1 /*
2 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
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 <linux/gpio.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 <mach/pxa-regs.h>
30 #include <mach/hardware.h>
31 #include <mach/spitz.h>
32 #include "../codecs/wm8750.h"
33 #include "pxa2xx-pcm.h"
34 #include "pxa2xx-i2s.h"
35
36 #define SPITZ_HP 0
37 #define SPITZ_MIC 1
38 #define SPITZ_LINE 2
39 #define SPITZ_HEADSET 3
40 #define SPITZ_HP_OFF 4
41 #define SPITZ_SPK_ON 0
42 #define SPITZ_SPK_OFF 1
43
44 /* audio clock in Hz - rounded from 12.235MHz */
45 #define SPITZ_AUDIO_CLOCK 12288000
46
47 static int spitz_jack_func;
48 static int spitz_spk_func;
49
spitz_ext_control(struct snd_soc_codec * codec)50 static void spitz_ext_control(struct snd_soc_codec *codec)
51 {
52 if (spitz_spk_func == SPITZ_SPK_ON)
53 snd_soc_dapm_enable_pin(codec, "Ext Spk");
54 else
55 snd_soc_dapm_disable_pin(codec, "Ext Spk");
56
57 /* set up jack connection */
58 switch (spitz_jack_func) {
59 case SPITZ_HP:
60 /* enable and unmute hp jack, disable mic bias */
61 snd_soc_dapm_disable_pin(codec, "Headset Jack");
62 snd_soc_dapm_disable_pin(codec, "Mic Jack");
63 snd_soc_dapm_disable_pin(codec, "Line Jack");
64 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
65 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
66 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
67 break;
68 case SPITZ_MIC:
69 /* enable mic jack and bias, mute hp */
70 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
71 snd_soc_dapm_disable_pin(codec, "Headset Jack");
72 snd_soc_dapm_disable_pin(codec, "Line Jack");
73 snd_soc_dapm_enable_pin(codec, "Mic Jack");
74 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
75 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
76 break;
77 case SPITZ_LINE:
78 /* enable line jack, disable mic bias and mute hp */
79 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
80 snd_soc_dapm_disable_pin(codec, "Headset Jack");
81 snd_soc_dapm_disable_pin(codec, "Mic Jack");
82 snd_soc_dapm_enable_pin(codec, "Line Jack");
83 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
84 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
85 break;
86 case SPITZ_HEADSET:
87 /* enable and unmute headset jack enable mic bias, mute L hp */
88 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
89 snd_soc_dapm_enable_pin(codec, "Mic Jack");
90 snd_soc_dapm_disable_pin(codec, "Line Jack");
91 snd_soc_dapm_enable_pin(codec, "Headset Jack");
92 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
93 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
94 break;
95 case SPITZ_HP_OFF:
96
97 /* jack removed, everything off */
98 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
99 snd_soc_dapm_disable_pin(codec, "Headset Jack");
100 snd_soc_dapm_disable_pin(codec, "Mic Jack");
101 snd_soc_dapm_disable_pin(codec, "Line Jack");
102 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
103 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
104 break;
105 }
106 snd_soc_dapm_sync(codec);
107 }
108
spitz_startup(struct snd_pcm_substream * substream)109 static int spitz_startup(struct snd_pcm_substream *substream)
110 {
111 struct snd_soc_pcm_runtime *rtd = substream->private_data;
112 struct snd_soc_codec *codec = rtd->socdev->codec;
113
114 /* check the jack status at stream startup */
115 spitz_ext_control(codec);
116 return 0;
117 }
118
spitz_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)119 static int spitz_hw_params(struct snd_pcm_substream *substream,
120 struct snd_pcm_hw_params *params)
121 {
122 struct snd_soc_pcm_runtime *rtd = substream->private_data;
123 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
124 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
125 unsigned int clk = 0;
126 int ret = 0;
127
128 switch (params_rate(params)) {
129 case 8000:
130 case 16000:
131 case 48000:
132 case 96000:
133 clk = 12288000;
134 break;
135 case 11025:
136 case 22050:
137 case 44100:
138 clk = 11289600;
139 break;
140 }
141
142 /* set codec DAI configuration */
143 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
144 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
145 if (ret < 0)
146 return ret;
147
148 /* set cpu DAI configuration */
149 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
150 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
151 if (ret < 0)
152 return ret;
153
154 /* set the codec system clock for DAC and ADC */
155 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
156 SND_SOC_CLOCK_IN);
157 if (ret < 0)
158 return ret;
159
160 /* set the I2S system clock as input (unused) */
161 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
162 SND_SOC_CLOCK_IN);
163 if (ret < 0)
164 return ret;
165
166 return 0;
167 }
168
169 static struct snd_soc_ops spitz_ops = {
170 .startup = spitz_startup,
171 .hw_params = spitz_hw_params,
172 };
173
spitz_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)174 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
175 struct snd_ctl_elem_value *ucontrol)
176 {
177 ucontrol->value.integer.value[0] = spitz_jack_func;
178 return 0;
179 }
180
spitz_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)181 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
182 struct snd_ctl_elem_value *ucontrol)
183 {
184 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
185
186 if (spitz_jack_func == ucontrol->value.integer.value[0])
187 return 0;
188
189 spitz_jack_func = ucontrol->value.integer.value[0];
