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606689e9 | 1 | /* |
82c4362e | 2 | * neo1973_gta02_wm8753.c -- SoC audio for Openmoko Freerunner(GTA02) |
606689e9 MB |
3 | * |
4 | * Copyright 2007 Openmoko Inc | |
5 | * Author: Graeme Gregory <graeme@openmoko.org> | |
6 | * Copyright 2007 Wolfson Microelectronics PLC. | |
7 | * Author: Graeme Gregory <linux@wolfsonmicro.com> | |
8 | * Copyright 2009 Wolfson Microelectronics | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/timer.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/platform_device.h> | |
82c4362e | 21 | #include <linux/gpio.h> |
606689e9 MB |
22 | #include <sound/core.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 <plat/regs-iis.h> | |
30 | ||
31 | #include <mach/regs-clock.h> | |
606689e9 | 32 | #include <asm/io.h> |
606689e9 MB |
33 | #include <mach/gta02.h> |
34 | #include "../codecs/wm8753.h" | |
35 | #include "s3c24xx-pcm.h" | |
36 | #include "s3c24xx-i2s.h" | |
37 | ||
38 | static struct snd_soc_card neo1973_gta02; | |
39 | ||
40 | static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream, | |
41 | struct snd_pcm_hw_params *params) | |
42 | { | |
43 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
44 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
45 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
46 | unsigned int pll_out = 0, bclk = 0; | |
47 | int ret = 0; | |
48 | unsigned long iis_clkrate; | |
49 | ||
50 | iis_clkrate = s3c24xx_i2s_get_clockrate(); | |
51 | ||
52 | switch (params_rate(params)) { | |
53 | case 8000: | |
54 | case 16000: | |
55 | pll_out = 12288000; | |
56 | break; | |
57 | case 48000: | |
58 | bclk = WM8753_BCLK_DIV_4; | |
59 | pll_out = 12288000; | |
60 | break; | |
61 | case 96000: | |
62 | bclk = WM8753_BCLK_DIV_2; | |
63 | pll_out = 12288000; | |
64 | break; | |
65 | case 11025: | |
66 | bclk = WM8753_BCLK_DIV_16; | |
67 | pll_out = 11289600; | |
68 | break; | |
69 | case 22050: | |
70 | bclk = WM8753_BCLK_DIV_8; | |
71 | pll_out = 11289600; | |
72 | break; | |
73 | case 44100: | |
74 | bclk = WM8753_BCLK_DIV_4; | |
75 | pll_out = 11289600; | |
76 | break; | |
77 | case 88200: | |
78 | bclk = WM8753_BCLK_DIV_2; | |
79 | pll_out = 11289600; | |
80 | break; | |
81 | } | |
82 | ||
83 | /* set codec DAI configuration */ | |
84 | ret = snd_soc_dai_set_fmt(codec_dai, | |
85 | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
86 | SND_SOC_DAIFMT_CBM_CFM); | |
87 | if (ret < 0) | |
88 | return ret; | |
89 | ||
90 | /* set cpu DAI configuration */ | |
91 | ret = snd_soc_dai_set_fmt(cpu_dai, | |
92 | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
93 | SND_SOC_DAIFMT_CBM_CFM); | |
94 | if (ret < 0) | |
95 | return ret; | |
96 | ||
97 | /* set the codec system clock for DAC and ADC */ | |
98 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out, | |
99 | SND_SOC_CLOCK_IN); | |
100 | if (ret < 0) | |
101 | return ret; | |
102 | ||
103 | /* set MCLK division for sample rate */ | |
104 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, | |
105 | S3C2410_IISMOD_32FS); | |
106 | if (ret < 0) | |
107 | return ret; | |
108 | ||
109 | /* set codec BCLK division for sample rate */ | |
110 | ret = snd_soc_dai_set_clkdiv(codec_dai, | |
111 | WM8753_BCLKDIV, bclk); | |
112 | if (ret < 0) | |
