]> pilppa.com Git - linux-2.6-omap-h63xx.git/commitdiff
[ALSA] ASoC: Add WM8510 driver
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Thu, 5 Jun 2008 12:49:32 +0000 (13:49 +0100)
committerTakashi Iwai <tiwai@suse.de>
Fri, 6 Jun 2008 09:54:25 +0000 (11:54 +0200)
The WM8510 is a mono CODEC with speaker driver optimised for telephony
applications, featuring:
 - 16/20/24/32 bit audio at data rates between 8kHz and 48kHz
 - On-chip PLL
 - Dual microphone inputs

This driver was originally written by Liam Girdwood with updates from
Brett Saunders, Geoffrey Wossum and myself.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Brett Saunders <breton.saunders@ntlworld.com>
Signed-off-by: Geoffrey Wossum <geoffrey@pager.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/wm8510.c [new file with mode: 0644]
sound/soc/codecs/wm8510.h [new file with mode: 0644]

index 7beefccfa82111c886a060c7b176dd03c1c04699..ef400b363440daf1a2af1afefe096d5e4fc710e4 100644 (file)
@@ -5,6 +5,9 @@ config SND_SOC_AC97_CODEC
 config SND_SOC_UDA1380
         tristate
 
+config SND_SOC_WM8510
+       tristate
+
 config SND_SOC_WM8731
        tristate
 
index d5926a1170784906aa90adb2cd8d038581ce26cc..b92c665416634bb98f3d46826efa31395333bfea 100644 (file)
@@ -1,5 +1,6 @@
 snd-soc-ac97-objs := ac97.o
 snd-soc-uda1380-objs := uda1380.o
+snd-soc-wm8510-objs := wm8510.o
 snd-soc-wm8731-objs := wm8731.o
 snd-soc-wm8750-objs := wm8750.o
 snd-soc-wm8753-objs := wm8753.o
@@ -10,6 +11,7 @@ snd-soc-tlv320aic3x-objs := tlv320aic3x.o
 
 obj-$(CONFIG_SND_SOC_AC97_CODEC)       += snd-soc-ac97.o
 obj-$(CONFIG_SND_SOC_UDA1380)  += snd-soc-uda1380.o
+obj-$(CONFIG_SND_SOC_WM8510)   += snd-soc-wm8510.o
 obj-$(CONFIG_SND_SOC_WM8731)   += snd-soc-wm8731.o
 obj-$(CONFIG_SND_SOC_WM8750)   += snd-soc-wm8750.o
 obj-$(CONFIG_SND_SOC_WM8753)   += snd-soc-wm8753.o
diff --git a/sound/soc/codecs/wm8510.c b/sound/soc/codecs/wm8510.c
new file mode 100644 (file)
index 0000000..6f54cb0
--- /dev/null
@@ -0,0 +1,836 @@
+/*
+ * wm8510.c  --  WM8510 ALSA Soc Audio driver
+ *
+ * Copyright 2006 Wolfson Microelectronics PLC.
+ *
+ * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
+ *
+ * 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/kernel.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 "wm8510.h"
+
+#define AUDIO_NAME "wm8510"
+#define WM8510_VERSION "0.6"
+
+/*
+ * Debug
+ */
+
+#define WM8510_DEBUG 0
+
+#ifdef WM8510_DEBUG
+#define dbg(format, arg...) \
+       printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
+#else
+#define dbg(format, arg...) do {} while (0)
+#endif
+#define err(format, arg...) \
+       printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
+#define info(format, arg...) \
+       printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
+#define warn(format, arg...) \
+       printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
+
+struct snd_soc_codec_device soc_codec_dev_wm8510;
+
+/*
+ * wm8510 register cache
+ * We can't read the WM8510 register space when we are
+ * using 2 wire for device control, so we cache them instead.
