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
45 #define MAX9485_MCLK_FREQ_225792 0x32
46 #define MAX9485_MCLK_FREQ_245760 0x33
48 static void set_max9485_clk(char clk
)
50 i2c_master_send(max9486_client
, &clk
, 1);
53 static void raumfeld_enable_audio(bool en
)
56 gpio_set_value(GPIO_MCLK_RESET
, 1);
58 /* wait some time to let the clocks become stable */
61 gpio_set_value(GPIO_SPDIF_RESET
, 1);
62 gpio_set_value(GPIO_CODEC_RESET
, 1);
64 gpio_set_value(GPIO_MCLK_RESET
, 0);
65 gpio_set_value(GPIO_SPDIF_RESET
, 0);
66 gpio_set_value(GPIO_CODEC_RESET
, 0);
71 static int raumfeld_cs4270_startup(struct snd_pcm_substream
*substream
)
73 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
74 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
76 /* set freq to 0 to enable all possible codec sample rates */
77 return snd_soc_dai_set_sysclk(codec_dai
, 0, 0, 0);
80 static void raumfeld_cs4270_shutdown(struct snd_pcm_substream
*substream
)
82 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
83 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
85 /* set freq to 0 to enable all possible codec sample rates */
86 snd_soc_dai_set_sysclk(codec_dai
, 0, 0, 0);
89 static int raumfeld_cs4270_hw_params(struct snd_pcm_substream
*substream
,
90 struct snd_pcm_hw_params
*params
)
92 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
93 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
94 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
95 unsigned int fmt
, clk
= 0;
98 switch (params_rate(params
)) {
100 set_max9485_clk(MAX9485_MCLK_FREQ_112896
);
104 set_max9485_clk(MAX9485_MCLK_FREQ_122880
);
108 set_max9485_clk(MAX9485_MCLK_FREQ_225792
);
112 set_max9485_clk(MAX9485_MCLK_FREQ_245760
);
119 fmt
= SND_SOC_DAIFMT_I2S
|
120 SND_SOC_DAIFMT_NB_NF
|
121 SND_SOC_DAIFMT_CBS_CFS
;
123 /* setup the CODEC DAI */
124 ret
= snd_soc_dai_set_fmt(codec_dai
, fmt
);
128 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, clk
, 0);
132 /* setup the CPU DAI */
133 ret
= snd_soc_dai_set_pll(cpu_dai
, 0, 0, 0, clk
);
137 ret
= snd_soc_dai_set_fmt(cpu_dai
, fmt
);
141 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, PXA_SSP_DIV_SCR
, 4);
145 ret
= snd_soc_dai_set_sysclk(cpu_dai
, PXA_SSP_CLK_EXT
, clk
, 1);
152 static struct snd_soc_ops raumfeld_cs4270_ops
= {
153 .startup
= raumfeld_cs4270_startup
,
154 .shutdown
= raumfeld_cs4270_shutdown
,
155 .hw_params
= raumfeld_cs4270_hw_params
,
158 static int raumfeld_line_suspend(struct platform_device
*pdev
, pm_message_t state
)
160 raumfeld_enable_audio(false);
164 static int raumfeld_line_resume(struct platform_device
*pdev
)
166 raumfeld_enable_audio(true);
170 static struct snd_soc_dai_link raumfeld_line_dai
= {
172 .stream_name
= "CS4270",
173 .cpu_dai
= &pxa_ssp_dai
[PXA_DAI_SSP1
],
174 .codec_dai
= &cs4270_dai
,
175 .ops
= &raumfeld_cs4270_ops
,
178 static struct snd_soc_card snd_soc_line_raumfeld
= {
179 .name
= "Raumfeld analog",
180 .platform
= &pxa2xx_soc_platform
,
181 .dai_link
= &raumfeld_line_dai
,
182 .suspend_post
= raumfeld_line_suspend
,
183 .resume_pre
= raumfeld_line_resume
,
190 static int raumfeld_ak4104_hw_params(struct snd_pcm_substream
*substream
,
191 struct snd_pcm_hw_params
*params
)
193 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
194 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
195 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
196 int fmt
, ret
= 0, clk
= 0;
198 switch (params_rate(params
)) {
200 set_max9485_clk(MAX9485_MCLK_FREQ_112896
);
204 set_max9485_clk(MAX9485_MCLK_FREQ_122880
);
208 set_max9485_clk(MAX9485_MCLK_FREQ_225792
);
212 set_max9485_clk(MAX9485_MCLK_FREQ_245760
);
219 fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
;
221 /* setup the CODEC DAI */
222 ret
= snd_soc_dai_set_fmt(codec_dai
, fmt
| SND_SOC_DAIFMT_CBS_CFS
);
226 /* setup the CPU DAI */
227 ret
= snd_soc_dai_set_pll(cpu_dai
, 0, 0, 0, clk
);
231 ret
= snd_soc_dai_set_fmt(cpu_dai
, fmt
| SND_SOC_DAIFMT_CBS_CFS
);
235 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, PXA_SSP_DIV_SCR
, 4);
239 ret
= snd_soc_dai_set_sysclk(cpu_dai
, PXA_SSP_CLK_EXT
, clk
, 1);
246 static struct snd_soc_ops raumfeld_ak4104_ops
= {
247 .hw_params
= raumfeld_ak4104_hw_params
,
250 static struct snd_soc_dai_link raumfeld_spdif_dai
= {
252 .stream_name
= "Playback",
253 .cpu_dai
= &pxa_ssp_dai
[PXA_DAI_SSP2
],
254 .codec_dai
= &ak4104_dai
,
255 .ops
= &raumfeld_ak4104_ops
,
258 static struct snd_soc_card snd_soc_spdif_raumfeld
= {
259 .name
= "Raumfeld S/PDIF",
260 .platform
= &pxa2xx_soc_platform
,
261 .dai_link
= &raumfeld_spdif_dai
,
265 /* raumfeld_audio audio subsystem */
266 static struct snd_soc_device raumfeld_line_devdata
= {
267 .card
= &snd_soc_line_raumfeld
,
268 .codec_dev
= &soc_codec_device_cs4270
,
271 static struct snd_soc_device raumfeld_spdif_devdata
= {
272 .card
= &snd_soc_spdif_raumfeld
,
273 .codec_dev
= &soc_codec_device_ak4104
,
276 static struct platform_device
*raumfeld_audio_line_device
;
277 static struct platform_device
*raumfeld_audio_spdif_device
;
279 static int __init
raumfeld_audio_init(void)
283 if (!machine_is_raumfeld_speaker() &&
284 !machine_is_raumfeld_connector())
287 max9486_client
= i2c_new_device(i2c_get_adapter(0),
288 &max9486_hwmon_info
);
293 set_max9485_clk(MAX9485_MCLK_FREQ_122880
);
296 raumfeld_audio_line_device
= platform_device_alloc("soc-audio", 0);
297 if (!raumfeld_audio_line_device
)
300 platform_set_drvdata(raumfeld_audio_line_device
,
301 &raumfeld_line_devdata
);
302 raumfeld_line_devdata
.dev
= &raumfeld_audio_line_device
->dev
;
303 ret
= platform_device_add(raumfeld_audio_line_device
);
305 platform_device_put(raumfeld_audio_line_device
);
307 /* no S/PDIF on Speakers */
308 if (machine_is_raumfeld_speaker())
312 raumfeld_audio_spdif_device
= platform_device_alloc("soc-audio", 1);
313 if (!raumfeld_audio_spdif_device
) {
314 platform_device_put(raumfeld_audio_line_device
);
318 platform_set_drvdata(raumfeld_audio_spdif_device
,
319 &raumfeld_spdif_devdata
);
320 raumfeld_spdif_devdata
.dev
= &raumfeld_audio_spdif_device
->dev
;
321 ret
= platform_device_add(raumfeld_audio_spdif_device
);
323 platform_device_put(raumfeld_audio_line_device
);
324 platform_device_put(raumfeld_audio_spdif_device
);
327 raumfeld_enable_audio(true);
332 static void __exit
raumfeld_audio_exit(void)
334 raumfeld_enable_audio(false);
336 platform_device_unregister(raumfeld_audio_line_device
);
338 if (machine_is_raumfeld_connector())
339 platform_device_unregister(raumfeld_audio_spdif_device
);
341 i2c_unregister_device(max9486_client
);
343 gpio_free(GPIO_MCLK_RESET
);
344 gpio_free(GPIO_CODEC_RESET
);
345 gpio_free(GPIO_SPDIF_RESET
);
348 module_init(raumfeld_audio_init
);
349 module_exit(raumfeld_audio_exit
);
351 /* Module information */
352 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
353 MODULE_DESCRIPTION("Raumfeld audio SoC");
354 MODULE_LICENSE("GPL");