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linux-next/sound/soc/codecs/sn95031.c
Vinod Koul b22dab8883 ASoC: sn95031 fix the code style and format inconsistencies 
this patch fixes inconsistencies commented by Mark.
This also fixes few other style things in audio_map & header file

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Harsha Priya <priya.harsha@intel.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-10 11:35:41 +00:00

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/*
* sn95031.c - TI sn95031 Codec driver
*
* Copyright (C) 2010 Intel Corp
* Author: Vinod Koul <vinod.koul@intel.com>
* Author: Harsha Priya <priya.harsha@intel.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; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <asm/intel_scu_ipc.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include "sn95031.h"
#define SN95031_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100)
#define SN95031_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
/*
* todo:
* capture paths
* jack detection
* PM functions
*/
static inline unsigned int sn95031_read(struct snd_soc_codec *codec,
unsigned int reg)
{
u8 value = 0;
int ret;
ret = intel_scu_ipc_ioread8(reg, &value);
if (ret)
pr_err("read of %x failed, err %d\n", reg, ret);
return value;
}
static inline int sn95031_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
int ret;
ret = intel_scu_ipc_iowrite8(reg, value);
if (ret)
pr_err("write of %x failed, err %d\n", reg, ret);
return ret;
}
static int sn95031_set_vaud_bias(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
pr_debug("vaud_bias powering up pll\n");
/* power up the pll */
snd_soc_write(codec, SN95031_AUDPLLCTRL, BIT(5));
/* enable pcm 2 */
snd_soc_update_bits(codec, SN95031_PCM2C2,
BIT(0), BIT(0));
}
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
pr_debug("vaud_bias power up rail\n");
/* power up the rail */
snd_soc_write(codec, SN95031_VAUD,
BIT(2)|BIT(1)|BIT(0));
msleep(1);
} else if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) {
/* turn off pcm */
pr_debug("vaud_bias power dn pcm\n");
snd_soc_update_bits(codec, SN95031_PCM2C2, BIT(0), 0);
snd_soc_write(codec, SN95031_AUDPLLCTRL, 0);
}
break;
case SND_SOC_BIAS_OFF:
pr_debug("vaud_bias _OFF doing rail shutdown\n");
snd_soc_write(codec, SN95031_VAUD, BIT(3));
break;
}
codec->dapm.bias_level = level;
return 0;
}
static int sn95031_vhs_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event)) {
pr_debug("VHS SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
/* power up the rail */
snd_soc_write(w->codec, SN95031_VHSP, 0x3D);
snd_soc_write(w->codec, SN95031_VHSN, 0x3F);
msleep(1);
} else if (SND_SOC_DAPM_EVENT_OFF(event)) {
pr_debug("VHS SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
snd_soc_write(w->codec, SN95031_VHSP, 0xC4);
snd_soc_write(w->codec, SN95031_VHSN, 0x04);
}
return 0;
}
static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event)) {
pr_debug("VIHF SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
/* power up the rail */
snd_soc_write(w->codec, SN95031_VIHF, 0x27);
msleep(1);
} else if (SND_SOC_DAPM_EVENT_OFF(event)) {
pr_debug("VIHF SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
snd_soc_write(w->codec, SN95031_VIHF, 0x24);
