blob: dd20ca7f46814e3458860931910d18a39bc4508f [file] [log] [blame]
Maurus Cuelenaerece93a372010-07-03 02:46:12 +02001/* sound/soc/s3c24xx/smartq_wm8987.c
2 *
3 * Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
4 *
5 * Based on smdk6410_wm8987.c
6 * Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
7 * Graeme Gregory - graeme.gregory@wolfsonmicro.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 */
15
16#include <linux/module.h>
17#include <linux/platform_device.h>
18#include <linux/gpio.h>
19
20#include <sound/pcm.h>
21#include <sound/pcm_params.h>
22#include <sound/soc-dapm.h>
23#include <sound/jack.h>
24
25#include <asm/mach-types.h>
26
27#include "s3c-dma.h"
28#include "s3c64xx-i2s.h"
29
30#include "../codecs/wm8750.h"
31
32/*
33 * WM8987 is register compatible with WM8750, so using that as base driver.
34 */
35
36static struct snd_soc_card snd_soc_smartq;
37
38static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
39 struct snd_pcm_hw_params *params)
40{
41 struct snd_soc_pcm_runtime *rtd = substream->private_data;
42 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
43 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
44 struct s3c_i2sv2_rate_calc div;
45 unsigned int clk = 0;
46 int ret;
47
48 s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
49 s3c_i2sv2_get_clock(cpu_dai));
50
51 switch (params_rate(params)) {
52 case 8000:
53 case 16000:
54 case 32000:
55 case 48000:
56 case 96000:
57 clk = 12288000;
58 break;
59 case 11025:
60 case 22050:
61 case 44100:
62 case 88200:
63 clk = 11289600;
64 break;
65 }
66
67 /* set codec DAI configuration */
68 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
69 SND_SOC_DAIFMT_NB_NF |
70 SND_SOC_DAIFMT_CBS_CFS);
71 if (ret < 0)
72 return ret;
73
74 /* set cpu DAI configuration */
75 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
76 SND_SOC_DAIFMT_NB_NF |
77 SND_SOC_DAIFMT_CBS_CFS);
78 if (ret < 0)
79 return ret;
80
81 /* set the codec system clock for DAC and ADC */
82 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
83 SND_SOC_CLOCK_IN);
84 if (ret < 0)
85 return ret;
86
87 /* set MCLK division for sample rate */
88 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, div.fs_div);
89 if (ret < 0)
90 return ret;
91
92 /* set prescaler division for sample rate */
93 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_PRESCALER,
94 div.clk_div - 1);
95 if (ret < 0)
96 return ret;
97
98 return 0;
99}
100
101/*
102 * SmartQ WM8987 HiFi DAI operations.
103 */
104static struct snd_soc_ops smartq_hifi_ops = {
105 .hw_params = smartq_hifi_hw_params,
106};
107
108static struct snd_soc_jack smartq_jack;
109
110static struct snd_soc_jack_pin smartq_jack_pins[] = {
111 /* Disable speaker when headphone is plugged in */
112 {
113 .pin = "Internal Speaker",
114 .mask = SND_JACK_HEADPHONE,
Maurus Cuelenaerece93a372010-07-03 02:46:12 +0200115 },
116};
117
118static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
119 {
120 .gpio = S3C64XX_GPL(12),
121 .name = "headphone detect",
122 .report = SND_JACK_HEADPHONE,
123 .debounce_time = 200,
124 },
125};
126
127static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
128 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
129 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
130 SOC_DAPM_PIN_SWITCH("Internal Mic"),
131};
132
133static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
134 struct snd_kcontrol *k,
135 int event)
136{
137 gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
138
139 return 0;
140}
141
142static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
143 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
144 SND_SOC_DAPM_HP("Headphone Jack", NULL),
145 SND_SOC_DAPM_MIC("Internal Mic", NULL),
146};
147
148static const struct snd_soc_dapm_route audio_map[] = {
149 {"Headphone Jack", NULL, "LOUT2"},
150 {"Headphone Jack", NULL, "ROUT2"},
151
152 {"Internal Speaker", NULL, "LOUT2"},
153 {"Internal Speaker", NULL, "ROUT2"},
