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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 | { | |
6e24dd93 LG |
51 | /* set up jack connection */ |
52 | if (poodle_jack_func == POODLE_HP) { | |
53 | /* set = unmute headphone */ | |
54 | locomo_gpio_write(&poodle_locomo_device.dev, | |
55 | POODLE_LOCOMO_GPIO_MUTE_L, 1); | |
56 | locomo_gpio_write(&poodle_locomo_device.dev, | |
57 | POODLE_LOCOMO_GPIO_MUTE_R, 1); | |
a5302181 | 58 | snd_soc_dapm_enable_pin(codec, "Headphone Jack"); |
6e24dd93 LG |
59 | } else { |
60 | locomo_gpio_write(&poodle_locomo_device.dev, | |
61 | POODLE_LOCOMO_GPIO_MUTE_L, 0); | |
62 | locomo_gpio_write(&poodle_locomo_device.dev, | |
63 | POODLE_LOCOMO_GPIO_MUTE_R, 0); | |
a5302181 | 64 | snd_soc_dapm_disable_pin(codec, "Headphone Jack"); |
6e24dd93 LG |
65 | } |
66 | ||
6e24dd93 | 67 | /* set the enpoints to their new connetion states */ |
a5302181 LG |
68 | if (poodle_spk_func == POODLE_SPK_ON) |
69 | snd_soc_dapm_enable_pin(codec, "Ext Spk"); | |
70 | else | |
71 | snd_soc_dapm_disable_pin(codec, "Ext Spk"); | |
6e24dd93 LG |
72 | |
73 | /* signal a DAPM event */ | |
a5302181 | 74 | snd_soc_dapm_sync(codec); |
6e24dd93 LG |
75 | } |
76 | ||
77 | static int poodle_startup(struct snd_pcm_substream *substream) | |
78 | { | |
79 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
80 | struct snd_soc_codec *codec = rtd->socdev->codec; | |
81 | ||
82 | /* check the jack status at stream startup */ | |
83 | poodle_ext_control(codec); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* we need to unmute the HP at shutdown as the mute burns power on poodle */ | |
88 | static int poodle_shutdown(struct snd_pcm_substream *substream) | |
89 | { | |
90 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
91 | struct snd_soc_codec *codec = rtd->socdev->codec; | |
92 | ||
93 | /* set = unmute headphone */ | |
94 | locomo_gpio_write(&poodle_locomo_device.dev, | |
95 | POODLE_LOCOMO_GPIO_MUTE_L, 1); | |
96 | locomo_gpio_write(&poodle_locomo_device.dev, | |
97 | POODLE_LOCOMO_GPIO_MUTE_R, 1); | |
98 | return 0; | |
99 | } | |
100 | ||
73f40dc1 LG |
101 | static int poodle_hw_params(struct snd_pcm_substream *substream, |
102 | struct snd_pcm_hw_params *params) | |
103 | { | |
104 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
105 | struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai; | |
106 | struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai; | |
107 | unsigned int clk = 0; | |
108 | int ret = 0; | |
109 | ||
110 | switch (params_rate(params)) { | |
111 | case 8000: | |
112 | case 16000: | |
113 | case 48000: | |
114 | case 96000: | |
115 | clk = 12288000; | |
116 | break; | |
117 | case 11025: | |
118 | case 22050: | |
119 | case 44100: | |
120 | clk = 11289600; | |
121 | break; | |
122 | } | |
123 | ||
124 | /* set codec DAI configuration */ | |
125 | ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
126 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
127 | if (ret < 0) | |
128 | return ret; | |
129 | ||
130 | /* set cpu DAI configuration */ | |
131 | ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
132 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
133 | if (ret < 0) | |
134 | return ret; | |
135 | ||
136 | /* set the codec system clock for DAC and ADC */ | |
137 | ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk, | |
138 | SND_SOC_CLOCK_IN); | |
139 | if (ret < 0) | |
140 | return ret; | |
141 | ||
142 | /* set the I2S system clock as input (unused) */ | |
143 | ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, | |
