2 * raumfeld_audio.c -- SoC audio for Raumfeld audio devices
4 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
8 * Wolfson Microelectronics PLC.
10 * Liam Girdwood <lrg@slimlogic.co.uk>
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 #include <linux/module.h>
20 #include <linux/i2c.h>
21 #include <linux/delay.h>
22 #include <linux/gpio.h>
23 #include <sound/pcm.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
27 #include <asm/mach-types.h>
29 #include "../codecs/cs4270.h"
30 #include "../codecs/ak4104.h"
31 #include "pxa2xx-pcm.h"
34 #define GPIO_SPDIF_RESET (38)
35 #define GPIO_MCLK_RESET (111)
36 #define GPIO_CODEC_RESET (120)
38 static struct i2c_client *max9486_client;
39 static struct i2c_board_info max9486_hwmon_info = {
40 I2C_BOARD_INFO("max9485", 0x63),
43 #define MAX9485_MCLK_FREQ_112896 0x22
44 #define MAX9485_MCLK_FREQ_122880 0x23
46 static void set_max9485_clk(char clk)
48 i2c_master_send(max9486_client, &clk, 1);
51 static void raumfeld_enable_audio(bool en)
54 gpio_set_value(GPIO_MCLK_RESET, 1);
56 /* wait some time to let the clocks become stable */
59 gpio_set_value(GPIO_SPDIF_RESET, 1);
60 gpio_set_value(GPIO_CODEC_RESET, 1);
62 gpio_set_value(GPIO_MCLK_RESET, 0);
63 gpio_set_value(GPIO_SPDIF_RESET, 0);
64 gpio_set_value(GPIO_CODEC_RESET, 0);
69 static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
71 struct snd_soc_pcm_runtime *rtd = substream->private_data;
72 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
74 set_max9485_clk(MAX9485_MCLK_FREQ_112896);
76 return snd_soc_dai_set_sysclk(codec_dai, 0, 11289600, 0);
79 static int raumfeld_cs4270_hw_params(struct snd_pcm_substream *substream,
80 struct snd_pcm_hw_params *params)
82 struct snd_soc_pcm_runtime *rtd = substream->private_data;
83 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
84 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
85 unsigned int fmt, clk = 0;
88 switch (params_rate(params)) {
93 set_max9485_clk(MAX9485_MCLK_FREQ_122880);
100 set_max9485_clk(MAX9485_MCLK_FREQ_112896);
105 fmt = SND_SOC_DAIFMT_I2S |
106 SND_SOC_DAIFMT_NB_NF |
107 SND_SOC_DAIFMT_CBS_CFS;
109 /* setup the CODEC DAI */
110 ret = snd_soc_dai_set_fmt(codec_dai, fmt);
114 ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
118 /* setup the CPU DAI */
119 ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
123 ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
127 ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
131 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1);
138 static struct snd_soc_ops raumfeld_cs4270_ops = {
139 .startup = raumfeld_cs4270_startup,
140 .hw_params = raumfeld_cs4270_hw_params,
143 static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
145 raumfeld_enable_audio(false);
149 static int raumfeld_line_resume(struct platform_device *pdev)
151 raumfeld_enable_audio(true);
155 static struct snd_soc_dai_link raumfeld_line_dai = {
157 .stream_name = "CS4270",
158 .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
159 .codec_dai = &cs4270_dai,
160 .ops = &raumfeld_cs4270_ops,
163 static struct snd_soc_card snd_soc_line_raumfeld = {
164 .name = "Raumfeld analog",
165 .platform = &pxa2xx_soc_platform,
166 .dai_link = &raumfeld_line_dai,
167 .suspend_post = raumfeld_line_suspend,
168 .resume_pre = raumfeld_line_resume,
175 static int raumfeld_ak4104_hw_params(struct snd_pcm_substream *substream,
176 struct snd_pcm_hw_params *params)
178 struct snd_soc_pcm_runtime *rtd = substream->private_data;
179 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
180 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
181 int fmt, ret = 0, clk = 0;
183 switch (params_rate(params)) {
188 set_max9485_clk(MAX9485_MCLK_FREQ_122880);
195 set_max9485_clk(MAX9485_MCLK_FREQ_112896);
200 fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;
202 /* setup the CODEC DAI */
203 ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
207 /* setup the CPU DAI */
208 ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
212 ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
216 ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
220 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1);
227 static struct snd_soc_ops raumfeld_ak4104_ops = {
228 .hw_params = raumfeld_ak4104_hw_params,
231 static struct snd_soc_dai_link raumfeld_spdif_dai = {
233 .stream_name = "Playback",
234 .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP2],
235 .codec_dai = &ak4104_dai,
236 .ops = &raumfeld_ak4104_ops,
239 static struct snd_soc_card snd_soc_spdif_raumfeld = {
240 .name = "Raumfeld S/PDIF",
241 .platform = &pxa2xx_soc_platform,
242 .dai_link = &raumfeld_spdif_dai,
246 /* raumfeld_audio audio subsystem */
247 static struct snd_soc_device raumfeld_line_devdata = {
248 .card = &snd_soc_line_raumfeld,
249 .codec_dev = &soc_codec_device_cs4270,
252 static struct snd_soc_device raumfeld_spdif_devdata = {
253 .card = &snd_soc_spdif_raumfeld,
254 .codec_dev = &soc_codec_device_ak4104,
257 static struct platform_device *raumfeld_audio_line_device;
258 static struct platform_device *raumfeld_audio_spdif_device;
260 static int __init raumfeld_audio_init(void)
264 if (!machine_is_raumfeld_speaker() &&
265 !machine_is_raumfeld_connector())
268 max9486_client = i2c_new_device(i2c_get_adapter(0),
269 &max9486_hwmon_info);
274 set_max9485_clk(MAX9485_MCLK_FREQ_122880);
277 raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0);
278 if (!raumfeld_audio_line_device)
281 platform_set_drvdata(raumfeld_audio_line_device,
282 &raumfeld_line_devdata);
283 raumfeld_line_devdata.dev = &raumfeld_audio_line_device->dev;
284 ret = platform_device_add(raumfeld_audio_line_device);
286 platform_device_put(raumfeld_audio_line_device);
288 /* no S/PDIF on Speakers */
289 if (machine_is_raumfeld_speaker())
293 raumfeld_audio_spdif_device = platform_device_alloc("soc-audio", 1);
294 if (!raumfeld_audio_spdif_device) {
295 platform_device_put(raumfeld_audio_line_device);
299 platform_set_drvdata(raumfeld_audio_spdif_device,
300 &raumfeld_spdif_devdata);
301 raumfeld_spdif_devdata.dev = &raumfeld_audio_spdif_device->dev;
302 ret = platform_device_add(raumfeld_audio_spdif_device);
304 platform_device_put(raumfeld_audio_line_device);
305 platform_device_put(raumfeld_audio_spdif_device);
308 raumfeld_enable_audio(true);
313 static void __exit raumfeld_audio_exit(void)
315 raumfeld_enable_audio(false);
317 platform_device_unregister(raumfeld_audio_line_device);
319 if (machine_is_raumfeld_connector())
320 platform_device_unregister(raumfeld_audio_spdif_device);
322 i2c_unregister_device(max9486_client);
324 gpio_free(GPIO_MCLK_RESET);
325 gpio_free(GPIO_CODEC_RESET);
326 gpio_free(GPIO_SPDIF_RESET);
329 module_init(raumfeld_audio_init);
330 module_exit(raumfeld_audio_exit);
332 /* Module information */
333 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
334 MODULE_DESCRIPTION("Raumfeld audio SoC");
335 MODULE_LICENSE("GPL");