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6e24dd93 LG |
1 | /* |
2 | * poodle.c -- SoC audio for Poodle | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Copyright 2005 Openedhand Ltd. | |
6 | * | |
7 | * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com> | |
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 <sound/driver.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 <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> | |
34 | ||
35 | #include "../codecs/wm8731.h" | |
36 | #include "pxa2xx-pcm.h" | |
37 | ||
38 | #define POODLE_HP 1 | |
39 | #define POODLE_HP_OFF 0 | |
40 | #define POODLE_SPK_ON 1 | |
41 | #define POODLE_SPK_OFF 0 | |
42 | ||
43 | /* audio clock in Hz - rounded from 12.235MHz */ | |
44 | #define POODLE_AUDIO_CLOCK 12288000 | |
45 | ||
46 | static int poodle_jack_func; | |
47 | static int poodle_spk_func; | |
48 | ||
49 | static void poodle_ext_control(struct snd_soc_codec *codec) | |
50 | { | |
51 | int spk = 0; | |
52 | ||
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); | |
61 | } else { | |
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); | |
67 | } | |
68 | ||
69 | if (poodle_spk_func == POODLE_SPK_ON) | |
70 | spk = 1; | |
71 | ||
72 | /* set the enpoints to their new connetion states */ | |
73 | snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk); | |
74 | ||
75 | /* signal a DAPM event */ | |
76 | snd_soc_dapm_sync_endpoints(codec); | |
77 | } | |
78 | ||
79 | static int poodle_startup(struct snd_pcm_substream *substream) | |
80 | { | |
81 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
82 | struct snd_soc_codec *codec = rtd->socdev->codec; | |
83 | ||
84 | /* check the jack status at stream startup */ | |
85 | poodle_ext_control(codec); | |
86 | return 0; | |
87 | } | |
88 | ||
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) | |
91 | { | |
92 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
93 | struct snd_soc_codec *codec = rtd->socdev->codec; | |
94 | ||
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); | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static struct snd_soc_ops poodle_ops = { | |
104 | .startup = poodle_startup, | |
105 | .shutdown = poodle_shutdown, | |
106 | }; | |
107 | ||
108 | static int poodle_get_jack(struct snd_kcontrol *kcontrol, | |
109 | struct snd_ctl_elem_value *ucontrol) | |
110 | { | |
111 | ucontrol->value.integer.value[0] = poodle_jack_func; | |
112 | return 0; | |
113 | } | |
114 | ||
115 | static int poodle_set_jack(struct snd_kcontrol *kcontrol, | |
116 | struct snd_ctl_elem_value *ucontrol) | |
117 | { | |
118 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
119 | ||
120 | if (poodle_jack_func == ucontrol->value.integer.value[0]) | |
121 | return 0; | |
122 | ||
123 | poodle_jack_func = ucontrol->value.integer.value[0]; | |
124 | poodle_ext_control(codec); | |
125 | return 1; | |
126 | } | |
127 | ||
128 | static int poodle_get_spk(struct snd_kcontrol *kcontrol, | |
129 | struct snd_ctl_elem_value *ucontrol) | |
130 | { | |
131 | ucontrol->value.integer.value[0] = poodle_spk_func; | |
132 | return 0; | |
133 | } | |
134 | ||
135 | static int poodle_set_spk(struct snd_kcontrol *kcontrol, | |
136 | struct snd_ctl_elem_value *ucontrol) | |
137 | { | |
138 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
139 | ||
140 | if (poodle_spk_func == ucontrol->value.integer.value[0]) | |
141 | return 0; | |
142 | ||
143 | poodle_spk_func = ucontrol->value.integer.value[0]; | |
144 | poodle_ext_control(codec); | |
145 | return 1; | |
146 | } | |
147 | ||
148 | static int poodle_amp_event(struct snd_soc_dapm_widget *w, int event) | |
149 | { | |
150 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
151 | locomo_gpio_write(&poodle_locomo_device.dev, | |
152 | POODLE_LOCOMO_GPIO_AMP_ON, 0); | |
153 | else | |
154 | locomo_gpio_write(&poodle_locomo_device.dev, | |
155 | POODLE_LOCOMO_GPIO_AMP_ON, 1); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
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), | |
164 | }; | |
165 | ||
166 | /* Corgi machine audio_mapnections to the codec pins */ | |
167 | static const char *audio_map[][3] = { | |
