Commit | Line | Data |
---|---|---|
49af574b DM |
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 | ||
49af574b DM |
29 | #include "pxa-ssp.h" |
30 | ||
31 | #define GPIO_SPDIF_RESET (38) | |
32 | #define GPIO_MCLK_RESET (111) | |
33 | #define GPIO_CODEC_RESET (120) | |
34 | ||
35 | static struct i2c_client *max9486_client; | |
36 | static struct i2c_board_info max9486_hwmon_info = { | |
37 | I2C_BOARD_INFO("max9485", 0x63), | |
38 | }; | |
39 | ||
40 | #define MAX9485_MCLK_FREQ_112896 0x22 | |
a4212968 DM |
41 | #define MAX9485_MCLK_FREQ_122880 0x23 |
42 | #define MAX9485_MCLK_FREQ_225792 0x32 | |
43 | #define MAX9485_MCLK_FREQ_245760 0x33 | |
49af574b DM |
44 | |
45 | static void set_max9485_clk(char clk) | |
46 | { | |
47 | i2c_master_send(max9486_client, &clk, 1); | |
48 | } | |
49 | ||
50 | static void raumfeld_enable_audio(bool en) | |
51 | { | |
52 | if (en) { | |
53 | gpio_set_value(GPIO_MCLK_RESET, 1); | |
54 | ||
55 | /* wait some time to let the clocks become stable */ | |
56 | msleep(100); | |
57 | ||
58 | gpio_set_value(GPIO_SPDIF_RESET, 1); | |
59 | gpio_set_value(GPIO_CODEC_RESET, 1); | |
60 | } else { | |
61 | gpio_set_value(GPIO_MCLK_RESET, 0); | |
62 | gpio_set_value(GPIO_SPDIF_RESET, 0); | |
63 | gpio_set_value(GPIO_CODEC_RESET, 0); | |
64 | } | |
65 | } | |
66 | ||
67 | /* CS4270 */ | |
68 | static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream) | |
69 | { | |
70 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 71 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
49af574b | 72 | |
a4212968 DM |
73 | /* set freq to 0 to enable all possible codec sample rates */ |
74 | return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0); | |
75 | } | |
49af574b | 76 | |
a4212968 DM |
77 | static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream) |
78 | { | |
79 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 80 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
a4212968 DM |
81 | |
82 | /* set freq to 0 to enable all possible codec sample rates */ | |
83 | snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0); | |
49af574b DM |
84 | } |
85 | ||
86 | static int raumfeld_cs4270_hw_params(struct snd_pcm_substream *substream, | |
87 | struct snd_pcm_hw_params *params) | |
88 | { | |
89 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
90 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
91 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
49af574b DM |
92 | unsigned int fmt, clk = 0; |
93 | int ret = 0; | |
94 | ||
95 | switch (params_rate(params)) { | |
a4212968 DM |
96 | case 44100: |
97 | set_max9485_clk(MAX9485_MCLK_FREQ_112896); | |
98 | clk = 11289600; | |
99 | break; | |
49af574b | 100 | case 48000: |
49af574b DM |
101 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); |
102 | clk = 12288000; | |
103 | break; | |
49af574b | 104 | case 88200: |
a4212968 DM |
105 | set_max9485_clk(MAX9485_MCLK_FREQ_225792); |
106 | clk = 22579200; | |
49af574b | 107 | break; |
a4212968 DM |
108 | case 96000: |
109 | set_max9485_clk(MAX9485_MCLK_FREQ_245760); | |
110 | clk = 24576000; | |
111 | break; | |
112 | default: | |
113 | return -EINVAL; | |
49af574b DM |
114 | } |
115 | ||
116 | fmt = SND_SOC_DAIFMT_I2S | | |
117 | SND_SOC_DAIFMT_NB_NF | | |
118 | SND_SOC_DAIFMT_CBS_CFS; | |
119 | ||
120 | /* setup the CODEC DAI */ | |
121 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); | |
122 | if (ret < 0) | |
123 | return ret; | |
124 | ||
125 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0); | |
126 | if (ret < 0) | |
127 | return ret; | |
128 | ||
129 | /* setup the CPU DAI */ | |
a649d1fc | 130 | ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk); |
49af574b DM |
131 | if (ret < 0) |
132 | return ret; | |
133 | ||
134 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4); | |
139 | if (ret < 0) | |
140 | return ret; | |
141 | ||
a4212968 | 142 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1); |
49af574b DM |
143 | if (ret < 0) |
144 | return ret; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static struct snd_soc_ops raumfeld_cs4270_ops = { | |
150 | .startup = raumfeld_cs4270_startup, | |
a4212968 | 151 | .shutdown = raumfeld_cs4270_shutdown, |
49af574b DM |
152 | .hw_params = raumfeld_cs4270_hw_params, |
153 | }; | |
154 | ||
155 | static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state) | |
156 | { | |
157 | raumfeld_enable_audio(false); | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static int raumfeld_line_resume(struct platform_device *pdev) | |
162 | { | |
163 | raumfeld_enable_audio(true); | |
164 | return 0; | |
165 | } | |
166 | ||
49af574b DM |
167 | /* AK4104 */ |
168 | ||
169 | static int raumfeld_ak4104_hw_params(struct snd_pcm_substream *substream, | |
170 | struct snd_pcm_hw_params *params) | |
171 | { | |
172 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
173 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
174 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
49af574b DM |
175 | int fmt, ret = 0, clk = 0; |
176 | ||
177 | switch (params_rate(params)) { | |
a4212968 DM |
178 | case 44100: |
179 | set_max9485_clk(MAX9485_MCLK_FREQ_112896); | |
180 | clk = 11289600; | |
181 | break; | |
49af574b | 182 | case 48000: |
49af574b DM |
183 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); |
184 | clk = 12288000; | |
185 | break; | |
49af574b | 186 | case 88200: |
a4212968 DM |
187 | set_max9485_clk(MAX9485_MCLK_FREQ_225792); |
188 | clk = 22579200; | |
189 | break; | |
190 | case 96000: | |
191 | set_max9485_clk(MAX9485_MCLK_FREQ_245760); | |
192 | clk = 24576000; | |
49af574b | 193 | break; |
a4212968 DM |
194 | default: |
195 | return -EINVAL; | |
49af574b DM |
196 | } |
197 | ||
198 | fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF; | |
199 | ||
200 | /* setup the CODEC DAI */ | |
201 | ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS); | |
202 | if (ret < 0) | |
203 | return ret; | |
204 | ||
205 | /* setup the CPU DAI */ | |
a649d1fc | 206 | ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk); |
49af574b DM |
207 | if (ret < 0) |
208 | return ret; | |
209 | ||
210 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS); | |
211 | if (ret < 0) | |
212 | return ret; | |
213 | ||
214 | ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4); | |
215 | if (ret < 0) | |
216 | return ret; | |
217 | ||
a4212968 | 218 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1); |
49af574b DM |
219 | if (ret < 0) |
220 | return ret; | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | static struct snd_soc_ops raumfeld_ak4104_ops = { | |
226 | .hw_params = raumfeld_ak4104_hw_params, | |
227 | }; | |
228 | ||
f0fba2ad LG |
229 | static struct snd_soc_dai_link raumfeld_dai[] = { |
230 | { | |
49af574b DM |
231 | .name = "ak4104", |
232 | .stream_name = "Playback", | |
f0fba2ad LG |
233 | .cpu_dai_name = "pxa-ssp-dai.1", |
234 | .codec_dai_name = "ak4104-hifi", | |
235 | .platform_name = "pxa-pcm-audio", | |
49af574b | 236 | .ops = &raumfeld_ak4104_ops, |
f0fba2ad LG |
237 | .codec_name = "ak4104-codec.0", |
238 | }, | |
239 | { | |
240 | .name = "CS4270", | |
241 | .stream_name = "CS4270", | |
242 | .cpu_dai_name = "pxa-ssp-dai.0", | |
243 | .platform_name = "pxa-pcm-audio", | |
244 | .codec_dai_name = "cs4270-hifi", | |
245 | .codec_name = "cs4270-codec.0-0048", | |
246 | .ops = &raumfeld_cs4270_ops, | |
247 | },}; | |
49af574b | 248 | |
f0fba2ad LG |
249 | static struct snd_soc_card snd_soc_raumfeld = { |
250 | .name = "Raumfeld", | |
251 | .dai_link = raumfeld_dai, | |
252 | .suspend_post = raumfeld_line_suspend, | |
253 | .resume_pre = raumfeld_line_resume, | |
254 | .num_links = ARRAY_SIZE(raumfeld_dai), | |
49af574b DM |
255 | }; |
256 | ||
f0fba2ad | 257 | static struct platform_device *raumfeld_audio_device; |
49af574b DM |
258 | |
259 | static int __init raumfeld_audio_init(void) | |
260 | { | |
261 | int ret; | |
262 | ||
263 | if (!machine_is_raumfeld_speaker() && | |
264 | !machine_is_raumfeld_connector()) | |
265 | return 0; | |
266 | ||
267 | max9486_client = i2c_new_device(i2c_get_adapter(0), | |
268 | &max9486_hwmon_info); | |
269 | ||
270 | if (!max9486_client) | |
271 | return -ENOMEM; | |
272 | ||
273 | set_max9485_clk(MAX9485_MCLK_FREQ_122880); | |
274 | ||
f0fba2ad LG |
275 | /* Register LINE and SPDIF */ |
276 | raumfeld_audio_device = platform_device_alloc("soc-audio", 0); | |
277 | if (!raumfeld_audio_device) | |
49af574b DM |
278 | return -ENOMEM; |
279 | ||
f0fba2ad LG |
280 | platform_set_drvdata(raumfeld_audio_device, |
281 | &snd_soc_raumfeld); | |
282 | ret = platform_device_add(raumfeld_audio_device); | |
49af574b DM |
283 | |
284 | /* no S/PDIF on Speakers */ | |
285 | if (machine_is_raumfeld_speaker()) | |
286 | return ret; | |
287 | ||
49af574b DM |
288 | raumfeld_enable_audio(true); |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | static void __exit raumfeld_audio_exit(void) | |
294 | { | |
295 | raumfeld_enable_audio(false); | |
296 | ||
f0fba2ad | 297 | platform_device_unregister(raumfeld_audio_device); |
49af574b DM |
298 | |
299 | i2c_unregister_device(max9486_client); | |
300 | ||
301 | gpio_free(GPIO_MCLK_RESET); | |
302 | gpio_free(GPIO_CODEC_RESET); | |
303 | gpio_free(GPIO_SPDIF_RESET); | |
304 | } | |
305 | ||
306 | module_init(raumfeld_audio_init); | |
307 | module_exit(raumfeld_audio_exit); | |
308 | ||
309 | /* Module information */ | |
310 | MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); | |
311 | MODULE_DESCRIPTION("Raumfeld audio SoC"); | |
312 | MODULE_LICENSE("GPL"); |