1 /*
2 * neo1973_wm8753.c -- SoC audio for Openmoko Neo1973 and Freerunner devices
3 *
4 * Copyright 2007 Openmoko Inc
5 * Author: Graeme Gregory <graeme@openmoko.org>
6 * Copyright 2007 Wolfson Microelectronics PLC.
7 * Author: Graeme Gregory
8 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
9 * Copyright 2009 Wolfson Microelectronics
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/gpio.h>
20
21 #include <sound/soc.h>
22
23 #include <mach/gpio-samsung.h>
24 #include <asm/mach-types.h>
25 #include "regs-iis.h"
26
27 #include "../codecs/wm8753.h"
28 #include "s3c24xx-i2s.h"
29
neo1973_hifi_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)30 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
31 struct snd_pcm_hw_params *params)
32 {
33 struct snd_soc_pcm_runtime *rtd = substream->private_data;
34 struct snd_soc_dai *codec_dai = rtd->codec_dai;
35 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
36 unsigned int pll_out = 0, bclk = 0;
37 int ret = 0;
38 unsigned long iis_clkrate;
39
40 iis_clkrate = s3c24xx_i2s_get_clockrate();
41
42 switch (params_rate(params)) {
43 case 8000:
44 case 16000:
45 pll_out = 12288000;
46 break;
47 case 48000:
48 bclk = WM8753_BCLK_DIV_4;
49 pll_out = 12288000;
50 break;
51 case 96000:
52 bclk = WM8753_BCLK_DIV_2;
53 pll_out = 12288000;
54 break;
55 case 11025:
56 bclk = WM8753_BCLK_DIV_16;
57 pll_out = 11289600;
58 break;
59 case 22050:
60 bclk = WM8753_BCLK_DIV_8;
61 pll_out = 11289600;
62 break;
63 case 44100:
64 bclk = WM8753_BCLK_DIV_4;
65 pll_out = 11289600;
66 break;
67 case 88200:
68 bclk = WM8753_BCLK_DIV_2;
69 pll_out = 11289600;
70 break;
71 }
72
73 /* set codec DAI configuration */
74 ret = snd_soc_dai_set_fmt(codec_dai,
75 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
76 SND_SOC_DAIFMT_CBM_CFM);
77 if (ret < 0)
78 return ret;
79
80 /* set cpu DAI configuration */
81 ret = snd_soc_dai_set_fmt(cpu_dai,
82 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
83 SND_SOC_DAIFMT_CBM_CFM);
84 if (ret < 0)
85 return ret;
86
87 /* set the codec system clock for DAC and ADC */
88 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
89 SND_SOC_CLOCK_IN);
90 if (ret < 0)
91 return ret;
92
93 /* set MCLK division for sample rate */
94 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
95 S3C2410_IISMOD_32FS);
96 if (ret < 0)
97 return ret;
98
99 /* set codec BCLK division for sample rate */
100 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
101 if (ret < 0)
102 return ret;
103
104 /* set prescaler division for sample rate */
105 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
106 S3C24XX_PRESCALE(4, 4));
107 if (ret < 0)
108 return ret;
109
110 /* codec PLL input is PCLK/4 */
111 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
112 iis_clkrate / 4, pll_out);
113 if (ret < 0)
114 return ret;
115
116 return 0;
117 }
118
neo1973_hifi_hw_free(struct snd_pcm_substream * substream)119 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
120 {
121 struct snd_soc_pcm_runtime *rtd = substream->private_data;
122 struct snd_soc_dai *codec_dai = rtd->codec_dai;
123
124 /* disable the PLL */
125 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
126 }
127
128 /*
129 * Neo1973 WM8753 HiFi DAI opserations.
