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linux/sound/soc/codecs/sirf-audio-codec.c
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1 
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 Version: GnuPG v2
 
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 53kAoLeteByQ3iVwWurwwseRPiWa8+MI
 =OVRS
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00

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/*
* SiRF audio codec driver
*
* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
*
* Licensed under GPLv2 or later.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
#include "sirf-audio-codec.h"
struct sirf_audio_codec {
struct clk *clk;
struct regmap *regmap;
u32 reg_ctrl0, reg_ctrl1;
};
static const char * const input_mode_mux[] = {"Single-ended",
"Differential"};
static const struct soc_enum input_mode_mux_enum =
SOC_ENUM_SINGLE(AUDIO_IC_CODEC_CTRL1, 4, 2, input_mode_mux);
static const struct snd_kcontrol_new sirf_audio_codec_input_mode_control =
SOC_DAPM_ENUM("Route", input_mode_mux_enum);
static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -12400, 100, 0);
static const DECLARE_TLV_DB_SCALE(capture_vol_tlv_prima2, 500, 100, 0);
static const DECLARE_TLV_DB_RANGE(capture_vol_tlv_atlas6,
0, 7, TLV_DB_SCALE_ITEM(-100, 100, 0),
0x22, 0x3F, TLV_DB_SCALE_ITEM(700, 100, 0),
);
static struct snd_kcontrol_new volume_controls_atlas6[] = {
SOC_DOUBLE_TLV("Playback Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
0x7F, 0, playback_vol_tlv),
SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 16, 10,
0x3F, 0, capture_vol_tlv_atlas6),
};
static struct snd_kcontrol_new volume_controls_prima2[] = {
SOC_DOUBLE_TLV("Speaker Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
0x7F, 0, playback_vol_tlv),
SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 15, 10,
0x1F, 0, capture_vol_tlv_prima2),
};
static struct snd_kcontrol_new left_input_path_controls[] = {
SOC_DAPM_SINGLE("Line Left Switch", AUDIO_IC_CODEC_CTRL1, 6, 1, 0),
SOC_DAPM_SINGLE("Mic Left Switch", AUDIO_IC_CODEC_CTRL1, 3, 1, 0),
};
static struct snd_kcontrol_new right_input_path_controls[] = {
SOC_DAPM_SINGLE("Line Right Switch", AUDIO_IC_CODEC_CTRL1, 5, 1, 0),
SOC_DAPM_SINGLE("Mic Right Switch", AUDIO_IC_CODEC_CTRL1, 2, 1, 0),
};
static struct snd_kcontrol_new left_dac_to_hp_left_amp_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 9, 1, 0);
static struct snd_kcontrol_new left_dac_to_hp_right_amp_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 8, 1, 0);
static struct snd_kcontrol_new right_dac_to_hp_left_amp_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 7, 1, 0);
static struct snd_kcontrol_new right_dac_to_hp_right_amp_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 6, 1, 0);
static struct snd_kcontrol_new left_dac_to_speaker_lineout_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 11, 1, 0);
static struct snd_kcontrol_new right_dac_to_speaker_lineout_switch_control =
SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 10, 1, 0);
/* After enable adc, Delay 200ms to avoid pop noise */
static int adc_enable_delay_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(200);
break;
default:
break;
}
return 0;
}
static void enable_and_reset_codec(struct regmap *regmap,
u32 codec_enable_bits, u32 codec_reset_bits)
{
regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
codec_enable_bits | codec_reset_bits,
codec_enable_bits);
msleep(20);
regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
codec_reset_bits, codec_reset_bits);
}
static int atlas6_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
#define ATLAS6_CODEC_ENABLE_BITS (1 << 29)
#define ATLAS6_CODEC_RESET_BITS (1 << 28)
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
enable_and_reset_codec(sirf_audio_codec->regmap,
ATLAS6_CODEC_ENABLE_BITS, ATLAS6_CODEC_RESET_BITS);
break;
case SND_SOC_DAPM_POST_PMD:
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_IC_CODEC_CTRL1, ATLAS6_CODEC_ENABLE_BITS, 0);
break;
default:
break;
}
return 0;
}
static int prima2_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
#define PRIMA2_CODEC_ENABLE_BITS (1 << 27)
#define PRIMA2_CODEC_RESET_BITS (1 << 26)
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