}
return 0;
}
/* DAPM widgets */
static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
/* all end points mic, hs etc */
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
SND_SOC_DAPM_OUTPUT("EPOUT"),
SND_SOC_DAPM_OUTPUT("IHFOUTL"),
SND_SOC_DAPM_OUTPUT("IHFOUTR"),
SND_SOC_DAPM_OUTPUT("LINEOUTL"),
SND_SOC_DAPM_OUTPUT("LINEOUTR"),
SND_SOC_DAPM_OUTPUT("VIB1OUT"),
SND_SOC_DAPM_OUTPUT("VIB2OUT"),
SND_SOC_DAPM_SUPPLY("Headset Rail", SND_SOC_NOPM, 0, 0,
sn95031_vhs_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("Speaker Rail", SND_SOC_NOPM, 0, 0,
sn95031_vihf_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
/* playback path driver enables */
SND_SOC_DAPM_PGA("Headset Left Playback",
SN95031_DRIVEREN, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Headset Right Playback",
SN95031_DRIVEREN, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("Speaker Left Playback",
SN95031_DRIVEREN, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA("Speaker Right Playback",
SN95031_DRIVEREN, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("Vibra1 Playback",
SN95031_DRIVEREN, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA("Vibra2 Playback",
SN95031_DRIVEREN, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Earpiece Playback",
SN95031_DRIVEREN, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("Lineout Left Playback",
SN95031_LOCTL, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Lineout Right Playback",
SN95031_LOCTL, 4, 0, NULL, 0),
/* playback path filter enable */
SND_SOC_DAPM_PGA("Headset Left Filter",
SN95031_HSEPRXCTRL, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA("Headset Right Filter",
SN95031_HSEPRXCTRL, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Speaker Left Filter",
SN95031_IHFRXCTRL, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Speaker Right Filter",
SN95031_IHFRXCTRL, 1, 0, NULL, 0),
/* DACs */
SND_SOC_DAPM_DAC("HSDAC Left", "Headset",
SN95031_DACCONFIG, 0, 0),
SND_SOC_DAPM_DAC("HSDAC Right", "Headset",
SN95031_DACCONFIG, 1, 0),
SND_SOC_DAPM_DAC("IHFDAC Left", "Speaker",
SN95031_DACCONFIG, 2, 0),
SND_SOC_DAPM_DAC("IHFDAC Right", "Speaker",
SN95031_DACCONFIG, 3, 0),
SND_SOC_DAPM_DAC("Vibra1 DAC", "Vibra1",
SN95031_VIB1C5, 1, 0),
SND_SOC_DAPM_DAC("Vibra2 DAC", "Vibra2",
SN95031_VIB2C5, 1, 0),
};
static const struct snd_soc_dapm_route sn95031_audio_map[] = {
/* headset and earpiece map */
{ "HPOUTL", NULL, "Headset Left Playback" },
{ "HPOUTR", NULL, "Headset Right Playback" },
{ "EPOUT", NULL, "Earpiece Playback" },
{ "Headset Left Playback", NULL, "Headset Left Filter"},
{ "Headset Right Playback", NULL, "Headset Right Filter"},
{ "Earpiece Playback", NULL, "Headset Left Filter"},
{ "Headset Left Filter", NULL, "HSDAC Left"},
{ "Headset Right Filter", NULL, "HSDAC Right"},
{ "HSDAC Left", NULL, "Headset Rail"},
{ "HSDAC Right", NULL, "Headset Rail"},
/* speaker map */
{ "IHFOUTL", "NULL", "Speaker Left Playback"},
{ "IHFOUTR", "NULL", "Speaker Right Playback"},
{ "Speaker Left Playback", NULL, "Speaker Left Filter"},
{ "Speaker Right Playback", NULL, "Speaker Right Filter"},
{ "Speaker Left Filter", NULL, "IHFDAC Left"},
{ "Speaker Right Filter", NULL, "IHFDAC Right"},
{ "IHFDAC Left", NULL, "Speaker Rail"},
