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1 | /* |
2 | * raumfeld_audio.c -- SoC audio for Raumfeld audio devices | |
3 | * | |
4 | * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> | |
5 | * | |
6 | * based on code from: | |
7 | * | |
8 | * Wolfson Microelectronics PLC. | |
9 | * Openedhand Ltd. | |
10 | * Liam Girdwood <lrg@slimlogic.co.uk> | |
11 | * Richard Purdie <richard@openedhand.com> | |
12 | * | |
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. | |
17 | */ | |
18 | ||
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> | |
26 | ||
27 | #include <asm/mach-types.h> | |
28 | ||
29 | #include "../codecs/cs4270.h" | |
30 | #include "../codecs/ak4104.h" | |
31 | #include "pxa2xx-pcm.h" | |
32 | #include "pxa-ssp.h" | |
33 | ||
34 | #define GPIO_SPDIF_RESET (38) | |
35 | #define GPIO_MCLK_RESET (111) | |
36 | #define GPIO_CODEC_RESET (120) | |
37 | ||
38 | static struct i2c_client *max9486_client; | |
39 | static struct i2c_board_info max9486_hwmon_info = { | |
40 | I2C_BOARD_INFO("max9485", 0x63), | |
41 | }; | |
42 | ||
43 | #define MAX9485_MCLK_FREQ_112896 0x22 | |
44 | #define MAX9485_MCLK_FREQ_122880 0x23 | |
45 | ||
46 | static void set_max9485_clk(char clk) | |
47 | { | |
48 | i2c_master_send(max9486_client, &clk, 1); | |
49 | } | |
50 | ||
51 | static void raumfeld_enable_audio(bool en) | |
52 | { | |
53 | if (en) { | |
54 | gpio_set_value(GPIO_MCLK_RESET, 1); | |
55 | ||
56 | /* wait some time to let the clocks become stable */ | |
57 | msleep(100); | |
58 | ||
59 | gpio_set_value(GPIO_SPDIF_RESET, 1); | |
60 | gpio_set_value(GPIO_CODEC_RESET, 1); | |
61 | } else { | |
62 | gpio_set_value(GPIO_MCLK_RESET, 0); | |
63 | gpio_set_value(GPIO_SPDIF_RESET, 0); | |
64 | gpio_set_value(GPIO_CODEC_RESET, 0); | |
65 | } | |
66 | } | |
67 | ||
68 | /* CS4270 */ | |
69 | static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream) | |
70 | { | |
71 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
72 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
73 | ||
74 | set_max9485_clk(MAX9485_MCLK_FREQ_112896); | |
75 | ||
76 | return snd_soc_dai_set_sysclk(codec_dai, 0, 11289600, 0); | |
77 | } | |
78 | ||
79 | static int raumfeld_cs4270_hw_params(struct snd_pcm_substream *substream, | |
80 | struct snd_pcm_hw_params *params) | |
81 | { | |
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; | |
86 | int ret = 0; | |
87 | ||
88 | switch (params_rate(params)) { | |
89 | case 8000: | |
90 | case 16000: | |
91 | case 48000: | |
92 | case 96000: | |
93 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); | |
94 | clk = 12288000; | |
95 | break; | |
96 | case 11025: | |
97 | case 22050: | |
98 | case 44100: | |
99 | case 88200: | |
100 | set_max9485_clk(MAX9485_MCLK_FREQ_112896); | |
101 | clk = 11289600; | |
102 | break; | |
103 | } | |
104 | ||
105 | fmt = SND_SOC_DAIFMT_I2S | | |
106 | SND_SOC_DAIFMT_NB_NF | | |
107 | SND_SOC_DAIFMT_CBS_CFS; | |
108 | ||
109 | /* setup the CODEC DAI */ | |
110 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); | |
111 | if (ret < 0) | |
112 | return ret; | |
113 | ||
114 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0); | |
115 | if (ret < 0) | |
116 | return ret; | |
117 | ||
118 | /* setup the CPU DAI */ | |
a649d1fc | 119 | ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk); |
49af574b DM |
120 | if (ret < 0) |
121 | return ret; | |
122 | ||
123 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | |
124 | if (ret < 0) | |
125 | return ret; | |
126 | ||
127 | ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4); | |
128 | if (ret < 0) | |
129 | return ret; | |
130 | ||
131 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1); | |
132 | if (ret < 0) | |
133 | return ret; | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static struct snd_soc_ops raumfeld_cs4270_ops = { | |
139 | .startup = raumfeld_cs4270_startup, | |
140 | .hw_params = raumfeld_cs4270_hw_params, | |
141 | }; | |
142 | ||
143 | static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state) | |
144 | { | |
145 | raumfeld_enable_audio(false); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static int raumfeld_line_resume(struct platform_device *pdev) | |
150 | { | |
151 | raumfeld_enable_audio(true); | |
152 | return 0; | |
153 | } | |
154 | ||
155 | static struct snd_soc_dai_link raumfeld_line_dai = { | |
156 | .name = "CS4270", | |
157 | .stream_name = "CS4270", | |
158 | .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1], | |
159 | .codec_dai = &cs4270_dai, | |
160 | .ops = &raumfeld_cs4270_ops, | |
161 | }; | |
162 | ||
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, | |
169 | .num_links = 1, | |
170 | }; | |
171 | ||
172 | ||
173 | /* AK4104 */ | |
174 | ||
175 | static int raumfeld_ak4104_hw_params(struct snd_pcm_substream *substream, | |
176 | struct snd_pcm_hw_params *params) | |
177 | { | |
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; | |
182 | ||
183 | switch (params_rate(params)) { | |
184 | case 8000: | |
185 | case 16000: | |
186 | case 48000: | |
187 | case 96000: | |
188 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); | |
189 | clk = 12288000; | |
190 | break; | |
191 | case 11025: | |
192 | case 22050: | |
193 | case 44100: | |
194 | case 88200: | |
195 | set_max9485_clk(MAX9485_MCLK_FREQ_112896); | |
196 | clk = 11289600; | |
197 | break; | |
198 | } | |
199 | ||
200 | fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF; | |
201 | ||
202 | /* setup the CODEC DAI */ | |
203 | ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS); | |
204 | if (ret < 0) | |
205 | return ret; | |
206 | ||
207 | /* setup the CPU DAI */ | |
a649d1fc | 208 | ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk); |
49af574b DM |
209 | if (ret < 0) |
210 | return ret; | |
211 | ||
212 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS); | |
213 | if (ret < 0) | |
214 | return ret; | |
215 | ||
216 | ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4); | |
217 | if (ret < 0) | |
218 | return ret; | |
219 | ||
220 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1); | |
221 | if (ret < 0) | |
222 | return ret; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static struct snd_soc_ops raumfeld_ak4104_ops = { | |
228 | .hw_params = raumfeld_ak4104_hw_params, | |
229 | }; | |
230 | ||
231 | static struct snd_soc_dai_link raumfeld_spdif_dai = { | |
232 | .name = "ak4104", | |
233 | .stream_name = "Playback", | |
234 | .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP2], | |
235 | .codec_dai = &ak4104_dai, | |
236 | .ops = &raumfeld_ak4104_ops, | |
237 | }; | |
238 | ||
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, | |
243 | .num_links = 1 | |
244 | }; | |
245 | ||
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, | |
250 | }; | |
251 | ||
252 | static struct snd_soc_device raumfeld_spdif_devdata = { | |
253 | .card = &snd_soc_spdif_raumfeld, | |
254 | .codec_dev = &soc_codec_device_ak4104, | |
255 | }; | |
256 | ||
257 | static struct platform_device *raumfeld_audio_line_device; | |
258 | static struct platform_device *raumfeld_audio_spdif_device; | |
259 | ||
260 | static int __init raumfeld_audio_init(void) | |
261 | { | |
262 | int ret; | |
263 | ||
264 | if (!machine_is_raumfeld_speaker() && | |
265 | !machine_is_raumfeld_connector()) | |
266 | return 0; | |
267 | ||
268 | max9486_client = i2c_new_device(i2c_get_adapter(0), | |
269 | &max9486_hwmon_info); | |
270 | ||
271 | if (!max9486_client) | |
272 | return -ENOMEM; | |
273 | ||
274 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); | |
275 | ||
276 | /* LINE */ | |
277 | raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0); | |
278 | if (!raumfeld_audio_line_device) | |
279 | return -ENOMEM; | |
280 | ||
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); | |
285 | if (ret) | |
286 | platform_device_put(raumfeld_audio_line_device); | |
287 | ||
288 | /* no S/PDIF on Speakers */ | |
289 | if (machine_is_raumfeld_speaker()) | |
290 | return ret; | |
291 | ||
292 | /* S/PDIF */ | |
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); | |
296 | return -ENOMEM; | |
297 | } | |
298 | ||
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); | |
303 | if (ret) { | |
304 | platform_device_put(raumfeld_audio_line_device); | |
305 | platform_device_put(raumfeld_audio_spdif_device); | |
306 | } | |
307 | ||
308 | raumfeld_enable_audio(true); | |
309 | ||
310 | return ret; | |
311 | } | |
312 | ||
313 | static void __exit raumfeld_audio_exit(void) | |
314 | { | |
315 | raumfeld_enable_audio(false); | |
316 | ||
317 | platform_device_unregister(raumfeld_audio_line_device); | |
318 | ||
319 | if (machine_is_raumfeld_connector()) | |
320 | platform_device_unregister(raumfeld_audio_spdif_device); | |
321 | ||
322 | i2c_unregister_device(max9486_client); | |
323 | ||
324 | gpio_free(GPIO_MCLK_RESET); | |
325 | gpio_free(GPIO_CODEC_RESET); | |
326 | gpio_free(GPIO_SPDIF_RESET); | |
327 | } | |
328 | ||
329 | module_init(raumfeld_audio_init); | |
330 | module_exit(raumfeld_audio_exit); | |
331 | ||
332 | /* Module information */ | |
333 | MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); | |
334 | MODULE_DESCRIPTION("Raumfeld audio SoC"); | |
335 | MODULE_LICENSE("GPL"); |