1 /* sound/soc/samsung/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/gpio.h>
17 #include <linux/module.h>
18
19 #include <sound/soc.h>
20 #include <sound/jack.h>
21
22 #include <asm/mach-types.h>
23
24 #include "i2s.h"
25 #include "../codecs/wm8750.h"
26
27 /*
28 * WM8987 is register compatible with WM8750, so using that as base driver.
29 */
30
31 static struct snd_soc_card snd_soc_smartq;
32
smartq_hifi_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)33 static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
34 struct snd_pcm_hw_params *params)
35 {
36 struct snd_soc_pcm_runtime *rtd = substream->private_data;
37 struct snd_soc_dai *codec_dai = rtd->codec_dai;
38 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
39 unsigned int clk = 0;
40 int ret;
41
42 switch (params_rate(params)) {
43 case 8000:
44 case 16000:
45 case 32000:
46 case 48000:
47 case 96000:
48 clk = 12288000;
49 break;
50 case 11025:
51 case 22050:
52 case 44100:
53 case 88200:
54 clk = 11289600;
55 break;
56 }
57
58 /* set codec DAI configuration */
59 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
60 SND_SOC_DAIFMT_NB_NF |
61 SND_SOC_DAIFMT_CBS_CFS);
62 if (ret < 0)
63 return ret;
64
65 /* set cpu DAI configuration */
66 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
67 SND_SOC_DAIFMT_NB_NF |
68 SND_SOC_DAIFMT_CBS_CFS);
69 if (ret < 0)
70 return ret;
71
72 /* Use PCLK for I2S signal generation */
73 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
74 0, SND_SOC_CLOCK_IN);
75 if (ret < 0)
76 return ret;
77
78 /* Gate the RCLK output on PAD */
79 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
80 0, SND_SOC_CLOCK_IN);
81 if (ret < 0)
82 return ret;
83
84 /* set the codec system clock for DAC and ADC */
85 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
86 SND_SOC_CLOCK_IN);
87 if (ret < 0)
88 return ret;
89
90 return 0;
91 }
92
93 /*
94 * SmartQ WM8987 HiFi DAI operations.
95 */
96 static struct snd_soc_ops smartq_hifi_ops = {
97 .hw_params = smartq_hifi_hw_params,
98 };
99
100 static struct snd_soc_jack smartq_jack;
101
102 static struct snd_soc_jack_pin smartq_jack_pins[] = {
103 /* Disable speaker when headphone is plugged in */
104 {
105 .pin = "Internal Speaker",
106 .mask = SND_JACK_HEADPHONE,
107 },
108 };
109
110 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
111 {
112 .gpio = S3C64XX_GPL(12),
113 .name = "headphone detect",
114 .report = SND_JACK_HEADPHONE,
115 .debounce_time = 200,
116 },
117 };
118
119 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
120 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
121 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
122 SOC_DAPM_PIN_SWITCH("Internal Mic"),
123 };
124
smartq_speaker_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)125 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
126 struct snd_kcontrol *k,
127 int event)
128 {
129 gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
130
131 return 0;
132 }
133
134 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
135 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
136 SND_SOC_DAPM_HP("Headphone Jack", NULL),
137 SND_SOC_DAPM_MIC("Internal Mic", NULL),
138 };
139
140 static const struct snd_soc_dapm_route audio_map[] = {
141 {"Headphone Jack", NULL, "LOUT2"},
142 {"Headphone Jack", NULL, "ROUT2"},
143
144 {"Internal Speaker", NULL, "LOUT2"},
145 {"Internal Speaker", NULL, "ROUT2"},
146
147 {"Mic Bias", NULL, "Internal Mic"},
148 {"LINPUT2", NULL, "Mic Bias"},
149 };
150
