529_FFXCFG0, AUDIO_MUTE_MSK, val);
+
+ return 0;
+}
+
+static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u8 mode = 0;
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_LEFT_J:
+ mode = LEFT_J_DATA_FORMAT;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ mode = I2S_DATA_FORMAT;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ mode = RIGHT_J_DATA_FORMAT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, STA529_S2PCFG0, 0x0D, mode);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops sta529_dai_ops = {
+ .hw_params = sta529_hw_params,
+ .set_fmt = sta529_set_dai_fmt,
+ .digital_mute = sta529_mute,
+};
+
+static struct snd_soc_dai_driver sta529_dai = {
+ .name = "sta529-audio",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = STA529_RATES,
+ .formats = STA529_FORMAT,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = STA529_RATES,
+ .formats = STA529_FORMAT,
+ },
+ .ops = &sta529_dai_ops,
+};
+
+static int sta529_probe(struct snd_soc_codec *codec)
+{
+ struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ codec->control_data = sta529->regmap;
+ ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
+
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
+ return ret;
+ }
+ sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ return 0;
+}
+
+/* power down chip */
+static int sta529_remove(struct snd_soc_codec *codec)
+{
+ sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int sta529_suspend(struct snd_soc_codec *codec)
+{
+ sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int sta529_resume(struct snd_soc_codec *codec)
+{
+ sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ return 0;
+}
+
+struct snd_soc_codec_driver sta529_codec_driver = {
+ .probe = sta529_probe,
+ .remove = sta529_remove,
+ .set_bias_level = sta529_set_bias_level,
+ .suspend = sta529_suspend,
+ .resume = sta529_resume,
+ .controls = sta529_snd_controls,
+ .num_controls = ARRAY_SIZE(sta529_snd_controls),
+};
+
+static const struct regmap_config sta529_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = STA529_MAX_REGISTER,
+ .readable_reg = sta529_readable,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = sta529_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults),
+};
+
+static __devinit int sta529_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct sta529 *sta529;
+ int ret;
+
+ if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EINVAL;
+
+ sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL);
+ if (sta529 == NULL) {
+ dev_err(&i2c->dev, "Can not allocate memory\n");
+ return -ENOMEM;
+ }
+
+ sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap);
+ if (IS_ERR(sta529->regmap)) {
+ dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
+ return PTR_ERR(sta529->regmap);
+ }
+
+ i2c_set_clientdata(i2c, sta529);
+
+ ret = snd_soc_register_codec(&i2c->dev,
+ &sta529_codec_driver, &sta529_dai, 1);
+ if (ret != 0)
+ dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
+
+ return ret;
+}
+
+static int __devexit sta529_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id sta529_i2c_id[] = {
+ { "sta529", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);
+
+static struct i2c_driver sta529_i2c_driver = {
+ .driver = {
+ .name = "sta529",
+ .owner = THIS_MODULE,
+ },
+ .probe = sta529_i2c_probe,
+ .remove = __devexit_p(sta529_i2c_remove),
+ .id_table = sta529_i2c_id,
+};
+
+module_i2c_driver(sta529_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC STA529 codec driver");
+MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
+MODULE_LICENSE("GPL");
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH V4 2/2] ASoC: SPEAr spdif_out: Add spdif out support
2012-07-03 11:54 [PATCH V4 0/2] Add support for sta529 audio codec and spdif_out controller Rajeev Kumar
2012-07-03 11:54 ` [PATCH V4 1/2] ASoC: STA529: Add support for STA529 Audio Codec Rajeev Kumar
