+++ /dev/null
-/*
- * 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 const 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");
projects / linux-block.git / commitdiff