ALSA: ASoC: Add WM8580 CODEC driver

The WM8580 is an audio CODEC designed for DVD and surround sound
applications, offering three stereo DACs and a stereo ADC.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

4 files changed, 1103 insertions, 0 deletions

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index d7bacf6c529c..eb79c5cab47a 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -5,6 +5,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_AK4535
 	select SND_SOC_UDA1380
 	select SND_SOC_WM8510
+	select SND_SOC_WM8580
 	select SND_SOC_WM8731
 	select SND_SOC_WM8750
 	select SND_SOC_WM8753
@@ -38,6 +39,9 @@ config SND_SOC_UDA1380
 config SND_SOC_WM8510
 	tristate
 
+config SND_SOC_WM8580
+	tristate
+
 config SND_SOC_WM8731
 	tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 98808d945ded..7c694ca6b850 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -3,6 +3,7 @@ snd-soc-ad1980-objs := ad1980.o
 snd-soc-ak4535-objs := ak4535.o
 snd-soc-uda1380-objs := uda1380.o
 snd-soc-wm8510-objs := wm8510.o
+snd-soc-wm8580-objs := wm8580.o
 snd-soc-wm8731-objs := wm8731.o
 snd-soc-wm8750-objs := wm8750.o
 snd-soc-wm8753-objs := wm8753.o
@@ -19,6 +20,7 @@ obj-$(CONFIG_SND_SOC_AD1980)	+= snd-soc-ad1980.o
 obj-$(CONFIG_SND_SOC_AK4535)	+= snd-soc-ak4535.o
 obj-$(CONFIG_SND_SOC_UDA1380)	+= snd-soc-uda1380.o
 obj-$(CONFIG_SND_SOC_WM8510)	+= snd-soc-wm8510.o
+obj-$(CONFIG_SND_SOC_WM8580)	+= snd-soc-wm8580.o
 obj-$(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/wm8580.c b/sound/soc/codecs/wm8580.c
new file mode 100644
index 000000000000..df1ffbe305bf
--- /dev/null
+++ b/sound/soc/codecs/wm8580.c
@@ -0,0 +1,1055 @@
+/*
+ * wm8580.c  --  WM8580 ALSA Soc Audio driver
+ *
+ * Copyright 2008 Wolfson Microelectronics PLC.
+ *
+ *  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.
+ *
+ * Notes:
+ *  The WM8580 is a multichannel codec with S/PDIF support, featuring six
+ *  DAC channels and two ADC channels.
+ *
+ *  Currently only the primary audio interface is supported - S/PDIF and
+ *  the secondary audio interfaces are not.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.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/tlv.h>
+#include <sound/initval.h>
+#include <asm/div64.h>
+
+#include "wm8580.h"
+
+#define AUDIO_NAME "wm8580"
+#define WM8580_VERSION "0.1"
+
+struct pll_state {
+	unsigned int in;
+	unsigned int out;
+};
+
+/* codec private data */
+struct wm8580_priv {
+	struct pll_state a;
+	struct pll_state b;
+};
+
+/* WM8580 register space */
+#define WM8580_PLLA1                         0x00
+#define WM8580_PLLA2                         0x01
+#define WM8580_PLLA3                         0x02
+#define WM8580_PLLA4                         0x03
+#define WM8580_PLLB1                         0x04
+#define WM8580_PLLB2                         0x05
+#define WM8580_PLLB3                         0x06
+#define WM8580_PLLB4                         0x07
+#define WM8580_CLKSEL                        0x08
+#define WM8580_PAIF1                         0x09
+#define WM8580_PAIF2                         0x0A
+#define WM8580_SAIF1                         0x0B
+#define WM8580_PAIF3                         0x0C
+#define WM8580_PAIF4                         0x0D
+#define WM8580_SAIF2                         0x0E
+#define WM8580_DAC_CONTROL1                  0x0F
+#define WM8580_DAC_CONTROL2                  0x10
+#define WM8580_DAC_CONTROL3                  0x11
+#define WM8580_DAC_CONTROL4                  0x12
+#define WM8580_DAC_CONTROL5                  0x13
+#define WM8580_DIGITAL_ATTENUATION_DACL1     0x14
+#define WM8580_DIGITAL_ATTENUATION_DACR1     0x15