@ 2012-07-03 11:54 ` Rajeev Kumar
2012-07-03 18:58 ` Mark Brown
1 sibling, 1 reply; 7+ messages in thread
From: Rajeev Kumar @ 2012-07-03 11:54 UTC (permalink / raw)
To: tiwai, broonie, perex; +Cc: Vipin Kumar, alsa-devel, Rajeev Kumar, lrg
From: Vipin Kumar <vipin.kumar@st.com>
This patch implements the spdif out driver for ST peripheral. This
peripheral implements IEC60958 standard
Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
---
sound/soc/spear/spdif_out.c | 388 ++++++++++++++++++++++++++++++++++++++
sound/soc/spear/spdif_out_regs.h | 79 ++++++++
2 files changed, 467 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/spear/spdif_out.c
create mode 100644 sound/soc/spear/spdif_out_regs.h
diff --git a/sound/soc/spear/spdif_out.c b/sound/soc/spear/spdif_out.c
new file mode 100644
index 0000000..83a7d31
--- /dev/null
+++ b/sound/soc/spear/spdif_out.c
@@ -0,0 +1,388 @@
+/*
+ * ALSA SoC SPDIF Out Audio Layer for spear processors
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Vipin Kumar <vipin.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/soc.h>
+#include <sound/spear_dma.h>
+#include <sound/spear_spdif.h>
+#include "spdif_out_regs.h"
+
+static int spdif_out_mute;
+
+struct spdif_out_params {
+ u32 rate;
+ u32 core_freq;
+};
+
+struct spdif_out_dev {
+ struct clk *clk;
+ struct spear_dma_data dma_params;
+ struct spdif_out_params saved_params;
+ u32 running;
+ void __iomem *io_base;
+};
+
+static void spdif_out_configure(struct spdif_out_dev *host)
+{
+ writel(SPDIF_OUT_RESET, host->io_base + SPDIF_OUT_SOFT_RST);
+ mdelay(1);
+ writel(readl(host->io_base + SPDIF_OUT_SOFT_RST) & ~SPDIF_OUT_RESET,
+ host->io_base + SPDIF_OUT_SOFT_RST);
+
+ writel(SPDIF_OUT_FDMA_TRIG_16 | SPDIF_OUT_MEMFMT_16_16 |
+ SPDIF_OUT_VALID_HW | SPDIF_OUT_USER_HW |
+ SPDIF_OUT_CHNLSTA_HW | SPDIF_OUT_PARITY_HW,
+ host->io_base + SPDIF_OUT_CFG);
+
+ writel(0x7F, host->io_base + SPDIF_OUT_INT_STA_CLR);
+ writel(0x7F, host->io_base + SPDIF_OUT_INT_EN_CLR);
+}
+
+static int spdif_out_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct spdif_out_dev *host = snd_soc_dai_get_drvdata(cpu_dai);
+ int ret;
+
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return -EINVAL;
+
+ snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)&host->dma_params);
+
+ ret = clk_enable(host->clk);
+ if (ret)
+ return ret;
+
+ host->running = true;
+ spdif_out_configure(host);
+
+ return 0;
+}
+
+static void spdif_out_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
+
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return;
+
+ clk_disable(host->clk);
+ host->running = false;
+ snd_soc_dai_set_dma_data(dai, substream, NULL);
+}
+
+static void spdif_out_clock(struct spdif_out_dev *host, u32 core_freq,
+ u32 rate)
+{
+ u32 divider, ctrl;
+
+ clk_set_rate(host->clk, core_freq);
+ divider = DIV_ROUND_CLOSEST(clk_get_rate(host->clk), (rate * 128));
+
+ ctrl = readl(host->io_base + SPDIF_OUT_CTRL);
+ ctrl &= ~SPDIF_DIVIDER_MASK;
+ ctrl |= (divider << SPDIF_DIVIDER_SHIFT) & SPDIF_DIVIDER_MASK;
+ writel(ctrl, host->io_base + SPDIF_OUT_CTRL);
+}
+
+static int spdif_out_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
+ u32 rate, core_freq;
+
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return -EINVAL;
+
+ rate = params_rate(params);
+
+ switch (rate) {
+ case 8000:
+ case 16000:
+ case 32000:
+ case 64000:
+ /*
+ * The clock is multiplied by 10 to bring it to feasible range
+ * of frequencies for sscg
+ */
+ core_freq = 64000 * 128 * 10; /* 81.92 MHz */
+ break;
+ case 5512:
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ case 176400:
+ core_freq = 176400 * 128; /* 22.5792 MHz */
+ break;
+ case 48000:
+ case 96000:
+ case 192000:
+ default:
+ core_freq = 192000 * 128; /* 24.576 MHz */
+ break;
+ }
+
+ spdif_out_clock(host, core_freq, rate);
+ host->saved_params.core_freq = core_freq;
