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android_kernel_motorola_sm6225/sound/soc/pxa/raumfeld.c
Mark Brown 70b2ac126a ASoC: Use card rather than soc-audio device to card PM functions 
The platform device for the card is tied closely to the soc-audio
implementation which we're currently trying to remove in favour of
allowing cards to have their own devices. Begin removing it by
replacing it with the card in the suspend and resume callbacks we
give to cards, also taking the opportunity to remove the legacy
suspend types which are currently hard coded anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-01-27 11:55:53 +00:00

311 lines
7.1 KiB
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/*
* raumfeld_audio.c -- SoC audio for Raumfeld audio devices
*
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
*
* based on code from:
*
* Wolfson Microelectronics PLC.
* Openedhand Ltd.
* 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/i2c.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include "pxa-ssp.h"
#define GPIO_SPDIF_RESET (38)
#define GPIO_MCLK_RESET (111)
#define GPIO_CODEC_RESET (120)
static struct i2c_client *max9486_client;
static struct i2c_board_info max9486_hwmon_info = {
I2C_BOARD_INFO("max9485", 0x63),
};
#define MAX9485_MCLK_FREQ_112896 0x22
#define MAX9485_MCLK_FREQ_122880 0x23
#define MAX9485_MCLK_FREQ_225792 0x32
#define MAX9485_MCLK_FREQ_245760 0x33
static void set_max9485_clk(char clk)
{
i2c_master_send(max9486_client, &clk, 1);
}
static void raumfeld_enable_audio(bool en)
{
if (en) {
gpio_set_value(GPIO_MCLK_RESET, 1);
/* wait some time to let the clocks become stable */
msleep(100);
gpio_set_value(GPIO_SPDIF_RESET, 1);
gpio_set_value(GPIO_CODEC_RESET, 1);
} else {
gpio_set_value(GPIO_MCLK_RESET, 0);
gpio_set_value(GPIO_SPDIF_RESET, 0);
gpio_set_value(GPIO_CODEC_RESET, 0);
}
}
/* CS4270 */
static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
/* set freq to 0 to enable all possible codec sample rates */
return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
}
static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
/* set freq to 0 to enable all possible codec sample rates */
snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
}
static int raumfeld_cs4270_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int fmt, clk = 0;
int ret = 0;
switch (params_rate(params)) {
case 44100:
set_max9485_clk(MAX9485_MCLK_FREQ_112896);
clk = 11289600;
break;
case 48000:
set_max9485_clk(MAX9485_MCLK_FREQ_122880);
clk = 12288000;
break;
case 88200:
set_max9485_clk(MAX9485_MCLK_FREQ_225792);
clk = 22579200;
break;
case 96000:
set_max9485_clk(MAX9485_MCLK_FREQ_245760);
clk = 24576000;
break;
default:
return -EINVAL;
}
fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
/* setup the CODEC DAI */
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
if (ret < 0)
return ret;
/* setup the CPU DAI */
ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops raumfeld_cs4270_ops = {
.startup = raumfeld_cs4270_startup,
.shutdown = raumfeld_cs4270_shutdown,
.hw_params = raumfeld_cs4270_hw_params,
};
static int raumfeld_line_suspend(struct snd_soc_card *card)
{
raumfeld_enable_audio(false);
return 0;
}
static int raumfeld_line_resume(struct snd_soc_card *card)
{
raumfeld_enable_audio(true);
return 0;
}
/* AK4104 */
static int raumfeld_ak4104_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int fmt, ret = 0, clk = 0;
switch (params_rate(params)) {
case 44100:
set_max9485_clk(MAX9485_MCLK_FREQ_112896);
clk = 11289600;
break;
case 48000:
set_max9485_clk(MAX9485_MCLK_FREQ_122880);
clk = 12288000;
break;
case 88200:
set_max9485_clk(MAX9485_MCLK_FREQ_225792);
clk = 22579200;
break;
case 96000:
set_max9485_clk(MAX9485_MCLK_FREQ_245760);
clk = 24576000;
break;
default:
return -EINVAL;
}
fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;
/* setup the CODEC DAI */
ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* setup the CPU DAI */
ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops raumfeld_ak4104_ops = {
.hw_params = raumfeld_ak4104_hw_params,
};
static struct snd_soc_dai_link raumfeld_dai[] = {
{
.name = "ak4104",
.stream_name = "Playback",
.cpu_dai_name = "pxa-ssp-dai.1",
.codec_dai_name = "ak4104-hifi",
.platform_name = "pxa-pcm-audio",
.ops = &raumfeld_ak4104_ops,
.codec_name = "ak4104-codec.0",
},
{
.name = "CS4270",
.stream_name = "CS4270",
.cpu_dai_name = "pxa-ssp-dai.0",
.platform_name = "pxa-pcm-audio",
.codec_dai_name = "cs4270-hifi",
.codec_name = "cs4270-codec.0-0048",
.ops = &raumfeld_cs4270_ops,
},};
static struct snd_soc_card snd_soc_raumfeld = {
.name = "Raumfeld",
.dai_link = raumfeld_dai,
.suspend_post = raumfeld_line_suspend,
.resume_pre = raumfeld_line_resume,
.num_links = ARRAY_SIZE(raumfeld_dai),
};
static struct platform_device *raumfeld_audio_device;
static int __init raumfeld_audio_init(void)
{
int ret;
if (!machine_is_raumfeld_speaker() &&
!machine_is_raumfeld_connector())
return 0;
max9486_client = i2c_new_device(i2c_get_adapter(0),
&max9486_hwmon_info);
if (!max9486_client)
return -ENOMEM;
set_max9485_clk(MAX9485_MCLK_FREQ_122880);
/* Register LINE and SPDIF */
raumfeld_audio_device = platform_device_alloc("soc-audio", 0);
if (!raumfeld_audio_device)
return -ENOMEM;
platform_set_drvdata(raumfeld_audio_device,
&snd_soc_raumfeld);
ret = platform_device_add(raumfeld_audio_device);
/* no S/PDIF on Speakers */
if (machine_is_raumfeld_speaker())
return ret;
raumfeld_enable_audio(true);
return ret;
}
static void __exit raumfeld_audio_exit(void)
{
raumfeld_enable_audio(false);
platform_device_unregister(raumfeld_audio_device);
i2c_unregister_device(max9486_client);
gpio_free(GPIO_MCLK_RESET);
gpio_free(GPIO_CODEC_RESET);
gpio_free(GPIO_SPDIF_RESET);
}
module_init(raumfeld_audio_init);
module_exit(raumfeld_audio_exit);
/* Module information */
MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
MODULE_DESCRIPTION("Raumfeld audio SoC");
MODULE_LICENSE("GPL");
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