ASoC: add ak4613 support
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tue, 15 Sep 2015 08:26:36 +0000 (08:26 +0000)
committerMark Brown <broonie@kernel.org>
Thu, 17 Sep 2015 11:33:08 +0000 (12:33 +0100)
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Documentation/devicetree/bindings/sound/ak4613.txt [new file with mode: 0644]
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/ak4613.c [new file with mode: 0644]

diff --git a/Documentation/devicetree/bindings/sound/ak4613.txt b/Documentation/devicetree/bindings/sound/ak4613.txt
new file mode 100644 (file)
index 0000000..15a9195
--- /dev/null
@@ -0,0 +1,17 @@
+AK4613 I2C transmitter
+
+This device supports I2C mode only.
+
+Required properties:
+
+- compatible : "asahi-kasei,ak4613"
+- reg : The chip select number on the I2C bus
+
+Example:
+
+&i2c {
+       ak4613: ak4613@0x10 {
+               compatible = "asahi-kasei,ak4613";
+               reg = <0x10>;
+       };
+};
index 0c9733e..a92e4d4 100644 (file)
@@ -36,6 +36,7 @@ config SND_SOC_ALL_CODECS
        select SND_SOC_AK4104 if SPI_MASTER
        select SND_SOC_AK4535 if I2C
        select SND_SOC_AK4554
+       select SND_SOC_AK4613 if I2C
        select SND_SOC_AK4641 if I2C
        select SND_SOC_AK4642 if I2C
        select SND_SOC_AK4671 if I2C
@@ -319,6 +320,10 @@ config SND_SOC_AK4535
 config SND_SOC_AK4554
        tristate "AKM AK4554 CODEC"
 
+config SND_SOC_AK4613
+       tristate "AKM AK4613 CODEC"
+       depends on I2C
+
 config SND_SOC_AK4641
        tristate
 
index 4a32077..5b6c8af 100644 (file)
@@ -26,6 +26,7 @@ snd-soc-ads117x-objs := ads117x.o
 snd-soc-ak4104-objs := ak4104.o
 snd-soc-ak4535-objs := ak4535.o
 snd-soc-ak4554-objs := ak4554.o
+snd-soc-ak4613-objs := ak4613.o
 snd-soc-ak4641-objs := ak4641.o
 snd-soc-ak4642-objs := ak4642.o
 snd-soc-ak4671-objs := ak4671.o
@@ -216,6 +217,7 @@ obj-$(CONFIG_SND_SOC_ADS117X)       += snd-soc-ads117x.o
 obj-$(CONFIG_SND_SOC_AK4104)   += snd-soc-ak4104.o
 obj-$(CONFIG_SND_SOC_AK4535)   += snd-soc-ak4535.o
 obj-$(CONFIG_SND_SOC_AK4554)   += snd-soc-ak4554.o
+obj-$(CONFIG_SND_SOC_AK4613)   += snd-soc-ak4613.o
 obj-$(CONFIG_SND_SOC_AK4641)   += snd-soc-ak4641.o
 obj-$(CONFIG_SND_SOC_AK4642)   += snd-soc-ak4642.o
 obj-$(CONFIG_SND_SOC_AK4671)   += snd-soc-ak4671.o
diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c
new file mode 100644 (file)
index 0000000..fd96a8f
--- /dev/null
@@ -0,0 +1,469 @@
+/*
+ * ak4613.c  --  Asahi Kasei ALSA Soc Audio driver
+ *
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * Based on ak4642.c by Kuninori Morimoto
+ * Based on wm8731.c by Richard Purdie
+ * Based on ak4535.c by Richard Purdie
+ * Based on wm8753.c by Liam Girdwood
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#define PW_MGMT1       0x00 /* Power Management 1 */
+#define PW_MGMT2       0x01 /* Power Management 2 */
+#define PW_MGMT3       0x02 /* Power Management 3 */
+#define CTRL1          0x03 /* Control 1 */
+#define CTRL2          0x04 /* Control 2 */
+#define DEMP1          0x05 /* De-emphasis1 */
+#define DEMP2          0x06 /* De-emphasis2 */
+#define OFD            0x07 /* Overflow Detect */
+#define ZRD            0x08 /* Zero Detect */
+#define ICTRL          0x09 /* Input Control */
+#define OCTRL          0x0a /* Output Control */
+#define LOUT1          0x0b /* LOUT1 Volume Control */
+#define ROUT1          0x0c /* ROUT1 Volume Control */
+#define LOUT2          0x0d /* LOUT2 Volume Control */
+#define ROUT2          0x0e /* ROUT2 Volume Control */
+#define LOUT3          0x0f /* LOUT3 Volume Control */
+#define ROUT3          0x10 /* ROUT3 Volume Control */
+#define LOUT4          0x11 /* LOUT4 Volume Control */
+#define ROUT4          0x12 /* ROUT4 Volume Control */
+#define LOUT5          0x13 /* LOUT5 Volume Control */
+#define ROUT5          0x14 /* ROUT5 Volume Control */
+#define LOUT6          0x15 /* LOUT6 Volume Control */
+#define ROUT6          0x16 /* ROUT6 Volume Control */
+
+/* PW_MGMT1 */
+#define RSTN           BIT(0)