enable_and_reset_codec(sirf_audio_codec->regmap,
PRIMA2_CODEC_ENABLE_BITS, PRIMA2_CODEC_RESET_BITS);
break;
case SND_SOC_DAPM_POST_PMD:
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_IC_CODEC_CTRL1, PRIMA2_CODEC_ENABLE_BITS, 0);
break;
default:
break;
}
return 0;
}
static const struct snd_soc_dapm_widget atlas6_output_driver_dapm_widgets[] = {
SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
25, 0, NULL, 0),
SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
26, 0, NULL, 0),
SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
27, 0, NULL, 0),
};
static const struct snd_soc_dapm_widget prima2_output_driver_dapm_widgets[] = {
SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
23, 0, NULL, 0),
SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
24, 0, NULL, 0),
SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
25, 0, NULL, 0),
};
static const struct snd_soc_dapm_widget atlas6_codec_clock_dapm_widget =
SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
atlas6_codec_enable_and_reset_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
static const struct snd_soc_dapm_widget prima2_codec_clock_dapm_widget =
SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
prima2_codec_enable_and_reset_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
static const struct snd_soc_dapm_widget sirf_audio_codec_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC left", NULL, AUDIO_IC_CODEC_CTRL0, 1, 0),
SND_SOC_DAPM_DAC("DAC right", NULL, AUDIO_IC_CODEC_CTRL0, 0, 0),
SND_SOC_DAPM_SWITCH("Left dac to hp left amp", SND_SOC_NOPM, 0, 0,
&left_dac_to_hp_left_amp_switch_control),
SND_SOC_DAPM_SWITCH("Left dac to hp right amp", SND_SOC_NOPM, 0, 0,
&left_dac_to_hp_right_amp_switch_control),
SND_SOC_DAPM_SWITCH("Right dac to hp left amp", SND_SOC_NOPM, 0, 0,
&right_dac_to_hp_left_amp_switch_control),
SND_SOC_DAPM_SWITCH("Right dac to hp right amp", SND_SOC_NOPM, 0, 0,
&right_dac_to_hp_right_amp_switch_control),
SND_SOC_DAPM_OUT_DRV("HP amp left driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
NULL, 0),
SND_SOC_DAPM_OUT_DRV("HP amp right driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
NULL, 0),
SND_SOC_DAPM_SWITCH("Left dac to speaker lineout", SND_SOC_NOPM, 0, 0,
&left_dac_to_speaker_lineout_switch_control),
SND_SOC_DAPM_SWITCH("Right dac to speaker lineout", SND_SOC_NOPM, 0, 0,
&right_dac_to_speaker_lineout_switch_control),
SND_SOC_DAPM_OUT_DRV("Speaker amp driver", AUDIO_IC_CODEC_CTRL0, 4, 0,
NULL, 0),
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
SND_SOC_DAPM_OUTPUT("SPKOUT"),
SND_SOC_DAPM_ADC_E("ADC left", NULL, AUDIO_IC_CODEC_CTRL1, 8, 0,
adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_ADC_E("ADC right", NULL, AUDIO_IC_CODEC_CTRL1, 7, 0,
adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_MIXER("Left PGA mixer", AUDIO_IC_CODEC_CTRL1, 1, 0,
&left_input_path_controls[0],
ARRAY_SIZE(left_input_path_controls)),
SND_SOC_DAPM_MIXER("Right PGA mixer", AUDIO_IC_CODEC_CTRL1, 0, 0,
&right_input_path_controls[0],
ARRAY_SIZE(right_input_path_controls)),
SND_SOC_DAPM_MUX("Mic input mode mux", SND_SOC_NOPM, 0, 0,
&sirf_audio_codec_input_mode_control),
SND_SOC_DAPM_MICBIAS("Mic Bias", AUDIO_IC_CODEC_PWR, 3, 0),
SND_SOC_DAPM_INPUT("MICIN1"),
SND_SOC_DAPM_INPUT("MICIN2"),
SND_SOC_DAPM_INPUT("LINEIN1"),
SND_SOC_DAPM_INPUT("LINEIN2"),
SND_SOC_DAPM_SUPPLY("HSL Phase Opposite", AUDIO_IC_CODEC_CTRL0,
30, 0, NULL, 0),
};
static const struct snd_soc_dapm_route sirf_audio_codec_map[] = {
{"SPKOUT", NULL, "Speaker Driver"},
{"Speaker Driver", NULL, "Speaker amp driver"},
{"Speaker amp driver", NULL, "Left dac to speaker lineout"},
{"Speaker amp driver", NULL, "Right dac to speaker lineout"},
{"Left dac to speaker lineout", "Switch", "DAC left"},
{"Right dac to speaker lineout", "Switch", "DAC right"},
{"HPOUTL", NULL, "HP Left Driver"},
{"HPOUTR", NULL, "HP Right Driver"},
{"HP Left Driver", NULL, "HP amp left driver"},
{"HP Right Driver", NULL, "HP amp right driver"},
{"HP amp left driver", NULL, "Right dac to hp left amp"},
{"HP amp right driver", NULL , "Right dac to hp right amp"},
{"HP amp left driver", NULL, "Left dac to hp left amp"},
{"HP amp right driver", NULL , "Right dac to hp right amp"},