+ host->saved_params.rate = rate;
+
+ return 0;
+}
+
+static int spdif_out_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
+ u32 ctrl;
+ int ret = 0;
+
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return -EINVAL;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ctrl = readl(host->io_base + SPDIF_OUT_CTRL);
+ ctrl &= ~SPDIF_OPMODE_MASK;
+ if (!spdif_out_mute)
+ ctrl |= SPDIF_OPMODE_AUD_DATA |
+ SPDIF_STATE_NORMAL;
+ else
+ ctrl |= SPDIF_OPMODE_MUTE_PCM;
+ writel(ctrl, host->io_base + SPDIF_OUT_CTRL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ ctrl = readl(host->io_base + SPDIF_OUT_CTRL);
+ ctrl &= ~SPDIF_OPMODE_MASK;
+ ctrl |= SPDIF_OPMODE_OFF;
+ writel(ctrl, host->io_base + SPDIF_OUT_CTRL);
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int spdif_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
+ u32 val;
+
+ spdif_out_mute = mute;
+ val = readl(host->io_base + SPDIF_OUT_CTRL);
+ val &= ~SPDIF_OPMODE_MASK;
+
+ if (mute)
+ val |= SPDIF_OPMODE_MUTE_PCM;
+ else {
+ if (host->running)
+ val |= SPDIF_OPMODE_AUD_DATA | SPDIF_STATE_NORMAL;
+ else
+ val |= SPDIF_OPMODE_OFF;
+ }
+
+ writel(val, host->io_base + SPDIF_OUT_CTRL);
+ return 0;
+}
+
+static int spdif_mute_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = spdif_out_mute;
+ return 0;
+}
+
+static int spdif_mute_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 = codec->card;
+ struct snd_soc_pcm_runtime *rtd = card->rtd;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ if (spdif_out_mute == ucontrol->value.integer.value[0])
+ return 0;
+
+ spdif_digital_mute(cpu_dai, ucontrol->value.integer.value[0]);
+
+ return 1;
+}
+static const struct snd_kcontrol_new spdif_out_controls[] = {
+ SOC_SINGLE_BOOL_EXT("IEC958 Playback Switch",
+ (unsigned long)&spdif_out_mute,
+ spdif_mute_get, spdif_mute_put),
+};
+
+int spdif_soc_dai_probe(struct snd_soc_dai *dai)
+{
+ struct snd_soc_card *card = dai->card;
+ struct snd_soc_pcm_runtime *rtd = card->rtd;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ return snd_soc_add_codec_controls(codec, spdif_out_controls,
+ ARRAY_SIZE(spdif_out_controls));
+}
+
+static const struct snd_soc_dai_ops spdif_out_dai_ops = {
+ .digital_mute = spdif_digital_mute,
+ .startup = spdif_out_startup,
+ .shutdown = spdif_out_shutdown,
+ .trigger = spdif_out_trigger,
+ .hw_params = spdif_out_hw_params,
+};
+
+static struct snd_soc_dai_driver spdif_out_dai = {
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
+ SNDRV_PCM_RATE_192000),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .probe = spdif_soc_dai_probe,
+ .ops = &spdif_out_dai_ops,
+};
+
+static int spdif_out_probe(struct platform_device *pdev)
+{
+ struct spdif_out_dev *host;
+ struct spear_spdif_platform_data *pdata;
+ struct resource *res;
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
+ if (!devm_request_mem_region(&pdev->dev, res->start,
+ resource_size(res), pdev->name)) {
+ dev_warn(&pdev->dev, "Failed to get memory resourse\n");
+ return -ENOENT;
+ }
+
+ host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
+ if (!host) {
+ dev_warn(&pdev->dev, "kzalloc fail\n");
+ return -ENOMEM;
+ }
+
+ host->io_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!host->io_base) {
+ dev_warn(&pdev->dev, "ioremap failed\n");
+ return -ENOMEM;
+ }
+
+ host->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(host->clk))
+ return PTR_ERR(host->clk);
+
+ pdata = dev_get_platdata(&pdev->dev);
+
+ host->dma_params.data = pdata->dma_params;
+ host->dma_params.addr = res->start + SPDIF_OUT_FIFO_DATA;
+ host->dma_params.max_burst = 16;
+ host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ host->dma_params.filter = pdata->filter;
+
+ dev_set_drvdata(&pdev->dev, host);
+
+ ret = snd_soc_register_dai(&pdev->dev, &spdif_out_dai);
+ if (ret != 0) {
+ clk_put(host->clk);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int spdif_out_remove(struct platform_device *pdev)