113 | return ret; | |
114 | ||
115 | /* set prescaler division for sample rate */ | |
116 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, | |
117 | S3C24XX_PRESCALE(4, 4)); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | ||
121 | /* codec PLL input is PCLK/4 */ | |
85488037 | 122 | ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, |
606689e9 MB |
123 | iis_clkrate / 4, pll_out); |
124 | if (ret < 0) | |
125 | return ret; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream) | |
131 | { | |
132 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
133 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
134 | ||
135 | /* disable the PLL */ | |
136 | return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Neo1973 WM8753 HiFi DAI opserations. | |
141 | */ | |
142 | static struct snd_soc_ops neo1973_gta02_hifi_ops = { | |
143 | .hw_params = neo1973_gta02_hifi_hw_params, | |
144 | .hw_free = neo1973_gta02_hifi_hw_free, | |
145 | }; | |
146 | ||
147 | static int neo1973_gta02_voice_hw_params( | |
148 | struct snd_pcm_substream *substream, | |
149 | struct snd_pcm_hw_params *params) | |
150 | { | |
151 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
152 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
153 | unsigned int pcmdiv = 0; | |
154 | int ret = 0; | |
155 | unsigned long iis_clkrate; | |
156 | ||
157 | iis_clkrate = s3c24xx_i2s_get_clockrate(); | |
158 | ||
159 | if (params_rate(params) != 8000) | |
160 | return -EINVAL; | |
161 | if (params_channels(params) != 1) | |
162 | return -EINVAL; | |
163 | ||
164 | pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */ | |
165 | ||
166 | /* todo: gg check mode (DSP_B) against CSR datasheet */ | |
167 | /* set codec DAI configuration */ | |
168 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | | |
169 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
170 | if (ret < 0) | |
171 | return ret; | |
172 | ||
173 | /* set the codec system clock for DAC and ADC */ | |
174 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, | |
175 | 12288000, SND_SOC_CLOCK_IN); | |
176 | if (ret < 0) | |
177 | return ret; | |
178 | ||
179 | /* set codec PCM division for sample rate */ | |
180 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, | |
181 | pcmdiv); | |
182 | if (ret < 0) | |
183 | return ret; | |
184 | ||
185 | /* configue and enable PLL for 12.288MHz output */ | |
186 | ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, | |
187 | iis_clkrate / 4, 12288000); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream) | |
195 | { | |
196 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
197 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
198 | ||
199 | /* disable the PLL */ | |
200 | return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0); | |
201 | } | |
202 | ||
203 | static struct snd_soc_ops neo1973_gta02_voice_ops = { | |
204 | .hw_params = neo1973_gta02_voice_hw_params, | |
205 | .hw_free = neo1973_gta02_voice_hw_free, | |
206 | }; | |
207 | ||
208 | #define LM4853_AMP 1 | |
209 | #define LM4853_SPK 2 | |
210 | ||
211 | static u8 lm4853_state; | |
212 | ||
213 | /* This has no effect, it exists only to maintain compatibility with | |
214 | * existing ALSA state files. | |
215 | */ | |