+ */
+static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
+       0x0000, 0x0000, 0x0000, 0x0000,
+       0x0050, 0x0000, 0x0140, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x00ff,
+       0x0000, 0x0000, 0x0100, 0x00ff,
+       0x0000, 0x0000, 0x012c, 0x002c,
+       0x002c, 0x002c, 0x002c, 0x0000,
+       0x0032, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000,
+       0x0038, 0x000b, 0x0032, 0x0000,
+       0x0008, 0x000c, 0x0093, 0x00e9,
+       0x0000, 0x0000, 0x0000, 0x0000,
+       0x0003, 0x0010, 0x0000, 0x0000,
+       0x0000, 0x0002, 0x0001, 0x0000,
+       0x0000, 0x0000, 0x0039, 0x0000,
+       0x0000,
+};
+
+/*
+ * read wm8510 register cache
+ */
+static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
+       unsigned int reg)
+{
+       u16 *cache = codec->reg_cache;
+       if (reg == WM8510_RESET)
+               return 0;
+       if (reg >= WM8510_CACHEREGNUM)
+               return -1;
+       return cache[reg];
+}
+
+/*
+ * write wm8510 register cache
+ */
+static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
+       u16 reg, unsigned int value)
+{
+       u16 *cache = codec->reg_cache;
+       if (reg >= WM8510_CACHEREGNUM)
+               return;
+       cache[reg] = value;
+}
+
+/*
+ * write to the WM8510 register space
+ */
+static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
+       unsigned int value)
+{
+       u8 data[2];
+
+       /* data is
+        *   D15..D9 WM8510 register offset
+        *   D8...D0 register data
+        */
+       data[0] = (reg << 1) | ((value >> 8) & 0x0001);
+       data[1] = value & 0x00ff;
+
+       wm8510_write_reg_cache(codec, reg, value);
+       if (codec->hw_write(codec->control_data, data, 2) == 2)
+               return 0;
+       else
+               return -EIO;
+}
+
+#define wm8510_reset(c)        wm8510_write(c, WM8510_RESET, 0)
+
+static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
+static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
+static const char *wm8510_alc[] = { "ALC", "Limiter" };
+
+static const struct soc_enum wm8510_enum[] = {
+       SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
+       SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
+       SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
+       SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
+};
+
+static const struct snd_kcontrol_new wm8510_snd_controls[] = {
+
+SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
+
+SOC_ENUM("DAC Companding", wm8510_enum[1]),
+SOC_ENUM("ADC Companding", wm8510_enum[0]),
+
+SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
+SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
+
+SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
+
+SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
+SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
+SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
+
+SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
+
+SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
+SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
+SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
+
+SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
+SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
+
+SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
+SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
+SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
+
+SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
+SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
+SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
+
+SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
+SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
+SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
+
+SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
+SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
+
+SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
+SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
+
+SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
+SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
+SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
+SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
+
+SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
+SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
+};
+
+/* add non dapm controls */
+static int wm8510_add_controls(struct snd_soc_codec *codec)
+{
+       int err, i;
+
+       for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
+               err = snd_ctl_add(codec->card,
+                               snd_soc_cnew(&wm8510_snd_controls[i], codec,
+                                       NULL));
+               if (err < 0)
+                       return err;
+       }
+
+       return 0;
+}
+
+/* Speaker Output Mixer */
+static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
+SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
+SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
+};
+
+/* Mono Output Mixer */
+static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
+SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
+SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8510_boost_controls[] = {
+SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 0),
+SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
+SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
+};
+
+static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
+SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
+SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
+SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
+SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
+       &wm8510_speaker_mixer_controls[0],
+       ARRAY_SIZE(wm8510_speaker_mixer_controls)),
+SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
+       &wm8510_mono_mixer_controls[0],
+       ARRAY_SIZE(wm8510_mono_mixer_controls)),
+SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
+SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
+SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
+SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
+SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
+SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
+
+SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0,
+                &wm8510_micpga_controls[0],
+                ARRAY_SIZE(wm8510_micpga_controls)),
+SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
+       &wm8510_boost_controls[0],
+       ARRAY_SIZE(wm8510_boost_controls)),
+
+SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
+
+SND_SOC_DAPM_INPUT("MICN"),
+SND_SOC_DAPM_INPUT("MICP"),
+SND_SOC_DAPM_INPUT("AUX"),
+SND_SOC_DAPM_OUTPUT("MONOOUT"),
+SND_SOC_DAPM_OUTPUT("SPKOUTP"),
+SND_SOC_DAPM_OUTPUT("SPKOUTN"),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+       /* Mono output mixer */
+       {"Mono Mixer", "PCM Playback Switch", "DAC"},
+       {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
+       {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
+
+       /* Speaker output mixer */
+       {"Speaker Mixer", "PCM Playback Switch", "DAC"},
+       {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
+       {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
+
+       /* Outputs */
+       {"Mono Out", NULL, "Mono Mixer"},
+       {"MONOOUT", NULL, "Mono Out"},
+       {"SpkN Out", NULL, "Speaker Mixer"},
+       {"SpkP Out", NULL, "Speaker Mixer"},
+       {"SPKOUTN", NULL, "SpkN Out"},
+       {"SPKOUTP", NULL, "SpkP Out"},
+
+       /* Microphone PGA */
+       {"Mic PGA", "MICN Switch", "MICN"},
+       {"Mic PGA", "MICP Switch", "MICP"},
+       { "Mic PGA", "AUX Switch", "Aux Input" },
+
+       /* Boost Mixer */
+       {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
+       {"Boost Mixer", "Mic Volume", "MICP"},
+       {"Boost Mixer", "Aux Volume", "Aux Input"},
+
+       {"ADC", NULL, "Boost Mixer"},
+};
+
+static int wm8510_add_widgets(struct snd_soc_codec *codec)
+{
+       snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
+                                 ARRAY_SIZE(wm8510_dapm_widgets));
+
+       snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+       snd_soc_dapm_new_widgets(codec);
+       return 0;
+}
+
+struct pll_ {
+       unsigned int pre_div:4; /* prescale - 1 */
+       unsigned int n:4;
+       unsigned int k;
+};
+
+static struct pll_ pll_div;
+
+/* The size in bits of the pll divide multiplied by 10
+ * to allow rounding later */
+#define FIXED_PLL_SIZE ((1 << 24) * 10)
+
+static void pll_factors(unsigned int target, unsigned int source)
+{
+       unsigned long long Kpart;
+       unsigned int K, Ndiv, Nmod;
+
+       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))
+               printk(KERN_WARNING
+                       "WM8510 N value %d outwith recommended range!d\n",
+                       Ndiv);
+
+       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;
+}
+
+static int wm8510_set_dai_pll(struct snd_soc_codec_dai *codec_dai,
+               int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       u16 reg;
+
+       if (freq_in == 0 || freq_out == 0) {
+               /* Clock CODEC directly from MCLK */
+               reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
+               wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
+
+               /* Turn off PLL */
+               reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
+               wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
+               return 0;
+       }
+
+       pll_factors(freq_out*8, freq_in);
+
+       wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
+       wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
+       wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
+       wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
+       reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
+       wm8510_write(codec, WM8510_POWER1, reg | 0x020);
+
+       /* Run CODEC from PLL instead of MCLK */
+       reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
+       wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
+
+       return 0;
+}
+
+/*
+ * Configure WM8510 clock dividers.
