1 /*
2 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
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
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/timer.h>
20 #include <linux/interrupt.h>
21 #include <linux/platform_device.h>
22 #include <linux/gpio.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
27
28 #include <asm/mach-types.h>
29 #include <mach/spitz.h>
30 #include "../codecs/wm8750.h"
31 #include "pxa2xx-pcm.h"
32 #include "pxa2xx-i2s.h"
33
34 #define SPITZ_HP 0
35 #define SPITZ_MIC 1
36 #define SPITZ_LINE 2
37 #define SPITZ_HEADSET 3
38 #define SPITZ_HP_OFF 4
39 #define SPITZ_SPK_ON 0
40 #define SPITZ_SPK_OFF 1
41
42 /* audio clock in Hz - rounded from 12.235MHz */
43 #define SPITZ_AUDIO_CLOCK 12288000
44
45 static int spitz_jack_func;
46 static int spitz_spk_func;
47
48 static void spitz_ext_control(struct snd_soc_codec *codec)
49 {
50 if (spitz_spk_func == SPITZ_SPK_ON)
51 snd_soc_dapm_enable_pin(codec, "Ext Spk");
52 else
53 snd_soc_dapm_disable_pin(codec, "Ext Spk");
54
55 /* set up jack connection */
56 switch (spitz_jack_func) {
57 case SPITZ_HP:
58 /* enable and unmute hp jack, disable mic bias */
59 snd_soc_dapm_disable_pin(codec, "Headset Jack");
60 snd_soc_dapm_disable_pin(codec, "Mic Jack");
61 snd_soc_dapm_disable_pin(codec, "Line Jack");
62 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
63 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
64 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
65 break;
66 case SPITZ_MIC:
67 /* enable mic jack and bias, mute hp */
68 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
69 snd_soc_dapm_disable_pin(codec, "Headset Jack");
70 snd_soc_dapm_disable_pin(codec, "Line Jack");
71 snd_soc_dapm_enable_pin(codec, "Mic Jack");
72 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
73 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
74 break;
75 case SPITZ_LINE:
76 /* enable line jack, disable mic bias and mute hp */
77 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
78 snd_soc_dapm_disable_pin(codec, "Headset Jack");
79 snd_soc_dapm_disable_pin(codec, "Mic Jack");
80 snd_soc_dapm_enable_pin(codec, "Line Jack");
81 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
82 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
83 break;
84 case SPITZ_HEADSET:
85 /* enable and unmute headset jack enable mic bias, mute L hp */
86 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
87 snd_soc_dapm_enable_pin(codec, "Mic Jack");
88 snd_soc_dapm_disable_pin(codec, "Line Jack");
89 snd_soc_dapm_enable_pin(codec, "Headset Jack");
90 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
91 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
92 break;
93 case SPITZ_HP_OFF:
94
95 /* jack removed, everything off */
96 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
97 snd_soc_dapm_disable_pin(codec, "Headset Jack");
98 snd_soc_dapm_disable_pin(codec, "Mic Jack");
99 snd_soc_dapm_disable_pin(codec, "Line Jack");
100 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
101 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
102 break;
103 }
104 snd_soc_dapm_sync(codec);
105 }
106
107 static int spitz_startup(struct snd_pcm_substream *substream)
108 {
109 struct snd_soc_pcm_runtime *rtd = substream->private_data;
110 struct snd_soc_codec *codec = rtd->socdev->card->codec;
111
112 /* check the jack status at stream startup */
113 spitz_ext_control(codec);
114 return 0;
115 }
116
117 static int spitz_hw_params(struct snd_pcm_substream *substream,
118 struct snd_pcm_hw_params *params)
119 {
120 struct snd_soc_pcm_runtime *rtd = substream->private_data;
121 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
122 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
123 unsigned int clk = 0;
124 int ret = 0;
125
126 switch (params_rate(params)) {
127 case 8000:
128 case 16000:
129 case 48000:
130 case 96000:
131 clk = 12288000;
132 break;
133 case 11025:
134 case 22050:
135 case 44100:
136 clk = 11289600;
137 break;
138 }
139
140 /* set codec DAI configuration */
141 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
142 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
143 if (ret < 0)
144 return ret;
145
146 /* set cpu DAI configuration */
147 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
148 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
149 if (ret < 0)
150 return ret;
151
152 /* set the codec system clock for DAC and ADC */
153 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
154 SND_SOC_CLOCK_IN);
155 if (ret < 0)
156 return ret;
157
158 /* set the I2S system clock as input (unused) */
159 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
160 SND_SOC_CLOCK_IN);
161 if (ret < 0)
162 return ret;
163
164 return 0;
165 }
166
167 static struct snd_soc_ops spitz_ops = {
168 .startup = spitz_startup,
169 .hw_params = spitz_hw_params,
170 };
171
172 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
173 struct snd_ctl_elem_value *ucontrol)
174 {
175 ucontrol->value.integer.value[0] = spitz_jack_func;
176 return 0;
177 }
178
179 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
180 struct snd_ctl_elem_value *ucontrol)
181 {
182 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
183
184 if (spitz_jack_func == ucontrol->value.integer.value[0])
185 return 0;