216 | static int lm4853_set_state(struct snd_kcontrol *kcontrol, | |
217 | struct snd_ctl_elem_value *ucontrol) | |
218 | { | |
219 | int val = ucontrol->value.integer.value[0]; | |
220 | ||
221 | if (val) | |
222 | lm4853_state |= LM4853_AMP; | |
223 | else | |
224 | lm4853_state &= ~LM4853_AMP; | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
229 | static int lm4853_get_state(struct snd_kcontrol *kcontrol, | |
230 | struct snd_ctl_elem_value *ucontrol) | |
231 | { | |
232 | ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP; | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | static int lm4853_set_spk(struct snd_kcontrol *kcontrol, | |
238 | struct snd_ctl_elem_value *ucontrol) | |
239 | { | |
240 | int val = ucontrol->value.integer.value[0]; | |
241 | ||
242 | if (val) { | |
243 | lm4853_state |= LM4853_SPK; | |
82c4362e | 244 | gpio_set_value(GTA02_GPIO_HP_IN, 0); |
606689e9 MB |
245 | } else { |
246 | lm4853_state &= ~LM4853_SPK; | |
82c4362e | 247 | gpio_set_value(GTA02_GPIO_HP_IN, 1); |
606689e9 MB |
248 | } |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static int lm4853_get_spk(struct snd_kcontrol *kcontrol, | |
254 | struct snd_ctl_elem_value *ucontrol) | |
255 | { | |
256 | ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1; | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static int lm4853_event(struct snd_soc_dapm_widget *w, | |
262 | struct snd_kcontrol *k, | |
263 | int event) | |
264 | { | |
82c4362e | 265 | gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(value)); |
606689e9 MB |
266 | |
267 | return 0; | |
268 | } | |
269 | ||
270 | static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = { | |
271 | SND_SOC_DAPM_SPK("Stereo Out", lm4853_event), | |
272 | SND_SOC_DAPM_LINE("GSM Line Out", NULL), | |
273 | SND_SOC_DAPM_LINE("GSM Line In", NULL), | |
274 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
275 | SND_SOC_DAPM_MIC("Handset Mic", NULL), | |
276 | SND_SOC_DAPM_SPK("Handset Spk", NULL), | |
277 | }; | |
278 | ||
279 | ||
280 | /* example machine audio_mapnections */ | |
281 | static const struct snd_soc_dapm_route audio_map[] = { | |
282 | ||
283 | /* Connections to the lm4853 amp */ | |
284 | {"Stereo Out", NULL, "LOUT1"}, | |
285 | {"Stereo Out", NULL, "ROUT1"}, | |
286 | ||
287 | /* Connections to the GSM Module */ | |
288 | {"GSM Line Out", NULL, "MONO1"}, | |
289 | {"GSM Line Out", NULL, "MONO2"}, | |
290 | {"RXP", NULL, "GSM Line In"}, | |
291 | {"RXN", NULL, "GSM Line In"}, | |
292 | ||
293 | /* Connections to Headset */ | |
294 | {"MIC1", NULL, "Mic Bias"}, | |
295 | {"Mic Bias", NULL, "Headset Mic"}, | |
296 | ||
297 | /* Call Mic */ | |
298 | {"MIC2", NULL, "Mic Bias"}, | |
299 | {"MIC2N", NULL, "Mic Bias"}, | |
300 | {"Mic Bias", NULL, "Handset Mic"}, | |
301 | ||
302 | /* Call Speaker */ | |
303 | {"Handset Spk", NULL, "LOUT2"}, | |
304 | {"Handset Spk", NULL, "ROUT2"}, | |
305 | ||
306 | /* Connect the ALC pins */ | |
307 | {"ACIN", NULL, "ACOP"}, | |
308 | }; | |
309 | ||
310 | static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = { | |
311 | SOC_DAPM_PIN_SWITCH("Stereo Out"), | |
312 | SOC_DAPM_PIN_SWITCH("GSM Line Out"), | |
313 | SOC_DAPM_PIN_SWITCH("GSM Line In"), | |
314 | SOC_DAPM_PIN_SWITCH("Headset Mic"), | |
315 | SOC_DAPM_PIN_SWITCH("Handset Mic"), | |