+ */
+static int wm8510_set_dai_clkdiv(struct snd_soc_codec_dai *codec_dai,
+               int div_id, int div)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       u16 reg;
+
+       switch (div_id) {
+       case WM8510_OPCLKDIV:
+               reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
+               wm8510_write(codec, WM8510_GPIO, reg | div);
+               break;
+       case WM8510_MCLKDIV:
+               reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
+               wm8510_write(codec, WM8510_CLOCK, reg | div);
+               break;
+       case WM8510_ADCCLK:
+               reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
+               wm8510_write(codec, WM8510_ADC, reg | div);
+               break;
+       case WM8510_DACCLK:
+               reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
+               wm8510_write(codec, WM8510_DAC, reg | div);
+               break;
+       case WM8510_BCLKDIV:
+               reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
+               wm8510_write(codec, WM8510_CLOCK, reg | div);
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int wm8510_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
+               unsigned int fmt)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       u16 iface = 0;
+       u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
+
+       /* set master/slave audio interface */
+       switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+       case SND_SOC_DAIFMT_CBM_CFM:
+               clk |= 0x0001;
+               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 |= 0x0010;
+               break;
+       case SND_SOC_DAIFMT_RIGHT_J:
+               break;
+       case SND_SOC_DAIFMT_LEFT_J:
+               iface |= 0x0008;
+               break;
+       case SND_SOC_DAIFMT_DSP_A:
+               iface |= 0x00018;
+               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 |= 0x0180;
+               break;
+       case SND_SOC_DAIFMT_IB_NF:
+               iface |= 0x0100;
+               break;
+       case SND_SOC_DAIFMT_NB_IF:
+               iface |= 0x0080;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       wm8510_write(codec, WM8510_IFACE, iface);
+       wm8510_write(codec, WM8510_CLOCK, clk);
+       return 0;
+}
+
+static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
+       struct snd_pcm_hw_params *params)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_device *socdev = rtd->socdev;
+       struct snd_soc_codec *codec = socdev->codec;
+       u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
+       u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
+
+       /* bit size */
+       switch (params_format(params)) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               break;
+       case SNDRV_PCM_FORMAT_S20_3LE:
+               iface |= 0x0020;
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               iface |= 0x0040;
+               break;
+       case SNDRV_PCM_FORMAT_S32_LE:
+               iface |= 0x0060;
+               break;
+       }
+
+       /* filter coefficient */
+       switch (params_rate(params)) {
+       case SNDRV_PCM_RATE_8000:
+               adn |= 0x5 << 1;
+               break;
+       case SNDRV_PCM_RATE_11025:
+               adn |= 0x4 << 1;
+               break;
+       case SNDRV_PCM_RATE_16000:
+               adn |= 0x3 << 1;
+               break;
+       case SNDRV_PCM_RATE_22050:
+               adn |= 0x2 << 1;
+               break;
+       case SNDRV_PCM_RATE_32000:
+               adn |= 0x1 << 1;
+               break;
+       case SNDRV_PCM_RATE_44100:
+       case SNDRV_PCM_RATE_48000:
+               break;
+       }
+
+       wm8510_write(codec, WM8510_IFACE, iface);
+       wm8510_write(codec, WM8510_ADD, adn);
+       return 0;
+}
+
+static int wm8510_mute(struct snd_soc_codec_dai *dai, int mute)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
+
+       if (mute)
+               wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
+       else
+               wm8510_write(codec, WM8510_DAC, mute_reg);
+       return 0;
+}
+
+/* liam need to make this lower power with dapm */
+static int wm8510_set_bias_level(struct snd_soc_codec *codec,
+       enum snd_soc_bias_level level)
+{
