Add linux-next specific files for 20110421
[linux-2.6/next.git] / sound / soc / pxa / spitz.c
blobb253d864868a558001dd9e6e90b0e33d739a254d
1 /*
2 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
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.
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>
27 #include <asm/mach-types.h>
28 #include <mach/spitz.h>
29 #include "../codecs/wm8750.h"
30 #include "pxa2xx-i2s.h"
32 #define SPITZ_HP 0
33 #define SPITZ_MIC 1
34 #define SPITZ_LINE 2
35 #define SPITZ_HEADSET 3
36 #define SPITZ_HP_OFF 4
37 #define SPITZ_SPK_ON 0
38 #define SPITZ_SPK_OFF 1
40 /* audio clock in Hz - rounded from 12.235MHz */
41 #define SPITZ_AUDIO_CLOCK 12288000
43 static int spitz_jack_func;
44 static int spitz_spk_func;
45 static int spitz_mic_gpio;
47 static void spitz_ext_control(struct snd_soc_codec *codec)
49 struct snd_soc_dapm_context *dapm = &codec->dapm;
51 if (spitz_spk_func == SPITZ_SPK_ON)
52 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
53 else
54 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
56 /* set up jack connection */
57 switch (spitz_jack_func) {
58 case SPITZ_HP:
59 /* enable and unmute hp jack, disable mic bias */
60 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
61 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
62 snd_soc_dapm_disable_pin(dapm, "Line Jack");
63 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
64 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
65 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
66 break;
67 case SPITZ_MIC:
68 /* enable mic jack and bias, mute hp */
69 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
70 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
71 snd_soc_dapm_disable_pin(dapm, "Line Jack");
72 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
73 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
74 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
75 break;
76 case SPITZ_LINE:
77 /* enable line jack, disable mic bias and mute hp */
78 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
79 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
80 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
81 snd_soc_dapm_enable_pin(dapm, "Line Jack");
82 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
83 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
84 break;
85 case SPITZ_HEADSET:
86 /* enable and unmute headset jack enable mic bias, mute L hp */
87 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
88 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
89 snd_soc_dapm_disable_pin(dapm, "Line Jack");
90 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
91 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
92 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
93 break;
94 case SPITZ_HP_OFF:
96 /* jack removed, everything off */
97 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
98 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
99 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
100 snd_soc_dapm_disable_pin(dapm, "Line Jack");
101 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
102 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
103 break;
105 snd_soc_dapm_sync(dapm);
108 static int spitz_startup(struct snd_pcm_substream *substream)
110 struct snd_soc_pcm_runtime *rtd = substream->private_data;
111 struct snd_soc_codec *codec = rtd->codec;
113 mutex_lock(&codec->mutex);
115 /* check the jack status at stream startup */
116 spitz_ext_control(codec);
118 mutex_unlock(&codec->mutex);
120 return 0;
123 static int spitz_hw_params(struct snd_pcm_substream *substream,
124 struct snd_pcm_hw_params *params)
126 struct snd_soc_pcm_runtime *rtd = substream->private_data;
127 struct snd_soc_dai *codec_dai = rtd->codec_dai;
128 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
129 unsigned int clk = 0;
130 int ret = 0;
132 switch (params_rate(params)) {
133 case 8000:
134 case 16000:
135 case 48000:
136 case 96000:
137 clk = 12288000;
138 break;
139 case 11025:
140 case 22050:
141 case 44100:
142 clk = 11289600;
143 break;
146 /* set codec DAI configuration */
147 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
148 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
149 if (ret < 0)
150 return ret;
152 /* set cpu DAI configuration */
153 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
154 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
155 if (ret < 0)
156 return ret;
158 /* set the codec system clock for DAC and ADC */
159 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
160 SND_SOC_CLOCK_IN);
161 if (ret < 0)
162 return ret;
164 /* set the I2S system clock as input (unused) */
165 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
166 SND_SOC_CLOCK_IN);
167 if (ret < 0)
168 return ret;
170 return 0;
173 static struct snd_soc_ops spitz_ops = {
174 .startup = spitz_startup,
175 .hw_params = spitz_hw_params,
178 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
179 struct snd_ctl_elem_value *ucontrol)
181 ucontrol->value.integer.value[0] = spitz_jack_func;
182 return 0;
185 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