316 | SOC_DAPM_PIN_SWITCH("Handset Spk"), | |
317 | ||
318 | /* This has no effect, it exists only to maintain compatibility with | |
319 | * existing ALSA state files. | |
320 | */ | |
321 | SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0, | |
322 | lm4853_get_state, | |
323 | lm4853_set_state), | |
324 | SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0, | |
325 | lm4853_get_spk, | |
326 | lm4853_set_spk), | |
327 | }; | |
328 | ||
329 | /* | |
330 | * This is an example machine initialisation for a wm8753 connected to a | |
331 | * neo1973 GTA02. | |
332 | */ | |
333 | static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec) | |
334 | { | |
69331fbd | 335 | int err; |
606689e9 MB |
336 | |
337 | /* set up NC codec pins */ | |
338 | snd_soc_dapm_nc_pin(codec, "OUT3"); | |
339 | snd_soc_dapm_nc_pin(codec, "OUT4"); | |
340 | snd_soc_dapm_nc_pin(codec, "LINE1"); | |
341 | snd_soc_dapm_nc_pin(codec, "LINE2"); | |
342 | ||
343 | /* Add neo1973 gta02 specific widgets */ | |
344 | snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets, | |
345 | ARRAY_SIZE(wm8753_dapm_widgets)); | |
346 | ||
347 | /* add neo1973 gta02 specific controls */ | |
69331fbd LPC |
348 | err = snd_soc_add_controls(codec, wm8753_neo1973_gta02_controls, |
349 | ARRAY_SIZE(wm8753_neo1973_gta02_controls)); | |
350 | ||
351 | if (err < 0) | |
352 | return err; | |
606689e9 MB |
353 | |
354 | /* set up neo1973 gta02 specific audio path audio_map */ | |
355 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
356 | ||
357 | /* set endpoints to default off mode */ | |
358 | snd_soc_dapm_disable_pin(codec, "Stereo Out"); | |
359 | snd_soc_dapm_disable_pin(codec, "GSM Line Out"); | |
360 | snd_soc_dapm_disable_pin(codec, "GSM Line In"); | |
361 | snd_soc_dapm_disable_pin(codec, "Headset Mic"); | |
362 | snd_soc_dapm_disable_pin(codec, "Handset Mic"); | |
363 | snd_soc_dapm_disable_pin(codec, "Handset Spk"); | |
364 | ||
365 | snd_soc_dapm_sync(codec); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | /* | |
371 | * BT Codec DAI | |
372 | */ | |
373 | static struct snd_soc_dai bt_dai = { | |
374 | .name = "Bluetooth", | |
375 | .id = 0, | |
376 | .playback = { | |
377 | .channels_min = 1, | |
378 | .channels_max = 1, | |
379 | .rates = SNDRV_PCM_RATE_8000, | |
380 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
381 | .capture = { | |
382 | .channels_min = 1, | |
383 | .channels_max = 1, | |
384 | .rates = SNDRV_PCM_RATE_8000, | |
385 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
386 | }; | |
387 | ||
388 | static struct snd_soc_dai_link neo1973_gta02_dai[] = { | |
389 | { /* Hifi Playback - for similatious use with voice below */ | |
390 | .name = "WM8753", | |
391 | .stream_name = "WM8753 HiFi", | |
392 | .cpu_dai = &s3c24xx_i2s_dai, | |
393 | .codec_dai = &wm8753_dai[WM8753_DAI_HIFI], | |
394 | .init = neo1973_gta02_wm8753_init, | |
395 | .ops = &neo1973_gta02_hifi_ops, | |
396 | }, | |
397 | { /* Voice via BT */ | |
398 | .name = "Bluetooth", | |
399 | .stream_name = "Voice", | |
400 | .cpu_dai = &bt_dai, | |
401 | .codec_dai = &wm8753_dai[WM8753_DAI_VOICE], | |
402 | .ops = &neo1973_gta02_voice_ops, | |
403 | }, | |
404 | }; | |
405 | ||
406 | static struct snd_soc_card neo1973_gta02 = { | |