+#define PMDAC          BIT(1)
+#define PMADC          BIT(2)
+#define PMVR           BIT(3)
+
+/* PW_MGMT2 */
+#define PMAD_ALL       0x7
+
+/* PW_MGMT3 */
+#define PMDA_ALL       0x3f
+
+/* CTRL1 */
+#define DIF0           BIT(3)
+#define DIF1           BIT(4)
+#define DIF2           BIT(5)
+#define TDM0           BIT(6)
+#define TDM1           BIT(7)
+#define NO_FMT         (0xff)
+#define FMT_MASK       (0xf8)
+
+/* CTRL2 */
+#define DFS_NORMAL_SPEED       (0 << 2)
+#define DFS_DOUBLE_SPEED       (1 << 2)
+#define DFS_QUAD_SPEED         (2 << 2)
+
+struct ak4613_priv {
+       struct mutex lock;
+
+       unsigned int fmt;
+       u8 fmt_ctrl;
+       int cnt;
+};
+
+struct ak4613_formats {
+       unsigned int width;
+       unsigned int fmt;
+};
+
+struct ak4613_interface {
+       struct ak4613_formats capture;
+       struct ak4613_formats playback;
+};
+
+static const struct reg_default ak4613_reg[] = {
+       { 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
+       { 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
+       { 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
+       { 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
+       { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
+       { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
+};
+
+#define AUDIO_IFACE_IDX_TO_VAL(i) (i << 3)
+#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
+static const struct ak4613_interface ak4613_iface[] = {
+       /* capture */                           /* playback */
+       [0] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(16, RIGHT_J) },
+       [1] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(20, RIGHT_J) },
+       [2] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, RIGHT_J) },
+       [3] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, LEFT_J) },
+       [4] = { AUDIO_IFACE(24, I2S),           AUDIO_IFACE(24, I2S) },
+};
+
+static const struct regmap_config ak4613_regmap_cfg = {
+       .reg_bits               = 8,
+       .val_bits               = 8,
+       .max_register           = 0x16,
+       .reg_defaults           = ak4613_reg,
+       .num_reg_defaults       = ARRAY_SIZE(ak4613_reg),
+};
+
+static const struct of_device_id ak4613_of_match[] = {
+       { .compatible = "asahi-kasei,ak4613",   .data = &ak4613_regmap_cfg },
+       {},
+};
+MODULE_DEVICE_TABLE(of, ak4613_of_match);
+
+static const struct i2c_device_id ak4613_i2c_id[] = {
+       { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
+
+static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
+
+       /* Outputs */
+       SND_SOC_DAPM_OUTPUT("LOUT1"),
+       SND_SOC_DAPM_OUTPUT("LOUT2"),
+       SND_SOC_DAPM_OUTPUT("LOUT3"),
+       SND_SOC_DAPM_OUTPUT("LOUT4"),
+       SND_SOC_DAPM_OUTPUT("LOUT5"),
+       SND_SOC_DAPM_OUTPUT("LOUT6"),
+
+       SND_SOC_DAPM_OUTPUT("ROUT1"),
+       SND_SOC_DAPM_OUTPUT("ROUT2"),
+       SND_SOC_DAPM_OUTPUT("ROUT3"),
+       SND_SOC_DAPM_OUTPUT("ROUT4"),
+       SND_SOC_DAPM_OUTPUT("ROUT5"),
+       SND_SOC_DAPM_OUTPUT("ROUT6"),
+
+       /* Inputs */
+       SND_SOC_DAPM_INPUT("LIN1"),
+       SND_SOC_DAPM_INPUT("LIN2"),
+
+       SND_SOC_DAPM_INPUT("RIN1"),
+       SND_SOC_DAPM_INPUT("RIN2"),
+
+       /* DAC */
+       SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
+       SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
+       SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
+       SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
+       SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
+       SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
+
+       /* ADC */
+       SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
+       SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
+};
+
+static const struct snd_soc_dapm_route ak4613_intercon[] = {
+       {"LOUT1", NULL, "DAC1"},
+       {"LOUT2", NULL, "DAC2"},
+       {"LOUT3", NULL, "DAC3"},
+       {"LOUT4", NULL, "DAC4"},
+       {"LOUT5", NULL, "DAC5"},
+       {"LOUT6", NULL, "DAC6"},