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               wm8510_write(codec, WM8510_POWER1, 0x1ff);
+               wm8510_write(codec, WM8510_POWER2, 0x1ff);
+               wm8510_write(codec, WM8510_POWER3, 0x1ff);
+               break;
+       case SND_SOC_BIAS_PREPARE:
+       case SND_SOC_BIAS_STANDBY:
+               break;
+       case SND_SOC_BIAS_OFF:
+               /* everything off, dac mute, inactive */
+               wm8510_write(codec, WM8510_POWER1, 0x0);
+               wm8510_write(codec, WM8510_POWER2, 0x0);
+               wm8510_write(codec, WM8510_POWER3, 0x0);
+               break;
+       }
+       codec->bias_level = level;
+       return 0;
+}
+
+#define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+               SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
+               SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+
+#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+       SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+struct snd_soc_codec_dai wm8510_dai = {
+       .name = "WM8510 HiFi",
+       .playback = {
+               .stream_name = "Playback",
+               .channels_min = 2,
+               .channels_max = 2,
+               .rates = WM8510_RATES,
+               .formats = WM8510_FORMATS,},
+       .capture = {
+               .stream_name = "Capture",
+               .channels_min = 2,
+               .channels_max = 2,
+               .rates = WM8510_RATES,
+               .formats = WM8510_FORMATS,},
+       .ops = {
+               .hw_params = wm8510_pcm_hw_params,
+       },
+       .dai_ops = {
+               .digital_mute = wm8510_mute,
+               .set_fmt = wm8510_set_dai_fmt,
+               .set_clkdiv = wm8510_set_dai_clkdiv,
+               .set_pll = wm8510_set_dai_pll,
+       },
+};
+EXPORT_SYMBOL_GPL(wm8510_dai);
+
+static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec = socdev->codec;
+
+       wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
+       return 0;
+}
+
+static int wm8510_resume(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec = socdev->codec;
+       int i;
+       u8 data[2];
+       u16 *cache = codec->reg_cache;
+
+       /* Sync reg_cache with the hardware */
+       for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
+               data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
+               data[1] = cache[i] & 0x00ff;
+               codec->hw_write(codec->control_data, data, 2);
+       }
+       wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+       wm8510_set_bias_level(codec, codec->suspend_bias_level);
+       return 0;
+}
+
+/*
+ * initialise the WM8510 driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+static int wm8510_init(struct snd_soc_device *socdev)
+{
+       struct snd_soc_codec *codec = socdev->codec;
+       int ret = 0;
+
+       codec->name = "WM8510";
+       codec->owner = THIS_MODULE;
+       codec->read = wm8510_read_reg_cache;
+       codec->write = wm8510_write;
+       codec->set_bias_level = wm8510_set_bias_level;
+       codec->dai = &wm8510_dai;
+       codec->num_dai = 1;
+       codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
+       codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
+
+       if (codec->reg_cache == NULL)
+               return -ENOMEM;
+
+       wm8510_reset(codec);
+
+       /* register pcms */
+       ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+       if (ret < 0) {
+               printk(KERN_ERR "wm8510: failed to create pcms\n");
+               goto pcm_err;
+       }
+
+       /* power on device */
+       wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+       wm8510_add_controls(codec);
+       wm8510_add_widgets(codec);
+       ret = snd_soc_register_card(socdev);
+       if (ret < 0) {
+               printk(KERN_ERR "wm8510: failed to register card\n");
+               goto card_err;
+       }
+       return ret;
+
+card_err:
+       snd_soc_free_pcms(socdev);
+       snd_soc_dapm_free(socdev);
+pcm_err:
+       kfree(codec->reg_cache);
+       return ret;
+}
+
+static struct snd_soc_device *wm8510_socdev;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+
+/*
+ * WM8510 2 wire address is 0x1a
+ */
+#define I2C_DRIVERID_WM8510 0xfefe /* liam -  need a proper id */
+