+#define WM8580_DIGITAL_ATTENUATION_DACL2     0x16
+#define WM8580_DIGITAL_ATTENUATION_DACR2     0x17
+#define WM8580_DIGITAL_ATTENUATION_DACL3     0x18
+#define WM8580_DIGITAL_ATTENUATION_DACR3     0x19
+#define WM8580_MASTER_DIGITAL_ATTENUATION    0x1C
+#define WM8580_ADC_CONTROL1                  0x1D
+#define WM8580_SPDTXCHAN0                    0x1E
+#define WM8580_SPDTXCHAN1                    0x1F
+#define WM8580_SPDTXCHAN2                    0x20
+#define WM8580_SPDTXCHAN3                    0x21
+#define WM8580_SPDTXCHAN4                    0x22
+#define WM8580_SPDTXCHAN5                    0x23
+#define WM8580_SPDMODE                       0x24
+#define WM8580_INTMASK                       0x25
+#define WM8580_GPO1                          0x26
+#define WM8580_GPO2                          0x27
+#define WM8580_GPO3                          0x28
+#define WM8580_GPO4                          0x29
+#define WM8580_GPO5                          0x2A
+#define WM8580_INTSTAT                       0x2B
+#define WM8580_SPDRXCHAN1                    0x2C
+#define WM8580_SPDRXCHAN2                    0x2D
+#define WM8580_SPDRXCHAN3                    0x2E
+#define WM8580_SPDRXCHAN4                    0x2F
+#define WM8580_SPDRXCHAN5                    0x30
+#define WM8580_SPDSTAT                       0x31
+#define WM8580_PWRDN1                        0x32
+#define WM8580_PWRDN2                        0x33
+#define WM8580_READBACK                      0x34
+#define WM8580_RESET                         0x35
+
+/* PLLB4 (register 7h) */
+#define WM8580_PLLB4_MCLKOUTSRC_MASK   0x60
+#define WM8580_PLLB4_MCLKOUTSRC_PLLA   0x20
+#define WM8580_PLLB4_MCLKOUTSRC_PLLB   0x40
+#define WM8580_PLLB4_MCLKOUTSRC_OSC    0x60
+
+#define WM8580_PLLB4_CLKOUTSRC_MASK    0x180
+#define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
+#define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
+#define WM8580_PLLB4_CLKOUTSRC_OSCCLK  0x180
+
+/* CLKSEL (register 8h) */
+#define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
+#define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
+#define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
+
+/* AIF control 1 (registers 9h-bh) */
+#define WM8580_AIF_RATE_MASK       0x7
+#define WM8580_AIF_RATE_128        0x0
+#define WM8580_AIF_RATE_192        0x1
+#define WM8580_AIF_RATE_256        0x2
+#define WM8580_AIF_RATE_384        0x3
+#define WM8580_AIF_RATE_512        0x4
+#define WM8580_AIF_RATE_768        0x5
+#define WM8580_AIF_RATE_1152       0x6
+
+#define WM8580_AIF_BCLKSEL_MASK   0x18
+#define WM8580_AIF_BCLKSEL_64     0x00
+#define WM8580_AIF_BCLKSEL_128    0x08
+#define WM8580_AIF_BCLKSEL_256    0x10
+#define WM8580_AIF_BCLKSEL_SYSCLK 0x18
+
+#define WM8580_AIF_MS             0x20
+
+#define WM8580_AIF_CLKSRC_MASK    0xc0
+#define WM8580_AIF_CLKSRC_PLLA    0x40
+#define WM8580_AIF_CLKSRC_PLLB    0x40
+#define WM8580_AIF_CLKSRC_MCLK    0xc0
+
+/* AIF control 2 (registers ch-eh) */
+#define WM8580_AIF_FMT_MASK    0x03
+#define WM8580_AIF_FMT_RIGHTJ  0x00
+#define WM8580_AIF_FMT_LEFTJ   0x01
+#define WM8580_AIF_FMT_I2S     0x02
+#define WM8580_AIF_FMT_DSP     0x03
+
+#define WM8580_AIF_LENGTH_MASK   0x0c
+#define WM8580_AIF_LENGTH_16     0x00
+#define WM8580_AIF_LENGTH_20     0x04
+#define WM8580_AIF_LENGTH_24     0x08
+#define WM8580_AIF_LENGTH_32     0x0c
+
+#define WM8580_AIF_LRP         0x10
+#define WM8580_AIF_BCP         0x20
+
+/* Powerdown Register 1 (register 32h) */
+#define WM8580_PWRDN1_PWDN     0x001
+#define WM8580_PWRDN1_ALLDACPD 0x040
+
+/* Powerdown Register 2 (register 33h) */
