--- /dev/null
+/*
+ * wm8960.c -- WM8960 ALSA SoC Audio driver
+ *
+ * Author: 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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "wm8960.h"
+
+#define AUDIO_NAME "wm8960"
+
+struct snd_soc_codec_device soc_codec_dev_wm8960;
+
+/* R25 - Power 1 */
+#define WM8960_VREF 0x40
+
+/* R28 - Anti-pop 1 */
+#define WM8960_POBCTRL 0x80
+#define WM8960_BUFDCOPEN 0x10
+#define WM8960_BUFIOEN 0x08
+#define WM8960_SOFT_ST 0x04
+#define WM8960_HPSTBY 0x01
+
+/* R29 - Anti-pop 2 */
+#define WM8960_DISOP 0x40
+
+/*
+ * wm8960 register cache
+ * We can't read the WM8960 register space when we are
+ * using 2 wire for device control, so we cache them instead.
+ */
+static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
+ 0x0097, 0x0097, 0x0000, 0x0000,
+ 0x0000, 0x0008, 0x0000, 0x000a,
+ 0x01c0, 0x0000, 0x00ff, 0x00ff,
+ 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x007b, 0x0100, 0x0032,
+ 0x0000, 0x00c3, 0x00c3, 0x01c0,
+ 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0100, 0x0100, 0x0050, 0x0050,
+ 0x0050, 0x0050, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0040, 0x0000,
+ 0x0000, 0x0050, 0x0050, 0x0000,
+ 0x0002, 0x0037, 0x004d, 0x0080,
+ 0x0008, 0x0031, 0x0026, 0x00e9,
+};
+
+struct wm8960_priv {
+ u16 reg_cache[WM8960_CACHEREGNUM];
+ struct snd_soc_codec codec;
+};
+
+/*
+ * read wm8960 register cache
+ */
+static inline unsigned int wm8960_read_reg_cache(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ u16 *cache = codec->reg_cache;
+ if (reg == WM8960_RESET)
+ return 0;
+ if (reg >= WM8960_CACHEREGNUM)
+ return -1;
+ return cache[reg];
+}
+
+/*
+ * write wm8960 register cache
+ */
+static inline void wm8960_write_reg_cache(struct snd_soc_codec *codec,
+ u16 reg, unsigned int value)
+{
+ u16 *cache = codec->reg_cache;
+ if (reg >= WM8960_CACHEREGNUM)
+ return;
+ cache[reg] = value;
+}
+
+static inline unsigned int wm8960_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ return wm8960_read_reg_cache(codec, reg);
+}
+
+/*
+ * write to the WM8960 register space
+ */
+static int wm8960_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ u8 data[2];
+
+ /* data is
+ * D15..D9 WM8960 register offset
+ * D8...D0 register data
+ */
+ data[0] = (reg << 1) | ((value >> 8) & 0x0001);
+ data[1] = value & 0x00ff;
+
+ wm8960_write_reg_cache(codec, reg, value);
+ if (codec->hw_write(codec->control_data, data, 2) == 2)
+ return 0;
+ else
+ return -EIO;
+}
+
+#define wm8960_reset(c) wm8960_write(c, WM8960_RESET, 0)
+
+/* enumerated controls */
+static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
+static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
+ "Right Inverted", "Stereo Inversion"};
+static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
+static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
+static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
+static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
+
+static const struct soc_enum wm8960_enum[] = {
+ SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
+ SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
+ SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
+ SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
+ SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
+ SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
+ SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
+};
+
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
+static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
+static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
+
+static const struct snd_kcontrol_new wm8960_snd_controls[] = {
+SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
+ 0, 63, 0, adc_tlv),
+SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
+ 6, 1, 0),
+SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
+ 7, 1, 0),
+
+SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
+ 0, 255, 0, dac_tlv),
+
+SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
+ 0, 127, 0, out_tlv),
+SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
+ 7, 1, 0),
+
+SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
+ 0, 127, 0, out_tlv),
+SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
+ 7, 1, 0),
+SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
+SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
+
+SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
+SOC_ENUM("ADC Polarity", wm8960_enum[1]),
+SOC_ENUM("Playback De-emphasis", wm8960_enum[0]),
+SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
+
+SOC_ENUM("DAC Polarity", wm8960_enum[2]),
+
+SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]),
+SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]),
+SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
+SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
+
+SOC_ENUM("ALC Function", wm8960_enum[5]),
+SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
+SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
+SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
+SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
+SOC_ENUM("ALC Mode", wm8960_enum[6]),
+SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
+SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
+
+SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
+SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
+
+SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
+ 0, 127, 0),
+
+SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
+ WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
+ WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
+ WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
+ WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
+};
+
+static const struct snd_kcontrol_new wm8960_lin_boost[] = {
+SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
+SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_lin[] = {
+SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_rin_boost[] = {
+SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
+SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_rin[] = {
+SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
+SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
+SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_mono_out[] = {
+SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("LINPUT1"),
+SND_SOC_DAPM_INPUT("RINPUT1"),
+SND_SOC_DAPM_INPUT("LINPUT2"),
+SND_SOC_DAPM_INPUT("RINPUT2"),
+SND_SOC_DAPM_INPUT("LINPUT3"),
+SND_SOC_DAPM_INPUT("RINPUT3"),
+
+SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
+
+SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
+ wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
+SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
+ wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
+
+SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
+ wm8960_lin, ARRAY_SIZE(wm8960_lin)),
+SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
+ wm8960_rin, ARRAY_SIZE(wm8960_rin)),
+
+SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
+SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
+
+SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
+SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
+
+SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
+ &wm8960_loutput_mixer[0],
+ ARRAY_SIZE(wm8960_loutput_mixer)),
+SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
+ &wm8960_routput_mixer[0],
+ ARRAY_SIZE(wm8960_routput_mixer)),
+
+SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
+ &wm8960_mono_out[0],
+ ARRAY_SIZE(wm8960_mono_out)),
+
+SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
+SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
+
+SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
+SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
+
+SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
+SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
+
+SND_SOC_DAPM_OUTPUT("SPK_LP"),
+SND_SOC_DAPM_OUTPUT("SPK_LN"),
+SND_SOC_DAPM_OUTPUT("HP_L"),
+SND_SOC_DAPM_OUTPUT("HP_R"),
+SND_SOC_DAPM_OUTPUT("SPK_RP"),
+SND_SOC_DAPM_OUTPUT("SPK_RN"),
+SND_SOC_DAPM_OUTPUT("OUT3"),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+ { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
+ { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
+ { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
+
+ { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
+ { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
+ { "Left Input Mixer", NULL, "LINPUT2" },
+ { "Left Input Mixer", NULL, "LINPUT3" },
+
+ { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
+ { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
+ { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
+
+ { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
+ { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
+ { "Right Input Mixer", NULL, "RINPUT2" },
+ { "Right Input Mixer", NULL, "LINPUT3" },
+
+ { "Left ADC", NULL, "Left Input Mixer" },
+ { "Right ADC", NULL, "Right Input Mixer" },
+
+ { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
+ { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
+ { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
+
+ { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
+ { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
+ { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
+
+ { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
+ { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
+
+ { "LOUT1 PGA", NULL, "Left Output Mixer" },
+ { "ROUT1 PGA", NULL, "Right Output Mixer" },
+
+ { "HP_L", NULL, "LOUT1 PGA" },
+ { "HP_R", NULL, "ROUT1 PGA" },
+
+ { "Left Speaker PGA", NULL, "Left Output Mixer" },
+ { "Right Speaker PGA", NULL, "Right Output Mixer" },
+
+ { "Left Speaker Output", NULL, "Left Speaker PGA" },
+ { "Right Speaker Output", NULL, "Right Speaker PGA" },
+
+ { "SPK_LN", NULL, "Left Speaker Output" },
+ { "SPK_LP", NULL, "Left Speaker Output" },
+ { "SPK_RN", NULL, "Right Speaker Output" },
+ { "SPK_RP", NULL, "Right Speaker Output" },
+
+ { "OUT3", NULL, "Mono Output Mixer", }
+};
+
+static int wm8960_add_widgets(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
+ ARRAY_SIZE(wm8960_dapm_widgets));
+
+ snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
+
+ snd_soc_dapm_new_widgets(codec);
+ return 0;
+}
+
+static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u16 iface = 0;
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ iface |= 0x0040;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ iface |= 0x0002;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ iface |= 0x0001;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ iface |= 0x0003;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ iface |= 0x0013;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ iface |= 0x0090;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ iface |= 0x0080;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ iface |= 0x0010;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set iface */
+ wm8960_write(codec, WM8960_IFACE1, iface);
+ return 0;
+}
+
+static int wm8960_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_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->card->codec;
+ u16 iface = wm8960_read(codec, WM8960_IFACE1) & 0xfff3;
+
+ /* bit size */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ iface |= 0x0004;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ iface |= 0x0008;
+ break;
+ }
+
+ /* set iface */
+ wm8960_write(codec, WM8960_IFACE1, iface);
+ return 0;
+}
+
+static int wm8960_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u16 mute_reg = wm8960_read(codec, WM8960_DACCTL1) & 0xfff7;
+
+ if (mute)
+ wm8960_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
+ else
+ wm8960_write(codec, WM8960_DACCTL1, mute_reg);
+ return 0;
+}
+
+static int wm8960_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct wm8960_data *pdata = codec->dev->platform_data;
+ u16 reg;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ /* Set VMID to 2x50k */
+ reg = wm8960_read(codec, WM8960_POWER1);
+ reg &= ~0x180;
+ reg |= 0x80;
+ wm8960_write(codec, WM8960_POWER1, reg);
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->bias_level == SND_SOC_BIAS_OFF) {
+ /* Enable anti-pop features */
+ wm8960_write(codec, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN | WM8960_BUFIOEN);
+
+ /* Discharge HP output */
+ reg = WM8960_DISOP;
+ if (pdata)
+ reg |= pdata->dres << 4;
+ wm8960_write(codec, WM8960_APOP2, reg);
+
+ msleep(400);
+
+ wm8960_write(codec, WM8960_APOP2, 0);
+
+ /* Enable & ramp VMID at 2x50k */
+ reg = wm8960_read(codec, WM8960_POWER1);
+ reg |= 0x80;
+ wm8960_write(codec, WM8960_POWER1, reg);
+ msleep(100);
+
+ /* Enable VREF */
+ wm8960_write(codec, WM8960_POWER1, reg | WM8960_VREF);
+
+ /* Disable anti-pop features */
+ wm8960_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
+ }
+
+ /* Set VMID to 2x250k */
+ reg = wm8960_read(codec, WM8960_POWER1);
+ reg &= ~0x180;
+ reg |= 0x100;
+ wm8960_write(codec, WM8960_POWER1, reg);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ /* Enable anti-pop features */
+ wm8960_write(codec, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN | WM8960_BUFIOEN);
+
+ /* Disable VMID and VREF, let them discharge */
+ wm8960_write(codec, WM8960_POWER1, 0);
+ msleep(600);
+
+ wm8960_write(codec, WM8960_APOP1, 0);
+ break;
+ }
+
+ codec->bias_level = level;
+
+ return 0;
+}
+
+/* PLL divisors */
+struct _pll_div {
+ u32 pre_div:1;
+ u32 n:4;
+ u32 k:24;
+};
+
+/* The size in bits of the pll divide multiplied by 10
+ * to allow rounding later */
+#define FIXED_PLL_SIZE ((1 << 24) * 10)
+
+static int pll_factors(unsigned int source, unsigned int target,
+ struct _pll_div *pll_div)
+{
+ unsigned long long Kpart;
+ unsigned int K, Ndiv, Nmod;
+
+ pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
+
+ /* Scale up target to PLL operating frequency */
+ target *= 4;
+
+ Ndiv = target / source;
