Merge branch 'linus' into timers/nohz

1 files changed, 852 insertions, 0 deletions

diff --git a/sound/soc/codecs/uda1380.c b/sound/soc/codecs/uda1380.c
new file mode 100644
index 00000000000..a52d6d9e007
--- /dev/null
+++ b/sound/soc/codecs/uda1380.c
@@ -0,0 +1,852 @@
+/*
+ * uda1380.c - Philips UDA1380 ALSA 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.
+ *
+ * Copyright (c) 2007 Philipp Zabel <philipp.zabel@gmail.com>
+ * Improved support for DAPM and audio routing/mixing capabilities,
+ * added TLV support.
+ *
+ * Modified by Richard Purdie <richard@openedhand.com> to fit into SoC
+ * codec model.
+ *
+ * Copyright (c) 2005 Giorgio Padrin <giorgio@mandarinlogiq.org>
+ * Copyright 2005 Openedhand Ltd.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/ioctl.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <sound/info.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+
+#include "uda1380.h"
+
+#define UDA1380_VERSION "0.6"
+#define AUDIO_NAME "uda1380"
+
+/*
+ * uda1380 register cache
+ */
+static const u16 uda1380_reg[UDA1380_CACHEREGNUM] = {
+	0x0502, 0x0000, 0x0000, 0x3f3f,
+	0x0202, 0x0000, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+	0x0000, 0xff00, 0x0000, 0x4800,
+	0x0000, 0x0000, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+	0x0000, 0x0000, 0x0000, 0x0000,
+	0x0000, 0x8000, 0x0002, 0x0000,
+};
+
+/*
+ * read uda1380 register cache
+ */
+static inline unsigned int uda1380_read_reg_cache(struct snd_soc_codec *codec,
+	unsigned int reg)
+{
+	u16 *cache = codec->reg_cache;
+	if (reg == UDA1380_RESET)
+		return 0;
+	if (reg >= UDA1380_CACHEREGNUM)
+		return -1;
+	return cache[reg];
+}
+
+/*
+ * write uda1380 register cache
+ */
+static inline void uda1380_write_reg_cache(struct snd_soc_codec *codec,
+	u16 reg, unsigned int value)
+{
+	u16 *cache = codec->reg_cache;
+	if (reg >= UDA1380_CACHEREGNUM)
+		return;
+	cache[reg] = value;
+}
+
+/*
+ * write to the UDA1380 register space
+ */
+static int uda1380_write(struct snd_soc_codec *codec, unsigned int reg,
+	unsigned int value)
+{
+	u8 data[3];
+
+	/* data is
+	 *   data[0] is register offset
+	 *   data[1] is MS byte
+	 *   data[2] is LS byte
+	 */
+	data[0] = reg;
+	data[1] = (value & 0xff00) >> 8;
+	data[2] = value & 0x00ff;
+
+	uda1380_write_reg_cache(codec, reg, value);
+
+	/* the interpolator & decimator regs must only be written when the
+	 * codec DAI is active.