407 | .name = "neo1973-gta02", | |
408 | .platform = &s3c24xx_soc_platform, | |
409 | .dai_link = neo1973_gta02_dai, | |
410 | .num_links = ARRAY_SIZE(neo1973_gta02_dai), | |
411 | }; | |
412 | ||
413 | static struct snd_soc_device neo1973_gta02_snd_devdata = { | |
414 | .card = &neo1973_gta02, | |
415 | .codec_dev = &soc_codec_dev_wm8753, | |
416 | }; | |
417 | ||
418 | static struct platform_device *neo1973_gta02_snd_device; | |
419 | ||
420 | static int __init neo1973_gta02_init(void) | |
421 | { | |
422 | int ret; | |
423 | ||
424 | if (!machine_is_neo1973_gta02()) { | |
425 | printk(KERN_INFO | |
426 | "Only GTA02 is supported by this ASoC driver\n"); | |
427 | return -ENODEV; | |
428 | } | |
429 | ||
430 | /* register bluetooth DAI here */ | |
431 | ret = snd_soc_register_dai(&bt_dai); | |
432 | if (ret) | |
433 | return ret; | |
434 | ||
435 | neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1); | |
436 | if (!neo1973_gta02_snd_device) | |
437 | return -ENOMEM; | |
438 | ||
439 | platform_set_drvdata(neo1973_gta02_snd_device, | |
440 | &neo1973_gta02_snd_devdata); | |
441 | neo1973_gta02_snd_devdata.dev = &neo1973_gta02_snd_device->dev; | |
442 | ret = platform_device_add(neo1973_gta02_snd_device); | |
443 | ||
444 | if (ret) { | |
445 | platform_device_put(neo1973_gta02_snd_device); | |
446 | return ret; | |
447 | } | |
448 | ||
449 | /* Initialise GPIOs used by amp */ | |
82c4362e LPC |
450 | ret = gpio_request(GTA02_GPIO_HP_IN, "GTA02_HP_IN"); |
451 | if (ret) { | |
452 | pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_HP_IN); | |
453 | goto err_unregister_device; | |
454 | } | |
606689e9 | 455 | |
82c4362e LPC |
456 | ret = gpio_direction_output(GTA02_GPIO_AMP_HP_IN, 1); |
457 | if (ret) { | |
458 | pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_HP_IN); | |
459 | goto err_free_gpio_hp_in; | |
460 | } | |
606689e9 | 461 | |
82c4362e LPC |
462 | ret = gpio_request(GTA02_GPIO_AMP_SHUT, "GTA02_AMP_SHUT"); |
463 | if (ret) { | |
464 | pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_AMP_SHUT); | |
465 | goto err_free_gpio_hp_in; | |
466 | } | |
606689e9 | 467 | |
82c4362e LPC |
468 | ret = gpio_direction_output(GTA02_GPIO_AMP_SHUT, 1); |
469 | if (ret) { | |
470 | pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_AMP_SHUT); | |
471 | goto err_free_gpio_amp_shut; | |
472 | } | |
473 | ||
474 | return 0; | |
475 | ||
476 | err_free_gpio_amp_shut: | |
477 | gpio_free(GTA02_GPIO_AMP_SHUT); | |
478 | err_free_gpio_hp_in: | |
479 | gpio_free(GTA02_GPIO_HP_IN); | |
480 | err_unregister_device: | |
481 | platform_device_unregister(neo1973_gta02_snd_device); | |
606689e9 MB |
482 | return ret; |
483 | } | |
484 | module_init(neo1973_gta02_init); | |
485 | ||
486 | static void __exit neo1973_gta02_exit(void) | |
487 | { | |
488 | snd_soc_unregister_dai(&bt_dai); | |
489 | platform_device_unregister(neo1973_gta02_snd_device); | |
82c4362e LPC |
490 | gpio_free(GTA02_GPIO_HP_IN); |
491 | gpio_free(GTA02_GPIO_AMP_SHUT); | |
606689e9 MB |
492 | } |
493 | module_exit(neo1973_gta02_exit); | |
494 | ||
495 | /* Module information */ | |
496 | MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org"); | |
497 | MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02"); | |
498 | MODULE_LICENSE("GPL"); |