{ "IHFDAC Right", NULL, "Speaker Rail"},
/* vibra map */
{ "VIB1OUT", NULL, "Vibra1 Playback"},
{ "Vibra1 Playback", NULL, "Vibra1 DAC"},
{ "VIB2OUT", NULL, "Vibra2 Playback"},
{ "Vibra2 Playback", NULL, "Vibra2 DAC"},
/* lineout */
{ "LINEOUTL", NULL, "Lineout Left Playback"},
{ "LINEOUTR", NULL, "Lineout Right Playback"},
{ "Lineout Left Playback", NULL, "Headset Left Filter"},
{ "Lineout Left Playback", NULL, "Speaker Left Filter"},
{ "Lineout Left Playback", NULL, "Vibra1 DAC"},
{ "Lineout Right Playback", NULL, "Headset Right Filter"},
{ "Lineout Right Playback", NULL, "Speaker Right Filter"},
{ "Lineout Right Playback", NULL, "Vibra2 DAC"},
};
/* speaker and headset mutes, for audio pops and clicks */
static int sn95031_pcm_hs_mute(struct snd_soc_dai *dai, int mute)
{
snd_soc_update_bits(dai->codec,
SN95031_HSLVOLCTRL, BIT(7), (!mute << 7));
snd_soc_update_bits(dai->codec,
SN95031_HSRVOLCTRL, BIT(7), (!mute << 7));
return 0;
}
static int sn95031_pcm_spkr_mute(struct snd_soc_dai *dai, int mute)
{
snd_soc_update_bits(dai->codec,
SN95031_IHFLVOLCTRL, BIT(7), (!mute << 7));
snd_soc_update_bits(dai->codec,
SN95031_IHFRVOLCTRL, BIT(7), (!mute << 7));
return 0;
}
int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
unsigned int format, rate;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
format = BIT(4)|BIT(5);
break;
case SNDRV_PCM_FORMAT_S24_LE:
format = 0;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(dai->codec, SN95031_PCM2C2,
BIT(4)|BIT(5), format);
switch (params_rate(params)) {
case 48000:
pr_debug("RATE_48000\n");
rate = 0;
break;
case 44100:
pr_debug("RATE_44100\n");
rate = BIT(7);
break;
default:
pr_err("ERR rate %d\n", params_rate(params));
return -EINVAL;
}
snd_soc_update_bits(dai->codec, SN95031_PCM1C1, BIT(7), rate);
return 0;
}
/* Codec DAI section */
static struct snd_soc_dai_ops sn95031_headset_dai_ops = {
.digital_mute = sn95031_pcm_hs_mute,
.hw_params = sn95031_pcm_hw_params,
};
static struct snd_soc_dai_ops sn95031_speaker_dai_ops = {
.digital_mute = sn95031_pcm_spkr_mute,
.hw_params = sn95031_pcm_hw_params,
};
static struct snd_soc_dai_ops sn95031_vib1_dai_ops = {
.hw_params = sn95031_pcm_hw_params,
};
static struct snd_soc_dai_ops sn95031_vib2_dai_ops = {
.hw_params = sn95031_pcm_hw_params,
};
struct snd_soc_dai_driver sn95031_dais[] = {
{
.name = "SN95031 Headset",
.playback = {
.stream_name = "Headset",
.channels_min = 2,
.channels_max = 2,
.rates = SN95031_RATES,
.formats = SN95031_FORMATS,
},
.ops = &sn95031_headset_dai_ops,
},
{ .name = "SN95031 Speaker",
.playback = {
.stream_name = "Speaker",
.channels_min = 2,
.channels_max = 2,
.rates = SN95031_RATES,
.formats = SN95031_FORMATS,
},
.ops = &sn95031_speaker_dai_ops,
},
{ .name = "SN95031 Vibra1",
.playback = {
.stream_name = "Vibra1",
.channels_min = 1,
.channels_max = 1,
.rates = SN95031_RATES,
.formats = SN95031_FORMATS,
},
.ops = &sn95031_vib1_dai_ops,
},
{ .name = "SN95031 Vibra2",
.playback = {
.stream_name = "Vibra2",
.channels_min = 1,
.channels_max = 1,
.rates = SN95031_RATES,
.formats = SN95031_FORMATS,
},
.ops = &sn95031_vib2_dai_ops,
},
};
/* codec registration */
static int sn95031_codec_probe(struct snd_soc_codec *codec)
{
int ret;
pr_debug("codec_probe called\n");
codec->dapm.bias_level = SND_SOC_BIAS_OFF;