168 | ||
169 | /* headphone connected to LHPOUT1, RHPOUT1 */ | |
170 | {"Headphone Jack", NULL, "LHPOUT"}, | |
171 | {"Headphone Jack", NULL, "RHPOUT"}, | |
172 | ||
173 | /* speaker connected to LOUT, ROUT */ | |
174 | {"Ext Spk", NULL, "ROUT"}, | |
175 | {"Ext Spk", NULL, "LOUT"}, | |
176 | ||
177 | {NULL, NULL, NULL}, | |
178 | }; | |
179 | ||
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), | |
185 | }; | |
186 | ||
187 | static const snd_kcontrol_new_t wm8731_poodle_controls[] = { | |
188 | SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, | |
189 | poodle_set_jack), | |
190 | SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, | |
191 | poodle_set_spk), | |
192 | }; | |
193 | ||
194 | /* | |
195 | * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device | |
196 | */ | |
197 | static int poodle_wm8731_init(struct snd_soc_codec *codec) | |
198 | { | |
199 | int i, err; | |
200 | ||
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); | |
204 | ||
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)); | |
209 | if (err < 0) | |
210 | return err; | |
211 | } | |
212 | ||
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]); | |
216 | } | |
217 | ||
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]); | |
222 | } | |
223 | ||
224 | snd_soc_dapm_sync_endpoints(codec); | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static unsigned int poodle_config_sysclk(struct snd_soc_pcm_runtime *rtd, | |
229 | struct snd_soc_clock_info *info) | |
230 | { | |
231 | if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) { | |
232 | /* pxa2xx is i2s master */ | |
233 | switch (info->rate) { | |
234 | case 44100: | |
235 | case 88200: | |
236 | /* configure codec digital filters for 44.1, 88.2 */ | |
237 | rtd->codec_dai->config_sysclk(rtd->codec_dai, info, | |
238 | 11289600); | |
239 | break; | |
240 | default: | |
241 | /* configure codec digital filters for all other rates */ | |
242 | rtd->codec_dai->config_sysclk(rtd->codec_dai, info, | |
243 | POODLE_AUDIO_CLOCK); | |
244 | break; | |
245 | } | |
246 | return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info, | |
247 | POODLE_AUDIO_CLOCK); | |
248 | } else { | |
249 | /* codec is i2s master - | |
250 | * only configure codec DAI clock and filters */ | |
251 | return rtd->codec_dai->config_sysclk(rtd->codec_dai, info, | |
252 | POODLE_AUDIO_CLOCK); | |
253 | } | |
254 | } | |
255 | ||
256 | /* poodle digital audio interface glue - connects codec <--> CPU */ | |
257 | static struct snd_soc_dai_link poodle_dai = { | |
258 | .name = "WM8731", | |
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, | |
264 | }; | |
265 | ||
266 | /* poodle audio machine driver */ | |
267 | static struct snd_soc_machine snd_soc_machine_poodle = { | |
268 | .name = "Poodle", | |
269 | .dai_link = &poodle_dai, | |
270 | .num_links = 1, | |
271 | .ops = &poodle_ops, | |
272 | }; | |
273 | ||
274 | /* poodle audio private data */ | |
275 | static struct wm8731_setup_data poodle_wm8731_setup = { | |
276 | .i2c_address = 0x1b, | |
277 | }; | |
278 | ||
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, | |
285 | }; | |
286 | ||
287 | static struct platform_device *poodle_snd_device; | |
288 | ||
289 | static int __init poodle_init(void) | |
290 | { | |
291 | int ret; | |
292 | ||
293 | if (!machine_is_poodle()) | |
294 | return -ENODEV; | |
295 | ||
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); | |
303 | ||
304 | poodle_snd_device = platform_device_alloc("soc-audio", -1); | |
305 | if (!poodle_snd_device) | |
306 | return -ENOMEM; | |
307 | ||
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); | |
311 | ||
312 | if (ret) | |
313 | platform_device_put(poodle_snd_device); | |
314 | ||
315 | return ret; | |
316 | } | |
317 | ||
318 | static void __exit poodle_exit(void) | |
319 | { | |
320 | platform_device_unregister(poodle_snd_device); | |
321 | } | |
322 | ||
323 | module_init(poodle_init); | |
324 | module_exit(poodle_exit); | |
325 | ||
326 | /* Module information */ | |
327 | MODULE_AUTHOR("Richard Purdie"); | |
328 | MODULE_DESCRIPTION("ALSA SoC Poodle"); | |
329 | MODULE_LICENSE("GPL"); |