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81d97802 VK |
1 | /* |
2 | * rx1950.c -- ALSA Soc Audio Layer | |
3 | * | |
4 | * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com> | |
5 | * | |
6 | * Based on smdk2440.c and magician.c | |
7 | * | |
8 | * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com | |
9 | * Philipp Zabel <philipp.zabel@gmail.com> | |
10 | * Denis Grigoriev <dgreenday@gmail.com> | |
11 | * Vasily Khoruzhick <anarsoul@gmail.com> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | * | |
18 | */ | |
19 | ||
b8487928 | 20 | #include <linux/types.h> |
81d97802 | 21 | #include <linux/gpio.h> |
da155d5b | 22 | #include <linux/module.h> |
81d97802 | 23 | |
81d97802 | 24 | #include <sound/soc.h> |
81d97802 VK |
25 | #include <sound/jack.h> |
26 | ||
27 | #include <plat/regs-iis.h> | |
dedc3cf5 VK |
28 | #include <asm/mach-types.h> |
29 | ||
81d97802 | 30 | #include "s3c24xx-i2s.h" |
81d97802 VK |
31 | |
32 | static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd); | |
33 | static int rx1950_startup(struct snd_pcm_substream *substream); | |
34 | static int rx1950_hw_params(struct snd_pcm_substream *substream, | |
35 | struct snd_pcm_hw_params *params); | |
36 | static int rx1950_spk_power(struct snd_soc_dapm_widget *w, | |
37 | struct snd_kcontrol *kcontrol, int event); | |
38 | ||
39 | static unsigned int rates[] = { | |
40 | 16000, | |
41 | 44100, | |
42 | 48000, | |
81d97802 VK |
43 | }; |
44 | ||
45 | static struct snd_pcm_hw_constraint_list hw_rates = { | |
46 | .count = ARRAY_SIZE(rates), | |
47 | .list = rates, | |
48 | .mask = 0, | |
49 | }; | |
50 | ||
51 | static struct snd_soc_jack hp_jack; | |
52 | ||
53 | static struct snd_soc_jack_pin hp_jack_pins[] = { | |
54 | { | |
55 | .pin = "Headphone Jack", | |
56 | .mask = SND_JACK_HEADPHONE, | |
57 | }, | |
58 | { | |
59 | .pin = "Speaker", | |
60 | .mask = SND_JACK_HEADPHONE, | |
61 | .invert = 1, | |
62 | }, | |
63 | }; | |
64 | ||
65 | static struct snd_soc_jack_gpio hp_jack_gpios[] = { | |
66 | [0] = { | |
67 | .gpio = S3C2410_GPG(12), | |
68 | .name = "hp-gpio", | |
69 | .report = SND_JACK_HEADPHONE, | |
70 | .invert = 1, | |
71 | .debounce_time = 200, | |
72 | }, | |
73 | }; | |
74 | ||
75 | static struct snd_soc_ops rx1950_ops = { | |
76 | .startup = rx1950_startup, | |
77 | .hw_params = rx1950_hw_params, | |
78 | }; | |
79 | ||
80 | /* s3c24xx digital audio interface glue - connects codec <--> CPU */ | |
81 | static struct snd_soc_dai_link rx1950_uda1380_dai[] = { | |
82 | { | |
83 | .name = "uda1380", | |
84 | .stream_name = "UDA1380 Duplex", | |
85 | .cpu_dai_name = "s3c24xx-iis", | |
86 | .codec_dai_name = "uda1380-hifi", | |
87 | .init = rx1950_uda1380_init, | |
a08485d8 | 88 | .platform_name = "s3c24xx-iis", |
81d97802 VK |
89 | .codec_name = "uda1380-codec.0-001a", |
90 | .ops = &rx1950_ops, | |
91 | }, | |
92 | }; | |
93 | ||
81d97802 VK |
94 | /* rx1950 machine dapm widgets */ |
95 | static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { | |
96 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
97 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
98 | SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power), | |
99 | }; | |
100 | ||
101 | /* rx1950 machine audio_map */ | |
102 | static const struct snd_soc_dapm_route audio_map[] = { | |
103 | /* headphone connected to VOUTLHP, VOUTRHP */ | |
104 | {"Headphone Jack", NULL, "VOUTLHP"}, | |
105 | {"Headphone Jack", NULL, "VOUTRHP"}, | |
106 | ||
107 | /* ext speaker connected to VOUTL, VOUTR */ | |
108 | {"Speaker", NULL, "VOUTL"}, | |
109 | {"Speaker", NULL, "VOUTR"}, | |
110 | ||
111 | /* mic is connected to VINM */ | |
112 | {"VINM", NULL, "Mic Jack"}, | |
113 | }; | |
114 | ||
8ae23229 MB |
115 | static struct snd_soc_card rx1950_asoc = { |
116 | .name = "rx1950", | |
095d79dc | 117 | .owner = THIS_MODULE, |
8ae23229 MB |
118 | .dai_link = rx1950_uda1380_dai, |
119 | .num_links = ARRAY_SIZE(rx1950_uda1380_dai), | |
120 | ||
121 | .dapm_widgets = uda1380_dapm_widgets, | |
122 | .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), | |
123 | .dapm_routes = audio_map, | |
124 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
125 | }; | |
126 | ||
81d97802 | 127 | static struct platform_device *s3c24xx_snd_device; |
81d97802 VK |
128 | |
129 | static int rx1950_startup(struct snd_pcm_substream *substream) | |
130 | { | |
131 | struct snd_pcm_runtime *runtime = substream->runtime; | |
132 | ||
133 | runtime->hw.rate_min = hw_rates.list[0]; | |
134 | runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1]; | |
135 | runtime->hw.rates = SNDRV_PCM_RATE_KNOT; | |
136 | ||
137 | return snd_pcm_hw_constraint_list(runtime, 0, | |
138 | SNDRV_PCM_HW_PARAM_RATE, | |
139 | &hw_rates); | |
140 | } | |
141 | ||
142 | static int rx1950_spk_power(struct snd_soc_dapm_widget *w, | |
143 | struct snd_kcontrol *kcontrol, int event) | |
144 | { | |