smartq_wm8987_init(struct snd_soc_pcm_runtime * rtd)151 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
152 {
153 struct snd_soc_codec *codec = rtd->codec;
154 struct snd_soc_dapm_context *dapm = &codec->dapm;
155 int err = 0;
156
157 /* set endpoints to not connected */
158 snd_soc_dapm_nc_pin(dapm, "LINPUT1");
159 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
160 snd_soc_dapm_nc_pin(dapm, "OUT3");
161 snd_soc_dapm_nc_pin(dapm, "ROUT1");
162
163 /* set endpoints to default off mode */
164 snd_soc_dapm_enable_pin(dapm, "Internal Speaker");
165 snd_soc_dapm_enable_pin(dapm, "Internal Mic");
166 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
167
168 /* Headphone jack detection */
169 err = snd_soc_jack_new(codec, "Headphone Jack",
170 SND_JACK_HEADPHONE, &smartq_jack);
171 if (err)
172 return err;
173
174 err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
175 smartq_jack_pins);
176 if (err)
177 return err;
178
179 err = snd_soc_jack_add_gpios(&smartq_jack,
180 ARRAY_SIZE(smartq_jack_gpios),
181 smartq_jack_gpios);
182
183 return err;
184 }
185
186 static struct snd_soc_dai_link smartq_dai[] = {
187 {
188 .name = "wm8987",
189 .stream_name = "SmartQ Hi-Fi",
190 .cpu_dai_name = "samsung-i2s.0",
191 .codec_dai_name = "wm8750-hifi",
192 .platform_name = "samsung-i2s.0",
193 .codec_name = "wm8750.0-0x1a",
194 .init = smartq_wm8987_init,
195 .ops = &smartq_hifi_ops,
196 },
197 };
198
199 static struct snd_soc_card snd_soc_smartq = {
200 .name = "SmartQ",
201 .owner = THIS_MODULE,
202 .dai_link = smartq_dai,
203 .num_links = ARRAY_SIZE(smartq_dai),
204
205 .dapm_widgets = wm8987_dapm_widgets,
206 .num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets),
207 .dapm_routes = audio_map,
208 .num_dapm_routes = ARRAY_SIZE(audio_map),
209 .controls = wm8987_smartq_controls,
210 .num_controls = ARRAY_SIZE(wm8987_smartq_controls),
211 };
212
213 static struct platform_device *smartq_snd_device;
214
smartq_init(void)215 static int __init smartq_init(void)
216 {
217 int ret;
218
219 if (!machine_is_smartq7() && !machine_is_smartq5()) {
220 pr_info("Only SmartQ is supported by this ASoC driver\n");
221 return -ENODEV;
222 }
223
224 smartq_snd_device = platform_device_alloc("soc-audio", -1);
225 if (!smartq_snd_device)
226 return -ENOMEM;
227
228 platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
229
230 ret = platform_device_add(smartq_snd_device);
231 if (ret) {
232 platform_device_put(smartq_snd_device);
233 return ret;
234 }
235
236 /* Initialise GPIOs used by amplifiers */
237 ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
238 if (ret) {
239 dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
240 goto err_unregister_device;
241 }
242
243 /* Disable amplifiers */
244 ret = gpio_direction_output(S3C64XX_GPK(12), 1);
245 if (ret) {
246 dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
247 goto err_free_gpio_amp_shut;
248 }
249
250 return 0;
251
252 err_free_gpio_amp_shut:
253 gpio_free(S3C64XX_GPK(12));
254 err_unregister_device:
255 platform_device_unregister(smartq_snd_device);
256
257 return ret;
258 }
259
smartq_exit(void)260 static void __exit smartq_exit(void)
261 {
262 gpio_free(S3C64XX_GPK(12));
263 snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
264 smartq_jack_gpios);
265
266 platform_device_unregister(smartq_snd_device);
267 }
268
269 module_init(smartq_init);
270 module_exit(smartq_exit);
271
272 /* Module information */
273 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
274 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
275 MODULE_LICENSE("GPL");
276