{"Right dac to hp left amp", "Switch", "DAC left"},
{"Right dac to hp right amp", "Switch", "DAC right"},
{"Left dac to hp left amp", "Switch", "DAC left"},
{"Left dac to hp right amp", "Switch", "DAC right"},
{"DAC left", NULL, "codecclk"},
{"DAC right", NULL, "codecclk"},
{"DAC left", NULL, "Playback"},
{"DAC right", NULL, "Playback"},
{"DAC left", NULL, "HSL Phase Opposite"},
{"DAC right", NULL, "HSL Phase Opposite"},
{"Capture", NULL, "ADC left"},
{"Capture", NULL, "ADC right"},
{"ADC left", NULL, "codecclk"},
{"ADC right", NULL, "codecclk"},
{"ADC left", NULL, "Left PGA mixer"},
{"ADC right", NULL, "Right PGA mixer"},
{"Left PGA mixer", "Line Left Switch", "LINEIN2"},
{"Right PGA mixer", "Line Right Switch", "LINEIN1"},
{"Left PGA mixer", "Mic Left Switch", "MICIN2"},
{"Right PGA mixer", "Mic Right Switch", "Mic input mode mux"},
{"Mic input mode mux", "Single-ended", "MICIN1"},
{"Mic input mode mux", "Differential", "MICIN1"},
};
static void sirf_audio_codec_tx_enable(struct sirf_audio_codec *sirf_audio_codec)
{
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_INT_MSK, 0);
regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
AUDIO_FIFO_START, AUDIO_FIFO_START);
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, IC_TX_ENABLE);
}
static void sirf_audio_codec_tx_disable(struct sirf_audio_codec *sirf_audio_codec)
{
regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, ~IC_TX_ENABLE);
}
static void sirf_audio_codec_rx_enable(struct sirf_audio_codec *sirf_audio_codec,
int channels)
{
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
regmap_write(sirf_audio_codec->regmap,
AUDIO_PORT_IC_RXFIFO_INT_MSK, 0);
regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP, 0);
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
AUDIO_FIFO_START, AUDIO_FIFO_START);
if (channels == 1)
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_PORT_IC_CODEC_RX_CTRL,
IC_RX_ENABLE_MONO, IC_RX_ENABLE_MONO);
else
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_PORT_IC_CODEC_RX_CTRL,
IC_RX_ENABLE_STEREO, IC_RX_ENABLE_STEREO);
}
static void sirf_audio_codec_rx_disable(struct sirf_audio_codec *sirf_audio_codec)
{
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_PORT_IC_CODEC_RX_CTRL,
IC_RX_ENABLE_STEREO, ~IC_RX_ENABLE_STEREO);
}
static int sirf_audio_codec_trigger(struct snd_pcm_substream *substream,
int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
int playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
/*
* This is a workaround, When stop playback,
* need disable HP amp, avoid the current noise.
*/
switch (cmd) {
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (playback) {
snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
IC_HSLEN | IC_HSREN, 0);
sirf_audio_codec_tx_disable(sirf_audio_codec);
} else
sirf_audio_codec_rx_disable(sirf_audio_codec);
break;
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (playback) {
sirf_audio_codec_tx_enable(sirf_audio_codec);
snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
IC_HSLEN | IC_HSREN, IC_HSLEN | IC_HSREN);
} else
sirf_audio_codec_rx_enable(sirf_audio_codec,
substream->runtime->channels);
break;
default:
return -EINVAL;
}
return 0;
}
struct snd_soc_dai_ops sirf_audio_codec_dai_ops = {
.trigger = sirf_audio_codec_trigger,
};
struct snd_soc_dai_driver sirf_audio_codec_dai = {
.name = "sirf-audio-codec",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = &sirf_audio_codec_dai_ops,
};
static int sirf_audio_codec_probe(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
pm_runtime_enable(codec->dev);
if (of_device_is_compatible(codec->dev->of_node, "sirf,prima2-audio-codec")) {
snd_soc_dapm_new_controls(dapm,
prima2_output_driver_dapm_widgets,
ARRAY_SIZE(prima2_output_driver_dapm_widgets));
snd_soc_dapm_new_controls(dapm,
&prima2_codec_clock_dapm_widget, 1);
return snd_soc_add_codec_controls(codec,
volume_controls_prima2,
ARRAY_SIZE(volume_controls_prima2));
}
if (of_device_is_compatible(codec->dev->of_node, "sirf,atlas6-audio-codec")) {
snd_soc_dapm_new_controls(dapm,
atlas6_output_driver_dapm_widgets,
ARRAY_SIZE(atlas6_output_driver_dapm_widgets));
snd_soc_dapm_new_controls(dapm,
&atlas6_codec_clock_dapm_widget, 1);
return snd_soc_add_codec_controls(codec,
volume_controls_atlas6,
