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"
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;
46 static void spitz_ext_control(struct snd_soc_codec *codec)
48 struct snd_soc_dapm_context *dapm = &codec->dapm;
50 if (spitz_spk_func == SPITZ_SPK_ON)
51 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
53 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
55 /* set up jack connection */
56 switch (spitz_jack_func) {
58 /* enable and unmute hp jack, disable mic bias */
59 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
60 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
61 snd_soc_dapm_disable_pin(dapm, "Line Jack");
62 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
63 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
64 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
67 /* enable mic jack and bias, mute hp */
68 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
69 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
70 snd_soc_dapm_disable_pin(dapm, "Line Jack");
71 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
72 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
73 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
76 /* enable line jack, disable mic bias and mute hp */
77 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
78 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
79 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
80 snd_soc_dapm_enable_pin(dapm, "Line Jack");
81 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
82 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
85 /* enable and unmute headset jack enable mic bias, mute L hp */
86 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
87 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
88 snd_soc_dapm_disable_pin(dapm, "Line Jack");
89 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
90 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
91 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
95 /* jack removed, everything off */
96 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
97 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
98 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
99 snd_soc_dapm_disable_pin(dapm, "Line Jack");
100 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
101 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
104 snd_soc_dapm_sync(dapm);
107 static int spitz_startup(struct snd_pcm_substream *substream)
109 struct snd_soc_pcm_runtime *rtd = substream->private_data;
110 struct snd_soc_codec *codec = rtd->codec;
112 mutex_lock(&codec->mutex);
114 /* check the jack status at stream startup */
115 spitz_ext_control(codec);
117 mutex_unlock(&codec->mutex);
122 static int spitz_hw_params(struct snd_pcm_substream *substream,
123 struct snd_pcm_hw_params *params)
125 struct snd_soc_pcm_runtime *rtd = substream->private_data;
126 struct snd_soc_dai *codec_dai = rtd->codec_dai;
127 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
128 unsigned int clk = 0;
131 switch (params_rate(params)) {
145 /* set codec DAI configuration */
146 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
147 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
151 /* set cpu DAI configuration */
152 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
153 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
157 /* set the codec system clock for DAC and ADC */
158 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
163 /* set the I2S system clock as input (unused) */
164 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
172 static struct snd_soc_ops spitz_ops = {
173 .startup = spitz_startup,
174 .hw_params = spitz_hw_params,
177 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
180 ucontrol->value.integer.value[0] = spitz_jack_func;
184 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol)
187 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
189 if (spitz_jack_func == ucontrol->value.integer.value[0])
192 spitz_jack_func = ucontrol->value.integer.value[0];
193 spitz_ext_control(codec);
197 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
198 struct snd_ctl_elem_value *ucontrol)
200 ucontrol->value.integer.value[0] = spitz_spk_func;
204 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
205 struct snd_ctl_elem_value *ucontrol)
207 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
209 if (spitz_spk_func == ucontrol->value.integer.value[0])
212 spitz_spk_func = ucontrol->value.integer.value[0];
213 spitz_ext_control(codec);
217 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
218 struct snd_kcontrol *k, int event)
220 if (machine_is_borzoi() || machine_is_spitz())
221 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
222 SND_SOC_DAPM_EVENT_ON(event));
224 if (machine_is_akita())
225 gpio_set_value(AKITA_GPIO_MIC_BIAS,
226 SND_SOC_DAPM_EVENT_ON(event));
231 /* spitz machine dapm widgets */
232 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
233 SND_SOC_DAPM_HP("Headphone Jack", NULL),
234 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
235 SND_SOC_DAPM_SPK("Ext Spk", NULL),
236 SND_SOC_DAPM_LINE("Line Jack", NULL),
238 /* headset is a mic and mono headphone */
239 SND_SOC_DAPM_HP("Headset Jack", NULL),
242 /* Spitz machine audio_map */
243 static const struct snd_soc_dapm_route audio_map[] = {
245 /* headphone connected to LOUT1, ROUT1 */
246 {"Headphone Jack", NULL, "LOUT1"},
247 {"Headphone Jack", NULL, "ROUT1"},
249 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
250 {"Headset Jack", NULL, "ROUT1"},
252 /* ext speaker connected to LOUT2, ROUT2 */
253 {"Ext Spk", NULL , "ROUT2"},
254 {"Ext Spk", NULL , "LOUT2"},
256 /* mic is connected to input 1 - with bias */
257 {"LINPUT1", NULL, "Mic Bias"},
258 {"Mic Bias", NULL, "Mic Jack"},
260 /* line is connected to input 1 - no bias */
261 {"LINPUT1", NULL, "Line Jack"},
264 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
266 static const char *spk_function[] = {"On", "Off"};
267 static const struct soc_enum spitz_enum[] = {
268 SOC_ENUM_SINGLE_EXT(5, jack_function),
269 SOC_ENUM_SINGLE_EXT(2, spk_function),
272 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
273 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
275 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
280 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
282 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
284 struct snd_soc_codec *codec = rtd->codec;
285 struct snd_soc_dapm_context *dapm = &codec->dapm;
289 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
290 snd_soc_dapm_nc_pin(dapm, "LINPUT2");
291 snd_soc_dapm_nc_pin(dapm, "RINPUT2");
292 snd_soc_dapm_nc_pin(dapm, "LINPUT3");
293 snd_soc_dapm_nc_pin(dapm, "RINPUT3");
294 snd_soc_dapm_nc_pin(dapm, "OUT3");
295 snd_soc_dapm_nc_pin(dapm, "MONO1");
297 /* Add spitz specific controls */
298 err = snd_soc_add_controls(codec, wm8750_spitz_controls,
299 ARRAY_SIZE(wm8750_spitz_controls));
303 /* Add spitz specific widgets */
304 snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
305 ARRAY_SIZE(wm8750_dapm_widgets));
307 /* Set up spitz specific audio paths */
308 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
310 snd_soc_dapm_sync(dapm);
314 /* spitz digital audio interface glue - connects codec <--> CPU */
315 static struct snd_soc_dai_link spitz_dai = {
317 .stream_name = "WM8750",
318 .cpu_dai_name = "pxa2xx-i2s",
319 .codec_dai_name = "wm8750-hifi",
320 .platform_name = "pxa-pcm-audio",
321 .codec_name = "wm8750-codec.0-001b",
322 .init = spitz_wm8750_init,
326 /* spitz audio machine driver */
327 static struct snd_soc_card snd_soc_spitz = {
329 .dai_link = &spitz_dai,
333 static struct platform_device *spitz_snd_device;
335 static int __init spitz_init(void)
339 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
342 spitz_snd_device = platform_device_alloc("soc-audio", -1);
343 if (!spitz_snd_device)
346 platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
347 ret = platform_device_add(spitz_snd_device);
350 platform_device_put(spitz_snd_device);
355 static void __exit spitz_exit(void)
357 platform_device_unregister(spitz_snd_device);
360 module_init(spitz_init);
361 module_exit(spitz_exit);
363 MODULE_AUTHOR("Richard Purdie");
364 MODULE_DESCRIPTION("ALSA SoC Spitz");
365 MODULE_LICENSE("GPL");