144 | SND_SOC_CLOCK_IN); | |
145 | if (ret < 0) | |
146 | return ret; | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
6e24dd93 LG |
151 | static struct snd_soc_ops poodle_ops = { |
152 | .startup = poodle_startup, | |
73f40dc1 | 153 | .hw_params = poodle_hw_params, |
6e24dd93 LG |
154 | .shutdown = poodle_shutdown, |
155 | }; | |
156 | ||
157 | static int poodle_get_jack(struct snd_kcontrol *kcontrol, | |
158 | struct snd_ctl_elem_value *ucontrol) | |
159 | { | |
160 | ucontrol->value.integer.value[0] = poodle_jack_func; | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static int poodle_set_jack(struct snd_kcontrol *kcontrol, | |
165 | struct snd_ctl_elem_value *ucontrol) | |
166 | { | |
167 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
168 | ||
169 | if (poodle_jack_func == ucontrol->value.integer.value[0]) | |
170 | return 0; | |
171 | ||
172 | poodle_jack_func = ucontrol->value.integer.value[0]; | |
173 | poodle_ext_control(codec); | |
174 | return 1; | |
175 | } | |
176 | ||
177 | static int poodle_get_spk(struct snd_kcontrol *kcontrol, | |
178 | struct snd_ctl_elem_value *ucontrol) | |
179 | { | |
180 | ucontrol->value.integer.value[0] = poodle_spk_func; | |
181 | return 0; | |
182 | } | |
183 | ||
184 | static int poodle_set_spk(struct snd_kcontrol *kcontrol, | |
185 | struct snd_ctl_elem_value *ucontrol) | |
186 | { | |
187 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
188 | ||
189 | if (poodle_spk_func == ucontrol->value.integer.value[0]) | |
190 | return 0; | |
191 | ||
192 | poodle_spk_func = ucontrol->value.integer.value[0]; | |
193 | poodle_ext_control(codec); | |
194 | return 1; | |
195 | } | |
196 | ||
338c7ed0 JN |
197 | static int poodle_amp_event(struct snd_soc_dapm_widget *w, |
198 | struct snd_kcontrol *k, int event) | |
6e24dd93 LG |
199 | { |
200 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
201 | locomo_gpio_write(&poodle_locomo_device.dev, | |
202 | POODLE_LOCOMO_GPIO_AMP_ON, 0); | |
203 | else | |
204 | locomo_gpio_write(&poodle_locomo_device.dev, | |
205 | POODLE_LOCOMO_GPIO_AMP_ON, 1); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | /* poodle machine dapm widgets */ | |
211 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
212 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
213 | SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event), | |
214 | }; | |
215 | ||
25191c45 MB |
216 | /* Corgi machine connections to the codec pins */ |
217 | static const struct snd_soc_dapm_route audio_map[] = { | |
6e24dd93 LG |
218 | |
219 | /* headphone connected to LHPOUT1, RHPOUT1 */ | |
220 | {"Headphone Jack", NULL, "LHPOUT"}, | |
221 | {"Headphone Jack", NULL, "RHPOUT"}, | |
222 | ||
223 | /* speaker connected to LOUT, ROUT */ | |
224 | {"Ext Spk", NULL, "ROUT"}, | |
225 | {"Ext Spk", NULL, "LOUT"}, | |
6e24dd93 LG |
226 | }; |
227 | ||
228 | static const char *jack_function[] = {"Off", "Headphone"}; | |
229 | static const char *spk_function[] = {"Off", "On"}; | |
230 | static const struct soc_enum poodle_enum[] = { | |
231 | SOC_ENUM_SINGLE_EXT(2, jack_function), | |
232 | SOC_ENUM_SINGLE_EXT(2, spk_function), | |
233 | }; | |
234 | ||
235 | static const snd_kcontrol_new_t wm8731_poodle_controls[] = { | |
236 | SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, | |
237 | poodle_set_jack), | |
238 | SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, | |
239 | poodle_set_spk), | |
240 | }; | |
241 | ||
242 | /* | |
243 | * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device | |
244 | */ | |
