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kernel-ark/sound/soc/pxa/spitz.c
Mark Brown 875065491f ASoC: Rename snd_soc_card to snd_soc_machine 
One of the issues with the ASoC v1 API which has been addressed in the
ASoC v2 work that Liam Girdwood has done is that the ALSA card provided
by ASoC is distributed around the ASoC structures. For example, machine
wide data such as the struct snd_card are maintained as part of the
CODEC data structure, preventing the use of multiple codecs. This has
been addressed by refactoring the data structures so that all the data
for the ALSA card is contained in a single structure snd_soc_card which
replaces the existing snd_soc_machine and snd_soc_device.

Begin the process of backporting this by renaming struct snd_soc_machine
to struct snd_soc_card, better reflecting its function and bringing it
closer to standard ALSA terminology.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-21 14:02:01 +00:00

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/*
* spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
*
* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
*
* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
* Richard Purdie <richard@openedhand.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.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <mach/pxa-regs.h>
#include <mach/hardware.h>
#include <mach/spitz.h>
#include "../codecs/wm8750.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-i2s.h"
#define SPITZ_HP 0
#define SPITZ_MIC 1
#define SPITZ_LINE 2
#define SPITZ_HEADSET 3
#define SPITZ_HP_OFF 4
#define SPITZ_SPK_ON 0
#define SPITZ_SPK_OFF 1
/* audio clock in Hz - rounded from 12.235MHz */
#define SPITZ_AUDIO_CLOCK 12288000
static int spitz_jack_func;
static int spitz_spk_func;
static void spitz_ext_control(struct snd_soc_codec *codec)
{
if (spitz_spk_func == SPITZ_SPK_ON)
snd_soc_dapm_enable_pin(codec, "Ext Spk");
else
snd_soc_dapm_disable_pin(codec, "Ext Spk");
/* set up jack connection */
switch (spitz_jack_func) {
case SPITZ_HP:
/* enable and unmute hp jack, disable mic bias */
snd_soc_dapm_disable_pin(codec, "Headset Jack");
snd_soc_dapm_disable_pin(codec, "Mic Jack");
snd_soc_dapm_disable_pin(codec, "Line Jack");
snd_soc_dapm_enable_pin(codec, "Headphone Jack");
gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
break;
case SPITZ_MIC:
/* enable mic jack and bias, mute hp */
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_disable_pin(codec, "Headset Jack");
snd_soc_dapm_disable_pin(codec, "Line Jack");
snd_soc_dapm_enable_pin(codec, "Mic Jack");
gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
break;
case SPITZ_LINE:
/* enable line jack, disable mic bias and mute hp */
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_disable_pin(codec, "Headset Jack");
snd_soc_dapm_disable_pin(codec, "Mic Jack");
snd_soc_dapm_enable_pin(codec, "Line Jack");
gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
break;
case SPITZ_HEADSET:
/* enable and unmute headset jack enable mic bias, mute L hp */
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_enable_pin(codec, "Mic Jack");
snd_soc_dapm_disable_pin(codec, "Line Jack");
snd_soc_dapm_enable_pin(codec, "Headset Jack");
gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
break;
case SPITZ_HP_OFF:
/* jack removed, everything off */
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_disable_pin(codec, "Headset Jack");
snd_soc_dapm_disable_pin(codec, "Mic Jack");
snd_soc_dapm_disable_pin(codec, "Line Jack");
gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
break;
}
snd_soc_dapm_sync(codec);
}
static int spitz_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->socdev->codec;
/* check the jack status at stream startup */
spitz_ext_control(codec);
return 0;
}
static int spitz_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 *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
unsigned int clk = 0;
int ret = 0;
switch (params_rate(params)) {
case 8000:
case 16000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
clk = 11289600;
break;
}
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set the I2S system clock as input (unused) */
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops spitz_ops = {
.startup = spitz_startup,
.hw_params = spitz_hw_params,
};
static int spitz_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = spitz_jack_func;
return 0;
}
static int spitz_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (spitz_jack_func == ucontrol->value.integer.value[0])
return 0;
spitz_jack_func = ucontrol->value.integer.value[0];
spitz_ext_control(codec);
return 1;
}
static int spitz_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = spitz_spk_func;
return 0;
}
static int spitz_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (spitz_spk_func == ucontrol->value.integer.value[0])
return 0;
spitz_spk_func = ucontrol->value.integer.value[0];
spitz_ext_control(codec);
return 1;
}
static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
if (machine_is_borzoi() || machine_is_spitz())
gpio_set_value(SPITZ_GPIO_MIC_BIAS,
SND_SOC_DAPM_EVENT_ON(event));
if (machine_is_akita())
gpio_set_value(AKITA_GPIO_MIC_BIAS,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
/* spitz machine dapm widgets */
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_LINE("Line Jack", NULL),
/* headset is a mic and mono headphone */
SND_SOC_DAPM_HP("Headset Jack", NULL),
};
/* Spitz machine audio_map */
static const struct snd_soc_dapm_route audio_map[] = {
/* headphone connected to LOUT1, ROUT1 */
{"Headphone Jack", NULL, "LOUT1"},
{"Headphone Jack", NULL, "ROUT1"},
/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
{"Headset Jack", NULL, "ROUT1"},
/* ext speaker connected to LOUT2, ROUT2 */
{"Ext Spk", NULL , "ROUT2"},
{"Ext Spk", NULL , "LOUT2"},
/* mic is connected to input 1 - with bias */
{"LINPUT1", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic Jack"},
/* line is connected to input 1 - no bias */
{"LINPUT1", NULL, "Line Jack"},
};
static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
"Off"};
static const char *spk_function[] = {"On", "Off"};
static const struct soc_enum spitz_enum[] = {
SOC_ENUM_SINGLE_EXT(5, jack_function),
SOC_ENUM_SINGLE_EXT(2, spk_function),
};
static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
spitz_set_jack),
SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
spitz_set_spk),
};
/*
* Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
*/
static int spitz_wm8750_init(struct snd_soc_codec *codec)
{
int i, err;
/* NC codec pins */
snd_soc_dapm_nc_pin(codec, "RINPUT1");
snd_soc_dapm_nc_pin(codec, "LINPUT2");
snd_soc_dapm_nc_pin(codec, "RINPUT2");
snd_soc_dapm_nc_pin(codec, "LINPUT3");
snd_soc_dapm_nc_pin(codec, "RINPUT3");
snd_soc_dapm_nc_pin(codec, "OUT3");
snd_soc_dapm_nc_pin(codec, "MONO1");
/* Add spitz specific controls */
for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
if (err < 0)
return err;
}
/* Add spitz specific widgets */
snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
ARRAY_SIZE(wm8750_dapm_widgets));
/* Set up spitz specific audio paths */
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
snd_soc_dapm_sync(codec);
return 0;
}
/* spitz digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link spitz_dai = {
.name = "wm8750",
.stream_name = "WM8750",
.cpu_dai = &pxa_i2s_dai,
.codec_dai = &wm8750_dai,
.init = spitz_wm8750_init,
.ops = &spitz_ops,
};
/* spitz audio machine driver */
static struct snd_soc_card snd_soc_spitz = {
.name = "Spitz",
.dai_link = &spitz_dai,
.num_links = 1,
};
/* spitz audio private data */
static struct wm8750_setup_data spitz_wm8750_setup = {
.i2c_bus = 0,
.i2c_address = 0x1b,
};
/* spitz audio subsystem */
static struct snd_soc_device spitz_snd_devdata = {
.card = &snd_soc_spitz,
.platform = &pxa2xx_soc_platform,
.codec_dev = &soc_codec_dev_wm8750,
.codec_data = &spitz_wm8750_setup,
};
static struct platform_device *spitz_snd_device;
static int __init spitz_init(void)
{
int ret;
if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
return -ENODEV;
spitz_snd_device = platform_device_alloc("soc-audio", -1);
if (!spitz_snd_device)
return -ENOMEM;
platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
spitz_snd_devdata.dev = &spitz_snd_device->dev;
ret = platform_device_add(spitz_snd_device);
if (ret)
platform_device_put(spitz_snd_device);
return ret;
}
static void __exit spitz_exit(void)
{
platform_device_unregister(spitz_snd_device);
}
module_init(spitz_init);
module_exit(spitz_exit);
MODULE_AUTHOR("Richard Purdie");
MODULE_DESCRIPTION("ALSA SoC Spitz");
MODULE_LICENSE("GPL");
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