+#define WM8580_PWRDN2_OSSCPD   0x001
+#define WM8580_PWRDN2_PLLAPD   0x002
+#define WM8580_PWRDN2_PLLBPD   0x004
+#define WM8580_PWRDN2_SPDIFPD  0x008
+#define WM8580_PWRDN2_SPDIFTXD 0x010
+#define WM8580_PWRDN2_SPDIFRXD 0x020
+
+#define WM8580_DAC_CONTROL5_MUTEALL 0x10
+
+/*
+ * wm8580 register cache
+ * We can't read the WM8580 register space when we
+ * are using 2 wire for device control, so we cache them instead.
+ */
+static const u16 wm8580_reg[] = {
+	0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
+	0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
+	0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
+	0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
+	0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
+	0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
+	0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
+	0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
+	0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
+	0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
+	0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
+	0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
+	0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
+	0x0000, 0x0000 /*R53*/
+};
+
+/*
+ * read wm8580 register cache
+ */
+static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec,
+	unsigned int reg)
+{
+	u16 *cache = codec->reg_cache;
+	BUG_ON(reg > ARRAY_SIZE(wm8580_reg));
+	return cache[reg];
+}
+
+/*
+ * write wm8580 register cache
+ */
+static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec,
+	unsigned int reg, unsigned int value)
+{
+	u16 *cache = codec->reg_cache;
+
+	cache[reg] = value;
+}
+
+/*
+ * write to the WM8580 register space
+ */
+static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg,
+	unsigned int value)
+{
+	u8 data[2];
+
+	BUG_ON(reg > ARRAY_SIZE(wm8580_reg));
+
+	/* Registers are 9 bits wide */
+	value &= 0x1ff;
+
+	switch (reg) {
+	case WM8580_RESET:
+		/* Uncached */
+		break;
+	default:
+		if (value == wm8580_read_reg_cache(codec, reg))
+			return 0;
+	}
+
+	/* data is
+	 *   D15..D9 WM8580 register offset
+	 *   D8...D0 register data
+	 */
+	data[0] = (reg << 1) | ((value >> 8) & 0x0001);
+	data[1] = value & 0x00ff;
+
+	wm8580_write_reg_cache(codec, reg, value);
+	if (codec->hw_write(codec->control_data, data, 2) == 2)
+		return 0;
+	else
+		return -EIO;
+}
+
+static inline unsigned int wm8580_read(struct snd_soc_codec *codec,
+				       unsigned int reg)
+{
+	switch (reg) {
+	default:
+		return wm8580_read_reg_cache(codec, reg);
+	}
+}
+
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
+
+static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
+			 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	int reg = kcontrol->private_value & 0xff;
+	int reg2 = (kcontrol->private_value >> 24) & 0xff;
+	int ret;
+	u16 val;
+
+	/* Clear the register cache so we write without VU set */
+	wm8580_write_reg_cache(codec, reg, 0);
+	wm8580_write_reg_cache(codec, reg2, 0);
+
+	ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
+	if (ret < 0)
+		return ret;
+
+	/* Now write again with the volume update bit set */
+	val = wm8580_read_reg_cache(codec, reg);
+	wm8580_write(codec, reg, val | 0x0100);
+
+	val = wm8580_read_reg_cache(codec, reg2);
+	wm8580_write(codec, reg2, val | 0x0100);
+
+	return 0;
+}
+
+#define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
+{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
+	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+		SNDRV_CTL_ELEM_ACCESS_READWRITE,  \
+	.tlv.p = (tlv_array), \
+	.info = snd_soc_info_volsw_2r, \
