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 the codec system clock for DAC and ADC */
74 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
75 SND_SOC_CLOCK_IN);
76 if (ret < 0)
77 return ret;
78
79 /* set MCLK division for sample rate */
80 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
81 S3C2410_IISMOD_32FS);
82 if (ret < 0)
83 return ret;
84
85 /* set codec BCLK division for sample rate */
86 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
87 if (ret < 0)
88 return ret;
89
90 /* set prescaler division for sample rate */
91 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
92 S3C24XX_PRESCALE(4, 4));
93 if (ret < 0)
94 return ret;
95
96 /* codec PLL input is PCLK/4 */
97 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
98 iis_clkrate / 4, pll_out);
99 if (ret < 0)
100 return ret;
101
102 return 0;
103 }
104
neo1973_hifi_hw_free(struct snd_pcm_substream * substream)105 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
106 {
107 struct snd_soc_pcm_runtime *rtd = substream->private_data;
108 struct snd_soc_dai *codec_dai = rtd->codec_dai;
109
110 /* disable the PLL */
111 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
112 }
113
114 /*
115 * Neo1973 WM8753 HiFi DAI opserations.
116 */
117 static struct snd_soc_ops neo1973_hifi_ops = {
118 .hw_params = neo1973_hifi_hw_params,
119 .hw_free = neo1973_hifi_hw_free,
120 };
121
neo1973_voice_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)122 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
123 struct snd_pcm_hw_params *params)
124 {
125 struct snd_soc_pcm_runtime *rtd = substream->private_data;
126 struct snd_soc_dai *codec_dai = rtd->codec_dai;
127 unsigned int pcmdiv = 0;
128 int ret = 0;
129 unsigned long iis_clkrate;
130
131 iis_clkrate = s3c24xx_i2s_get_clockrate();
132
133 if (params_rate(params) != 8000)
134 return -EINVAL;
135 if (params_channels(params) != 1)
136 return -EINVAL;
137
138 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
139
140 /* set the codec system clock for DAC and ADC */
141 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
142 SND_SOC_CLOCK_IN);
143 if (ret < 0)
144 return ret;
145
146 /* set codec PCM division for sample rate */
147 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
148 if (ret < 0)
149 return ret;
150
151 /* configure and enable PLL for 12.288MHz output */
152 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
153 iis_clkrate / 4, 12288000);
154 if (ret < 0)
155 return ret;
156
157 return 0;
158 }
159
neo1973_voice_hw_free(struct snd_pcm_substream * substream)160 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
161 {
162 struct snd_soc_pcm_runtime *rtd = substream->private_data;
163 struct snd_soc_dai *codec_dai = rtd->codec_dai;
164
165 /* disable the PLL */
166 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
167 }
168
169 static struct snd_soc_ops neo1973_voice_ops = {
170 .hw_params = neo1973_voice_hw_params,
171 .hw_free = neo1973_voice_hw_free,
172 };
173
174 static int gta02_speaker_enabled;
175
lm4853_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)176 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
177 struct snd_ctl_elem_value *ucontrol)
178 {
179 gta02_speaker_enabled = ucontrol->value.integer.value[0];
180
181 gpio_set_value(S3C2410_GPJ(2), !gta02_speaker_enabled);
182
183 return 0;
184 }
185
lm4853_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)186 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol)
188 {
189 ucontrol->value.integer.value[0] = gta02_speaker_enabled;
190 return 0;
191 }
192
lm4853_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)193 static int lm4853_event(struct snd_soc_dapm_widget *w,
194 struct snd_kcontrol *k, int event)
195 {
196 gpio_set_value(S3C2410_GPJ(1), SND_SOC_DAPM_EVENT_OFF(event));
197
198 return 0;
199 }
200
201 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
202 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
203 SND_SOC_DAPM_LINE("GSM Line In", NULL),
204 SND_SOC_DAPM_MIC("Headset Mic", NULL),
205 SND_SOC_DAPM_MIC("Handset Mic", NULL),
206 SND_SOC_DAPM_SPK("Handset Spk", NULL),
207 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
208 };
209
210 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
211 /* Connections to the GSM Module */
212 {"GSM Line Out", NULL, "MONO1"},
213 {"GSM Line Out", NULL, "MONO2"},
214 {"RXP", NULL, "GSM Line In"},
215 {"RXN", NULL, "GSM Line In"},
216
217 /* Connections to Headset */
218 {"MIC1", NULL, "Mic Bias"},
219 {"Mic Bias", NULL, "Headset Mic"},
220
221 /* Call Mic */
222 {"MIC2", NULL, "Mic Bias"},
223 {"MIC2N", NULL, "Mic Bias"},
224 {"Mic Bias", NULL, "Handset Mic"},
225
226 /* Connect the ALC pins */
227 {"ACIN", NULL, "ACOP"},
228
229 /* Connections to the amp */
230 {"Stereo Out", NULL, "LOUT1"},
231 {"Stereo Out", NULL, "ROUT1"},
232
233 /* Call Speaker */
234 {"Handset Spk", NULL, "LOUT2"},
235 {"Handset Spk", NULL, "ROUT2"},
