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 <mach/gpio-samsung.h>
23 #include <asm/mach-types.h>
24
25 #include "i2s.h"
26 #include "../codecs/wm8750.h"
27
28 /*
29 * WM8987 is register compatible with WM8750, so using that as base driver.
30 */
31
32 static struct snd_soc_card snd_soc_smartq;
33
smartq_hifi_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)34 static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
35 struct snd_pcm_hw_params *params)
36 {
37 struct snd_soc_pcm_runtime *rtd = substream->private_data;
38 struct snd_soc_dai *codec_dai = rtd->codec_dai;
39 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
40 unsigned int clk = 0;
41 int ret;
42
43 switch (params_rate(params)) {
44 case 8000:
45 case 16000:
46 case 32000:
47 case 48000:
48 case 96000:
49 clk = 12288000;
50 break;
51 case 11025:
52 case 22050:
53 case 44100:
54 case 88200:
55 clk = 11289600;
56 break;
57 }
58
59 /* Use PCLK for I2S signal generation */
60 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
61 0, SND_SOC_CLOCK_IN);
62 if (ret < 0)
63 return ret;
64
65 /* Gate the RCLK output on PAD */
66 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
67 0, SND_SOC_CLOCK_IN);
68 if (ret < 0)
69 return ret;
70
71 /* set the codec system clock for DAC and ADC */
72 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
73 SND_SOC_CLOCK_IN);
74 if (ret < 0)
75 return ret;
76
77 return 0;
78 }
79
80 /*
81 * SmartQ WM8987 HiFi DAI operations.
82 */
83 static struct snd_soc_ops smartq_hifi_ops = {
84 .hw_params = smartq_hifi_hw_params,
85 };
86
87 static struct snd_soc_jack smartq_jack;
88
89 static struct snd_soc_jack_pin smartq_jack_pins[] = {
90 /* Disable speaker when headphone is plugged in */
91 {
92 .pin = "Internal Speaker",
93 .mask = SND_JACK_HEADPHONE,
94 },
95 };
96
97 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
98 {
99 .gpio = S3C64XX_GPL(12),
100 .name = "headphone detect",
101 .report = SND_JACK_HEADPHONE,
102 .debounce_time = 200,
103 },
104 };
105
106 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
107 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
108 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
109 SOC_DAPM_PIN_SWITCH("Internal Mic"),
110 };
111
smartq_speaker_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)112 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
113 struct snd_kcontrol *k,
114 int event)
115 {
116 gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
117
118 return 0;
119 }
120
121 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
122 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
123 SND_SOC_DAPM_HP("Headphone Jack", NULL),
124 SND_SOC_DAPM_MIC("Internal Mic", NULL),
125 };
126
127 static const struct snd_soc_dapm_route audio_map[] = {
128 {"Headphone Jack", NULL, "LOUT2"},
129 {"Headphone Jack", NULL, "ROUT2"},
130
131 {"Internal Speaker", NULL, "LOUT2"},
132 {"Internal Speaker", NULL, "ROUT2"},
133
134 {"Mic Bias", NULL, "Internal Mic"},
135 {"LINPUT2", NULL, "Mic Bias"},
136 };
137
smartq_wm8987_init(struct snd_soc_pcm_runtime * rtd)138 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
139 {
140 struct snd_soc_codec *codec = rtd->codec;
141 struct snd_soc_dapm_context *dapm = &codec->dapm;
142 int err = 0;
143
144 /* set endpoints to not connected */
145 snd_soc_dapm_nc_pin(dapm, "LINPUT1");
146 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
147 snd_soc_dapm_nc_pin(dapm, "OUT3");
148 snd_soc_dapm_nc_pin(dapm, "ROUT1");
149
150 /* set endpoints to default off mode */
151 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
152
153 /* Headphone jack detection */
154 err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
155 SND_JACK_HEADPHONE, &smartq_jack,
156 smartq_jack_pins,
157 ARRAY_SIZE(smartq_jack_pins));
158 if (err)
159 return err;
160
161 err = snd_soc_jack_add_gpios(&smartq_jack,
162 ARRAY_SIZE(smartq_jack_gpios),
163 smartq_jack_gpios);
164
165 return err;
166 }
167
smartq_wm8987_card_remove(struct snd_soc_card * card)168 static int smartq_wm8987_card_remove(struct snd_soc_card *card)
169 {
170 snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
171 smartq_jack_gpios);
172
173 return 0;
174 }
175
176 static struct snd_soc_dai_link smartq_dai[] = {
177 {
178 .name = "wm8987",
179 .stream_name = "SmartQ Hi-Fi",
180 .cpu_dai_name = "samsung-i2s.0",
181 .codec_dai_name = "wm8750-hifi",
182 .platform_name = "samsung-i2s.0",
183 .codec_name = "wm8750.0-0x1a",
184 .init = smartq_wm8987_init,
185 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
186 SND_SOC_DAIFMT_CBS_CFS,
187 .ops = &smartq_hifi_ops,
188 },
189 };
190
191 static struct snd_soc_card snd_soc_smartq = {
192 .name = "SmartQ",
193 .owner = THIS_MODULE,
194 .remove = smartq_wm8987_card_remove,
195 .dai_link = smartq_dai,
196 .num_links = ARRAY_SIZE(smartq_dai),
197
198 .dapm_widgets = wm8987_dapm_widgets,
199 .num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets),
200 .dapm_routes = audio_map,
201 .num_dapm_routes = ARRAY_SIZE(audio_map),
202 .controls = wm8987_smartq_controls,
203 .num_controls = ARRAY_SIZE(wm8987_smartq_controls),
204 };
205
206 static struct platform_device *smartq_snd_device;
207
smartq_init(void)208 static int __init smartq_init(void)
209 {
210 int ret;
211
212 if (!machine_is_smartq7() && !machine_is_smartq5()) {
213 pr_info("Only SmartQ is supported by this ASoC driver\n");
214 return -ENODEV;
215 }
216
217 smartq_snd_device = platform_device_alloc("soc-audio", -1);
218 if (!smartq_snd_device)
219 return -ENOMEM;
220
221 platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
222
223 ret = platform_device_add(smartq_snd_device);
224 if (ret) {
225 platform_device_put(smartq_snd_device);
226 return ret;
227 }
228
229 /* Initialise GPIOs used by amplifiers */
230 ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
231 if (ret) {
232 dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
233 goto err_unregister_device;
234 }
235
236 /* Disable amplifiers */
237 ret = gpio_direction_output(S3C64XX_GPK(12), 1);
238 if (ret) {
239 dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
240 goto err_free_gpio_amp_shut;
241 }
242
243 return 0;
244
245 err_free_gpio_amp_shut:
246 gpio_free(S3C64XX_GPK(12));
247 err_unregister_device:
248 platform_device_unregister(smartq_snd_device);
249
250 return ret;
251 }
252
smartq_exit(void)253 static void __exit smartq_exit(void)
254 {
255 gpio_free(S3C64XX_GPK(12));
256
257 platform_device_unregister(smartq_snd_device);
258 }
259
260 module_init(smartq_init);
261 module_exit(smartq_exit);
262
263 /* Module information */
264 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
265 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
266 MODULE_LICENSE("GPL");
267