+ if (Ndiv < 6) {
+ source >>= 1;
+ pll_div->pre_div = 1;
+ Ndiv = target / source;
+ } else
+ pll_div->pre_div = 0;
+
+ if ((Ndiv < 6) || (Ndiv > 12)) {
+ pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
+ return -EINVAL;
+ }
+
+ pll_div->n = Ndiv;
+ Nmod = target % source;
+ Kpart = FIXED_PLL_SIZE * (long long)Nmod;
+
+ do_div(Kpart, source);
+
+ K = Kpart & 0xFFFFFFFF;
+
+ /* Check if we need to round */
+ if ((K % 10) >= 5)
+ K += 5;
+
+ /* Move down to proper range now rounding is done */
+ K /= 10;
+
+ pll_div->k = K;
+
+ pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
+ pll_div->n, pll_div->k, pll_div->pre_div);
+
+ return 0;
+}
+
+static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai,
+ int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u16 reg;
+ static struct _pll_div pll_div;
+ int ret;
+
+ if (freq_in && freq_out) {
+ ret = pll_factors(freq_in, freq_out, &pll_div);
+ if (ret != 0)
+ return ret;
+ }
+
+ /* Disable the PLL: even if we are changing the frequency the
+ * PLL needs to be disabled while we do so. */
+ wm8960_write(codec, WM8960_CLOCK1,
+ wm8960_read(codec, WM8960_CLOCK1) & ~1);
+ wm8960_write(codec, WM8960_POWER2,
+ wm8960_read(codec, WM8960_POWER2) & ~1);
+
+ if (!freq_in || !freq_out)
+ return 0;
+
+ reg = wm8960_read(codec, WM8960_PLL1) & ~0x3f;
+ reg |= pll_div.pre_div << 4;
+ reg |= pll_div.n;
+
+ if (pll_div.k) {
+ reg |= 0x20;
+
+ wm8960_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
+ wm8960_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
+ wm8960_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
+ }
+ wm8960_write(codec, WM8960_PLL1, reg);
+
+ /* Turn it on */
+ wm8960_write(codec, WM8960_POWER2,
+ wm8960_read(codec, WM8960_POWER2) | 1);
+ msleep(250);
+ wm8960_write(codec, WM8960_CLOCK1,
+ wm8960_read(codec, WM8960_CLOCK1) | 1);
+
+ return 0;
+}
+
+static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
+ int div_id, int div)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u16 reg;
+
+ switch (div_id) {
+ case WM8960_SYSCLKSEL:
+ reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1fe;
+ wm8960_write(codec, WM8960_CLOCK1, reg | div);
+ break;
+ case WM8960_SYSCLKDIV:
+ reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1f9;
+ wm8960_write(codec, WM8960_CLOCK1, reg | div);
+ break;
+ case WM8960_DACDIV:
+ reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1c7;
+ wm8960_write(codec, WM8960_CLOCK1, reg | div);
+ break;
+ case WM8960_OPCLKDIV:
+ reg = wm8960_read(codec, WM8960_PLL1) & 0x03f;
+ wm8960_write(codec, WM8960_PLL1, reg | div);
+ break;
+ case WM8960_DCLKDIV:
+ reg = wm8960_read(codec, WM8960_CLOCK2) & 0x03f;
+ wm8960_write(codec, WM8960_CLOCK2, reg | div);
+ break;
+ case WM8960_TOCLKSEL:
+ reg = wm8960_read(codec, WM8960_ADDCTL1) & 0x1fd;
+ wm8960_write(codec, WM8960_ADDCTL1, reg | div);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
+
+#define WM8960_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_ops wm8960_dai_ops = {
+ .hw_params = wm8960_hw_params,
+ .digital_mute = wm8960_mute,
+ .set_fmt = wm8960_set_dai_fmt,
+ .set_clkdiv = wm8960_set_dai_clkdiv,
+ .set_pll = wm8960_set_dai_pll,
+};
+
+struct snd_soc_dai wm8960_dai = {
+ .name = "WM8960",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8960_RATES,
+ .formats = WM8960_FORMATS,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8960_RATES,
+ .formats = WM8960_FORMATS,},
+ .ops = &wm8960_dai_ops,
+ .symmetric_rates = 1,
+};
+EXPORT_SYMBOL_GPL(wm8960_dai);
+
+static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+
+ wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ return 0;
+}
+
+static int wm8960_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+ int i;
+ u8 data[2];
+ u16 *cache = codec->reg_cache;
+
+ /* Sync reg_cache with the hardware */
+ for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
+ data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
+ data[1] = cache[i] & 0x00ff;
+ codec->hw_write(codec->control_data, data, 2);
+ }
+
+ wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ wm8960_set_bias_level(codec, codec->suspend_bias_level);
+ return 0;
+}
+
+static struct snd_soc_codec *wm8960_codec;
+
+static int wm8960_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
+
+ if (wm8960_codec == NULL) {
+ dev_err(&pdev->dev, "Codec device not registered\n");
+ return -ENODEV;
+ }
+
+ socdev->card->codec = wm8960_codec;
+ codec = wm8960_codec;
+
+ /* register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(codec->dev, "failed to create pcms: %d\n", ret);
+ goto pcm_err;
+ }
+
+ snd_soc_add_controls(codec, wm8960_snd_controls,
+ ARRAY_SIZE(wm8960_snd_controls));
+ wm8960_add_widgets(codec);