+	.get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
+	.private_value = (reg_left) | ((shift) << 8)  |		\
+		((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
+
+static const struct snd_kcontrol_new wm8580_snd_controls[] = {
+SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
+			    WM8580_DIGITAL_ATTENUATION_DACL1,
+			    WM8580_DIGITAL_ATTENUATION_DACR1,
+			    0, 0xff, 0, dac_tlv),
+SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
+			    WM8580_DIGITAL_ATTENUATION_DACL2,
+			    WM8580_DIGITAL_ATTENUATION_DACR2,
+			    0, 0xff, 0, dac_tlv),
+SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
+			    WM8580_DIGITAL_ATTENUATION_DACL3,
+			    WM8580_DIGITAL_ATTENUATION_DACR3,
+			    0, 0xff, 0, dac_tlv),
+
+SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
+SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
+SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
+
+SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
+SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
+SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
+
+SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
+SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0),
+SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0),
+SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0),
+
+SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0),
+SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
+};
+
+/* Add non-DAPM controls */
+static int wm8580_add_controls(struct snd_soc_codec *codec)
+{
+	int err, i;
+
+	for (i = 0; i < ARRAY_SIZE(wm8580_snd_controls); i++) {
+		err = snd_ctl_add(codec->card,
+				  snd_soc_cnew(&wm8580_snd_controls[i],
+					       codec, NULL));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
+SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
+SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
+SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
+
+SND_SOC_DAPM_OUTPUT("VOUT1L"),
+SND_SOC_DAPM_OUTPUT("VOUT1R"),
+SND_SOC_DAPM_OUTPUT("VOUT2L"),
+SND_SOC_DAPM_OUTPUT("VOUT2R"),
+SND_SOC_DAPM_OUTPUT("VOUT3L"),
+SND_SOC_DAPM_OUTPUT("VOUT3R"),
+
+SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
+
+SND_SOC_DAPM_INPUT("AINL"),
+SND_SOC_DAPM_INPUT("AINR"),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+	{ "VOUT1L", NULL, "DAC1" },
+	{ "VOUT1R", NULL, "DAC1" },
+
+	{ "VOUT2L", NULL, "DAC2" },
+	{ "VOUT2R", NULL, "DAC2" },
+
+	{ "VOUT3L", NULL, "DAC3" },
+	{ "VOUT3R", NULL, "DAC3" },
+
+	{ "ADC", NULL, "AINL" },
+	{ "ADC", NULL, "AINR" },
+};
+
+static int wm8580_add_widgets(struct snd_soc_codec *codec)
+{
+	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets,
+				  ARRAY_SIZE(wm8580_dapm_widgets));
+
+	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+	snd_soc_dapm_new_widgets(codec);
+	return 0;
+}
+
+/* PLL divisors */
+struct _pll_div {
+	u32 prescale:1;
+	u32 postscale:1;
+	u32 freqmode:2;
+	u32 n:4;
+	u32 k:24;
+};
+
+/* The size in bits of the pll divide */
+#define FIXED_PLL_SIZE (1 << 22)
+
+/* PLL rate to output rate divisions */
+static struct {
+	unsigned int div;
+	unsigned int freqmode;
+	unsigned int postscale;
+} post_table[] = {
+	{  2,  0, 0 },
+	{  4,  0, 1 },
+	{  4,  1, 0 },
+	{  8,  1, 1 },
+	{  8,  2, 0 },
+	{ 16,  2, 1 },
+	{ 12,  3, 0 },
+	{ 24,  3, 1 }
+};
+
+static int pll_factors(struct _pll_div *pll_div, unsigned int target,
+		       unsigned int source)
+{
+	u64 Kpart;
+	unsigned int K, Ndiv, Nmod;
+	int i;
+
+	pr_debug("wm8580: PLL %dHz->%dHz\n", source, target);
+
+	/* Scale the output frequency up; the PLL should run in the
+	 * region of 90-100MHz.