+{
+ struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev);
+
+ snd_soc_unregister_dai(&pdev->dev);
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ clk_put(host->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int spdif_out_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev);
+
+ if (host->running)
+ clk_disable(host->clk);
+
+ return 0;
+}
+
+static int spdif_out_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev);
+
+ if (host->running) {
+ clk_enable(host->clk);
+ spdif_out_configure(host);
+ spdif_out_clock(host, host->saved_params.core_freq,
+ host->saved_params.rate);
+ }
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(spdif_out_dev_pm_ops, spdif_out_suspend, \
+ spdif_out_resume);
+
+#define SPDIF_OUT_DEV_PM_OPS (&spdif_out_dev_pm_ops)
+
+#else
+#define SPDIF_OUT_DEV_PM_OPS NULL
+
+#endif
+
+static struct platform_driver spdif_out_driver = {
+ .probe = spdif_out_probe,
+ .remove = spdif_out_remove,
+ .driver = {
+ .name = "spdif-out",
+ .owner = THIS_MODULE,
+ .pm = SPDIF_OUT_DEV_PM_OPS,
+ },
+};
+
+module_platform_driver(spdif_out_driver);
+
+MODULE_AUTHOR("Vipin Kumar <vipin.kumar@st.com>");
+MODULE_DESCRIPTION("SPEAr SPDIF OUT SoC Interface");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:spdif_out");
diff --git a/sound/soc/spear/spdif_out_regs.h b/sound/soc/spear/spdif_out_regs.h
new file mode 100644
index 0000000..a5e5332
--- /dev/null
+++ b/sound/soc/spear/spdif_out_regs.h
@@ -0,0 +1,79 @@
+/*
+ * SPEAr SPDIF OUT controller header file
+ *
+ * Copyright (ST) 2011 Vipin Kumar (vipin.kumar@st.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef SPDIF_OUT_REGS_H
+#define SPDIF_OUT_REGS_H
+
+#define SPDIF_OUT_SOFT_RST 0x00
+ #define SPDIF_OUT_RESET (1 << 0)
+#define SPDIF_OUT_FIFO_DATA 0x04
+#define SPDIF_OUT_INT_STA 0x08
+#define SPDIF_OUT_INT_STA_CLR 0x0C
+ #define SPDIF_INT_UNDERFLOW (1 << 0)
+ #define SPDIF_INT_EODATA (1 << 1)
+ #define SPDIF_INT_EOBLOCK (1 << 2)
+ #define SPDIF_INT_EOLATENCY (1 << 3)
+ #define SPDIF_INT_EOPD_DATA (1 << 4)
+ #define SPDIF_INT_MEMFULLREAD (1 << 5)
+ #define SPDIF_INT_EOPD_PAUSE (1 << 6)
+
+#define SPDIF_OUT_INT_EN 0x10
+#define SPDIF_OUT_INT_EN_SET 0x14
+#define SPDIF_OUT_INT_EN_CLR 0x18
+#define SPDIF_OUT_CTRL 0x1C
+ #define SPDIF_OPMODE_MASK (7 << 0)
+ #define SPDIF_OPMODE_OFF (0 << 0)
+ #define SPDIF_OPMODE_MUTE_PCM (1 << 0)
+ #define SPDIF_OPMODE_MUTE_PAUSE (2 << 0)
+ #define SPDIF_OPMODE_AUD_DATA (3 << 0)
+ #define SPDIF_OPMODE_ENCODE (4 << 0)
+ #define SPDIF_STATE_NORMAL (1 << 3)
+ #define SPDIF_DIVIDER_MASK (0xff << 5)
+ #define SPDIF_DIVIDER_SHIFT (5)
+ #define SPDIF_SAMPLEREAD_MASK (0x1ffff << 15)
+ #define SPDIF_SAMPLEREAD_SHIFT (15)
+#define SPDIF_OUT_STA 0x20
+#define SPDIF_OUT_PA_PB 0x24
+#define SPDIF_OUT_PC_PD 0x28
+#define SPDIF_OUT_CL1 0x2C
+#define SPDIF_OUT_CR1 0x30
+#define SPDIF_OUT_CL2_CR2_UV 0x34
+#define SPDIF_OUT_PAUSE_LAT 0x38
+#define SPDIF_OUT_FRMLEN_BRST 0x3C
+#define SPDIF_OUT_CFG 0x40
+ #define SPDIF_OUT_MEMFMT_16_0 (0 << 5)
+ #define SPDIF_OUT_MEMFMT_16_16 (1 << 5)
+ #define SPDIF_OUT_VALID_DMA (0 << 3)
+ #define SPDIF_OUT_VALID_HW (1 << 3)
+ #define SPDIF_OUT_USER_DMA (0 << 2)
+ #define SPDIF_OUT_USER_HW (1 << 2)
+ #define SPDIF_OUT_CHNLSTA_DMA (0 << 1)
+ #define SPDIF_OUT_CHNLSTA_HW (1 << 1)
+ #define SPDIF_OUT_PARITY_HW (0 << 0)
+ #define SPDIF_OUT_PARITY_DMA (1 << 0)
+ #define SPDIF_OUT_FDMA_TRIG_2 (2 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_6 (6 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_8 (8 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_10 (10 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_12 (12 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_16 (16 << 8)
+ #define SPDIF_OUT_FDMA_TRIG_18 (18 << 8)
+
+#endif /* SPDIF_OUT_REGS_H */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread