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 <asm/mach-types.h>
24 #include <plat/regs-iis.h>
25 #include <mach/gta02.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 /* Shared routes and controls */
196
197 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
198 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
199 SND_SOC_DAPM_LINE("GSM Line In", NULL),
200 SND_SOC_DAPM_MIC("Headset Mic", NULL),
201 SND_SOC_DAPM_MIC("Handset Mic", NULL),
202 };
203
204 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
205 /* Connections to the GSM Module */
206 {"GSM Line Out", NULL, "MONO1"},
207 {"GSM Line Out", NULL, "MONO2"},
208 {"RXP", NULL, "GSM Line In"},
209 {"RXN", NULL, "GSM Line In"},
210
211 /* Connections to Headset */
212 {"MIC1", NULL, "Mic Bias"},
213 {"Mic Bias", NULL, "Headset Mic"},
214
215 /* Call Mic */
216 {"MIC2", NULL, "Mic Bias"},
217 {"MIC2N", NULL, "Mic Bias"},
218 {"Mic Bias", NULL, "Handset Mic"},
219
220 /* Connect the ALC pins */
221 {"ACIN", NULL, "ACOP"},
222 };
223
224 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
225 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
226 SOC_DAPM_PIN_SWITCH("GSM Line In"),
227 SOC_DAPM_PIN_SWITCH("Headset Mic"),
228 SOC_DAPM_PIN_SWITCH("Handset Mic"),
229 };
230
231 /* GTA02 specific routes and controls */
232
233 static int gta02_speaker_enabled;
234
lm4853_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)235 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
236 struct snd_ctl_elem_value *ucontrol)
237 {
238 gta02_speaker_enabled = ucontrol->value.integer.value[0];
239
240 gpio_set_value(GTA02_GPIO_HP_IN, !gta02_speaker_enabled);
241
242 return 0;
243 }
244
lm4853_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)245 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
246 struct snd_ctl_elem_value *ucontrol)
247 {
248 ucontrol->value.integer.value[0] = gta02_speaker_enabled;
249 return 0;
250 }
251
lm4853_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)252 static int lm4853_event(struct snd_soc_dapm_widget *w,
253 struct snd_kcontrol *k, int event)
254 {
255 gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event));
256
257 return 0;
258 }
259
260 static const struct snd_soc_dapm_route neo1973_gta02_routes[] = {
261 /* Connections to the amp */
262 {"Stereo Out", NULL, "LOUT1"},
263 {"Stereo Out", NULL, "ROUT1"},
264
265 /* Call Speaker */
266 {"Handset Spk", NULL, "LOUT2"},
267 {"Handset Spk", NULL, "ROUT2"},
268 };
269
270 static const struct snd_kcontrol_new neo1973_gta02_wm8753_controls[] = {
271 SOC_DAPM_PIN_SWITCH("Handset Spk"),
272 SOC_DAPM_PIN_SWITCH("Stereo Out"),
273
274 SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
275 lm4853_get_spk,
276 lm4853_set_spk),
277 };
278
279 static const struct snd_soc_dapm_widget neo1973_gta02_wm8753_dapm_widgets[] = {
280 SND_SOC_DAPM_SPK("Handset Spk", NULL),
281 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
282 };
283
neo1973_gta02_wm8753_init(struct snd_soc_codec * codec)284 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
285 {
286 struct snd_soc_dapm_context *dapm = &codec->dapm;
287 int ret;
288
289 ret = snd_soc_dapm_new_controls(dapm, neo1973_gta02_wm8753_dapm_widgets,
290 ARRAY_SIZE(neo1973_gta02_wm8753_dapm_widgets));
291 if (ret)
292 return ret;
293
294 ret = snd_soc_dapm_add_routes(dapm, neo1973_gta02_routes,
295 ARRAY_SIZE(neo1973_gta02_routes));
296 if (ret)
297 return ret;
298
299 ret = snd_soc_add_controls(codec, neo1973_gta02_wm8753_controls,
300 ARRAY_SIZE(neo1973_gta02_wm8753_controls));
301 if (ret)
302 return ret;
303
304 snd_soc_dapm_disable_pin(dapm, "Stereo Out");
305 snd_soc_dapm_disable_pin(dapm, "Handset Spk");
306 snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
307 snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
308
309 return 0;
310 }
311
neo1973_wm8753_init(struct snd_soc_pcm_runtime * rtd)312 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
313 {
314 struct snd_soc_codec *codec = rtd->codec;
315 struct snd_soc_dapm_context *dapm = &codec->dapm;
316 int ret;
317
318 /* set up NC codec pins */
319 snd_soc_dapm_nc_pin(dapm, "OUT3");
320 snd_soc_dapm_nc_pin(dapm, "OUT4");
321 snd_soc_dapm_nc_pin(dapm, "LINE1");
322 snd_soc_dapm_nc_pin(dapm, "LINE2");