236 };
237
238 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
239 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
240 SOC_DAPM_PIN_SWITCH("GSM Line In"),
241 SOC_DAPM_PIN_SWITCH("Headset Mic"),
242 SOC_DAPM_PIN_SWITCH("Handset Mic"),
243 SOC_DAPM_PIN_SWITCH("Handset Spk"),
244 SOC_DAPM_PIN_SWITCH("Stereo Out"),
245
246 SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
247 lm4853_get_spk,
248 lm4853_set_spk),
249 };
250
neo1973_wm8753_init(struct snd_soc_pcm_runtime * rtd)251 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
252 {
253 struct snd_soc_card *card = rtd->card;
254
255 /* set endpoints to default off mode */
256 snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
257 snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
258 snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
259 snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
260 snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
261 snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
262
263 /* allow audio paths from the GSM modem to run during suspend */
264 snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
265 snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
266 snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
267 snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
268 snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
269 snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
270
271 return 0;
272 }
273
274 static struct snd_soc_dai_link neo1973_dai[] = {
275 { /* Hifi Playback - for similatious use with voice below */
276 .name = "WM8753",
277 .stream_name = "WM8753 HiFi",
278 .platform_name = "s3c24xx-iis",
279 .cpu_dai_name = "s3c24xx-iis",
280 .codec_dai_name = "wm8753-hifi",
281 .codec_name = "wm8753.0-001a",
282 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
283 SND_SOC_DAIFMT_CBM_CFM,
284 .init = neo1973_wm8753_init,
285 .ops = &neo1973_hifi_ops,
286 },
287 { /* Voice via BT */
288 .name = "Bluetooth",
289 .stream_name = "Voice",
290 .cpu_dai_name = "bt-sco-pcm",
291 .codec_dai_name = "wm8753-voice",
292 .codec_name = "wm8753.0-001a",
293 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
294 SND_SOC_DAIFMT_CBS_CFS,
295 .ops = &neo1973_voice_ops,
296 },
297 };
298
299 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
300 {
301 .name = "dfbmcs320",
302 .codec_name = "dfbmcs320.0",
303 },
304 };
305
306 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
307 {
308 .dev_name = "lm4857.0-007c",
309 .name_prefix = "Amp",
310 },
311 };
312
313 static const struct gpio neo1973_gta02_gpios[] = {
314 { S3C2410_GPJ(2), GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
315 { S3C2410_GPJ(1), GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
316 };
317
318 static struct snd_soc_card neo1973 = {
319 .name = "neo1973",
320 .owner = THIS_MODULE,
321 .dai_link = neo1973_dai,
322 .num_links = ARRAY_SIZE(neo1973_dai),
323 .aux_dev = neo1973_aux_devs,
324 .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
325 .codec_conf = neo1973_codec_conf,
326 .num_configs = ARRAY_SIZE(neo1973_codec_conf),
327
328 .controls = neo1973_wm8753_controls,
329 .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
330 .dapm_widgets = neo1973_wm8753_dapm_widgets,
331 .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
332 .dapm_routes = neo1973_wm8753_routes,
333 .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
334 .fully_routed = true,
335 };
336
337 static struct platform_device *neo1973_snd_device;
338
neo1973_init(void)339 static int __init neo1973_init(void)
340 {
341 int ret;
342
343 if (!machine_is_neo1973_gta02())
344 return -ENODEV;
345
346 if (machine_is_neo1973_gta02()) {
347 neo1973.name = "neo1973gta02";
348 neo1973.num_aux_devs = 1;
349
350 ret = gpio_request_array(neo1973_gta02_gpios,
351 ARRAY_SIZE(neo1973_gta02_gpios));
352 if (ret)
353 return ret;
354 }
355
356 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
357 if (!neo1973_snd_device) {
358 ret = -ENOMEM;
359 goto err_gpio_free;
360 }
361
362 platform_set_drvdata(neo1973_snd_device, &neo1973);
363 ret = platform_device_add(neo1973_snd_device);
364
365 if (ret)
366 goto err_put_device;
367
368 return 0;
369
370 err_put_device:
371 platform_device_put(neo1973_snd_device);
372 err_gpio_free:
373 if (machine_is_neo1973_gta02()) {
374 gpio_free_array(neo1973_gta02_gpios,
375 ARRAY_SIZE(neo1973_gta02_gpios));
376 }
377 return ret;
378 }
379 module_init(neo1973_init);
380
neo1973_exit(void)381 static void __exit neo1973_exit(void)
382 {
383 platform_device_unregister(neo1973_snd_device);
384
385 if (machine_is_neo1973_gta02()) {
386 gpio_free_array(neo1973_gta02_gpios,
387 ARRAY_SIZE(neo1973_gta02_gpios));
388 }
389 }
390 module_exit(neo1973_exit);
391
392 /* Module information */
393 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
394 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
395 MODULE_LICENSE("GPL");
396