+	 */
+	if (!codec->active && (reg >= UDA1380_MVOL))
+		return 0;
+	pr_debug("uda1380: hw write %x val %x\n", reg, value);
+	if (codec->hw_write(codec->control_data, data, 3) == 3) {
+		unsigned int val;
+		i2c_master_send(codec->control_data, data, 1);
+		i2c_master_recv(codec->control_data, data, 2);
+		val = (data[0]<<8) | data[1];
+		if (val != value) {
+			pr_debug("uda1380: READ BACK VAL %x\n",
+					(data[0]<<8) | data[1]);
+			return -EIO;
+		}
+		return 0;
+	} else
+		return -EIO;
+}
+
+#define uda1380_reset(c)	uda1380_write(c, UDA1380_RESET, 0)
+
+/* declarations of ALSA reg_elem_REAL controls */
+static const char *uda1380_deemp[] = {
+	"None",
+	"32kHz",
+	"44.1kHz",
+	"48kHz",
+	"96kHz",
+};
+static const char *uda1380_input_sel[] = {
+	"Line",
+	"Mic + Line R",
+	"Line L",
+	"Mic",
+};
+static const char *uda1380_output_sel[] = {
+	"DAC",
+	"Analog Mixer",
+};
+static const char *uda1380_spf_mode[] = {
+	"Flat",
+	"Minimum1",
+	"Minimum2",
+	"Maximum"
+};
+static const char *uda1380_capture_sel[] = {
+	"ADC",
+	"Digital Mixer"
+};
+static const char *uda1380_sel_ns[] = {
+	"3rd-order",
+	"5th-order"
+};
+static const char *uda1380_mix_control[] = {
+	"off",
+	"PCM only",
+	"before sound processing",
+	"after sound processing"
+};
+static const char *uda1380_sdet_setting[] = {
+	"3200",
+	"4800",
+	"9600",
+	"19200"
+};
+static const char *uda1380_os_setting[] = {
+	"single-speed",
+	"double-speed (no mixing)",
+	"quad-speed (no mixing)"
+};
+
+static const struct soc_enum uda1380_deemp_enum[] = {
+	SOC_ENUM_SINGLE(UDA1380_DEEMP, 8, 5, uda1380_deemp),
+	SOC_ENUM_SINGLE(UDA1380_DEEMP, 0, 5, uda1380_deemp),
+};
+static const struct soc_enum uda1380_input_sel_enum =
+	SOC_ENUM_SINGLE(UDA1380_ADC, 2, 4, uda1380_input_sel);		/* SEL_MIC, SEL_LNA */
+static const struct soc_enum uda1380_output_sel_enum =
+	SOC_ENUM_SINGLE(UDA1380_PM, 7, 2, uda1380_output_sel);		/* R02_EN_AVC */
+static const struct soc_enum uda1380_spf_enum =
+	SOC_ENUM_SINGLE(UDA1380_MODE, 14, 4, uda1380_spf_mode);		/* M */
+static const struct soc_enum uda1380_capture_sel_enum =
+	SOC_ENUM_SINGLE(UDA1380_IFACE, 6, 2, uda1380_capture_sel);	/* SEL_SOURCE */
+static const struct soc_enum uda1380_sel_ns_enum =
+	SOC_ENUM_SINGLE(UDA1380_MIXER, 14, 2, uda1380_sel_ns);		/* SEL_NS */
+static const struct soc_enum uda1380_mix_enum =
+	SOC_ENUM_SINGLE(UDA1380_MIXER, 12, 4, uda1380_mix_control);	/* MIX, MIX_POS */
+static const struct soc_enum uda1380_sdet_enum =
+	SOC_ENUM_SINGLE(UDA1380_MIXER, 4, 4, uda1380_sdet_setting);	/* SD_VALUE */
+static const struct soc_enum uda1380_os_enum =
+	SOC_ENUM_SINGLE(UDA1380_MIXER, 0, 3, uda1380_os_setting);	/* OS */
+
+/*
+ * from -48 dB in 1.5 dB steps (mute instead of -49.5 dB)
+ */
+static DECLARE_TLV_DB_SCALE(amix_tlv, -4950, 150, 1);
+
+/*
+ * from -78 dB in 1 dB steps (3 dB steps, really. LSB are ignored),
+ * from -66 dB in 0.5 dB steps (2 dB steps, really) and
+ * from -52 dB in 0.25 dB steps
+ */
+static const unsigned int mvol_tlv[] = {
+	TLV_DB_RANGE_HEAD(3),
+	0, 15, TLV_DB_SCALE_ITEM(-8200, 100, 1),
+	16, 43, TLV_DB_SCALE_ITEM(-6600, 50, 0),
+	44, 252, TLV_DB_SCALE_ITEM(-5200, 25, 0),
+};
+
+/*
+ * from -72 dB in 1.5 dB steps (6 dB steps really),
+ * from -66 dB in 0.75 dB steps (3 dB steps really),
+ * from -60 dB in 0.5 dB steps (2 dB steps really) and
+ * from -46 dB in 0.25 dB steps
+ */
+static const unsigned int vc_tlv[] = {
+	TLV_DB_RANGE_HEAD(4),
+	0, 7, TLV_DB_SCALE_ITEM(-7800, 150, 1),
+	8, 15, TLV_DB_SCALE_ITEM(-6600, 75, 0),
+	16, 43, TLV_DB_SCALE_ITEM(-6000, 50, 0),
+	44, 228, TLV_DB_SCALE_ITEM(-4600, 25, 0),
+};
+
+/* from 0 to 6 dB in 2 dB steps if SPF mode != flat */
+static DECLARE_TLV_DB_SCALE(tr_tlv, 0, 200, 0);
+
+/* from 0 to 24 dB in 2 dB steps, if SPF mode == maximum, otherwise cuts
+ * off at 18 dB max) */
+static DECLARE_TLV_DB_SCALE(bb_tlv, 0, 200, 0);
+
+/* from -63 to 24 dB in 0.5 dB steps (-128...48) */
+static DECLARE_TLV_DB_SCALE(dec_tlv, -6400, 50, 1);
+
+/* from 0 to 24 dB in 3 dB steps */
+static DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
+
+/* from 0 to 30 dB in 2 dB steps */
+static DECLARE_TLV_DB_SCALE(vga_tlv, 0, 200, 0);
+
+static const struct snd_kcontrol_new uda1380_snd_controls[] = {
+	SOC_DOUBLE_TLV("Analog Mixer Volume", UDA1380_AMIX, 0, 8, 44, 1, amix_tlv),	/* AVCR, AVCL */
+	SOC_DOUBLE_TLV("Master Playback Volume", UDA1380_MVOL, 0, 8, 252, 1, mvol_tlv),	/* MVCL, MVCR */
+	SOC_SINGLE_TLV("ADC Playback Volume", UDA1380_MIXVOL, 8, 228, 1, vc_tlv),	/* VC2 */
+	SOC_SINGLE_TLV("PCM Playback Volume", UDA1380_MIXVOL, 0, 228, 1, vc_tlv),	/* VC1 */
+	SOC_ENUM("Sound Processing Filter", uda1380_spf_enum),				/* M */
+	SOC_DOUBLE_TLV("Tone Control - Treble", UDA1380_MODE, 4, 12, 3, 0, tr_tlv), 	/* TRL, TRR */
+	SOC_DOUBLE_TLV("Tone Control - Bass", UDA1380_MODE, 0, 8, 15, 0, bb_tlv),	/* BBL, BBR */
+/**/	SOC_SINGLE("Master Playback Switch", UDA1380_DEEMP, 14, 1, 1),		/* MTM */
+	SOC_SINGLE("ADC Playback Switch", UDA1380_DEEMP, 11, 1, 1),		/* MT2 from decimation filter */
+	SOC_ENUM("ADC Playback De-emphasis", uda1380_deemp_enum[0]),		/* DE2 */
+	SOC_SINGLE("PCM Playback Switch", UDA1380_DEEMP, 3, 1, 1),		/* MT1, from digital data input */
+	SOC_ENUM("PCM Playback De-emphasis", uda1380_deemp_enum[1]),		/* DE1 */
+	SOC_SINGLE("DAC Polarity inverting Switch", UDA1380_MIXER, 15, 1, 0),	/* DA_POL_INV */
+	SOC_ENUM("Noise Shaper", uda1380_sel_ns_enum),				/* SEL_NS */
+	SOC_ENUM("Digital Mixer Signal Control", uda1380_mix_enum),		/* MIX_POS, MIX */
+	SOC_SINGLE("Silence Switch", UDA1380_MIXER, 7, 1, 0),			/* SILENCE, force DAC output to silence */
+	SOC_SINGLE("Silence Detector Switch", UDA1380_MIXER, 6, 1, 0),		/* SDET_ON */
+	SOC_ENUM("Silence Detector Setting", uda1380_sdet_enum),		/* SD_VALUE */
+	SOC_ENUM("Oversampling Input", uda1380_os_enum),			/* OS */
+	SOC_DOUBLE_S8_TLV("ADC Capture Volume", UDA1380_DEC, -128, 48, dec_tlv),	/* ML_DEC, MR_DEC */
+/**/	SOC_SINGLE("ADC Capture Switch", UDA1380_PGA, 15, 1, 1),		/* MT_ADC */
+	SOC_DOUBLE_TLV("Line Capture Volume", UDA1380_PGA, 0, 8, 8, 0, pga_tlv), /* PGA_GAINCTRLL, PGA_GAINCTRLR */
+	SOC_SINGLE("ADC Polarity inverting Switch", UDA1380_ADC, 12, 1, 0),	/* ADCPOL_INV */
+	SOC_SINGLE_TLV("Mic Capture Volume", UDA1380_ADC, 8, 15, 0, vga_tlv),	/* VGA_CTRL */
+	SOC_SINGLE("DC Filter Bypass Switch", UDA1380_ADC, 1, 1, 0),		/* SKIP_DCFIL (before decimator) */
+	SOC_SINGLE("DC Filter Enable Switch", UDA1380_ADC, 0, 1, 0),		/* EN_DCFIL (at output of decimator) */
+	SOC_SINGLE("AGC Timing", UDA1380_AGC, 8, 7, 0),			/* TODO: enum, see table 62 */
+	SOC_SINGLE("AGC Target level", UDA1380_AGC, 2, 3, 1),			/* AGC_LEVEL */
+	/* -5.5, -8, -11.5, -14 dBFS */
+	SOC_SINGLE("AGC Switch", UDA1380_AGC, 0, 1, 0),
+};
+
+/* add non dapm controls */
+static int uda1380_add_controls(struct snd_soc_codec *codec)
+{
+	int err, i;
+
+	for (i = 0; i < ARRAY_SIZE(uda1380_snd_controls); i++) {
+		err = snd_ctl_add(codec->card,
+			snd_soc_cnew(&uda1380_snd_controls[i], codec, NULL));
+		if (err < 0)
+			return err;
+	}
+
+	return 0;
+}
+
+/* Input mux */
+static const struct snd_kcontrol_new uda1380_input_mux_control =
+	SOC_DAPM_ENUM("Route", uda1380_input_sel_enum);
+
+/* Output mux */
+static const struct snd_kcontrol_new uda1380_output_mux_control =
+	SOC_DAPM_ENUM("Route", uda1380_output_sel_enum);
+
+/* Capture mux */
+static const struct snd_kcontrol_new uda1380_capture_mux_control =
+	SOC_DAPM_ENUM("Route", uda1380_capture_sel_enum);
+
+
+static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
+	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
+		&uda1380_input_mux_control),
+	SND_SOC_DAPM_MUX("Output Mux", SND_SOC_NOPM, 0, 0,
+		&uda1380_output_mux_control),
+	SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0,
+		&uda1380_capture_mux_control),
+	SND_SOC_DAPM_PGA("Left PGA", UDA1380_PM, 3, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Right PGA", UDA1380_PM, 1, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Mic LNA", UDA1380_PM, 4, 0, NULL, 0),
+	SND_SOC_DAPM_ADC("Left ADC", "Left Capture", UDA1380_PM, 2, 0),
+	SND_SOC_DAPM_ADC("Right ADC", "Right Capture", UDA1380_PM, 0, 0),
+	SND_SOC_DAPM_INPUT("VINM"),
+	SND_SOC_DAPM_INPUT("VINL"),
+	SND_SOC_DAPM_INPUT("VINR"),
+	SND_SOC_DAPM_MIXER("Analog Mixer", UDA1380_PM, 6, 0, NULL, 0),
+	SND_SOC_DAPM_OUTPUT("VOUTLHP"),
+	SND_SOC_DAPM_OUTPUT("VOUTRHP"),
+	SND_SOC_DAPM_OUTPUT("VOUTL"),
+	SND_SOC_DAPM_OUTPUT("VOUTR"),
+	SND_SOC_DAPM_DAC("DAC", "Playback", UDA1380_PM, 10, 0),
+	SND_SOC_DAPM_PGA("HeadPhone Driver", UDA1380_PM, 13, 0, NULL, 0),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+
+	/* output mux */
+	{"HeadPhone Driver", NULL, "Output Mux"},
+	{"VOUTR", NULL, "Output Mux"},
+	{"VOUTL", NULL, "Output Mux"},
+
+	{"Analog Mixer", NULL, "VINR"},
+	{"Analog Mixer", NULL, "VINL"},
+	{"Analog Mixer", NULL, "DAC"},
+
+	{"Output Mux", "DAC", "DAC"},
+	{"Output Mux", "Analog Mixer", "Analog Mixer"},
+
+	/* {"DAC", "Digital Mixer", "I2S" } */
+
+	/* headphone driver */
+	{"VOUTLHP", NULL, "HeadPhone Driver"},
+	{"VOUTRHP", NULL, "HeadPhone Driver"},
+
+	/* input mux */
+	{"Left ADC", NULL, "Input Mux"},
+	{"Input Mux", "Mic", "Mic LNA"},
+	{"Input Mux", "Mic + Line R", "Mic LNA"},
+	{"Input Mux", "Line L", "Left PGA"},
+	{"Input Mux", "Line", "Left PGA"},
+
+	/* right input */
+	{"Right ADC", "Mic + Line R", "Right PGA"},
+	{"Right ADC", "Line", "Right PGA"},
+
+	/* inputs */
+	{"Mic LNA", NULL, "VINM"},
+	{"Left PGA", NULL, "VINL"},
+	{"Right PGA", NULL, "VINR"},
+};
+
+static int uda1380_add_widgets(struct snd_soc_codec *codec)
+{
+	snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
+				  ARRAY_SIZE(uda1380_dapm_widgets));
+
+	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+	snd_soc_dapm_new_widgets(codec);
+	return 0;
+}
+
+static int uda1380_set_dai_fmt(struct snd_soc_dai *codec_dai,
+		unsigned int fmt)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	int iface;
+
+	/* set up DAI based upon fmt */
+	iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
+	iface &= ~(R01_SFORI_MASK | R01_SIM | R01_SFORO_MASK);
+
+	/* FIXME: how to select I2S for DATAO and MSB for DATAI correctly? */
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		iface |= R01_SFORI_I2S | R01_SFORO_I2S;
+		break;
+	case SND_SOC_DAIFMT_LSB:
+		iface |= R01_SFORI_LSB16 | R01_SFORO_I2S;
+		break;
+	case SND_SOC_DAIFMT_MSB:
+		iface |= R01_SFORI_MSB | R01_SFORO_I2S;
+	}
+
+	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM)
+		iface |= R01_SIM;
+
+	uda1380_write(codec, UDA1380_IFACE, iface);
+
+	return 0;
+}
+
+/*
+ * Flush reg cache
+ * We can only write the interpolator and decimator registers
+ * when the DAI is being clocked by the CPU DAI. It's up to the
+ * machine and cpu DAI driver to do this before we are called.
+ */
+static int uda1380_pcm_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_codec *codec = socdev->codec;
+	int reg, reg_start, reg_end, clk;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		reg_start = UDA1380_MVOL;
+		reg_end = UDA1380_MIXER;
+	} else {
+		reg_start = UDA1380_DEC;
+		reg_end = UDA1380_AGC;
+	}
+
+	/* FIXME disable DAC_CLK */
+	clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
+	uda1380_write(codec, UDA1380_CLK, clk & ~R00_DAC_CLK);
+
+	for (reg = reg_start; reg <= reg_end; reg++) {
+		pr_debug("uda1380: flush reg %x val %x:", reg,
+				uda1380_read_reg_cache(codec, reg));
+		uda1380_write(codec, reg, uda1380_read_reg_cache(codec, reg));
+	}
+
+	/* FIXME enable DAC_CLK */
+	uda1380_write(codec, UDA1380_CLK, clk | R00_DAC_CLK);
+
+	return 0;
+}
+
+static int uda1380_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 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
+
+	/* set WSPLL power and divider if running from this clock */
+	if (clk & R00_DAC_CLK) {
+		int rate = params_rate(params);
+		u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
+		clk &= ~0x3; /* clear SEL_LOOP_DIV */
+		switch (rate) {
+		case 6250 ... 12500:
+			clk |= 0x0;
+			break;
+		case 12501 ... 25000:
+			clk |= 0x1;
+			break;
+		case 25001 ... 50000:
+			clk |= 0x2;
+			break;
+		case 50001 ... 100000:
+			clk |= 0x3;
+			break;
+		}
+		uda1380_write(codec, UDA1380_PM, R02_PON_PLL | pm);
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		clk |= R00_EN_DAC | R00_EN_INT;
+	else
+		clk |= R00_EN_ADC | R00_EN_DEC;
+
+	uda1380_write(codec, UDA1380_CLK, clk);
+	return 0;
+}
+
+static void uda1380_pcm_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_device *socdev = rtd->socdev;
+	struct snd_soc_codec *codec = socdev->codec;
+	u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
+
+	/* shut down WSPLL power if running from this clock */
+	if (clk & R00_DAC_CLK) {
+		u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
+		uda1380_write(codec, UDA1380_PM, ~R02_PON_PLL & pm);
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		clk &= ~(R00_EN_DAC | R00_EN_INT);
+	else
+		clk &= ~(R00_EN_ADC | R00_EN_DEC);
+
+	uda1380_write(codec, UDA1380_CLK, clk);
+}
+
+static int uda1380_mute(struct snd_soc_dai *codec_dai, int mute)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	u16 mute_reg = uda1380_read_reg_cache(codec, UDA1380_DEEMP) & ~R13_MTM;
+
+	/* FIXME: mute(codec,0) is called when the magician clock is already
+	 * set to WSPLL, but for some unknown reason writing to interpolator
+	 * registers works only when clocked by SYSCLK */
+	u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
+	uda1380_write(codec, UDA1380_CLK, ~R00_DAC_CLK & clk);
+	if (mute)
+		uda1380_write(codec, UDA1380_DEEMP, mute_reg | R13_MTM);
+	else
+		uda1380_write(codec, UDA1380_DEEMP, mute_reg);
+	uda1380_write(codec, UDA1380_CLK, clk);
+	return 0;
+}
+
+static int uda1380_set_bias_level(struct snd_soc_codec *codec,
+	enum snd_soc_bias_level level)
+{
+	int pm = uda1380_read_reg_cache(codec, UDA1380_PM);
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+	case SND_SOC_BIAS_PREPARE:
+		uda1380_write(codec, UDA1380_PM, R02_PON_BIAS | pm);
+		break;
+	case SND_SOC_BIAS_STANDBY:
+		uda1380_write(codec, UDA1380_PM, R02_PON_BIAS);
+		break;
+	case SND_SOC_BIAS_OFF:
+		uda1380_write(codec, UDA1380_PM, 0x0);
+		break;
+	}
+	codec->bias_level = level;
+	return 0;
+}
+
+#define UDA1380_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)
+
+struct snd_soc_dai uda1380_dai[] = {
+{
+	.name = "UDA1380",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = UDA1380_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = UDA1380_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
+	.ops = {
+		.hw_params = uda1380_pcm_hw_params,
+		.shutdown = uda1380_pcm_shutdown,
+		.prepare = uda1380_pcm_prepare,
+	},
+	.dai_ops = {
+		.digital_mute = uda1380_mute,
+		.set_fmt = uda1380_set_dai_fmt,
+	},
+},
+{ /* playback only - dual interface */
+	.name = "UDA1380",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = UDA1380_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.ops = {
+		.hw_params = uda1380_pcm_hw_params,
+		.shutdown = uda1380_pcm_shutdown,
+		.prepare = uda1380_pcm_prepare,
+	},
+	.dai_ops = {
+		.digital_mute = uda1380_mute,
+		.set_fmt = uda1380_set_dai_fmt,
+	},
+},
+{ /* capture only - dual interface*/
+	.name = "UDA1380",
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = UDA1380_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.ops = {
+		.hw_params = uda1380_pcm_hw_params,
+		.shutdown = uda1380_pcm_shutdown,
+		.prepare = uda1380_pcm_prepare,
+	},
+	.dai_ops = {
+		.set_fmt = uda1380_set_dai_fmt,
+	},
+},
+};
+EXPORT_SYMBOL_GPL(uda1380_dai);
+
+static int uda1380_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;
+
+	uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
+	return 0;
+}
+
+static int uda1380_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(uda1380_reg); i++) {
+		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
+		data[1] = cache[i] & 0x00ff;
+		codec->hw_write(codec->control_data, data, 2);
+	}
+	uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+	uda1380_set_bias_level(codec, codec->suspend_bias_level);
+	return 0;
+}
+
+/*
+ * initialise the UDA1380 driver
+ * register mixer and dsp interfaces with the kernel
+ */
+static int uda1380_init(struct snd_soc_device *socdev, int dac_clk)
+{
+	struct snd_soc_codec *codec = socdev->codec;
+	int ret = 0;
+
+	codec->name = "UDA1380";
+	codec->owner = THIS_MODULE;
+	codec->read = uda1380_read_reg_cache;
+	codec->write = uda1380_write;
+	codec->set_bias_level = uda1380_set_bias_level;
+	codec->dai = uda1380_dai;
+	codec->num_dai = ARRAY_SIZE(uda1380_dai);
+	codec->reg_cache = kmemdup(uda1380_reg, sizeof(uda1380_reg),
+				   GFP_KERNEL);
+	if (codec->reg_cache == NULL)
+		return -ENOMEM;
+	codec->reg_cache_size = ARRAY_SIZE(uda1380_reg);
+	codec->reg_cache_step = 1;
+	uda1380_reset(codec);
+
+	/* register pcms */
+	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+	if (ret < 0) {
+		pr_err("uda1380: failed to create pcms\n");
+		goto pcm_err;
+	}
+
+	/* power on device */
+	uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+	/* set clock input */
+	switch (dac_clk) {
+	case UDA1380_DAC_CLK_SYSCLK:
+		uda1380_write(codec, UDA1380_CLK, 0);
+		break;
+	case UDA1380_DAC_CLK_WSPLL:
+		uda1380_write(codec, UDA1380_CLK, R00_DAC_CLK);
+		break;
+	}
+
+	/* uda1380 init */
+	uda1380_add_controls(codec);
+	uda1380_add_widgets(codec);
+	ret = snd_soc_register_card(socdev);
+	if (ret < 0) {
+		pr_err("uda1380: 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 *uda1380_socdev;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+
+#define I2C_DRIVERID_UDA1380 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 uda1380_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 uda1380_codec_probe(struct i2c_adapter *adap, int addr, int kind)
+{
+	struct snd_soc_device *socdev = uda1380_socdev;
+	struct uda1380_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) {
+		pr_err("uda1380: failed to attach codec at addr %x\n", addr);
+		goto err;
+	}
+
+	ret = uda1380_init(socdev, setup->dac_clk);
+	if (ret < 0) {
+		pr_err("uda1380: failed to initialise UDA1380\n");
+		goto err;
+	}
+	return ret;
+
+err:
+	kfree(codec);
+	kfree(i2c);
+	return ret;
+}
+
+static int uda1380_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 uda1380_i2c_attach(struct i2c_adapter *adap)
+{
+	return i2c_probe(adap, &addr_data, uda1380_codec_probe);
+}
+
+static struct i2c_driver uda1380_i2c_driver = {
+	.driver = {
+		.name =  "UDA1380 I2C Codec",
+		.owner = THIS_MODULE,
+	},
+	.id =             I2C_DRIVERID_UDA1380,
+	.attach_adapter = uda1380_i2c_attach,
+	.detach_client =  uda1380_i2c_detach,
+	.command =        NULL,
+};
+
+static struct i2c_client client_template = {
+	.name =   "UDA1380",
+	.driver = &uda1380_i2c_driver,
+};
+#endif
+
+static int uda1380_probe(struct platform_device *pdev)
+{
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct uda1380_setup_data *setup;
+	struct snd_soc_codec *codec;
+	int ret = 0;
+
+	pr_info("UDA1380 Audio Codec %s", UDA1380_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);
+
+	uda1380_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(&uda1380_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 uda1380_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)
+		uda1380_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(&uda1380_i2c_driver);
+#endif
+	kfree(codec);
+
+	return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_uda1380 = {
+	.probe = 	uda1380_probe,
+	.remove = 	uda1380_remove,
+	.suspend = 	uda1380_suspend,
+	.resume =	uda1380_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_uda1380);
+
+MODULE_AUTHOR("Giorgio Padrin");
+MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
+MODULE_LICENSE("GPL");