+static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
+
+/* Magic definition of all other variables and things */
+I2C_CLIENT_INSMOD;
+
+static struct i2c_driver wm8510_i2c_driver;
+static struct i2c_client client_template;
+
+/* If the i2c layer weren't so broken, we could pass this kind of data
+   around */
+
+static int wm8510_codec_probe(struct i2c_adapter *adap, int addr, int kind)
+{
+       struct snd_soc_device *socdev = wm8510_socdev;
+       struct wm8510_setup_data *setup = socdev->codec_data;
+       struct snd_soc_codec *codec = socdev->codec;
+       struct i2c_client *i2c;
+       int ret;
+
+       if (addr != setup->i2c_address)
+               return -ENODEV;
+
+       client_template.adapter = adap;
+       client_template.addr = addr;
+
+       i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
+       if (i2c == NULL) {
+               kfree(codec);
+               return -ENOMEM;
+       }
+       i2c_set_clientdata(i2c, codec);
+       codec->control_data = i2c;
+
+       ret = i2c_attach_client(i2c);
+       if (ret < 0) {
+               err("failed to attach codec at addr %x\n", addr);
+               goto err;
+       }
+
+       ret = wm8510_init(socdev);
+       if (ret < 0) {
+               err("failed to initialise WM8510\n");
+               goto err;
+       }
+       return ret;
+
+err:
+       kfree(codec);
+       kfree(i2c);
+       return ret;
+}
+
+static int wm8510_i2c_detach(struct i2c_client *client)
+{
+       struct snd_soc_codec *codec = i2c_get_clientdata(client);
+       i2c_detach_client(client);
+       kfree(codec->reg_cache);
+       kfree(client);
+       return 0;
+}
+
+static int wm8510_i2c_attach(struct i2c_adapter *adap)
+{
+       return i2c_probe(adap, &addr_data, wm8510_codec_probe);
+}
+
+/* corgi i2c codec control layer */
+static struct i2c_driver wm8510_i2c_driver = {
+       .driver = {
+               .name = "WM8510 I2C Codec",
+               .owner = THIS_MODULE,
+       },
+       .id =             I2C_DRIVERID_WM8510,
+       .attach_adapter = wm8510_i2c_attach,
+       .detach_client =  wm8510_i2c_detach,
+       .command =        NULL,
+};
+
+static struct i2c_client client_template = {
+       .name =   "WM8510",
+       .driver = &wm8510_i2c_driver,
+};
+#endif
+
+static int wm8510_probe(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct wm8510_setup_data *setup;
+       struct snd_soc_codec *codec;
+       int ret = 0;
+
+       info("WM8510 Audio Codec %s", WM8510_VERSION);
+
+       setup = socdev->codec_data;
+       codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+       if (codec == NULL)
+               return -ENOMEM;
+
+       socdev->codec = codec;
+       mutex_init(&codec->mutex);
+       INIT_LIST_HEAD(&codec->dapm_widgets);
+       INIT_LIST_HEAD(&codec->dapm_paths);
+
+       wm8510_socdev = socdev;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+       if (setup->i2c_address) {
+               normal_i2c[0] = setup->i2c_address;
+               codec->hw_write = (hw_write_t)i2c_master_send;
+               ret = i2c_add_driver(&wm8510_i2c_driver);
+               if (ret != 0)
+                       printk(KERN_ERR "can't add i2c driver");
+       }
+#else
+       /* Add other interfaces here */
+#endif
+       return ret;
+}
+
+/* power down chip */
+static int wm8510_remove(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec = socdev->codec;
+
+       if (codec->control_data)
+               wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+       snd_soc_free_pcms(socdev);
+       snd_soc_dapm_free(socdev);
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+       i2c_del_driver(&wm8510_i2c_driver);
+#endif
+       kfree(codec);
+
+       return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8510 = {
+       .probe =        wm8510_probe,
+       .remove =       wm8510_remove,
+       .suspend =      wm8510_suspend,
+       .resume =       wm8510_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
+
+MODULE_DESCRIPTION("ASoC WM8510 driver");
+MODULE_AUTHOR("Liam Girdwood");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8510.h b/sound/soc/codecs/wm8510.h
new file mode 100644 (file)
index 0000000..c862e7b
--- /dev/null
@@ -0,0 +1,103 @@
+/*
+ * wm8510.h  --  WM8510 Soc Audio driver
+ *
+ * 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.