+
+       {"ROUT1", NULL, "DAC1"},
+       {"ROUT2", NULL, "DAC2"},
+       {"ROUT3", NULL, "DAC3"},
+       {"ROUT4", NULL, "DAC4"},
+       {"ROUT5", NULL, "DAC5"},
+       {"ROUT6", NULL, "DAC6"},
+
+       {"DAC1", NULL, "Playback"},
+       {"DAC2", NULL, "Playback"},
+       {"DAC3", NULL, "Playback"},
+       {"DAC4", NULL, "Playback"},
+       {"DAC5", NULL, "Playback"},
+       {"DAC6", NULL, "Playback"},
+
+       {"Capture", NULL, "ADC1"},
+       {"Capture", NULL, "ADC2"},
+
+       {"ADC1", NULL, "LIN1"},
+       {"ADC2", NULL, "LIN2"},
+
+       {"ADC1", NULL, "RIN1"},
+       {"ADC2", NULL, "RIN2"},
+};
+
+static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
+                              struct snd_soc_dai *dai)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
+       struct device *dev = codec->dev;
+
+       mutex_lock(&priv->lock);
+       priv->cnt--;
+       if (priv->cnt < 0) {
+               dev_err(dev, "unexpected counter error\n");
+               priv->cnt = 0;
+       }
+       if (!priv->cnt)
+               priv->fmt_ctrl = NO_FMT;
+       mutex_unlock(&priv->lock);
+}
+
+static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
+
+       fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
+
+       switch (fmt) {
+       case SND_SOC_DAIFMT_RIGHT_J:
+       case SND_SOC_DAIFMT_LEFT_J:
+       case SND_SOC_DAIFMT_I2S:
+               priv->fmt = fmt;
+
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
+                               struct snd_pcm_hw_params *params,
+                               struct snd_soc_dai *dai)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
+       const struct ak4613_formats *fmts;
+       struct device *dev = codec->dev;
+       unsigned int width = params_width(params);
+       unsigned int fmt = priv->fmt;
+       unsigned int rate;
+       int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+       int i, ret;
+       u8 fmt_ctrl, ctrl2;
+
+       rate = params_rate(params);
+       switch (rate) {
+       case 32000:
+       case 44100:
+       case 48000:
+               ctrl2 = DFS_NORMAL_SPEED;
+               break;
+       case 88200:
+       case 96000:
+               ctrl2 = DFS_DOUBLE_SPEED;
+               break;
+       case 176400:
+       case 192000:
+               ctrl2 = DFS_QUAD_SPEED;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       /*
+        * FIXME
+        *
+        * It doesn't support TDM at this point
+        */
+       fmt_ctrl = NO_FMT;
+       for (i = 0; i < ARRAY_SIZE(ak4613_iface); i++) {
+               fmts = (is_play) ?      &ak4613_iface[i].playback :
+                                       &ak4613_iface[i].capture;
+
+               if (fmts->fmt != fmt)
+                       continue;
+
+               if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
+                       if (fmts->width != width)
+                               continue;
+               } else {
+                       if (fmts->width < width)
+                               continue;
+               }
+
+               fmt_ctrl = AUDIO_IFACE_IDX_TO_VAL(i);
+               break;
+       }
+
+       ret = -EINVAL;
+       if (fmt_ctrl == NO_FMT)
+               goto hw_params_end;
+
+       mutex_lock(&priv->lock);
+       if ((priv->fmt_ctrl == NO_FMT) ||
+           (priv->fmt_ctrl == fmt_ctrl)) {
+               priv->fmt_ctrl = fmt_ctrl;
+               priv->cnt++;
+               ret = 0;
+       }
+       mutex_unlock(&priv->lock);
+
+       if (ret < 0)
+               goto hw_params_end;
+
+       snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
+       snd_soc_write(codec, CTRL2, ctrl2);
+
+hw_params_end:
+       if (ret < 0)
+               dev_warn(dev, "unsupported data width/format combination\n");
+
+       return ret;
+}
+
+static int ak4613_set_bias_level(struct snd_soc_codec *codec,
+                                enum snd_soc_bias_level level)
+{
+       u8 mgmt1 = 0;