190 spitz_ext_control(codec);
191 return 1;
192 }
193
spitz_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)194 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
195 struct snd_ctl_elem_value *ucontrol)
196 {
197 ucontrol->value.integer.value[0] = spitz_spk_func;
198 return 0;
199 }
200
spitz_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)201 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
202 struct snd_ctl_elem_value *ucontrol)
203 {
204 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
205
206 if (spitz_spk_func == ucontrol->value.integer.value[0])
207 return 0;
208
209 spitz_spk_func = ucontrol->value.integer.value[0];
210 spitz_ext_control(codec);
211 return 1;
212 }
213
spitz_mic_bias(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)214 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
215 struct snd_kcontrol *k, int event)
216 {
217 if (machine_is_borzoi() || machine_is_spitz())
218 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
219 SND_SOC_DAPM_EVENT_ON(event));
220
221 if (machine_is_akita())
222 gpio_set_value(AKITA_GPIO_MIC_BIAS,
223 SND_SOC_DAPM_EVENT_ON(event));
224
225 return 0;
226 }
227
228 /* spitz machine dapm widgets */
229 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
230 SND_SOC_DAPM_HP("Headphone Jack", NULL),
231 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
232 SND_SOC_DAPM_SPK("Ext Spk", NULL),
233 SND_SOC_DAPM_LINE("Line Jack", NULL),
234
235 /* headset is a mic and mono headphone */
236 SND_SOC_DAPM_HP("Headset Jack", NULL),
237 };
238
239 /* Spitz machine audio_map */
240 static const struct snd_soc_dapm_route audio_map[] = {
241
242 /* headphone connected to LOUT1, ROUT1 */
243 {"Headphone Jack", NULL, "LOUT1"},
244 {"Headphone Jack", NULL, "ROUT1"},
245
246 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
247 {"Headset Jack", NULL, "ROUT1"},
248
249 /* ext speaker connected to LOUT2, ROUT2 */
250 {"Ext Spk", NULL , "ROUT2"},
251 {"Ext Spk", NULL , "LOUT2"},
252
253 /* mic is connected to input 1 - with bias */
254 {"LINPUT1", NULL, "Mic Bias"},
255 {"Mic Bias", NULL, "Mic Jack"},
256
257 /* line is connected to input 1 - no bias */
258 {"LINPUT1", NULL, "Line Jack"},
259 };
260
261 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
262 "Off"};
263 static const char *spk_function[] = {"On", "Off"};
264 static const struct soc_enum spitz_enum[] = {
265 SOC_ENUM_SINGLE_EXT(5, jack_function),
266 SOC_ENUM_SINGLE_EXT(2, spk_function),
267 };
268
269 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
270 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
271 spitz_set_jack),
272 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
273 spitz_set_spk),
274 };
275
276 /*
277 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
278 */
spitz_wm8750_init(struct snd_soc_codec * codec)279 static int spitz_wm8750_init(struct snd_soc_codec *codec)
280 {
281 int i, err;
282
283 /* NC codec pins */
284 snd_soc_dapm_nc_pin(codec, "RINPUT1");
285 snd_soc_dapm_nc_pin(codec, "LINPUT2");
286 snd_soc_dapm_nc_pin(codec, "RINPUT2");
287 snd_soc_dapm_nc_pin(codec, "LINPUT3");
288 snd_soc_dapm_nc_pin(codec, "RINPUT3");
289 snd_soc_dapm_nc_pin(codec, "OUT3");
290 snd_soc_dapm_nc_pin(codec, "MONO1");
291
292 /* Add spitz specific controls */
293 for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
294 err = snd_ctl_add(codec->card,
295 snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
296 if (err < 0)
297 return err;
298 }
299
300 /* Add spitz specific widgets */
301 snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
302 ARRAY_SIZE(wm8750_dapm_widgets));
303
304 /* Set up spitz specific audio paths */
305 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
306
307 snd_soc_dapm_sync(codec);
308 return 0;
309 }
310
311 /* spitz digital audio interface glue - connects codec <--> CPU */
312 static struct snd_soc_dai_link spitz_dai = {
313 .name = "wm8750",
314 .stream_name = "WM8750",
315 .cpu_dai = &pxa_i2s_dai,
316 .codec_dai = &wm8750_dai,
317 .init = spitz_wm8750_init,
318 .ops = &spitz_ops,
319 };
320
321 /* spitz audio machine driver */
322 static struct snd_soc_card snd_soc_spitz = {
323 .name = "Spitz",
324 .platform = &pxa2xx_soc_platform,
325 .dai_link = &spitz_dai,
326 .num_links = 1,
327 };
328
329 /* spitz audio private data */
330 static struct wm8750_setup_data spitz_wm8750_setup = {
331 .i2c_bus = 0,
332 .i2c_address = 0x1b,
333 };
334
335 /* spitz audio subsystem */
336 static struct snd_soc_device spitz_snd_devdata = {
337 .card = &snd_soc_spitz,
338 .codec_dev = &soc_codec_dev_wm8750,
339 .codec_data = &spitz_wm8750_setup,
340 };
341
342 static struct platform_device *spitz_snd_device;
343
spitz_init(void)344 static int __init spitz_init(void)
345 {
346 int ret;
347
348 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
349 return -ENODEV;
350
351 spitz_snd_device = platform_device_alloc("soc-audio", -1);
352 if (!spitz_snd_device)
353 return -ENOMEM;
354
355 platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
356 spitz_snd_devdata.dev = &spitz_snd_device->dev;
357 ret = platform_device_add(spitz_snd_device);
358
359 if (ret)
360 platform_device_put(spitz_snd_device);
361
362 return ret;
363 }
364
spitz_exit(void)365 static void __exit spitz_exit(void)
366 {
367 platform_device_unregister(spitz_snd_device);
368 }
369
370 module_init(spitz_init);
371 module_exit(spitz_exit);
372
373 MODULE_AUTHOR("Richard Purdie");
374 MODULE_DESCRIPTION("ALSA SoC Spitz");
375 MODULE_LICENSE("GPL");
376