ARRAY_SIZE(volume_controls_atlas6));
}
return -EINVAL;
}
static int sirf_audio_codec_remove(struct snd_soc_codec *codec)
{
pm_runtime_disable(codec->dev);
return 0;
}
static struct snd_soc_codec_driver soc_codec_device_sirf_audio_codec = {
.probe = sirf_audio_codec_probe,
.remove = sirf_audio_codec_remove,
.dapm_widgets = sirf_audio_codec_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(sirf_audio_codec_dapm_widgets),
.dapm_routes = sirf_audio_codec_map,
.num_dapm_routes = ARRAY_SIZE(sirf_audio_codec_map),
.idle_bias_off = true,
};
static const struct of_device_id sirf_audio_codec_of_match[] = {
{ .compatible = "sirf,prima2-audio-codec" },
{ .compatible = "sirf,atlas6-audio-codec" },
{}
};
MODULE_DEVICE_TABLE(of, sirf_audio_codec_of_match);
static const struct regmap_config sirf_audio_codec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = AUDIO_PORT_IC_RXFIFO_INT_MSK,
.cache_type = REGCACHE_NONE,
};
static int sirf_audio_codec_driver_probe(struct platform_device *pdev)
{
int ret;
struct sirf_audio_codec *sirf_audio_codec;
void __iomem *base;
struct resource *mem_res;
const struct of_device_id *match;
match = of_match_node(sirf_audio_codec_of_match, pdev->dev.of_node);
sirf_audio_codec = devm_kzalloc(&pdev->dev,
sizeof(struct sirf_audio_codec), GFP_KERNEL);
if (!sirf_audio_codec)
return -ENOMEM;
platform_set_drvdata(pdev, sirf_audio_codec);
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, mem_res);
if (IS_ERR(base))
return PTR_ERR(base);
sirf_audio_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
&sirf_audio_codec_regmap_config);
if (IS_ERR(sirf_audio_codec->regmap))
return PTR_ERR(sirf_audio_codec->regmap);
sirf_audio_codec->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(sirf_audio_codec->clk)) {
dev_err(&pdev->dev, "Get clock failed.\n");
return PTR_ERR(sirf_audio_codec->clk);
}
ret = clk_prepare_enable(sirf_audio_codec->clk);
if (ret) {
dev_err(&pdev->dev, "Enable clock failed.\n");
return ret;
}
ret = snd_soc_register_codec(&(pdev->dev),
&soc_codec_device_sirf_audio_codec,
&sirf_audio_codec_dai, 1);
if (ret) {
dev_err(&pdev->dev, "Register Audio Codec dai failed.\n");
goto err_clk_put;
}
/*
* Always open charge pump, if not, when the charge pump closed the
* adc will not stable
*/
regmap_update_bits(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
IC_CPFREQ, IC_CPFREQ);
if (of_device_is_compatible(pdev->dev.of_node, "sirf,atlas6-audio-codec"))
regmap_update_bits(sirf_audio_codec->regmap,
AUDIO_IC_CODEC_CTRL0, IC_CPEN, IC_CPEN);
return 0;
err_clk_put:
clk_disable_unprepare(sirf_audio_codec->clk);
return ret;
}
static int sirf_audio_codec_driver_remove(struct platform_device *pdev)
{
struct sirf_audio_codec *sirf_audio_codec = platform_get_drvdata(pdev);
clk_disable_unprepare(sirf_audio_codec->clk);
snd_soc_unregister_codec(&(pdev->dev));
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int sirf_audio_codec_suspend(struct device *dev)
{
struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);
regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
&sirf_audio_codec->reg_ctrl0);
regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
&sirf_audio_codec->reg_ctrl1);
clk_disable_unprepare(sirf_audio_codec->clk);
return 0;
}
static int sirf_audio_codec_resume(struct device *dev)
{
struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(sirf_audio_codec->clk);
if (ret)
return ret;
regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
sirf_audio_codec->reg_ctrl0);
regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
sirf_audio_codec->reg_ctrl1);
return 0;
}
#endif
static const struct dev_pm_ops sirf_audio_codec_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(sirf_audio_codec_suspend, sirf_audio_codec_resume)
};
static struct platform_driver sirf_audio_codec_driver = {
.driver = {
.name = "sirf-audio-codec",
.of_match_table = sirf_audio_codec_of_match,
.pm = &sirf_audio_codec_pm_ops,
},
.probe = sirf_audio_codec_driver_probe,
.remove = sirf_audio_codec_driver_remove,
};
module_platform_driver(sirf_audio_codec_driver);
MODULE_DESCRIPTION("SiRF audio codec driver");
MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>");
MODULE_LICENSE("GPL v2");
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