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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> | |
6e24dd93 LG |
22 | #include <sound/core.h> |
23 | #include <sound/pcm.h> | |
24 | #include <sound/soc.h> | |
25 | #include <sound/soc-dapm.h> | |
26 | ||
27 | #include <asm/mach-types.h> | |
28 | #include <asm/hardware/locomo.h> | |
29 | #include <asm/arch/pxa-regs.h> | |
30 | #include <asm/arch/hardware.h> | |
31 | #include <asm/arch/poodle.h> | |
32 | #include <asm/arch/audio.h> | |
33 | ||
34 | #include "../codecs/wm8731.h" | |
35 | #include "pxa2xx-pcm.h" | |
73f40dc1 | 36 | #include "pxa2xx-i2s.h" |
6e24dd93 LG |
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 | ||
73f40dc1 LG |
103 | static int poodle_hw_params(struct snd_pcm_substream *substream, |
104 | struct snd_pcm_hw_params *params) | |
105 | { | |
106 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
107 | struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai; | |
108 | struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai; | |
109 | unsigned int clk = 0; | |
110 | int ret = 0; | |
111 | ||
112 | switch (params_rate(params)) { | |
113 | case 8000: | |
114 | case 16000: | |
115 | case 48000: | |
116 | case 96000: | |
117 | clk = 12288000; | |
118 | break; | |
119 | case 11025: | |
120 | case 22050: | |
121 | case 44100: | |
122 | clk = 11289600; | |
123 | break; | |
124 | } | |
125 | ||
126 | /* set codec DAI configuration */ | |
127 | ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
128 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
132 | /* set cpu DAI configuration */ | |
133 | ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
134 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | /* set the codec system clock for DAC and ADC */ | |
139 | ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk, | |
140 | SND_SOC_CLOCK_IN); | |
141 | if (ret < 0) | |
142 | return ret; | |
143 | ||
144 | /* set the I2S system clock as input (unused) */ | |
145 | ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, | |
146 | SND_SOC_CLOCK_IN); | |
147 | if (ret < 0) | |
148 | return ret; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
6e24dd93 LG |
153 | static struct snd_soc_ops poodle_ops = { |
154 | .startup = poodle_startup, | |
73f40dc1 | 155 | .hw_params = poodle_hw_params, |
6e24dd93 LG |
156 | .shutdown = poodle_shutdown, |
157 | }; | |
158 | ||
159 | static int poodle_get_jack(struct snd_kcontrol *kcontrol, | |
160 | struct snd_ctl_elem_value *ucontrol) | |
161 | { | |
162 | ucontrol->value.integer.value[0] = poodle_jack_func; | |
163 | return 0; | |
164 | } | |
165 | ||
166 | static int poodle_set_jack(struct snd_kcontrol *kcontrol, | |
167 | struct snd_ctl_elem_value *ucontrol) | |
168 | { | |
169 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
170 | ||
171 | if (poodle_jack_func == ucontrol->value.integer.value[0]) | |
172 | return 0; | |
173 | ||
174 | poodle_jack_func = ucontrol->value.integer.value[0]; | |
175 | poodle_ext_control(codec); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | static int poodle_get_spk(struct snd_kcontrol *kcontrol, | |
180 | struct snd_ctl_elem_value *ucontrol) | |
181 | { | |
182 | ucontrol->value.integer.value[0] = poodle_spk_func; | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int poodle_set_spk(struct snd_kcontrol *kcontrol, | |
187 | struct snd_ctl_elem_value *ucontrol) | |
188 | { | |
189 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
190 | ||
191 | if (poodle_spk_func == ucontrol->value.integer.value[0]) | |
192 | return 0; | |
193 | ||
194 | poodle_spk_func = ucontrol->value.integer.value[0]; | |
195 | poodle_ext_control(codec); | |
196 | return 1; | |
197 | } | |
198 | ||
338c7ed0 JN |
199 | static int poodle_amp_event(struct snd_soc_dapm_widget *w, |
200 | struct snd_kcontrol *k, int event) | |
6e24dd93 LG |
201 | { |
202 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
203 | locomo_gpio_write(&poodle_locomo_device.dev, | |
204 | POODLE_LOCOMO_GPIO_AMP_ON, 0); | |
205 | else | |
206 | locomo_gpio_write(&poodle_locomo_device.dev, | |
207 | POODLE_LOCOMO_GPIO_AMP_ON, 1); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | /* poodle machine dapm widgets */ | |
213 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
214 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
215 | SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event), | |
216 | }; | |
217 | ||
218 | /* Corgi machine audio_mapnections to the codec pins */ | |
219 | static const char *audio_map[][3] = { | |
220 | ||
221 | /* headphone connected to LHPOUT1, RHPOUT1 */ | |
