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Diffstat (limited to 'sound/soc/pxa/raumfeld.c')
-rw-r--r--sound/soc/pxa/raumfeld.c335
1 files changed, 335 insertions, 0 deletions
diff --git a/sound/soc/pxa/raumfeld.c b/sound/soc/pxa/raumfeld.c
new file mode 100644
index 00000000000..acfce1c0f1c
--- /dev/null
+++ b/sound/soc/pxa/raumfeld.c
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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 <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/cs4270.h"
+#include "../codecs/ak4104.h"
+#include "pxa2xx-pcm.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
+
+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->dai->codec_dai;
+
+ set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+
+ return snd_soc_dai_set_sysclk(codec_dai, 0, 11289600, 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->dai->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ unsigned int fmt, clk = 0;
+ int ret = 0;
+
+ switch (params_rate(params)) {
+ case 8000:
+ case 16000:
+ case 48000:
+ case 96000:
+ set_max9485_clk(MAX9485_MCLK_FREQ_122880);
+ clk = 12288000;
+ break;
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+ clk = 11289600;
+ break;
+ }
+
+ 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, 0, 1);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_ops raumfeld_cs4270_ops = {
+ .startup = raumfeld_cs4270_startup,
+ .hw_params = raumfeld_cs4270_hw_params,
+};
+
+static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ raumfeld_enable_audio(false);
+ return 0;
+}
+
+static int raumfeld_line_resume(struct platform_device *pdev)
+{
+ raumfeld_enable_audio(true);
+ return 0;
+}
+
+static struct snd_soc_dai_link raumfeld_line_dai = {
+ .name = "CS4270",
+ .stream_name = "CS4270",
+ .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
+ .codec_dai = &cs4270_dai,
+ .ops = &raumfeld_cs4270_ops,
+};
+
+static struct snd_soc_card snd_soc_line_raumfeld = {
+ .name = "Raumfeld analog",
+ .platform = &pxa2xx_soc_platform,
+ .dai_link = &raumfeld_line_dai,
+ .suspend_post = raumfeld_line_suspend,
+ .resume_pre = raumfeld_line_resume,
+ .num_links = 1,
+};
+
+
+/* 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->dai->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ int fmt, ret = 0, clk = 0;
+
+ switch (params_rate(params)) {
+ case 8000:
+ case 16000:
+ case 48000:
+ case 96000:
+ set_max9485_clk(MAX9485_MCLK_FREQ_122880);
+ clk = 12288000;
+ break;
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+ clk = 11289600;
+ break;
+ }
+
+ 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, 0, 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_spdif_dai = {
+ .name = "ak4104",
+ .stream_name = "Playback",
+ .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP2],
+ .codec_dai = &ak4104_dai,
+ .ops = &raumfeld_ak4104_ops,
+};
+
+static struct snd_soc_card snd_soc_spdif_raumfeld = {
+ .name = "Raumfeld S/PDIF",
+ .platform = &pxa2xx_soc_platform,
+ .dai_link = &raumfeld_spdif_dai,
+ .num_links = 1
+};
+
+/* raumfeld_audio audio subsystem */
+static struct snd_soc_device raumfeld_line_devdata = {
+ .card = &snd_soc_line_raumfeld,
+ .codec_dev = &soc_codec_device_cs4270,
+};
+
+static struct snd_soc_device raumfeld_spdif_devdata = {
+ .card = &snd_soc_spdif_raumfeld,
+ .codec_dev = &soc_codec_device_ak4104,
+};
+
+static struct platform_device *raumfeld_audio_line_device;
+static struct platform_device *raumfeld_audio_spdif_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);
+
+ /* LINE */
+ raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0);
+ if (!raumfeld_audio_line_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(raumfeld_audio_line_device,
+ &raumfeld_line_devdata);
+ raumfeld_line_devdata.dev = &raumfeld_audio_line_device->dev;
+ ret = platform_device_add(raumfeld_audio_line_device);
+ if (ret)
+ platform_device_put(raumfeld_audio_line_device);
+
+ /* no S/PDIF on Speakers */
+ if (machine_is_raumfeld_speaker())
+ return ret;
+
+ /* S/PDIF */
+ raumfeld_audio_spdif_device = platform_device_alloc("soc-audio", 1);
+ if (!raumfeld_audio_spdif_device) {
+ platform_device_put(raumfeld_audio_line_device);
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(raumfeld_audio_spdif_device,
+ &raumfeld_spdif_devdata);
+ raumfeld_spdif_devdata.dev = &raumfeld_audio_spdif_device->dev;
+ ret = platform_device_add(raumfeld_audio_spdif_device);
+ if (ret) {
+ platform_device_put(raumfeld_audio_line_device);
+ platform_device_put(raumfeld_audio_spdif_device);
+ }
+
+ raumfeld_enable_audio(true);
+
+ return ret;
+}
+
+static void __exit raumfeld_audio_exit(void)
+{
+ raumfeld_enable_audio(false);
+
+ platform_device_unregister(raumfeld_audio_line_device);
+
+ if (machine_is_raumfeld_connector())
+ platform_device_unregister(raumfeld_audio_spdif_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");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-15 21:42:33 +0000