+ */
+
+#ifndef _WM8510_H
+#define _WM8510_H
+
+/* WM8510 register space */
+
+#define WM8510_RESET           0x0
+#define WM8510_POWER1          0x1
+#define WM8510_POWER2          0x2
+#define WM8510_POWER3          0x3
+#define WM8510_IFACE           0x4
+#define WM8510_COMP                    0x5
+#define WM8510_CLOCK           0x6
+#define WM8510_ADD                     0x7
+#define WM8510_GPIO                    0x8
+#define WM8510_DAC                     0xa
+#define WM8510_DACVOL          0xb
+#define WM8510_ADC                     0xe
+#define WM8510_ADCVOL          0xf
+#define WM8510_EQ1                     0x12
+#define WM8510_EQ2                     0x13
+#define WM8510_EQ3                     0x14
+#define WM8510_EQ4                     0x15
+#define WM8510_EQ5                     0x16
+#define WM8510_DACLIM1         0x18
+#define WM8510_DACLIM2         0x19
+#define WM8510_NOTCH1          0x1b
+#define WM8510_NOTCH2          0x1c
+#define WM8510_NOTCH3          0x1d
+#define WM8510_NOTCH4          0x1e
+#define WM8510_ALC1                    0x20
+#define WM8510_ALC2                    0x21
+#define WM8510_ALC3                    0x22
+#define WM8510_NGATE           0x23
+#define WM8510_PLLN                    0x24
+#define WM8510_PLLK1           0x25
+#define WM8510_PLLK2           0x26
+#define WM8510_PLLK3           0x27
+#define WM8510_ATTEN           0x28
+#define WM8510_INPUT           0x2c
+#define WM8510_INPPGA          0x2d
+#define WM8510_ADCBOOST                0x2f
+#define WM8510_OUTPUT          0x31
+#define WM8510_SPKMIX          0x32
+#define WM8510_SPKVOL          0x36
+#define WM8510_MONOMIX         0x38
+
+#define WM8510_CACHEREGNUM     57
+
+/* Clock divider Id's */
+#define WM8510_OPCLKDIV                0
+#define WM8510_MCLKDIV         1
+#define WM8510_ADCCLK          2
+#define WM8510_DACCLK          3
+#define WM8510_BCLKDIV         4
+
+/* DAC clock dividers */
+#define WM8510_DACCLK_F2       (1 << 3)
+#define WM8510_DACCLK_F4       (0 << 3)
+
+/* ADC clock dividers */
+#define WM8510_ADCCLK_F2       (1 << 3)
+#define WM8510_ADCCLK_F4       (0 << 3)
+
+/* PLL Out dividers */
+#define WM8510_OPCLKDIV_1      (0 << 4)
+#define WM8510_OPCLKDIV_2      (1 << 4)
+#define WM8510_OPCLKDIV_3      (2 << 4)
+#define WM8510_OPCLKDIV_4      (3 << 4)
+
+/* BCLK clock dividers */
+#define WM8510_BCLKDIV_1       (0 << 2)
+#define WM8510_BCLKDIV_2       (1 << 2)
+#define WM8510_BCLKDIV_4       (2 << 2)
+#define WM8510_BCLKDIV_8       (3 << 2)
+#define WM8510_BCLKDIV_16      (4 << 2)
+#define WM8510_BCLKDIV_32      (5 << 2)
+
+/* MCLK clock dividers */
+#define WM8510_MCLKDIV_1       (0 << 5)
+#define WM8510_MCLKDIV_1_5     (1 << 5)
+#define WM8510_MCLKDIV_2       (2 << 5)
+#define WM8510_MCLKDIV_3       (3 << 5)
+#define WM8510_MCLKDIV_4       (4 << 5)
+#define WM8510_MCLKDIV_6       (5 << 5)
+#define WM8510_MCLKDIV_8       (6 << 5)
+#define WM8510_MCLKDIV_12      (7 << 5)
+
+struct wm8510_setup_data {
+       unsigned short i2c_address;
+};
+
+extern struct snd_soc_codec_dai wm8510_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8510;
+
+#endif