323
324 /* Add neo1973 specific widgets */
325 ret = snd_soc_dapm_new_controls(dapm, neo1973_wm8753_dapm_widgets,
326 ARRAY_SIZE(neo1973_wm8753_dapm_widgets));
327 if (ret)
328 return ret;
329
330 /* add neo1973 specific controls */
331 ret = snd_soc_add_controls(codec, neo1973_wm8753_controls,
332 ARRAY_SIZE(neo1973_wm8753_controls));
333 if (ret)
334 return ret;
335
336 /* set up neo1973 specific audio routes */
337 ret = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
338 ARRAY_SIZE(neo1973_wm8753_routes));
339 if (ret)
340 return ret;
341
342 /* set endpoints to default off mode */
343 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
344 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
345 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
346 snd_soc_dapm_disable_pin(dapm, "Handset Mic");
347
348 /* allow audio paths from the GSM modem to run during suspend */
349 snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out");
350 snd_soc_dapm_ignore_suspend(dapm, "GSM Line In");
351 snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
352 snd_soc_dapm_ignore_suspend(dapm, "Handset Mic");
353
354 if (machine_is_neo1973_gta02()) {
355 ret = neo1973_gta02_wm8753_init(codec);
356 if (ret)
357 return ret;
358 }
359
360 return 0;
361 }
362
363 static struct snd_soc_dai_link neo1973_dai[] = {
364 { /* Hifi Playback - for similatious use with voice below */
365 .name = "WM8753",
366 .stream_name = "WM8753 HiFi",
367 .platform_name = "samsung-audio",
368 .cpu_dai_name = "s3c24xx-iis",
369 .codec_dai_name = "wm8753-hifi",
370 .codec_name = "wm8753.0-001a",
371 .init = neo1973_wm8753_init,
372 .ops = &neo1973_hifi_ops,
373 },
374 { /* Voice via BT */
375 .name = "Bluetooth",
376 .stream_name = "Voice",
377 .cpu_dai_name = "dfbmcs320-pcm",
378 .codec_dai_name = "wm8753-voice",
379 .codec_name = "wm8753.0-001a",
380 .ops = &neo1973_voice_ops,
381 },
382 };
383
384 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
385 {
386 .name = "dfbmcs320",
387 .codec_name = "dfbmcs320.0",
388 },
389 };
390
391 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
392 {
393 .dev_name = "lm4857.0-007c",
394 .name_prefix = "Amp",
395 },
396 };
397
398 static const struct gpio neo1973_gta02_gpios[] = {
399 { GTA02_GPIO_HP_IN, GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
400 { GTA02_GPIO_AMP_SHUT, GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
401 };
402
403 static struct snd_soc_card neo1973 = {
404 .name = "neo1973",
405 .owner = THIS_MODULE,
406 .dai_link = neo1973_dai,
407 .num_links = ARRAY_SIZE(neo1973_dai),
408 .aux_dev = neo1973_aux_devs,
409 .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
410 .codec_conf = neo1973_codec_conf,
411 .num_configs = ARRAY_SIZE(neo1973_codec_conf),
412 };
413
414 static struct platform_device *neo1973_snd_device;
415
neo1973_init(void)416 static int __init neo1973_init(void)
417 {
418 int ret;
419
420 if (!machine_is_neo1973_gta02())
421 return -ENODEV;
422
423 if (machine_is_neo1973_gta02()) {
424 neo1973.name = "neo1973gta02";
425 neo1973.num_aux_devs = 1;
426
427 ret = gpio_request_array(neo1973_gta02_gpios,
428 ARRAY_SIZE(neo1973_gta02_gpios));
429 if (ret)
430 return ret;
431 }
432
433 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
434 if (!neo1973_snd_device) {
435 ret = -ENOMEM;
436 goto err_gpio_free;
437 }
438
439 platform_set_drvdata(neo1973_snd_device, &neo1973);
440 ret = platform_device_add(neo1973_snd_device);
441
442 if (ret)
443 goto err_put_device;
444
445 return 0;
446
447 err_put_device:
448 platform_device_put(neo1973_snd_device);
449 err_gpio_free:
450 if (machine_is_neo1973_gta02()) {
451 gpio_free_array(neo1973_gta02_gpios,
452 ARRAY_SIZE(neo1973_gta02_gpios));
453 }
454 return ret;
455 }
456 module_init(neo1973_init);
457
neo1973_exit(void)458 static void __exit neo1973_exit(void)
459 {
460 platform_device_unregister(neo1973_snd_device);
461
462 if (machine_is_neo1973_gta02()) {
463 gpio_free_array(neo1973_gta02_gpios,
464 ARRAY_SIZE(neo1973_gta02_gpios));
465 }
466 }
467 module_exit(neo1973_exit);
468
469 /* Module information */
470 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
471 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
472 MODULE_LICENSE("GPL");
473