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1957668b VK |
1 | /* |
2 | * h1940-uda1380.c -- ALSA Soc Audio Layer | |
3 | * | |
4 | * Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> | |
5 | * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com> | |
6 | * | |
7 | * Based on version from Arnaud Patard <arnaud.patard@rtp-net.org> | |
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 | ||
fd049755 | 16 | #include <linux/types.h> |
1957668b | 17 | #include <linux/gpio.h> |
da155d5b | 18 | #include <linux/module.h> |
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19 | |
20 | #include <sound/soc.h> | |
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21 | #include <sound/jack.h> |
22 | ||
5d229ce5 | 23 | #include "regs-iis.h" |
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24 | #include <asm/mach-types.h> |
25 | ||
abffae64 | 26 | #include <mach/gpio-samsung.h> |
1957668b | 27 | #include "s3c24xx-i2s.h" |
1957668b | 28 | |
de687fb1 | 29 | static const unsigned int rates[] = { |
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30 | 11025, |
31 | 22050, | |
32 | 44100, | |
33 | }; | |
34 | ||
de687fb1 | 35 | static const struct snd_pcm_hw_constraint_list hw_rates = { |
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36 | .count = ARRAY_SIZE(rates), |
37 | .list = rates, | |
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38 | }; |
39 | ||
40 | static struct snd_soc_jack hp_jack; | |
41 | ||
42 | static struct snd_soc_jack_pin hp_jack_pins[] = { | |
43 | { | |
44 | .pin = "Headphone Jack", | |
45 | .mask = SND_JACK_HEADPHONE, | |
46 | }, | |
47 | { | |
48 | .pin = "Speaker", | |
49 | .mask = SND_JACK_HEADPHONE, | |
50 | .invert = 1, | |
51 | }, | |
52 | }; | |
53 | ||
54 | static struct snd_soc_jack_gpio hp_jack_gpios[] = { | |
55 | { | |
56 | .gpio = S3C2410_GPG(4), | |
57 | .name = "hp-gpio", | |
58 | .report = SND_JACK_HEADPHONE, | |
59 | .invert = 1, | |
60 | .debounce_time = 200, | |
61 | }, | |
62 | }; | |
63 | ||
64 | static int h1940_startup(struct snd_pcm_substream *substream) | |
65 | { | |
66 | struct snd_pcm_runtime *runtime = substream->runtime; | |
67 | ||
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68 | return snd_pcm_hw_constraint_list(runtime, 0, |
69 | SNDRV_PCM_HW_PARAM_RATE, | |
70 | &hw_rates); | |
71 | } | |
72 | ||
73 | static int h1940_hw_params(struct snd_pcm_substream *substream, | |
74 | struct snd_pcm_hw_params *params) | |
75 | { | |
76 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
77 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
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78 | int div; |
79 | int ret; | |
80 | unsigned int rate = params_rate(params); | |
81 | ||
82 | switch (rate) { | |
83 | case 11025: | |
84 | case 22050: | |
85 | case 44100: | |
86 | div = s3c24xx_i2s_get_clockrate() / (384 * rate); | |
87 | if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate)) | |
88 | div++; | |
89 | break; | |
90 | default: | |
2046d453 | 91 | dev_err(rtd->dev, "%s: rate %d is not supported\n", |
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92 | __func__, rate); |
93 | return -EINVAL; | |
94 | } | |
95 | ||
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96 | /* select clock source */ |
97 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate, | |
98 | SND_SOC_CLOCK_OUT); | |
99 | if (ret < 0) | |
100 | return ret; | |
101 | ||
102 | /* set MCLK division for sample rate */ | |
103 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, | |
104 | S3C2410_IISMOD_384FS); | |
105 | if (ret < 0) | |
106 | return ret; | |
107 | ||
108 | /* set BCLK division for sample rate */ | |
109 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, | |
110 | S3C2410_IISMOD_32FS); | |
111 | if (ret < 0) | |
112 | return ret; | |
113 | ||
114 | /* set prescaler division for sample rate */ | |
115 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, | |
116 | S3C24XX_PRESCALE(div, div)); | |
117 | if (ret < 0) | |
118 | return ret; | |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
123 | static struct snd_soc_ops h1940_ops = { | |
124 | .startup = h1940_startup, | |
125 | .hw_params = h1940_hw_params, | |
126 | }; | |
127 | ||
128 | static int h1940_spk_power(struct snd_soc_dapm_widget *w, | |
129 | struct snd_kcontrol *kcontrol, int event) | |
130 | { | |
131 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
232910d6 | 132 | gpio_set_value(S3C_GPIO_END + 9, 1); |