145 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
146 | gpio_set_value(S3C2410_GPA(1), 1); | |
147 | else | |
148 | gpio_set_value(S3C2410_GPA(1), 0); | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | static int rx1950_hw_params(struct snd_pcm_substream *substream, | |
154 | struct snd_pcm_hw_params *params) | |
155 | { | |
156 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
157 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
158 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
159 | int div; | |
160 | int ret; | |
161 | unsigned int rate = params_rate(params); | |
162 | int clk_source, fs_mode; | |
163 | ||
164 | switch (rate) { | |
165 | case 16000: | |
166 | case 48000: | |
167 | clk_source = S3C24XX_CLKSRC_PCLK; | |
1fdc7dd5 VK |
168 | fs_mode = S3C2410_IISMOD_256FS; |
169 | div = s3c24xx_i2s_get_clockrate() / (256 * rate); | |
170 | if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate)) | |
81d97802 VK |
171 | div++; |
172 | break; | |
173 | case 44100: | |
174 | case 88200: | |
175 | clk_source = S3C24XX_CLKSRC_MPLL; | |
ccb3b84f VK |
176 | fs_mode = S3C2410_IISMOD_384FS; |
177 | div = 1; | |
81d97802 VK |
178 | break; |
179 | default: | |
180 | printk(KERN_ERR "%s: rate %d is not supported\n", | |
181 | __func__, rate); | |
182 | return -EINVAL; | |
183 | } | |
184 | ||
185 | /* set codec DAI configuration */ | |
186 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
187 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | ||
191 | /* set cpu DAI configuration */ | |
192 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
193 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
194 | if (ret < 0) | |
195 | return ret; | |
196 | ||
197 | /* select clock source */ | |
198 | ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate, | |
199 | SND_SOC_CLOCK_OUT); | |
200 | if (ret < 0) | |
201 | return ret; | |
202 | ||
203 | /* set MCLK division for sample rate */ | |
204 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, | |
ccb3b84f | 205 | fs_mode); |
81d97802 VK |
206 | if (ret < 0) |
207 | return ret; | |
208 | ||
209 | /* set BCLK division for sample rate */ | |
210 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, | |
211 | S3C2410_IISMOD_32FS); | |
212 | if (ret < 0) | |
213 | return ret; | |
214 | ||
215 | /* set prescaler division for sample rate */ | |
216 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, | |
217 | S3C24XX_PRESCALE(div, div)); | |
218 | if (ret < 0) | |
219 | return ret; | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd) | |
225 | { | |
226 | struct snd_soc_codec *codec = rtd->codec; | |
ce6120cc | 227 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
81d97802 VK |
228 | int err; |
229 | ||
ce6120cc LG |
230 | snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); |
231 | snd_soc_dapm_enable_pin(dapm, "Speaker"); | |
b60fc60c | 232 | snd_soc_dapm_enable_pin(dapm, "Mic Jack"); |
81d97802 | 233 | |
81d97802 VK |
234 | snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, |
235 | &hp_jack); | |
236 | ||
237 | snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins), | |
238 | hp_jack_pins); | |
239 | ||
240 | snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
241 | hp_jack_gpios); | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static int __init rx1950_init(void) | |
247 | { | |
248 | int ret; | |
249 | ||
dedc3cf5 VK |
250 | if (!machine_is_rx1950()) |
251 | return -ENODEV; | |
252 | ||
81d97802 VK |
253 | /* configure some gpios */ |
254 | ret = gpio_request(S3C2410_GPA(1), "speaker-power"); | |
255 | if (ret) | |
256 | goto err_gpio; | |
257 | ||
258 | ret = gpio_direction_output(S3C2410_GPA(1), 0); | |
259 | if (ret) | |
260 | goto err_gpio_conf; | |
261 | ||
262 | s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); | |
263 | if (!s3c24xx_snd_device) { | |
264 | ret = -ENOMEM; | |
265 | goto err_plat_alloc; | |
266 | } | |
267 | ||
268 | platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc); | |
269 | ret = platform_device_add(s3c24xx_snd_device); | |
270 | ||
271 | if (ret) { | |
272 | platform_device_put(s3c24xx_snd_device); | |
273 | goto err_plat_add; | |
274 | } | |
275 | ||
81d97802 VK |
276 | return 0; |
277 | ||
81d97802 VK |
278 | err_plat_add: |
279 | err_plat_alloc: | |
280 | err_gpio_conf: | |
281 | gpio_free(S3C2410_GPA(1)); | |
282 | ||
283 | err_gpio: | |
284 | return ret; | |
285 | } | |
286 | ||
287 | static void __exit rx1950_exit(void) | |
288 | { | |
289 | platform_device_unregister(s3c24xx_snd_device); | |
290 | snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
291 | hp_jack_gpios); | |
81d97802 VK |
292 | gpio_free(S3C2410_GPA(1)); |
293 | } | |
294 | ||
295 | module_init(rx1950_init); | |
296 | module_exit(rx1950_exit); | |
297 | ||
298 | /* Module information */ | |
299 | MODULE_AUTHOR("Vasily Khoruzhick"); | |
300 | MODULE_DESCRIPTION("ALSA SoC RX1950"); | |
301 | MODULE_LICENSE("GPL"); |