+	 */
+	for (i = 0; i < ARRAY_SIZE(post_table); i++) {
+		if (target * post_table[i].div >=  90000000 &&
+		    target * post_table[i].div <= 100000000) {
+			pll_div->freqmode = post_table[i].freqmode;
+			pll_div->postscale = post_table[i].postscale;
+			target *= post_table[i].div;
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(post_table)) {
+		printk(KERN_ERR "wm8580: Unable to scale output frequency "
+		       "%u\n", target);
+		return -EINVAL;
+	}
+
+	Ndiv = target / source;
+
+	if (Ndiv < 5) {
+		source /= 2;
+		pll_div->prescale = 1;
+		Ndiv = target / source;
+	} else
+		pll_div->prescale = 0;
+
+	if ((Ndiv < 5) || (Ndiv > 13)) {
+		printk(KERN_ERR
+			"WM8580 N=%d outside supported range\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;
+
+	pll_div->k = K;
+
+	pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
+		 pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
+		 pll_div->postscale);
+
+	return 0;
+}
+
+static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai,
+		int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+	int offset;
+	struct snd_soc_codec *codec = codec_dai->codec;
+	struct wm8580_priv *wm8580 = codec->private_data;
+	struct pll_state *state;
+	struct _pll_div pll_div;
+	unsigned int reg;
+	unsigned int pwr_mask;
+	int ret;
+
+	/* GCC isn't able to work out the ifs below for initialising/using
+	 * pll_div so suppress warnings.
+	 */
+	memset(&pll_div, 0, sizeof(pll_div));
+
+	switch (pll_id) {
+	case WM8580_PLLA:
+		state = &wm8580->a;
+		offset = 0;
+		pwr_mask = WM8580_PWRDN2_PLLAPD;
+		break;
+	case WM8580_PLLB:
+		state = &wm8580->b;
+		offset = 4;
+		pwr_mask = WM8580_PWRDN2_PLLBPD;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	if (freq_in && freq_out) {
+		ret = pll_factors(&pll_div, freq_out, freq_in);
+		if (ret != 0)
+			return ret;
+	}
+
+	state->in = freq_in;
+	state->out = freq_out;
+
+	/* Always disable the PLL - it is not safe to leave it running
+	 * while reprogramming it.
+	 */
+	reg = wm8580_read(codec, WM8580_PWRDN2);
+	wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask);
+
+	if (!freq_in || !freq_out)
+		return 0;
+
+	wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
+	wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff);
+	wm8580_write(codec, WM8580_PLLA3 + offset,
+		     (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
+
+	reg = wm8580_read(codec, WM8580_PLLA4 + offset);
+	reg &= ~0x3f;
+	reg |= pll_div.prescale | pll_div.postscale << 1 |
+		pll_div.freqmode << 4;
+
+	wm8580_write(codec, WM8580_PLLA4 + offset, reg);
+
+	/* All done, turn it on */
+	reg = wm8580_read(codec, WM8580_PWRDN2);
+	wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
+
+	return 0;
+}
+
+/*
+ * Set PCM DAI bit size and sample rate.
