2 * poodle.c -- SoC audio for Poodle
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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 <sound/driver.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
28 #include <asm/mach-types.h>
29 #include <asm/hardware/locomo.h>
30 #include <asm/arch/pxa-regs.h>
31 #include <asm/arch/hardware.h>
32 #include <asm/arch/poodle.h>
33 #include <asm/arch/audio.h>
35 #include "../codecs/wm8731.h"
36 #include "pxa2xx-pcm.h"
39 #define POODLE_HP_OFF 0
40 #define POODLE_SPK_ON 1
41 #define POODLE_SPK_OFF 0
43 /* audio clock in Hz - rounded from 12.235MHz */
44 #define POODLE_AUDIO_CLOCK 12288000
46 static int poodle_jack_func;
47 static int poodle_spk_func;
49 static void poodle_ext_control(struct snd_soc_codec *codec)
53 /* set up jack connection */
54 if (poodle_jack_func == POODLE_HP) {
55 /* set = unmute headphone */
56 locomo_gpio_write(&poodle_locomo_device.dev,
57 POODLE_LOCOMO_GPIO_MUTE_L, 1);
58 locomo_gpio_write(&poodle_locomo_device.dev,
59 POODLE_LOCOMO_GPIO_MUTE_R, 1);
60 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
62 locomo_gpio_write(&poodle_locomo_device.dev,
63 POODLE_LOCOMO_GPIO_MUTE_L, 0);
64 locomo_gpio_write(&poodle_locomo_device.dev,
65 POODLE_LOCOMO_GPIO_MUTE_R, 0);
66 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
69 if (poodle_spk_func == POODLE_SPK_ON)
72 /* set the enpoints to their new connetion states */
73 snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
75 /* signal a DAPM event */
76 snd_soc_dapm_sync_endpoints(codec);
79 static int poodle_startup(struct snd_pcm_substream *substream)
81 struct snd_soc_pcm_runtime *rtd = substream->private_data;
82 struct snd_soc_codec *codec = rtd->socdev->codec;
84 /* check the jack status at stream startup */
85 poodle_ext_control(codec);
89 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
90 static int poodle_shutdown(struct snd_pcm_substream *substream)
92 struct snd_soc_pcm_runtime *rtd = substream->private_data;
93 struct snd_soc_codec *codec = rtd->socdev->codec;
95 /* set = unmute headphone */
96 locomo_gpio_write(&poodle_locomo_device.dev,
97 POODLE_LOCOMO_GPIO_MUTE_L, 1);
98 locomo_gpio_write(&poodle_locomo_device.dev,
99 POODLE_LOCOMO_GPIO_MUTE_R, 1);
103 static struct snd_soc_ops poodle_ops = {
104 .startup = poodle_startup,
105 .shutdown = poodle_shutdown,
108 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
109 struct snd_ctl_elem_value *ucontrol)
111 ucontrol->value.integer.value[0] = poodle_jack_func;
115 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
116 struct snd_ctl_elem_value *ucontrol)
118 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
120 if (poodle_jack_func == ucontrol->value.integer.value[0])
123 poodle_jack_func = ucontrol->value.integer.value[0];
124 poodle_ext_control(codec);
128 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
129 struct snd_ctl_elem_value *ucontrol)
131 ucontrol->value.integer.value[0] = poodle_spk_func;
135 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
136 struct snd_ctl_elem_value *ucontrol)
138 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
140 if (poodle_spk_func == ucontrol->value.integer.value[0])
143 poodle_spk_func = ucontrol->value.integer.value[0];
144 poodle_ext_control(codec);
148 static int poodle_amp_event(struct snd_soc_dapm_widget *w, int event)
150 if (SND_SOC_DAPM_EVENT_ON(event))
151 locomo_gpio_write(&poodle_locomo_device.dev,
152 POODLE_LOCOMO_GPIO_AMP_ON, 0);
154 locomo_gpio_write(&poodle_locomo_device.dev,
155 POODLE_LOCOMO_GPIO_AMP_ON, 1);
160 /* poodle machine dapm widgets */
161 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
162 SND_SOC_DAPM_HP("Headphone Jack", NULL),
163 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
166 /* Corgi machine audio_mapnections to the codec pins */
167 static const char *audio_map[][3] = {
169 /* headphone connected to LHPOUT1, RHPOUT1 */
170 {"Headphone Jack", NULL, "LHPOUT"},