186 struct snd_ctl_elem_value *ucontrol)
188 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
190 if (spitz_jack_func == ucontrol->value.integer.value[0])
191 return 0;
193 spitz_jack_func = ucontrol->value.integer.value[0];
194 spitz_ext_control(codec);
195 return 1;
198 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
199 struct snd_ctl_elem_value *ucontrol)
201 ucontrol->value.integer.value[0] = spitz_spk_func;
202 return 0;
205 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
206 struct snd_ctl_elem_value *ucontrol)
208 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
210 if (spitz_spk_func == ucontrol->value.integer.value[0])
211 return 0;
213 spitz_spk_func = ucontrol->value.integer.value[0];
214 spitz_ext_control(codec);
215 return 1;
218 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
219 struct snd_kcontrol *k, int event)
221 gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
222 return 0;
225 /* spitz machine dapm widgets */
226 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
227 SND_SOC_DAPM_HP("Headphone Jack", NULL),
228 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
229 SND_SOC_DAPM_SPK("Ext Spk", NULL),
230 SND_SOC_DAPM_LINE("Line Jack", NULL),
232 /* headset is a mic and mono headphone */
233 SND_SOC_DAPM_HP("Headset Jack", NULL),
236 /* Spitz machine audio_map */
237 static const struct snd_soc_dapm_route audio_map[] = {
239 /* headphone connected to LOUT1, ROUT1 */
240 {"Headphone Jack", NULL, "LOUT1"},
241 {"Headphone Jack", NULL, "ROUT1"},
243 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
244 {"Headset Jack", NULL, "ROUT1"},
246 /* ext speaker connected to LOUT2, ROUT2 */
247 {"Ext Spk", NULL , "ROUT2"},
248 {"Ext Spk", NULL , "LOUT2"},
250 /* mic is connected to input 1 - with bias */
251 {"LINPUT1", NULL, "Mic Bias"},
252 {"Mic Bias", NULL, "Mic Jack"},
254 /* line is connected to input 1 - no bias */
255 {"LINPUT1", NULL, "Line Jack"},
258 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
259 "Off"};
260 static const char *spk_function[] = {"On", "Off"};
261 static const struct soc_enum spitz_enum[] = {
262 SOC_ENUM_SINGLE_EXT(5, jack_function),
263 SOC_ENUM_SINGLE_EXT(2, spk_function),
266 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
267 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
268 spitz_set_jack),
269 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
270 spitz_set_spk),
274 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
276 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
278 struct snd_soc_codec *codec = rtd->codec;
279 struct snd_soc_dapm_context *dapm = &codec->dapm;
280 int err;
282 /* NC codec pins */
283 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
284 snd_soc_dapm_nc_pin(dapm, "LINPUT2");
285 snd_soc_dapm_nc_pin(dapm, "RINPUT2");
286 snd_soc_dapm_nc_pin(dapm, "LINPUT3");
287 snd_soc_dapm_nc_pin(dapm, "RINPUT3");
288 snd_soc_dapm_nc_pin(dapm, "OUT3");
289 snd_soc_dapm_nc_pin(dapm, "MONO1");
291 /* Add spitz specific controls */
292 err = snd_soc_add_controls(codec, wm8750_spitz_controls,
293 ARRAY_SIZE(wm8750_spitz_controls));
294 if (err < 0)
295 return err;
297 /* Add spitz specific widgets */
298 snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
299 ARRAY_SIZE(wm8750_dapm_widgets));
301 /* Set up spitz specific audio paths */
302 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
304 snd_soc_dapm_sync(dapm);
305 return 0;
308 /* spitz digital audio interface glue - connects codec <--> CPU */
309 static struct snd_soc_dai_link spitz_dai = {
310 .name = "wm8750",
311 .stream_name = "WM8750",
312 .cpu_dai_name = "pxa2xx-i2s",
313 .codec_dai_name = "wm8750-hifi",
314 .platform_name = "pxa-pcm-audio",
315 .codec_name = "wm8750-codec.0-001b",
316 .init = spitz_wm8750_init,
317 .ops = &spitz_ops,
320 /* spitz audio machine driver */
321 static struct snd_soc_card snd_soc_spitz = {
322 .name = "Spitz",
323 .dai_link = &spitz_dai,
324 .num_links = 1,
327 static struct platform_device *spitz_snd_device;
329 static int __init spitz_init(void)
331 int ret;
333 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
334 return -ENODEV;
336 if (machine_is_borzoi() || machine_is_spitz())
337 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
338 else
339 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
341 ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
342 if (ret)
343 goto err1;
345 ret = gpio_direction_output(spitz_mic_gpio, 0);
346 if (ret)
347 goto err2;
349 spitz_snd_device = platform_device_alloc("soc-audio", -1);
350 if (!spitz_snd_device) {
351 ret = -ENOMEM;
352 goto err2;
355 platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
357 ret = platform_device_add(spitz_snd_device);
358 if (ret)
359 goto err3;
361 return 0;
363 err3:
364 platform_device_put(spitz_snd_device);
365 err2:
366 gpio_free(spitz_mic_gpio);
367 err1:
368 return ret;
371 static void __exit spitz_exit(void)
373 platform_device_unregister(spitz_snd_device);
374 gpio_free(spitz_mic_gpio);
377 module_init(spitz_init);
378 module_exit(spitz_exit);
380 MODULE_AUTHOR("Richard Purdie");
381 MODULE_DESCRIPTION("ALSA SoC Spitz");
382 MODULE_LICENSE("GPL");