+ */
+static int wm8580_paif_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_dai_link *dai = rtd->dai;
+	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_codec *codec = socdev->codec;
+	u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->codec_dai->id);
+
+	paifb &= ~WM8580_AIF_LENGTH_MASK;
+	/* bit size */
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		break;
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		paifb |= WM8580_AIF_LENGTH_20;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		paifb |= WM8580_AIF_LENGTH_24;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		paifb |= WM8580_AIF_LENGTH_24;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	wm8580_write(codec, WM8580_PAIF3 + dai->codec_dai->id, paifb);
+	return 0;
+}
+
+static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
+				      unsigned int fmt)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	unsigned int aifa;
+	unsigned int aifb;
+	int can_invert_lrclk;
+
+	aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id);
+	aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id);
+
+	aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBS_CFS:
+		aifa &= ~WM8580_AIF_MS;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFM:
+		aifa |= WM8580_AIF_MS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		can_invert_lrclk = 1;
+		aifb |= WM8580_AIF_FMT_I2S;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		can_invert_lrclk = 1;
+		aifb |= WM8580_AIF_FMT_RIGHTJ;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		can_invert_lrclk = 1;
+		aifb |= WM8580_AIF_FMT_LEFTJ;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		can_invert_lrclk = 0;
+		aifb |= WM8580_AIF_FMT_DSP;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		can_invert_lrclk = 0;
+		aifb |= WM8580_AIF_FMT_DSP;
+		aifb |= WM8580_AIF_LRP;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+
+	case SND_SOC_DAIFMT_IB_IF:
+		if (!can_invert_lrclk)
+			return -EINVAL;
+		aifb |= WM8580_AIF_BCP;
+		aifb |= WM8580_AIF_LRP;
+		break;
+
+	case SND_SOC_DAIFMT_IB_NF:
+		aifb |= WM8580_AIF_BCP;
+		break;
+
+	case SND_SOC_DAIFMT_NB_IF:
+		if (!can_invert_lrclk)
+			return -EINVAL;
+		aifb |= WM8580_AIF_LRP;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa);
+	wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb);
+
+	return 0;
+}
+
+static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
+				 int div_id, int div)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	unsigned int reg;
+
+	switch (div_id) {
+	case WM8580_MCLK:
+		reg = wm8580_read(codec, WM8580_PLLB4);
+		reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
+
+		switch (div) {
+		case WM8580_CLKSRC_MCLK:
+			/* Input */
+			break;
+
+		case WM8580_CLKSRC_PLLA:
+			reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
+			break;
+		case WM8580_CLKSRC_PLLB:
+			reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
+			break;
+
+		case WM8580_CLKSRC_OSC:
+			reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+		wm8580_write(codec, WM8580_PLLB4, reg);
+		break;
+
+	case WM8580_DAC_CLKSEL:
+		reg = wm8580_read(codec, WM8580_CLKSEL);
+		reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK;
+
+		switch (div) {
+		case WM8580_CLKSRC_MCLK:
+			break;
+
+		case WM8580_CLKSRC_PLLA:
+			reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA;
+			break;
+
+		case WM8580_CLKSRC_PLLB:
+			reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+		wm8580_write(codec, WM8580_CLKSEL, reg);
+		break;
+
+	case WM8580_CLKOUTSRC:
+		reg = wm8580_read(codec, WM8580_PLLB4);
+		reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
+
+		switch (div) {
+		case WM8580_CLKSRC_NONE:
+			break;
+
+		case WM8580_CLKSRC_PLLA:
+			reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