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               mgmt1 |= RSTN;
+               /* fall through */
+       case SND_SOC_BIAS_PREPARE:
+               mgmt1 |= PMADC | PMDAC;
+               /* fall through */
+       case SND_SOC_BIAS_STANDBY:
+               mgmt1 |= PMVR;
+               /* fall through */
+       case SND_SOC_BIAS_OFF:
+       default:
+               break;
+       }
+
+       snd_soc_write(codec, PW_MGMT1, mgmt1);
+
+       return 0;
+}
+
+static const struct snd_soc_dai_ops ak4613_dai_ops = {
+       .shutdown       = ak4613_dai_shutdown,
+       .set_fmt        = ak4613_dai_set_fmt,
+       .hw_params      = ak4613_dai_hw_params,
+};
+
+#define AK4613_PCM_RATE                (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_176400 |\
+                                SNDRV_PCM_RATE_192000)
+#define AK4613_PCM_FMTBIT      (SNDRV_PCM_FMTBIT_S16_LE |\
+                                SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver ak4613_dai = {
+       .name = "ak4613-hifi",
+       .playback = {
+               .stream_name    = "Playback",
+               .channels_min   = 2,
+               .channels_max   = 2,
+               .rates          = AK4613_PCM_RATE,
+               .formats        = AK4613_PCM_FMTBIT,
+       },
+       .capture = {
+               .stream_name    = "Capture",
+               .channels_min   = 2,
+               .channels_max   = 2,
+               .rates          = AK4613_PCM_RATE,
+               .formats        = AK4613_PCM_FMTBIT,
+       },
+       .ops = &ak4613_dai_ops,
+       .symmetric_rates = 1,
+};
+
+static int ak4613_resume(struct snd_soc_codec *codec)
+{
+       struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
+
+       regcache_mark_dirty(regmap);
+       return regcache_sync(regmap);
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
+       .resume                 = ak4613_resume,
+       .set_bias_level         = ak4613_set_bias_level,
+       .dapm_widgets           = ak4613_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(ak4613_dapm_widgets),
+       .dapm_routes            = ak4613_intercon,
+       .num_dapm_routes        = ARRAY_SIZE(ak4613_intercon),
+};
+
+static int ak4613_i2c_probe(struct i2c_client *i2c,
+                           const struct i2c_device_id *id)
+{
+       struct device *dev = &i2c->dev;
+       struct device_node *np = dev->of_node;
+       const struct regmap_config *regmap_cfg;
+       struct regmap *regmap;
+       struct ak4613_priv *priv;
+
+       regmap_cfg = NULL;
+       if (np) {
+               const struct of_device_id *of_id;
+
+               of_id = of_match_device(ak4613_of_match, dev);
+               if (of_id)
+                       regmap_cfg = of_id->data;
+       } else {
+               regmap_cfg = (const struct regmap_config *)id->driver_data;
+       }
+
+       if (!regmap_cfg)
+               return -EINVAL;
+
+       priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
+
+       priv->fmt_ctrl          = NO_FMT;
+       priv->cnt               = 0;
+
+       mutex_init(&priv->lock);
+
+       i2c_set_clientdata(i2c, priv);
+
+       regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
+       if (IS_ERR(regmap))
+               return PTR_ERR(regmap);
+
+       return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
+                                     &ak4613_dai, 1);
+}
+
+static int ak4613_i2c_remove(struct i2c_client *client)
+{
+       snd_soc_unregister_codec(&client->dev);
+       return 0;
+}
+
+static struct i2c_driver ak4613_i2c_driver = {
+       .driver = {
+               .name = "ak4613-codec",
+               .owner = THIS_MODULE,
+               .of_match_table = ak4613_of_match,
+       },
+       .probe          = ak4613_i2c_probe,
+       .remove         = ak4613_i2c_remove,
+       .id_table       = ak4613_i2c_id,
+};
+
+module_i2c_driver(ak4613_i2c_driver);
+
+MODULE_DESCRIPTION("Soc AK4613 driver");
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
+MODULE_LICENSE("GPL v2");