321 lines
7.5 KiB
C
321 lines
7.5 KiB
C
/*
|
|
* 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 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;
|
|
}
|
|
|
|
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_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_analog_suspend(struct snd_soc_card *card)
|
|
{
|
|
raumfeld_enable_audio(false);
|
|
return 0;
|
|
}
|
|
|
|
static int raumfeld_analog_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 *cpu_dai = rtd->cpu_dai;
|
|
int 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;
|
|
}
|
|
|
|
/* 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_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,
|
|
};
|
|
|
|
#define DAI_LINK_CS4270 \
|
|
{ \
|
|
.name = "CS4270", \
|
|
.stream_name = "CS4270", \
|
|
.cpu_dai_name = "pxa-ssp-dai.0", \
|
|
.platform_name = "pxa-pcm-audio", \
|
|
.codec_dai_name = "cs4270-hifi", \
|
|
.codec_name = "cs4270.0-0048", \
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | \
|
|
SND_SOC_DAIFMT_NB_NF | \
|
|
SND_SOC_DAIFMT_CBS_CFS, \
|
|
.ops = &raumfeld_cs4270_ops, \
|
|
}
|
|
|
|
#define DAI_LINK_AK4104 \
|
|
{ \
|
|
.name = "ak4104", \
|
|
.stream_name = "Playback", \
|
|
.cpu_dai_name = "pxa-ssp-dai.1", \
|
|
.codec_dai_name = "ak4104-hifi", \
|
|
.platform_name = "pxa-pcm-audio", \
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | \
|
|
SND_SOC_DAIFMT_NB_NF | \
|
|
SND_SOC_DAIFMT_CBS_CFS, \
|
|
.ops = &raumfeld_ak4104_ops, \
|
|
.codec_name = "spi0.0", \
|
|
}
|
|
|
|
static struct snd_soc_dai_link snd_soc_raumfeld_connector_dai[] =
|
|
{
|
|
DAI_LINK_CS4270,
|
|
DAI_LINK_AK4104,
|
|
};
|
|
|
|
static struct snd_soc_dai_link snd_soc_raumfeld_speaker_dai[] =
|
|
{
|
|
DAI_LINK_CS4270,
|
|
};
|
|
|
|
static struct snd_soc_card snd_soc_raumfeld_connector = {
|
|
.name = "Raumfeld Connector",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = snd_soc_raumfeld_connector_dai,
|
|
.num_links = ARRAY_SIZE(snd_soc_raumfeld_connector_dai),
|
|
.suspend_post = raumfeld_analog_suspend,
|
|
.resume_pre = raumfeld_analog_resume,
|
|
};
|
|
|
|
static struct snd_soc_card snd_soc_raumfeld_speaker = {
|
|
.name = "Raumfeld Speaker",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = snd_soc_raumfeld_speaker_dai,
|
|
.num_links = ARRAY_SIZE(snd_soc_raumfeld_speaker_dai),
|
|
.suspend_post = raumfeld_analog_suspend,
|
|
.resume_pre = raumfeld_analog_resume,
|
|
};
|
|
|
|
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 analog device */
|
|
raumfeld_audio_device = platform_device_alloc("soc-audio", 0);
|
|
if (!raumfeld_audio_device)
|
|
return -ENOMEM;
|
|
|
|
if (machine_is_raumfeld_speaker())
|
|
platform_set_drvdata(raumfeld_audio_device,
|
|
&snd_soc_raumfeld_speaker);
|
|
|
|
if (machine_is_raumfeld_connector())
|
|
platform_set_drvdata(raumfeld_audio_device,
|
|
&snd_soc_raumfeld_connector);
|
|
|
|
ret = platform_device_add(raumfeld_audio_device);
|
|
if (ret < 0) {
|
|
platform_device_put(raumfeld_audio_device);
|
|
return ret;
|
|
}
|
|
|
|
raumfeld_enable_audio(true);
|
|
return 0;
|
|
}
|
|
|
|
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");
|