+ ret = snd_soc_init_card(socdev);
+ if (ret < 0) {
+ dev_err(codec->dev, "failed to register card: %d\n", ret);
+ goto card_err;
+ }
+
+ return ret;
+
+card_err:
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+pcm_err:
+ return ret;
+}
+
+/* power down chip */
+static int wm8960_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8960 = {
+ .probe = wm8960_probe,
+ .remove = wm8960_remove,
+ .suspend = wm8960_suspend,
+ .resume = wm8960_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
+
+static int wm8960_register(struct wm8960_priv *wm8960)
+{
+ struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
+ struct snd_soc_codec *codec = &wm8960->codec;
+ int ret;
+ u16 reg;
+
+ if (wm8960_codec) {
+ dev_err(codec->dev, "Another WM8960 is registered\n");
+ return -EINVAL;
+ }
+
+ if (!pdata) {
+ dev_warn(codec->dev, "No platform data supplied\n");
+ } else {
+ if (pdata->dres > WM8960_DRES_MAX) {
+ dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
+ pdata->dres = 0;
+ }
+ }
+
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ codec->private_data = wm8960;
+ codec->name = "WM8960";
+ codec->owner = THIS_MODULE;
+ codec->read = wm8960_read_reg_cache;
+ codec->write = wm8960_write;
+ codec->bias_level = SND_SOC_BIAS_OFF;
+ codec->set_bias_level = wm8960_set_bias_level;
+ codec->dai = &wm8960_dai;
+ codec->num_dai = 1;
+ codec->reg_cache_size = WM8960_CACHEREGNUM;
+ codec->reg_cache = &wm8960->reg_cache;
+
+ memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
+
+ ret = wm8960_reset(codec);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to issue reset\n");
+ return ret;
+ }
+
+ wm8960_dai.dev = codec->dev;
+
+ wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ /* Latch the update bits */
+ reg = wm8960_read(codec, WM8960_LINVOL);
+ wm8960_write(codec, WM8960_LINVOL, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_RINVOL);
+ wm8960_write(codec, WM8960_RINVOL, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_LADC);
+ wm8960_write(codec, WM8960_LADC, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_RADC);
+ wm8960_write(codec, WM8960_RADC, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_LDAC);
+ wm8960_write(codec, WM8960_LDAC, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_RDAC);
+ wm8960_write(codec, WM8960_RDAC, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_LOUT1);
+ wm8960_write(codec, WM8960_LOUT1, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_ROUT1);
+ wm8960_write(codec, WM8960_ROUT1, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_LOUT2);
+ wm8960_write(codec, WM8960_LOUT2, reg | 0x100);
+ reg = wm8960_read(codec, WM8960_ROUT2);
+ wm8960_write(codec, WM8960_ROUT2, reg | 0x100);
+
+ wm8960_codec = codec;
+
+ ret = snd_soc_register_codec(codec);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_register_dai(&wm8960_dai);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
+ snd_soc_unregister_codec(codec);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void wm8960_unregister(struct wm8960_priv *wm8960)
+{
+ wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
+ snd_soc_unregister_dai(&wm8960_dai);
+ snd_soc_unregister_codec(&wm8960->codec);
+ kfree(wm8960);
+ wm8960_codec = NULL;
+}
+
+static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8960_priv *wm8960;
+ struct snd_soc_codec *codec;
+
+ wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
+ if (wm8960 == NULL)
+ return -ENOMEM;
+
+ codec = &wm8960->codec;
+ codec->hw_write = (hw_write_t)i2c_master_send;
+
+ i2c_set_clientdata(i2c, wm8960);
+ codec->control_data = i2c;
+
+ codec->dev = &i2c->dev;
+
+ return wm8960_register(wm8960);
+}
+
+static __devexit int wm8960_i2c_remove(struct i2c_client *client)
+{
+ struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
+ wm8960_unregister(wm8960);
+ return 0;
+}
+
+static const struct i2c_device_id wm8960_i2c_id[] = {
+ { "wm8960", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
+
+static struct i2c_driver wm8960_i2c_driver = {
+ .driver = {
+ .name = "WM8960 I2C Codec",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8960_i2c_probe,
+ .remove = __devexit_p(wm8960_i2c_remove),
+ .id_table = wm8960_i2c_id,
+};
+
+static int __init wm8960_modinit(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&wm8960_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
+ ret);
+ }
+
+ return ret;
+}
+module_init(wm8960_modinit);
+
+static void __exit wm8960_exit(void)
+{
+ i2c_del_driver(&wm8960_i2c_driver);
+}
+module_exit(wm8960_exit);
+
+
+MODULE_DESCRIPTION("ASoC WM8960 driver");
+MODULE_AUTHOR("Liam Girdwood");
+MODULE_LICENSE("GPL");
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff