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kernel-fxtec-pro1x/sound/soc/codecs/uda1380.c
Liam Girdwood ce6120cca2 ASoC: Decouple DAPM from CODECs 
Decoupling Dynamic Audio Power Management (DAPM) from codec devices is
required when developing ASoC further. Such as for other ASoC components to
have DAPM widgets or when extending DAPM to handle cross-device paths.

This patch decouples DAPM related variables from struct snd_soc_codec and
moves them to new struct snd_soc_dapm_context that is used to encapsulate
DAPM context of a device. ASoC core and API of DAPM functions are modified
to use DAPM context instead of codec.

This patch does not change current functionality and a large part of changes
come because of structure and internal API changes.

Core implementation is from Liam Girdwood <lrg@slimlogic.co.uk> with some
minor core changes, codecs and machine driver conversions from
Jarkko Nikula <jhnikula@gmail.com>.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Cliff Cai <cliff.cai@analog.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Timur Tabi <timur@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jassi Brar <jassi.brar@samsung.com>
Cc: Daniel Gloeckner <dg@emlix.com>
Cc: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-06 11:28:29 -04:00

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/*
* 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) 2007-2009 Philipp Zabel <philipp.zabel@gmail.com>
*
* 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/slab.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <sound/uda1380.h>
#include "uda1380.h"
/* codec private data */
struct uda1380_priv {
struct snd_soc_codec *codec;
u16 reg_cache[UDA1380_CACHEREGNUM];
unsigned int dac_clk;
struct work_struct work;
void *control_data;
};
/*
* 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,
};
static unsigned long uda1380_cache_dirty;
/*
* 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;
if ((reg >= 0x10) && (cache[reg] != value))
set_bit(reg - 0x10, &uda1380_cache_dirty);
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;
}
if (reg >= 0x10)
clear_bit(reg - 0x10, &uda1380_cache_dirty);
return 0;
} else
return -EIO;
}
static void uda1380_sync_cache(struct snd_soc_codec *codec)
{
int reg;
u8 data[3];
u16 *cache = codec->reg_cache;
/* Sync reg_cache with the hardware */
for (reg = 0; reg < UDA1380_MVOL; reg++) {
data[0] = reg;
data[1] = (cache[reg] & 0xff00) >> 8;
data[2] = cache[reg] & 0x00ff;
if (codec->hw_write(codec->control_data, data, 3) != 3)
dev_err(codec->dev, "%s: write to reg 0x%x failed\n",
__func__, reg);
}
}
static int uda1380_reset(struct snd_soc_codec *codec)
{
struct uda1380_platform_data *pdata = codec->dev->platform_data;
if (gpio_is_valid(pdata->gpio_reset)) {
gpio_set_value(pdata->gpio_reset, 1);
mdelay(1);
gpio_set_value(pdata->gpio_reset, 0);
} else {
u8 data[3];
data[0] = UDA1380_RESET;
data[1] = 0;
data[2] = 0;
if (codec->hw_write(codec->control_data, data, 3) != 3) {
dev_err(codec->dev, "%s: failed\n", __func__);
return -EIO;
}
}
return 0;
}
static void uda1380_flush_work(struct work_struct *work)
{
struct uda1380_priv *uda1380 = container_of(work, struct uda1380_priv, work);
struct snd_soc_codec *uda1380_codec = uda1380->codec;
int bit, reg;
for_each_set_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
reg = 0x10 + bit;
pr_debug("uda1380: flush reg %x val %x:\n", reg,
uda1380_read_reg_cache(uda1380_codec, reg));
uda1380_write(uda1380_codec, reg,
uda1380_read_reg_cache(uda1380_codec, reg));
clear_bit(bit, &uda1380_cache_dirty);
}
}
/* 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 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),
};
/* 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)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
ARRAY_SIZE(uda1380_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
static int uda1380_set_dai_fmt_both(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);
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_LSB16;
break;
case SND_SOC_DAIFMT_MSB:
iface |= R01_SFORI_MSB | R01_SFORO_MSB;
}
/* DATAI is slave only, so in single-link mode, this has to be slave */
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
return -EINVAL;
uda1380_write(codec, UDA1380_IFACE, iface);
return 0;
}
static int uda1380_set_dai_fmt_playback(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;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= R01_SFORI_I2S;
break;
case SND_SOC_DAIFMT_LSB:
iface |= R01_SFORI_LSB16;
break;
case SND_SOC_DAIFMT_MSB:
iface |= R01_SFORI_MSB;
}
/* DATAI is slave only, so this has to be slave */
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
return -EINVAL;
uda1380_write(codec, UDA1380_IFACE, iface);
return 0;
}
static int uda1380_set_dai_fmt_capture(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_SIM | R01_SFORO_MASK);
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= R01_SFORO_I2S;
break;
case SND_SOC_DAIFMT_LSB:
iface |= R01_SFORO_LSB16;
break;
case SND_SOC_DAIFMT_MSB:
iface |= R01_SFORO_MSB;
}
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM)
iface |= R01_SIM;
uda1380_write(codec, UDA1380_IFACE, iface);
return 0;
}
static int uda1380_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct uda1380_priv *uda1380 = snd_soc_codec_get_drvdata(codec);
int mixer = uda1380_read_reg_cache(codec, UDA1380_MIXER);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
uda1380_write_reg_cache(codec, UDA1380_MIXER,
mixer & ~R14_SILENCE);
schedule_work(&uda1380->work);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
uda1380_write_reg_cache(codec, UDA1380_MIXER,
mixer | R14_SILENCE);
schedule_work(&uda1380->work);
break;
}
return 0;
}
static int uda1380_pcm_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_codec *codec = rtd->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_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->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_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
int pm = uda1380_read_reg_cache(codec, UDA1380_PM);
int reg;
struct uda1380_platform_data *pdata = codec->dev->platform_data;
if (codec->dapm.bias_level == level)
return 0;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
/* ADC, DAC on */
uda1380_write(codec, UDA1380_PM, R02_PON_BIAS | pm);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
if (gpio_is_valid(pdata->gpio_power)) {
gpio_set_value(pdata->gpio_power, 1);
mdelay(1);
uda1380_reset(codec);
}
uda1380_sync_cache(codec);
}
uda1380_write(codec, UDA1380_PM, 0x0);
break;
case SND_SOC_BIAS_OFF:
if (!gpio_is_valid(pdata->gpio_power))
break;
gpio_set_value(pdata->gpio_power, 0);
/* Mark mixer regs cache dirty to sync them with
* codec regs on power on.
*/
for (reg = UDA1380_MVOL; reg < UDA1380_CACHEREGNUM; reg++)
set_bit(reg - 0x10, &uda1380_cache_dirty);
}
codec->dapm.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)
static struct snd_soc_dai_ops uda1380_dai_ops = {
.hw_params = uda1380_pcm_hw_params,
.shutdown = uda1380_pcm_shutdown,
.trigger = uda1380_trigger,
.set_fmt = uda1380_set_dai_fmt_both,
};
static struct snd_soc_dai_ops uda1380_dai_ops_playback = {
.hw_params = uda1380_pcm_hw_params,
.shutdown = uda1380_pcm_shutdown,
.trigger = uda1380_trigger,
.set_fmt = uda1380_set_dai_fmt_playback,
};
static struct snd_soc_dai_ops uda1380_dai_ops_capture = {
.hw_params = uda1380_pcm_hw_params,
.shutdown = uda1380_pcm_shutdown,
.trigger = uda1380_trigger,
.set_fmt = uda1380_set_dai_fmt_capture,
};
static struct snd_soc_dai_driver uda1380_dai[] = {
{
.name = "uda1380-hifi",
.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 = &uda1380_dai_ops,
},
{ /* playback only - dual interface */
.name = "uda1380-hifi-playback",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = UDA1380_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = &uda1380_dai_ops_playback,
},
{ /* capture only - dual interface*/
.name = "uda1380-hifi-capture",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = UDA1380_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = &uda1380_dai_ops_capture,
},
};
static int uda1380_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int uda1380_resume(struct snd_soc_codec *codec)
{
uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static int uda1380_probe(struct snd_soc_codec *codec)
{
struct uda1380_platform_data *pdata =codec->dev->platform_data;
struct uda1380_priv *uda1380 = snd_soc_codec_get_drvdata(codec);
int ret;
uda1380->codec = codec;
codec->hw_write = (hw_write_t)i2c_master_send;
codec->control_data = uda1380->control_data;
if (!pdata)
return -EINVAL;
if (gpio_is_valid(pdata->gpio_reset)) {
ret = gpio_request(pdata->gpio_reset, "uda1380 reset");
if (ret)
goto err_out;
ret = gpio_direction_output(pdata->gpio_reset, 0);
if (ret)
goto err_gpio_reset_conf;
}
if (gpio_is_valid(pdata->gpio_power)) {
ret = gpio_request(pdata->gpio_power, "uda1380 power");
if (ret)
goto err_gpio;
ret = gpio_direction_output(pdata->gpio_power, 0);
if (ret)
goto err_gpio_power_conf;
} else {
ret = uda1380_reset(codec);
if (ret) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err_reset;
}
}
INIT_WORK(&uda1380->work, uda1380_flush_work);
/* power on device */
uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* set clock input */
switch (pdata->dac_clk) {
case UDA1380_DAC_CLK_SYSCLK:
uda1380_write_reg_cache(codec, UDA1380_CLK, 0);
break;
case UDA1380_DAC_CLK_WSPLL:
uda1380_write_reg_cache(codec, UDA1380_CLK,
R00_DAC_CLK);
break;
}
snd_soc_add_controls(codec, uda1380_snd_controls,
ARRAY_SIZE(uda1380_snd_controls));
uda1380_add_widgets(codec);
return 0;
err_reset:
err_gpio_power_conf:
if (gpio_is_valid(pdata->gpio_power))
gpio_free(pdata->gpio_power);
err_gpio_reset_conf:
err_gpio:
if (gpio_is_valid(pdata->gpio_reset))
gpio_free(pdata->gpio_reset);
err_out:
return ret;
}
/* power down chip */
static int uda1380_remove(struct snd_soc_codec *codec)
{
struct uda1380_platform_data *pdata =codec->dev->platform_data;
uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
gpio_free(pdata->gpio_reset);
gpio_free(pdata->gpio_power);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_uda1380 = {
.probe = uda1380_probe,
.remove = uda1380_remove,
.suspend = uda1380_suspend,
.resume = uda1380_resume,
.read = uda1380_read_reg_cache,
.write = uda1380_write,
.set_bias_level = uda1380_set_bias_level,
.reg_cache_size = ARRAY_SIZE(uda1380_reg),
.reg_word_size = sizeof(u16),
.reg_cache_default = uda1380_reg,
.reg_cache_step = 1,
};
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int uda1380_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct uda1380_priv *uda1380;
int ret;
uda1380 = kzalloc(sizeof(struct uda1380_priv), GFP_KERNEL);
if (uda1380 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, uda1380);
uda1380->control_data = i2c;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_uda1380, uda1380_dai, ARRAY_SIZE(uda1380_dai));
if (ret < 0)
kfree(uda1380);
return ret;
}
static int __devexit uda1380_i2c_remove(struct i2c_client *i2c)
{
snd_soc_unregister_codec(&i2c->dev);
kfree(i2c_get_clientdata(i2c));
return 0;
}
static const struct i2c_device_id uda1380_i2c_id[] = {
{ "uda1380", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, uda1380_i2c_id);
static struct i2c_driver uda1380_i2c_driver = {
.driver = {
.name = "uda1380-codec",
.owner = THIS_MODULE,
},
.probe = uda1380_i2c_probe,
.remove = __devexit_p(uda1380_i2c_remove),
.id_table = uda1380_i2c_id,
};
#endif
static int __init uda1380_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&uda1380_i2c_driver);
if (ret != 0)
pr_err("Failed to register UDA1380 I2C driver: %d\n", ret);
#endif
return 0;
}
module_init(uda1380_modinit);
static void __exit uda1380_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&uda1380_i2c_driver);
#endif
}
module_exit(uda1380_exit);
MODULE_AUTHOR("Giorgio Padrin");
MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
MODULE_LICENSE("GPL");
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