171 {"Headphone Jack", NULL, "RHPOUT"},
173 /* speaker connected to LOUT, ROUT */
174 {"Ext Spk", NULL, "ROUT"},
175 {"Ext Spk", NULL, "LOUT"},
180 static const char *jack_function[] = {"Off", "Headphone"};
181 static const char *spk_function[] = {"Off", "On"};
182 static const struct soc_enum poodle_enum[] = {
183 SOC_ENUM_SINGLE_EXT(2, jack_function),
184 SOC_ENUM_SINGLE_EXT(2, spk_function),
187 static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
188 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
190 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
195 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
197 static int poodle_wm8731_init(struct snd_soc_codec *codec)
201 snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
202 snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
203 snd_soc_dapm_set_endpoint(codec, "MICIN", 1);
205 /* Add poodle specific controls */
206 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
207 err = snd_ctl_add(codec->card,
208 snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL));
213 /* Add poodle specific widgets */
214 for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
215 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
218 /* Set up poodle specific audio path audio_map */
219 for (i = 0; audio_map[i][0] != NULL; i++) {
220 snd_soc_dapm_connect_input(codec, audio_map[i][0],
221 audio_map[i][1], audio_map[i][2]);
224 snd_soc_dapm_sync_endpoints(codec);
228 static unsigned int poodle_config_sysclk(struct snd_soc_pcm_runtime *rtd,
229 struct snd_soc_clock_info *info)
231 if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
232 /* pxa2xx is i2s master */
233 switch (info->rate) {
236 /* configure codec digital filters for 44.1, 88.2 */
237 rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
241 /* configure codec digital filters for all other rates */
242 rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
246 return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
249 /* codec is i2s master -
250 * only configure codec DAI clock and filters */
251 return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
256 /* poodle digital audio interface glue - connects codec <--> CPU */
257 static struct snd_soc_dai_link poodle_dai = {
259 .stream_name = "WM8731",
260 .cpu_dai = &pxa_i2s_dai,
261 .codec_dai = &wm8731_dai,
262 .init = poodle_wm8731_init,
263 .config_sysclk = poodle_config_sysclk,
266 /* poodle audio machine driver */
267 static struct snd_soc_machine snd_soc_machine_poodle = {
269 .dai_link = &poodle_dai,
274 /* poodle audio private data */
275 static struct wm8731_setup_data poodle_wm8731_setup = {
279 /* poodle audio subsystem */
280 static struct snd_soc_device poodle_snd_devdata = {
281 .machine = &snd_soc_machine_poodle,
282 .platform = &pxa2xx_soc_platform,
283 .codec_dev = &soc_codec_dev_wm8731,
284 .codec_data = &poodle_wm8731_setup,
287 static struct platform_device *poodle_snd_device;
289 static int __init poodle_init(void)
293 if (!machine_is_poodle())
296 locomo_gpio_set_dir(&poodle_locomo_device.dev,
297 POODLE_LOCOMO_GPIO_AMP_ON, 0);
298 /* should we mute HP at startup - burning power ?*/
299 locomo_gpio_set_dir(&poodle_locomo_device.dev,
300 POODLE_LOCOMO_GPIO_MUTE_L, 0);
301 locomo_gpio_set_dir(&poodle_locomo_device.dev,
302 POODLE_LOCOMO_GPIO_MUTE_R, 0);
304 poodle_snd_device = platform_device_alloc("soc-audio", -1);
305 if (!poodle_snd_device)
308 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
309 poodle_snd_devdata.dev = &poodle_snd_device->dev;
310 ret = platform_device_add(poodle_snd_device);
313 platform_device_put(poodle_snd_device);
318 static void __exit poodle_exit(void)
320 platform_device_unregister(poodle_snd_device);
323 module_init(poodle_init);
324 module_exit(poodle_exit);
326 /* Module information */
327 MODULE_AUTHOR("Richard Purdie");
328 MODULE_DESCRIPTION("ALSA SoC Poodle");
329 MODULE_LICENSE("GPL");