222 | {"Headphone Jack", NULL, "LHPOUT"}, | |
223 | {"Headphone Jack", NULL, "RHPOUT"}, | |
224 | ||
225 | /* speaker connected to LOUT, ROUT */ | |
226 | {"Ext Spk", NULL, "ROUT"}, | |
227 | {"Ext Spk", NULL, "LOUT"}, | |
228 | ||
229 | {NULL, NULL, NULL}, | |
230 | }; | |
231 | ||
232 | static const char *jack_function[] = {"Off", "Headphone"}; | |
233 | static const char *spk_function[] = {"Off", "On"}; | |
234 | static const struct soc_enum poodle_enum[] = { | |
235 | SOC_ENUM_SINGLE_EXT(2, jack_function), | |
236 | SOC_ENUM_SINGLE_EXT(2, spk_function), | |
237 | }; | |
238 | ||
239 | static const snd_kcontrol_new_t wm8731_poodle_controls[] = { | |
240 | SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, | |
241 | poodle_set_jack), | |
242 | SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, | |
243 | poodle_set_spk), | |
244 | }; | |
245 | ||
246 | /* | |
247 | * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device | |
248 | */ | |
249 | static int poodle_wm8731_init(struct snd_soc_codec *codec) | |
250 | { | |
251 | int i, err; | |
252 | ||
253 | snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0); | |
254 | snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0); | |
255 | snd_soc_dapm_set_endpoint(codec, "MICIN", 1); | |
256 | ||
257 | /* Add poodle specific controls */ | |
258 | for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) { | |
259 | err = snd_ctl_add(codec->card, | |
260 | snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL)); | |
261 | if (err < 0) | |
262 | return err; | |
263 | } | |
264 | ||
265 | /* Add poodle specific widgets */ | |
266 | for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) { | |
267 | snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]); | |
268 | } | |
269 | ||
270 | /* Set up poodle specific audio path audio_map */ | |
271 | for (i = 0; audio_map[i][0] != NULL; i++) { | |
272 | snd_soc_dapm_connect_input(codec, audio_map[i][0], | |
273 | audio_map[i][1], audio_map[i][2]); | |
274 | } | |
275 | ||
276 | snd_soc_dapm_sync_endpoints(codec); | |
277 | return 0; | |
278 | } | |
279 | ||
6e24dd93 LG |
280 | /* poodle digital audio interface glue - connects codec <--> CPU */ |
281 | static struct snd_soc_dai_link poodle_dai = { | |
282 | .name = "WM8731", | |
283 | .stream_name = "WM8731", | |
284 | .cpu_dai = &pxa_i2s_dai, | |
285 | .codec_dai = &wm8731_dai, | |
286 | .init = poodle_wm8731_init, | |
73f40dc1 | 287 | .ops = &poodle_ops, |
6e24dd93 LG |
288 | }; |
289 | ||
290 | /* poodle audio machine driver */ | |
291 | static struct snd_soc_machine snd_soc_machine_poodle = { | |
292 | .name = "Poodle", | |
293 | .dai_link = &poodle_dai, | |
294 | .num_links = 1, | |
6e24dd93 LG |
295 | }; |
296 | ||
297 | /* poodle audio private data */ | |
298 | static struct wm8731_setup_data poodle_wm8731_setup = { | |
299 | .i2c_address = 0x1b, | |
300 | }; | |
301 | ||
302 | /* poodle audio subsystem */ | |
303 | static struct snd_soc_device poodle_snd_devdata = { | |
304 | .machine = &snd_soc_machine_poodle, | |
305 | .platform = &pxa2xx_soc_platform, | |
306 | .codec_dev = &soc_codec_dev_wm8731, | |
307 | .codec_data = &poodle_wm8731_setup, | |
308 | }; | |
309 | ||
310 | static struct platform_device *poodle_snd_device; | |
311 | ||
312 | static int __init poodle_init(void) | |
313 | { | |
314 | int ret; | |
315 | ||
316 | if (!machine_is_poodle()) | |
317 | return -ENODEV; | |
318 | ||
319 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
320 | POODLE_LOCOMO_GPIO_AMP_ON, 0); | |
321 | /* should we mute HP at startup - burning power ?*/ | |
322 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
323 | POODLE_LOCOMO_GPIO_MUTE_L, 0); | |
324 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
325 | POODLE_LOCOMO_GPIO_MUTE_R, 0); | |
326 | ||
327 | poodle_snd_device = platform_device_alloc("soc-audio", -1); | |
328 | if (!poodle_snd_device) | |
329 | return -ENOMEM; | |
330 | ||
331 | platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata); | |
332 | poodle_snd_devdata.dev = &poodle_snd_device->dev; | |
333 | ret = platform_device_add(poodle_snd_device); | |
334 | ||
335 | if (ret) | |
336 | platform_device_put(poodle_snd_device); | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | static void __exit poodle_exit(void) | |
342 | { | |
343 | platform_device_unregister(poodle_snd_device); | |
344 | } | |
345 | ||
346 | module_init(poodle_init); | |
347 | module_exit(poodle_exit); | |
348 | ||
349 | /* Module information */ | |
350 | MODULE_AUTHOR("Richard Purdie"); | |
351 | MODULE_DESCRIPTION("ALSA SoC Poodle"); | |
352 | MODULE_LICENSE("GPL"); |