186
187 spitz_jack_func = ucontrol->value.integer.value[0];
188 spitz_ext_control(codec);
189 return 1;
190 }
191
192 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
193 struct snd_ctl_elem_value *ucontrol)
194 {
195 ucontrol->value.integer.value[0] = spitz_spk_func;
196 return 0;
197 }
198
199 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
200 struct snd_ctl_elem_value *ucontrol)
201 {
202 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
203
204 if (spitz_spk_func == ucontrol->value.integer.value[0])
205 return 0;
206
207 spitz_spk_func = ucontrol->value.integer.value[0];
208 spitz_ext_control(codec);
209 return 1;
210 }
211
212 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
213 struct snd_kcontrol *k, int event)
214 {
215 if (machine_is_borzoi() || machine_is_spitz())
216 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
217 SND_SOC_DAPM_EVENT_ON(event));
218
219 if (machine_is_akita())
220 gpio_set_value(AKITA_GPIO_MIC_BIAS,
221 SND_SOC_DAPM_EVENT_ON(event));
222
223 return 0;
224 }
225
226 /* spitz machine dapm widgets */
227 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
228 SND_SOC_DAPM_HP("Headphone Jack", NULL),
229 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
230 SND_SOC_DAPM_SPK("Ext Spk", NULL),
231 SND_SOC_DAPM_LINE("Line Jack", NULL),
232
233 /* headset is a mic and mono headphone */
234 SND_SOC_DAPM_HP("Headset Jack", NULL),
235 };
236
237 /* Spitz machine audio_map */
238 static const struct snd_soc_dapm_route audio_map[] = {
239
240 /* headphone connected to LOUT1, ROUT1 */
241 {"Headphone Jack", NULL, "LOUT1"},
242 {"Headphone Jack", NULL, "ROUT1"},
243
244 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
245 {"Headset Jack", NULL, "ROUT1"},
246
247 /* ext speaker connected to LOUT2, ROUT2 */
248 {"Ext Spk", NULL , "ROUT2"},
249 {"Ext Spk", NULL , "LOUT2"},
250
251 /* mic is connected to input 1 - with bias */
252 {"LINPUT1", NULL, "Mic Bias"},
253 {"Mic Bias", NULL, "Mic Jack"},
254
255 /* line is connected to input 1 - no bias */
256 {"LINPUT1", NULL, "Line Jack"},
257 };
258
259 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
260 "Off"};
261 static const char *spk_function[] = {"On", "Off"};
262 static const struct soc_enum spitz_enum[] = {
263 SOC_ENUM_SINGLE_EXT(5, jack_function),
264 SOC_ENUM_SINGLE_EXT(2, spk_function),
265 };
266
267 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
268 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
269 spitz_set_jack),
270 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
271 spitz_set_spk),
272 };
273
274 /*
275 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
276 */
277 static int spitz_wm8750_init(struct snd_soc_codec *codec)
278 {
279 int err;
280
281 /* NC codec pins */
282 snd_soc_dapm_nc_pin(codec, "RINPUT1");
283 snd_soc_dapm_nc_pin(codec, "LINPUT2");
284 snd_soc_dapm_nc_pin(codec, "RINPUT2");
285 snd_soc_dapm_nc_pin(codec, "LINPUT3");
286 snd_soc_dapm_nc_pin(codec, "RINPUT3");
287 snd_soc_dapm_nc_pin(codec, "OUT3");
288 snd_soc_dapm_nc_pin(codec, "MONO1");
289
290 /* Add spitz specific controls */
291 err = snd_soc_add_controls(codec, wm8750_spitz_controls,
292 ARRAY_SIZE(wm8750_spitz_controls));
293 if (err < 0)
294 return err;
295
296 /* Add spitz specific widgets */
297 snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
298 ARRAY_SIZE(wm8750_dapm_widgets));
299
300 /* Set up spitz specific audio paths */
301 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
302
303 snd_soc_dapm_sync(codec);
304 return 0;
305 }
306
307 /* spitz digital audio interface glue - connects codec <--> CPU */
308 static struct snd_soc_dai_link spitz_dai = {
309 .name = "wm8750",
310 .stream_name = "WM8750",
311 .cpu_dai = &pxa_i2s_dai,
312 .codec_dai = &wm8750_dai,
313 .init = spitz_wm8750_init,
314 .ops = &spitz_ops,
315 };
316
317 /* spitz audio machine driver */
318 static struct snd_soc_card snd_soc_spitz = {
319 .name = "Spitz",
320 .platform = &pxa2xx_soc_platform,
321 .dai_link = &spitz_dai,
322 .num_links = 1,
323 };
324
325 /* spitz audio private data */
326 static struct wm8750_setup_data spitz_wm8750_setup = {
327 .i2c_bus = 0,
328 .i2c_address = 0x1b,
329 };
330
331 /* spitz audio subsystem */
332 static struct snd_soc_device spitz_snd_devdata = {
333 .card = &snd_soc_spitz,
334 .codec_dev = &soc_codec_dev_wm8750,
335 .codec_data = &spitz_wm8750_setup,
336 };
337
338 static struct platform_device *spitz_snd_device;
339
340 static int __init spitz_init(void)
341 {
342 int ret;
343
344 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
345 return -ENODEV;
346
347 spitz_snd_device = platform_device_alloc("soc-audio", -1);
348 if (!spitz_snd_device)
349 return -ENOMEM;
350
351 platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
352 spitz_snd_devdata.dev = &spitz_snd_device->dev;
353 ret = platform_device_add(spitz_snd_device);
354
355 if (ret)
356 platform_device_put(spitz_snd_device);
357
358 return ret;
359 }
360
361 static void __exit spitz_exit(void)
362 {
363 platform_device_unregister(spitz_snd_device);
364 }
365
366 module_init(spitz_init);
367 module_exit(spitz_exit);
368
369 MODULE_AUTHOR("Richard Purdie");
370 MODULE_DESCRIPTION("ALSA SoC Spitz");
371 MODULE_LICENSE("GPL");
372
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