154
155 {"Mic Bias", NULL, "Internal Mic"},
156 {"LINPUT2", NULL, "Mic Bias"},
157};
158
159static int smartq_wm8987_init(struct snd_soc_codec *codec)
160{
161 int err = 0;
162
163 /* Add SmartQ specific widgets */
164 snd_soc_dapm_new_controls(codec, wm8987_dapm_widgets,
165 ARRAY_SIZE(wm8987_dapm_widgets));
166
167 /* add SmartQ specific controls */
168 err = snd_soc_add_controls(codec, wm8987_smartq_controls,
169 ARRAY_SIZE(wm8987_smartq_controls));
170
171 if (err < 0)
172 return err;
173
174 /* setup SmartQ specific audio path */
175 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
176
177 /* set endpoints to not connected */
178 snd_soc_dapm_nc_pin(codec, "LINPUT1");
179 snd_soc_dapm_nc_pin(codec, "RINPUT1");
180 snd_soc_dapm_nc_pin(codec, "OUT3");
181 snd_soc_dapm_nc_pin(codec, "ROUT1");
182
183 /* set endpoints to default off mode */
184 snd_soc_dapm_enable_pin(codec, "Internal Speaker");
185 snd_soc_dapm_enable_pin(codec, "Internal Mic");
186 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
187
188 err = snd_soc_dapm_sync(codec);
189 if (err)
190 return err;
191
192 /* Headphone jack detection */
193 err = snd_soc_jack_new(&snd_soc_smartq, "Headphone Jack",
194 SND_JACK_HEADPHONE, &smartq_jack);
195 if (err)
196 return err;
197
198 err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
199 smartq_jack_pins);
200 if (err)
201 return err;
202
203 err = snd_soc_jack_add_gpios(&smartq_jack,
204 ARRAY_SIZE(smartq_jack_gpios),
205 smartq_jack_gpios);
206
207 return err;
208}
209
210static struct snd_soc_dai_link smartq_dai[] = {
211 {
212 .name = "wm8987",
213 .stream_name = "SmartQ Hi-Fi",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000214 .cpu_dai_name = "s3c64xx-i2s.0",
215 .codec_dai_name = "wm8750-hifi",
216 .platform_name = "s3c24xx-pcm-audio",
217 .codec_name = "wm8750-codec.0-0x1a",
Maurus Cuelenaerece93a372010-07-03 02:46:12 +0200218 .init = smartq_wm8987_init,
219 .ops = &smartq_hifi_ops,
220 },
221};
222
223static struct snd_soc_card snd_soc_smartq = {
224 .name = "SmartQ",
Maurus Cuelenaerece93a372010-07-03 02:46:12 +0200225 .dai_link = smartq_dai,
226 .num_links = ARRAY_SIZE(smartq_dai),
227};
228
Maurus Cuelenaerece93a372010-07-03 02:46:12 +0200229static struct platform_device *smartq_snd_device;
230
231static int __init smartq_init(void)
232{
233 int ret;
234
235 if (!machine_is_smartq7() && !machine_is_smartq5()) {
236 pr_info("Only SmartQ is supported by this ASoC driver\n");
237 return -ENODEV;
238 }
239
240 smartq_snd_device = platform_device_alloc("soc-audio", -1);
241 if (!smartq_snd_device)
242 return -ENOMEM;
243
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000244 platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
Maurus Cuelenaerece93a372010-07-03 02:46:12 +0200245
246 ret = platform_device_add(smartq_snd_device);
247 if (ret) {
248 platform_device_put(smartq_snd_device);
249 return ret;
250 }
251
252 /* Initialise GPIOs used by amplifiers */
253 ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
254 if (ret) {
255 dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
256 goto err_unregister_device;
257 }
258
259 /* Disable amplifiers */
260 ret = gpio_direction_output(S3C64XX_GPK(12), 1);
261 if (ret) {
262 dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
263 goto err_free_gpio_amp_shut;
264 }
265
266 return 0;
267
268err_free_gpio_amp_shut:
269 gpio_free(S3C64XX_GPK(12));
270err_unregister_device:
271 platform_device_unregister(smartq_snd_device);
272
273 return ret;
274}
275
276static void __exit smartq_exit(void)
277{
278 snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
279 smartq_jack_gpios);
280
281 platform_device_unregister(smartq_snd_device);
282}
283
284module_init(smartq_init);
285module_exit(smartq_exit);
286
287/* Module information */
288MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
289MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
290MODULE_LICENSE("GPL");