1957668b | 133 | else |
232910d6 | 134 | gpio_set_value(S3C_GPIO_END + 9, 0); |
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135 | |
136 | return 0; | |
137 | } | |
138 | ||
139 | /* h1940 machine dapm widgets */ | |
140 | static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { | |
141 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
142 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
143 | SND_SOC_DAPM_SPK("Speaker", h1940_spk_power), | |
144 | }; | |
145 | ||
146 | /* h1940 machine audio_map */ | |
147 | static const struct snd_soc_dapm_route audio_map[] = { | |
148 | /* headphone connected to VOUTLHP, VOUTRHP */ | |
149 | {"Headphone Jack", NULL, "VOUTLHP"}, | |
150 | {"Headphone Jack", NULL, "VOUTRHP"}, | |
151 | ||
152 | /* ext speaker connected to VOUTL, VOUTR */ | |
153 | {"Speaker", NULL, "VOUTL"}, | |
154 | {"Speaker", NULL, "VOUTR"}, | |
155 | ||
156 | /* mic is connected to VINM */ | |
157 | {"VINM", NULL, "Mic Jack"}, | |
158 | }; | |
159 | ||
160 | static struct platform_device *s3c24xx_snd_device; | |
161 | ||
162 | static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd) | |
163 | { | |
dfe11f28 LPC |
164 | snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE, |
165 | &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); | |
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166 | |
167 | snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
168 | hp_jack_gpios); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | /* s3c24xx digital audio interface glue - connects codec <--> CPU */ | |
174 | static struct snd_soc_dai_link h1940_uda1380_dai[] = { | |
175 | { | |
176 | .name = "uda1380", | |
177 | .stream_name = "UDA1380 Duplex", | |
178 | .cpu_dai_name = "s3c24xx-iis", | |
179 | .codec_dai_name = "uda1380-hifi", | |
180 | .init = h1940_uda1380_init, | |
a08485d8 | 181 | .platform_name = "s3c24xx-iis", |
1957668b | 182 | .codec_name = "uda1380-codec.0-001a", |
5cc10b9b LPC |
183 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
184 | SND_SOC_DAIFMT_CBS_CFS, | |
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185 | .ops = &h1940_ops, |
186 | }, | |
187 | }; | |
188 | ||
189 | static struct snd_soc_card h1940_asoc = { | |
190 | .name = "h1940", | |
095d79dc | 191 | .owner = THIS_MODULE, |
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192 | .dai_link = h1940_uda1380_dai, |
193 | .num_links = ARRAY_SIZE(h1940_uda1380_dai), | |
6119d016 MB |
194 | |
195 | .dapm_widgets = uda1380_dapm_widgets, | |
196 | .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), | |
197 | .dapm_routes = audio_map, | |
198 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
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199 | }; |
200 | ||
201 | static int __init h1940_init(void) | |
202 | { | |
203 | int ret; | |
204 | ||
205 | if (!machine_is_h1940()) | |
206 | return -ENODEV; | |
207 | ||
208 | /* configure some gpios */ | |
232910d6 | 209 | ret = gpio_request(S3C_GPIO_END + 9, "speaker-power"); |
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210 | if (ret) |
211 | goto err_out; | |
212 | ||
232910d6 | 213 | ret = gpio_direction_output(S3C_GPIO_END + 9, 0); |
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214 | if (ret) |
215 | goto err_gpio; | |
216 | ||
217 | s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); | |
218 | if (!s3c24xx_snd_device) { | |
219 | ret = -ENOMEM; | |
220 | goto err_gpio; | |
221 | } | |
222 | ||
223 | platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc); | |
224 | ret = platform_device_add(s3c24xx_snd_device); | |
225 | ||
226 | if (ret) | |
227 | goto err_plat; | |
228 | ||
229 | return 0; | |
230 | ||
231 | err_plat: | |
232 | platform_device_put(s3c24xx_snd_device); | |
233 | err_gpio: | |
232910d6 | 234 | gpio_free(S3C_GPIO_END + 9); |
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235 | |
236 | err_out: | |
237 | return ret; | |
238 | } | |
239 | ||
240 | static void __exit h1940_exit(void) | |
241 | { | |
242 | platform_device_unregister(s3c24xx_snd_device); | |
232910d6 | 243 | gpio_free(S3C_GPIO_END + 9); |
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244 | } |
245 | ||
246 | module_init(h1940_init); | |
247 | module_exit(h1940_exit); | |
248 | ||
249 | /* Module information */ | |
250 | MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick"); | |
251 | MODULE_DESCRIPTION("ALSA SoC H1940"); | |
252 | MODULE_LICENSE("GPL"); |