codec->dapm.idle_bias_off = 1;
/* PCM interface config
* This sets the pcm rx slot conguration to max 6 slots
* for max 4 dais (2 stereo and 2 mono)
*/
snd_soc_write(codec, SN95031_PCM2RXSLOT01, 0x10);
snd_soc_write(codec, SN95031_PCM2RXSLOT23, 0x32);
snd_soc_write(codec, SN95031_PCM2RXSLOT45, 0x54);
/* pcm port setting
* This sets the pcm port to slave and clock at 19.2Mhz which
* can support 6slots, sampling rate set per stream in hw-params
*/
snd_soc_write(codec, SN95031_PCM1C1, 0x00);
snd_soc_write(codec, SN95031_PCM2C1, 0x01);
snd_soc_write(codec, SN95031_PCM2C2, 0x0A);
snd_soc_write(codec, SN95031_HSMIXER, BIT(0)|BIT(4));
/* vendor vibra workround, the vibras are muted by
* custom register so unmute them
*/
snd_soc_write(codec, SN95031_SSR5, 0x80);
snd_soc_write(codec, SN95031_SSR6, 0x80);
snd_soc_write(codec, SN95031_VIB1C5, 0x00);
snd_soc_write(codec, SN95031_VIB2C5, 0x00);
/* configure vibras for pcm port */
snd_soc_write(codec, SN95031_VIB1C3, 0x00);
snd_soc_write(codec, SN95031_VIB2C3, 0x00);
/* soft mute ramp time */
snd_soc_write(codec, SN95031_SOFTMUTE, 0x3);
/* fix the initial volume at 1dB,
* default in +9dB,
* 1dB give optimal swing on DAC, amps
*/
snd_soc_write(codec, SN95031_HSLVOLCTRL, 0x08);
snd_soc_write(codec, SN95031_HSRVOLCTRL, 0x08);
snd_soc_write(codec, SN95031_IHFLVOLCTRL, 0x08);
snd_soc_write(codec, SN95031_IHFRVOLCTRL, 0x08);
/* dac mode and lineout workaround */
snd_soc_write(codec, SN95031_SSR2, 0x10);
snd_soc_write(codec, SN95031_SSR3, 0x40);
ret = snd_soc_dapm_new_controls(&codec->dapm, sn95031_dapm_widgets,
ARRAY_SIZE(sn95031_dapm_widgets));
if (ret)
pr_err("soc_dapm_new_control failed %d", ret);
ret = snd_soc_dapm_add_routes(&codec->dapm, sn95031_audio_map,
ARRAY_SIZE(sn95031_audio_map));
if (ret)
pr_err("soc_dapm_add_routes failed %d", ret);
return ret;
}
static int sn95031_codec_remove(struct snd_soc_codec *codec)
{
pr_debug("codec_remove called\n");
sn95031_set_vaud_bias(codec, SND_SOC_BIAS_OFF);
return 0;
}
struct snd_soc_codec_driver sn95031_codec = {
.probe = sn95031_codec_probe,
.remove = sn95031_codec_remove,
.read = sn95031_read,
.write = sn95031_write,
.set_bias_level = sn95031_set_vaud_bias,
};
static int __devinit sn95031_device_probe(struct platform_device *pdev)
{
pr_debug("codec device probe called for %s\n", dev_name(&pdev->dev));
return snd_soc_register_codec(&pdev->dev, &sn95031_codec,
sn95031_dais, ARRAY_SIZE(sn95031_dais));
}
static int __devexit sn95031_device_remove(struct platform_device *pdev)
{
pr_debug("codec device remove called\n");
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver sn95031_codec_driver = {
.driver = {
.name = "sn95031",
.owner = THIS_MODULE,
},
.probe = sn95031_device_probe,
.remove = sn95031_device_remove,
};
static int __init sn95031_init(void)
{
pr_debug("driver init called\n");
return platform_driver_register(&sn95031_codec_driver);
}
module_init(sn95031_init);
static void __exit sn95031_exit(void)
{
pr_debug("driver exit called\n");
platform_driver_unregister(&sn95031_codec_driver);
}
module_exit(sn95031_exit);
MODULE_DESCRIPTION("ASoC TI SN95031 codec driver");
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:sn95031");
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