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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 | ||
23 | #include <plat/regs-iis.h> | |
1957668b | 24 | #include <mach/h1940-latch.h> |
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25 | #include <asm/mach-types.h> |
26 | ||
1957668b | 27 | #include "s3c24xx-i2s.h" |
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28 | |
29 | static unsigned int rates[] = { | |
30 | 11025, | |
31 | 22050, | |
32 | 44100, | |
33 | }; | |
34 | ||
35 | static struct snd_pcm_hw_constraint_list hw_rates = { | |
36 | .count = ARRAY_SIZE(rates), | |
37 | .list = rates, | |
38 | .mask = 0, | |
39 | }; | |
40 | ||
41 | static struct snd_soc_jack hp_jack; | |
42 | ||
43 | static struct snd_soc_jack_pin hp_jack_pins[] = { | |
44 | { | |
45 | .pin = "Headphone Jack", | |
46 | .mask = SND_JACK_HEADPHONE, | |
47 | }, | |
48 | { | |
49 | .pin = "Speaker", | |
50 | .mask = SND_JACK_HEADPHONE, | |
51 | .invert = 1, | |
52 | }, | |
53 | }; | |
54 | ||
55 | static struct snd_soc_jack_gpio hp_jack_gpios[] = { | |
56 | { | |
57 | .gpio = S3C2410_GPG(4), | |
58 | .name = "hp-gpio", | |
59 | .report = SND_JACK_HEADPHONE, | |
60 | .invert = 1, | |
61 | .debounce_time = 200, | |
62 | }, | |
63 | }; | |
64 | ||
65 | static int h1940_startup(struct snd_pcm_substream *substream) | |
66 | { | |
67 | struct snd_pcm_runtime *runtime = substream->runtime; | |
68 | ||
69 | runtime->hw.rate_min = hw_rates.list[0]; | |
70 | runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1]; | |
71 | runtime->hw.rates = SNDRV_PCM_RATE_KNOT; | |
72 | ||
73 | return snd_pcm_hw_constraint_list(runtime, 0, | |
74 | SNDRV_PCM_HW_PARAM_RATE, | |
75 | &hw_rates); | |
76 | } | |
77 | ||
78 | static int h1940_hw_params(struct snd_pcm_substream *substream, | |
79 | struct snd_pcm_hw_params *params) | |
80 | { | |
81 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
82 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
83 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
84 | int div; | |
85 | int ret; | |
86 | unsigned int rate = params_rate(params); | |
87 | ||
88 | switch (rate) { | |
89 | case 11025: | |
90 | case 22050: | |
91 | case 44100: | |
92 | div = s3c24xx_i2s_get_clockrate() / (384 * rate); | |
93 | if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate)) | |
94 | div++; | |
95 | break; | |
96 | default: | |
97 | dev_err(&rtd->dev, "%s: rate %d is not supported\n", | |
98 | __func__, rate); | |
99 | return -EINVAL; | |
100 | } | |
101 | ||
102 | /* set codec DAI configuration */ | |
103 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
104 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
105 | if (ret < 0) | |
106 | return ret; | |
107 | ||
108 | /* set cpu DAI configuration */ | |
109 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
110 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
111 | if (ret < 0) | |
112 | return ret; | |
113 | ||
114 | /* select clock source */ | |
115 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate, | |
116 | SND_SOC_CLOCK_OUT); | |
117 | if (ret < 0) | |
118 | return ret; | |
119 | ||
120 | /* set MCLK division for sample rate */ | |
121 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, | |
122 | S3C2410_IISMOD_384FS); | |
123 | if (ret < 0) | |
124 | return ret; | |
125 | ||
126 | /* set BCLK division for sample rate */ | |
127 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, | |
128 | S3C2410_IISMOD_32FS); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
132 | /* set prescaler division for sample rate */ | |
133 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, | |
134 | S3C24XX_PRESCALE(div, div)); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static struct snd_soc_ops h1940_ops = { | |
142 | .startup = h1940_startup, | |
143 | .hw_params = h1940_hw_params, | |
144 | }; | |
145 | ||
146 | static int h1940_spk_power(struct snd_soc_dapm_widget *w, | |
147 | struct snd_kcontrol *kcontrol, int event) | |
148 | { | |
149 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
150 | gpio_set_value(H1940_LATCH_AUDIO_POWER, 1); | |
151 | else | |
152 | gpio_set_value(H1940_LATCH_AUDIO_POWER, 0); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | /* h1940 machine dapm widgets */ | |
158 | static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { | |
159 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
160 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
161 | SND_SOC_DAPM_SPK("Speaker", h1940_spk_power), | |
162 | }; | |
163 | ||
164 | /* h1940 machine audio_map */ | |
165 | static const struct snd_soc_dapm_route audio_map[] = { | |
166 | /* headphone connected to VOUTLHP, VOUTRHP */ | |
167 | {"Headphone Jack", NULL, "VOUTLHP"}, | |
168 | {"Headphone Jack", NULL, "VOUTRHP"}, | |
169 | ||
170 | /* ext speaker connected to VOUTL, VOUTR */ | |
171 | {"Speaker", NULL, "VOUTL"}, | |
172 | {"Speaker", NULL, "VOUTR"}, | |
173 | ||
174 | /* mic is connected to VINM */ | |
175 | {"VINM", NULL, "Mic Jack"}, | |
176 | }; | |
177 | ||
178 | static struct platform_device *s3c24xx_snd_device; | |
179 | ||
180 | static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd) | |
181 | { | |
182 | struct snd_soc_codec *codec = rtd->codec; | |
183 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
184 | int err; | |
185 | ||
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186 | snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); |
187 | snd_soc_dapm_enable_pin(dapm, "Speaker"); | |
188 | snd_soc_dapm_enable_pin(dapm, "Mic Jack"); | |
189 | ||
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190 | snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, |
191 | &hp_jack); | |
192 | ||
193 | snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins), | |
194 | hp_jack_pins); | |
195 | ||
196 | snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
197 | hp_jack_gpios); | |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
202 | /* s3c24xx digital audio interface glue - connects codec <--> CPU */ | |
203 | static struct snd_soc_dai_link h1940_uda1380_dai[] = { | |
204 | { | |
205 | .name = "uda1380", | |
206 | .stream_name = "UDA1380 Duplex", | |
207 | .cpu_dai_name = "s3c24xx-iis", | |
208 | .codec_dai_name = "uda1380-hifi", | |
209 | .init = h1940_uda1380_init, | |
210 | .platform_name = "samsung-audio", | |
211 | .codec_name = "uda1380-codec.0-001a", | |
212 | .ops = &h1940_ops, | |
213 | }, | |
214 | }; | |
215 | ||
216 | static struct snd_soc_card h1940_asoc = { | |
217 | .name = "h1940", | |
095d79dc | 218 | .owner = THIS_MODULE, |
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219 | .dai_link = h1940_uda1380_dai, |
220 | .num_links = ARRAY_SIZE(h1940_uda1380_dai), | |
6119d016 MB |
221 | |
222 | .dapm_widgets = uda1380_dapm_widgets, | |
223 | .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), | |
224 | .dapm_routes = audio_map, | |
225 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
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226 | }; |
227 | ||
228 | static int __init h1940_init(void) | |
229 | { | |
230 | int ret; | |
231 | ||
232 | if (!machine_is_h1940()) | |
233 | return -ENODEV; | |
234 | ||
235 | /* configure some gpios */ | |
236 | ret = gpio_request(H1940_LATCH_AUDIO_POWER, "speaker-power"); | |
237 | if (ret) | |
238 | goto err_out; | |
239 | ||
240 | ret = gpio_direction_output(H1940_LATCH_AUDIO_POWER, 0); | |
241 | if (ret) | |
242 | goto err_gpio; | |
243 | ||
244 | s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); | |
245 | if (!s3c24xx_snd_device) { | |
246 | ret = -ENOMEM; | |
247 | goto err_gpio; | |
248 | } | |
249 | ||
250 | platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc); | |
251 | ret = platform_device_add(s3c24xx_snd_device); | |
252 | ||
253 | if (ret) | |
254 | goto err_plat; | |
255 | ||
256 | return 0; | |
257 | ||
258 | err_plat: | |
259 | platform_device_put(s3c24xx_snd_device); | |
260 | err_gpio: | |
261 | gpio_free(H1940_LATCH_AUDIO_POWER); | |
262 | ||
263 | err_out: | |
264 | return ret; | |
265 | } | |
266 | ||
267 | static void __exit h1940_exit(void) | |
268 | { | |
269 | platform_device_unregister(s3c24xx_snd_device); | |
270 | snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
271 | hp_jack_gpios); | |
272 | gpio_free(H1940_LATCH_AUDIO_POWER); | |
273 | } | |
274 | ||
275 | module_init(h1940_init); | |
276 | module_exit(h1940_exit); | |
277 | ||
278 | /* Module information */ | |
279 | MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick"); | |
280 | MODULE_DESCRIPTION("ALSA SoC H1940"); | |
281 | MODULE_LICENSE("GPL"); |