245 | static int poodle_wm8731_init(struct snd_soc_codec *codec) | |
246 | { | |
247 | int i, err; | |
248 | ||
a5302181 LG |
249 | snd_soc_dapm_disable_pin(codec, "LLINEIN"); |
250 | snd_soc_dapm_disable_pin(codec, "RLINEIN"); | |
251 | snd_soc_dapm_enable_pin(codec, "MICIN"); | |
6e24dd93 LG |
252 | |
253 | /* Add poodle specific controls */ | |
254 | for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) { | |
255 | err = snd_ctl_add(codec->card, | |
29e36e49 | 256 | snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL)); |
6e24dd93 LG |
257 | if (err < 0) |
258 | return err; | |
259 | } | |
260 | ||
261 | /* Add poodle specific widgets */ | |
25191c45 MB |
262 | snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets, |
263 | ARRAY_SIZE(wm8731_dapm_widgets)); | |
6e24dd93 LG |
264 | |
265 | /* Set up poodle specific audio path audio_map */ | |
25191c45 | 266 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
6e24dd93 | 267 | |
a5302181 | 268 | snd_soc_dapm_sync(codec); |
6e24dd93 LG |
269 | return 0; |
270 | } | |
271 | ||
6e24dd93 LG |
272 | /* poodle digital audio interface glue - connects codec <--> CPU */ |
273 | static struct snd_soc_dai_link poodle_dai = { | |
274 | .name = "WM8731", | |
275 | .stream_name = "WM8731", | |
276 | .cpu_dai = &pxa_i2s_dai, | |
277 | .codec_dai = &wm8731_dai, | |
278 | .init = poodle_wm8731_init, | |
73f40dc1 | 279 | .ops = &poodle_ops, |
6e24dd93 LG |
280 | }; |
281 | ||
282 | /* poodle audio machine driver */ | |
283 | static struct snd_soc_machine snd_soc_machine_poodle = { | |
284 | .name = "Poodle", | |
285 | .dai_link = &poodle_dai, | |
286 | .num_links = 1, | |
6e24dd93 LG |
287 | }; |
288 | ||
289 | /* poodle audio private data */ | |
290 | static struct wm8731_setup_data poodle_wm8731_setup = { | |
291 | .i2c_address = 0x1b, | |
292 | }; | |
293 | ||
294 | /* poodle audio subsystem */ | |
295 | static struct snd_soc_device poodle_snd_devdata = { | |
296 | .machine = &snd_soc_machine_poodle, | |
297 | .platform = &pxa2xx_soc_platform, | |
298 | .codec_dev = &soc_codec_dev_wm8731, | |
299 | .codec_data = &poodle_wm8731_setup, | |
300 | }; | |
301 | ||
302 | static struct platform_device *poodle_snd_device; | |
303 | ||
304 | static int __init poodle_init(void) | |
305 | { | |
306 | int ret; | |
307 | ||
308 | if (!machine_is_poodle()) | |
309 | return -ENODEV; | |
310 | ||
311 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
312 | POODLE_LOCOMO_GPIO_AMP_ON, 0); | |
313 | /* should we mute HP at startup - burning power ?*/ | |
314 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
315 | POODLE_LOCOMO_GPIO_MUTE_L, 0); | |
316 | locomo_gpio_set_dir(&poodle_locomo_device.dev, | |
317 | POODLE_LOCOMO_GPIO_MUTE_R, 0); | |
318 | ||
319 | poodle_snd_device = platform_device_alloc("soc-audio", -1); | |
320 | if (!poodle_snd_device) | |
321 | return -ENOMEM; | |
322 | ||
323 | platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata); | |
324 | poodle_snd_devdata.dev = &poodle_snd_device->dev; | |
325 | ret = platform_device_add(poodle_snd_device); | |
326 | ||
327 | if (ret) | |
328 | platform_device_put(poodle_snd_device); | |
329 | ||
330 | return ret; | |
331 | } | |
332 | ||
333 | static void __exit poodle_exit(void) | |
334 | { | |
335 | platform_device_unregister(poodle_snd_device); | |
336 | } | |
337 | ||
338 | module_init(poodle_init); | |
339 | module_exit(poodle_exit); | |
340 | ||
341 | /* Module information */ | |
342 | MODULE_AUTHOR("Richard Purdie"); | |
343 | MODULE_DESCRIPTION("ALSA SoC Poodle"); | |
344 | MODULE_LICENSE("GPL"); |