+			break;
+
+		case WM8580_CLKSRC_PLLB:
+			reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
+			break;
+
+		case WM8580_CLKSRC_OSC:
+			reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+		wm8580_write(codec, WM8580_PLLB4, reg);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	unsigned int reg;
+
+	reg = wm8580_read(codec, WM8580_DAC_CONTROL5);
+
+	if (mute)
+		reg |= WM8580_DAC_CONTROL5_MUTEALL;
+	else
+		reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
+
+	wm8580_write(codec, WM8580_DAC_CONTROL5, reg);
+
+	return 0;
+}
+
+static int wm8580_set_bias_level(struct snd_soc_codec *codec,
+	enum snd_soc_bias_level level)
+{
+	u16 reg;
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+	case SND_SOC_BIAS_PREPARE:
+	case SND_SOC_BIAS_STANDBY:
+		break;
+	case SND_SOC_BIAS_OFF:
+		reg = wm8580_read(codec, WM8580_PWRDN1);
+		wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
+		break;
+	}
+	codec->bias_level = level;
+	return 0;
+}
+
+#define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+struct snd_soc_dai wm8580_dai[] = {
+	{
+		.name = "WM8580 PAIFRX",
+		.id = 0,
+		.playback = {
+			.stream_name = "Playback",
+			.channels_min = 1,
+			.channels_max = 6,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = WM8580_FORMATS,
+		},
+		.ops = {
+			 .hw_params = wm8580_paif_hw_params,
+		 },
+		.dai_ops = {
+			 .set_fmt = wm8580_set_paif_dai_fmt,
+			 .set_clkdiv = wm8580_set_dai_clkdiv,
+			 .set_pll = wm8580_set_dai_pll,
+			 .digital_mute = wm8580_digital_mute,
+		 },
+	},
+	{
+		.name = "WM8580 PAIFTX",
+		.id = 1,
+		.capture = {
+			.stream_name = "Capture",
+			.channels_min = 2,
+			.channels_max = 2,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = WM8580_FORMATS,
+		},
+		.ops = {
+			 .hw_params = wm8580_paif_hw_params,
+		 },
+		.dai_ops = {
+			 .set_fmt = wm8580_set_paif_dai_fmt,
+			 .set_clkdiv = wm8580_set_dai_clkdiv,
+			 .set_pll = wm8580_set_dai_pll,
+		 },
+	},
+};
+EXPORT_SYMBOL_GPL(wm8580_dai);
+
+/*
+ * initialise the WM8580 driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+static int wm8580_init(struct snd_soc_device *socdev)
+{
+	struct snd_soc_codec *codec = socdev->codec;
+	int ret = 0;
+
+	codec->name = "WM8580";
+	codec->owner = THIS_MODULE;
+	codec->read = wm8580_read_reg_cache;
+	codec->write = wm8580_write;
+	codec->set_bias_level = wm8580_set_bias_level;
+	codec->dai = wm8580_dai;
+	codec->num_dai = ARRAY_SIZE(wm8580_dai);
+	codec->reg_cache_size = ARRAY_SIZE(wm8580_reg);
+	codec->reg_cache = kmemdup(wm8580_reg, sizeof(wm8580_reg),
+				   GFP_KERNEL);
+
+	if (codec->reg_cache == NULL)
+		return -ENOMEM;
+
+	/* Get the codec into a known state */
+	wm8580_write(codec, WM8580_RESET, 0);
+
+	/* Power up and get individual control of the DACs */
+	wm8580_write(codec, WM8580_PWRDN1, wm8580_read(codec, WM8580_PWRDN1) &
+		     ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD));
+
+	/* Make VMID high impedence */
+	wm8580_write(codec, WM8580_ADC_CONTROL1,
+		     wm8580_read(codec,  WM8580_ADC_CONTROL1) & ~0x100);
+
+	/* register pcms */
+	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1,
+			       SNDRV_DEFAULT_STR1);
+	if (ret < 0) {
+		printk(KERN_ERR "wm8580: failed to create pcms\n");
+		goto pcm_err;
+	}
+
+	wm8580_add_controls(codec);
+	wm8580_add_widgets(codec);
+
+	ret = snd_soc_register_card(socdev);
+	if (ret < 0) {
+		printk(KERN_ERR "wm8580: 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;
+}
+
+/* If the i2c layer weren't so broken, we could pass this kind of data
+   around */
+static struct snd_soc_device *wm8580_socdev;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+
+/*
+ * WM8580 2 wire address is determined by GPIO5
+ * state during powerup.
+ *    low  = 0x1a
+ *    high = 0x1b
+ */
+static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
+
+/* Magic definition of all other variables and things */
+I2C_CLIENT_INSMOD;
+
+static struct i2c_driver wm8580_i2c_driver;
+static struct i2c_client client_template;
+
+static int wm8580_codec_probe(struct i2c_adapter *adap, int addr, int kind)
+{
+	struct snd_soc_device *socdev = wm8580_socdev;
+	struct wm8580_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) {
+		dev_err(&i2c->dev, "failed to attach codec at addr %x\n", addr);
+		goto err;
+	}
+
+	ret = wm8580_init(socdev);
+	if (ret < 0) {
+		dev_err(&i2c->dev, "failed to initialise WM8580\n");
+		goto err;
+	}
+
+	return ret;
+
+err:
+	kfree(codec);
+	kfree(i2c);
+	return ret;
+}
+
+static int wm8580_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 wm8580_i2c_attach(struct i2c_adapter *adap)
+{
+	return i2c_probe(adap, &addr_data, wm8580_codec_probe);
+}
+
+/* corgi i2c codec control layer */
+static struct i2c_driver wm8580_i2c_driver = {
+	.driver = {
+		.name = "WM8580 I2C Codec",
+		.owner = THIS_MODULE,
+	},
+	.attach_adapter = wm8580_i2c_attach,
+	.detach_client =  wm8580_i2c_detach,
+	.command =        NULL,
+};
+
+static struct i2c_client client_template = {
+	.name =   "WM8580",
+	.driver = &wm8580_i2c_driver,
+};
+#endif
+
+static int wm8580_probe(struct platform_device *pdev)
+{
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct wm8580_setup_data *setup;
+	struct snd_soc_codec *codec;
+	struct wm8580_priv *wm8580;
+	int ret = 0;
+
+	pr_info("WM8580 Audio Codec %s\n", WM8580_VERSION);
+
+	setup = socdev->codec_data;
+	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+	if (codec == NULL)
+		return -ENOMEM;
+
+	wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
+	if (wm8580 == NULL) {
+		kfree(codec);
+		return -ENOMEM;
+	}
+
+	codec->private_data = wm8580;
+	socdev->codec = codec;
+	mutex_init(&codec->mutex);
+	INIT_LIST_HEAD(&codec->dapm_widgets);
+	INIT_LIST_HEAD(&codec->dapm_paths);
+	wm8580_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(&wm8580_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 wm8580_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)
+		wm8580_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(&wm8580_i2c_driver);
+#endif
+	kfree(codec->private_data);
+	kfree(codec);
+
+	return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8580 = {
+	.probe = 	wm8580_probe,
+	.remove = 	wm8580_remove,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
+
+MODULE_DESCRIPTION("ASoC WM8580 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8580.h b/sound/soc/codecs/wm8580.h
new file mode 100644
index 000000000000..589ddaba21d7
--- /dev/null
+++ b/sound/soc/codecs/wm8580.h
@@ -0,0 +1,42 @@
+/*
+ * wm8580.h  --  audio driver for WM8580
+ *
+ * Copyright 2008 Samsung Electronics.
+ * Author: Ryu Euiyoul
+ *         ryu.real@gmail.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.
+ *
+ */
+
+#ifndef _WM8580_H
+#define _WM8580_H
+
+#define WM8580_PLLA  1
+#define WM8580_PLLB  2
+
+#define WM8580_MCLK       1
+#define WM8580_DAC_CLKSEL 2
+#define WM8580_CLKOUTSRC  3
+
+#define WM8580_CLKSRC_MCLK 1
+#define WM8580_CLKSRC_PLLA 2
+#define WM8580_CLKSRC_PLLB 3
+#define WM8580_CLKSRC_OSC  4
+#define WM8580_CLKSRC_NONE 5
+
+struct wm8580_setup_data {
+	unsigned short i2c_address;
+};
+
+#define WM8580_DAI_PAIFRX 0
+#define WM8580_DAI_PAIFTX 1
+
+extern struct snd_soc_dai wm8580_dai[];
+extern struct snd_soc_codec_device soc_codec_dev_wm8580;
+
+#endif
+