130 */
131 static struct snd_soc_ops neo1973_hifi_ops = {
132 .hw_params = neo1973_hifi_hw_params,
133 .hw_free = neo1973_hifi_hw_free,
134 };
135
neo1973_voice_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)136 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
137 struct snd_pcm_hw_params *params)
138 {
139 struct snd_soc_pcm_runtime *rtd = substream->private_data;
140 struct snd_soc_dai *codec_dai = rtd->codec_dai;
141 unsigned int pcmdiv = 0;
142 int ret = 0;
143 unsigned long iis_clkrate;
144
145 iis_clkrate = s3c24xx_i2s_get_clockrate();
146
147 if (params_rate(params) != 8000)
148 return -EINVAL;
149 if (params_channels(params) != 1)
150 return -EINVAL;
151
152 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
153
154 /* todo: gg check mode (DSP_B) against CSR datasheet */
155 /* set codec DAI configuration */
156 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
157 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
158 if (ret < 0)
159 return ret;
160
161 /* set the codec system clock for DAC and ADC */
162 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
163 SND_SOC_CLOCK_IN);
164 if (ret < 0)
165 return ret;
166
167 /* set codec PCM division for sample rate */
168 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
169 if (ret < 0)
170 return ret;
171
172 /* configure and enable PLL for 12.288MHz output */
173 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
174 iis_clkrate / 4, 12288000);
175 if (ret < 0)
176 return ret;
177
178 return 0;
179 }
180
neo1973_voice_hw_free(struct snd_pcm_substream * substream)181 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
182 {
183 struct snd_soc_pcm_runtime *rtd = substream->private_data;
184 struct snd_soc_dai *codec_dai = rtd->codec_dai;
185
186 /* disable the PLL */
187 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
188 }
189
190 static struct snd_soc_ops neo1973_voice_ops = {
191 .hw_params = neo1973_voice_hw_params,
192 .hw_free = neo1973_voice_hw_free,
193 };
194
195 static int gta02_speaker_enabled;
196
lm4853_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)197 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
198 struct snd_ctl_elem_value *ucontrol)
199 {
200 gta02_speaker_enabled = ucontrol->value.integer.value[0];
201
202 gpio_set_value(S3C2410_GPJ(2), !gta02_speaker_enabled);
203
204 return 0;
205 }
206
lm4853_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)207 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
208 struct snd_ctl_elem_value *ucontrol)
209 {
210 ucontrol->value.integer.value[0] = gta02_speaker_enabled;
211 return 0;
212 }
213
lm4853_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)214 static int lm4853_event(struct snd_soc_dapm_widget *w,
215 struct snd_kcontrol *k, int event)
216 {
217 gpio_set_value(S3C2410_GPJ(1), SND_SOC_DAPM_EVENT_OFF(event));
218
219 return 0;
220 }
221
222 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
223 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
224 SND_SOC_DAPM_LINE("GSM Line In", NULL),
225 SND_SOC_DAPM_MIC("Headset Mic", NULL),
226 SND_SOC_DAPM_MIC("Handset Mic", NULL),
227 SND_SOC_DAPM_SPK("Handset Spk", NULL),
228 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
229 };
230
231 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
232 /* Connections to the GSM Module */
233 {"GSM Line Out", NULL, "MONO1"},
234 {"GSM Line Out", NULL, "MONO2"},
235 {"RXP", NULL, "GSM Line In"},
236 {"RXN", NULL, "GSM Line In"},
237
238 /* Connections to Headset */
239 {"MIC1", NULL, "Mic Bias"},
240 {"Mic Bias", NULL, "Headset Mic"},
241
242 /* Call Mic */
243 {"MIC2", NULL, "Mic Bias"},
244 {"MIC2N", NULL, "Mic Bias"},
245 {"Mic Bias", NULL, "Handset Mic"},
246
247 /* Connect the ALC pins */
248 {"ACIN", NULL, "ACOP"},
249
250 /* Connections to the amp */
251 {"Stereo Out", NULL, "LOUT1"},
252 {"Stereo Out", NULL, "ROUT1"},
253
254 /* Call Speaker */
255 {"Handset Spk", NULL, "LOUT2"},
256 {"Handset Spk", NULL, "ROUT2"},
257 };
258
259 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
260 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
261 SOC_DAPM_PIN_SWITCH("GSM Line In"),
262 SOC_DAPM_PIN_SWITCH("Headset Mic"),
263 SOC_DAPM_PIN_SWITCH("Handset Mic"),
264 SOC_DAPM_PIN_SWITCH("Handset Spk"),
265 SOC_DAPM_PIN_SWITCH("Stereo Out"),
266
267 SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
268 lm4853_get_spk,
269 lm4853_set_spk),
270 };
271
neo1973_wm8753_init(struct snd_soc_pcm_runtime * rtd)272 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
273 {
274 struct snd_soc_card *card = rtd->card;
275
276 /* set endpoints to default off mode */
277 snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
278 snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
279 snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
280 snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
281 snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
282 snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
283
284 /* allow audio paths from the GSM modem to run during suspend */
285 snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
286 snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
287 snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
288 snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
289 snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
290 snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
291
292 return 0;
293 }
294
295 static struct snd_soc_dai_link neo1973_dai[] = {
296 { /* Hifi Playback - for similatious use with voice below */
297 .name = "WM8753",
298 .stream_name = "WM8753 HiFi",
299 .platform_name = "s3c24xx-iis",
300 .cpu_dai_name = "s3c24xx-iis",
301 .codec_dai_name = "wm8753-hifi",
302 .codec_name = "wm8753.0-001a",
303 .init = neo1973_wm8753_init,
304 .ops = &neo1973_hifi_ops,
305 },
306 { /* Voice via BT */
307 .name = "Bluetooth",
308 .stream_name = "Voice",
309 .cpu_dai_name = "bt-sco-pcm",
310 .codec_dai_name = "wm8753-voice",
311 .codec_name = "wm8753.0-001a",
312 .ops = &neo1973_voice_ops,
313 },
314 };
315
316 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
317 {
318 .name = "dfbmcs320",
319 .codec_name = "dfbmcs320.0",
320 },
321 };
322
323 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
324 {
325 .dev_name = "lm4857.0-007c",
326 .name_prefix = "Amp",
327 },
328 };
329
330 static const struct gpio neo1973_gta02_gpios[] = {
331 { S3C2410_GPJ(2), GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
332 { S3C2410_GPJ(1), GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
333 };
334
335 static struct snd_soc_card neo1973 = {
336 .name = "neo1973",
337 .owner = THIS_MODULE,
338 .dai_link = neo1973_dai,
339 .num_links = ARRAY_SIZE(neo1973_dai),
340 .aux_dev = neo1973_aux_devs,
341 .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
342 .codec_conf = neo1973_codec_conf,
343 .num_configs = ARRAY_SIZE(neo1973_codec_conf),
344
345 .controls = neo1973_wm8753_controls,
346 .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
347 .dapm_widgets = neo1973_wm8753_dapm_widgets,
348 .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
349 .dapm_routes = neo1973_wm8753_routes,
350 .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
351 .fully_routed = true,
352 };
353
354 static struct platform_device *neo1973_snd_device;
355
neo1973_init(void)356 static int __init neo1973_init(void)
357 {
358 int ret;
359
360 if (!machine_is_neo1973_gta02())
361 return -ENODEV;
362
363 if (machine_is_neo1973_gta02()) {
364 neo1973.name = "neo1973gta02";
365 neo1973.num_aux_devs = 1;
366
367 ret = gpio_request_array(neo1973_gta02_gpios,
368 ARRAY_SIZE(neo1973_gta02_gpios));
369 if (ret)
370 return ret;
371 }
372
373 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
374 if (!neo1973_snd_device) {
375 ret = -ENOMEM;
376 goto err_gpio_free;
377 }
378
379 platform_set_drvdata(neo1973_snd_device, &neo1973);
380 ret = platform_device_add(neo1973_snd_device);
381
382 if (ret)
383 goto err_put_device;
384
385 return 0;
386
387 err_put_device:
388 platform_device_put(neo1973_snd_device);
389 err_gpio_free:
390 if (machine_is_neo1973_gta02()) {
391 gpio_free_array(neo1973_gta02_gpios,
392 ARRAY_SIZE(neo1973_gta02_gpios));
393 }
394 return ret;
395 }
396 module_init(neo1973_init);
397
neo1973_exit(void)398 static void __exit neo1973_exit(void)
399 {
400 platform_device_unregister(neo1973_snd_device);
401
402 if (machine_is_neo1973_gta02()) {
403 gpio_free_array(neo1973_gta02_gpios,
404 ARRAY_SIZE(neo1973_gta02_gpios));
405 }
406 }
407 module_exit(neo1973_exit);
408
409 /* Module information */
410 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
411 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
412 MODULE_LICENSE("GPL");
413