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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 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/moduleparam.h> | |
81d97802 | 22 | #include <linux/platform_device.h> |
81d97802 VK |
23 | #include <linux/i2c.h> |
24 | #include <linux/gpio.h> | |
25 | #include <linux/clk.h> | |
26 | ||
81d97802 VK |
27 | #include <sound/soc.h> |
28 | #include <sound/soc-dapm.h> | |
29 | #include <sound/uda1380.h> | |
30 | #include <sound/jack.h> | |
31 | ||
32 | #include <plat/regs-iis.h> | |
33 | ||
34 | #include <mach/regs-clock.h> | |
35 | ||
dedc3cf5 VK |
36 | #include <asm/mach-types.h> |
37 | ||
81d97802 VK |
38 | #include "s3c-dma.h" |
39 | #include "s3c24xx-i2s.h" | |
40 | #include "../codecs/uda1380.h" | |
41 | ||
42 | static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd); | |
43 | static int rx1950_startup(struct snd_pcm_substream *substream); | |
44 | static int rx1950_hw_params(struct snd_pcm_substream *substream, | |
45 | struct snd_pcm_hw_params *params); | |
46 | static int rx1950_spk_power(struct snd_soc_dapm_widget *w, | |
47 | struct snd_kcontrol *kcontrol, int event); | |
48 | ||
49 | static unsigned int rates[] = { | |
50 | 16000, | |
51 | 44100, | |
52 | 48000, | |
53 | 88200, | |
54 | }; | |
55 | ||
56 | static struct snd_pcm_hw_constraint_list hw_rates = { | |
57 | .count = ARRAY_SIZE(rates), | |
58 | .list = rates, | |
59 | .mask = 0, | |
60 | }; | |
61 | ||
62 | static struct snd_soc_jack hp_jack; | |
63 | ||
64 | static struct snd_soc_jack_pin hp_jack_pins[] = { | |
65 | { | |
66 | .pin = "Headphone Jack", | |
67 | .mask = SND_JACK_HEADPHONE, | |
68 | }, | |
69 | { | |
70 | .pin = "Speaker", | |
71 | .mask = SND_JACK_HEADPHONE, | |
72 | .invert = 1, | |
73 | }, | |
74 | }; | |
75 | ||
76 | static struct snd_soc_jack_gpio hp_jack_gpios[] = { | |
77 | [0] = { | |
78 | .gpio = S3C2410_GPG(12), | |
79 | .name = "hp-gpio", | |
80 | .report = SND_JACK_HEADPHONE, | |
81 | .invert = 1, | |
82 | .debounce_time = 200, | |
83 | }, | |
84 | }; | |
85 | ||
86 | static struct snd_soc_ops rx1950_ops = { | |
87 | .startup = rx1950_startup, | |
88 | .hw_params = rx1950_hw_params, | |
89 | }; | |
90 | ||
91 | /* s3c24xx digital audio interface glue - connects codec <--> CPU */ | |
92 | static struct snd_soc_dai_link rx1950_uda1380_dai[] = { | |
93 | { | |
94 | .name = "uda1380", | |
95 | .stream_name = "UDA1380 Duplex", | |
96 | .cpu_dai_name = "s3c24xx-iis", | |
97 | .codec_dai_name = "uda1380-hifi", | |
98 | .init = rx1950_uda1380_init, | |
99 | .platform_name = "s3c24xx-pcm-audio", | |
100 | .codec_name = "uda1380-codec.0-001a", | |
101 | .ops = &rx1950_ops, | |
102 | }, | |
103 | }; | |
104 | ||
105 | static struct snd_soc_card rx1950_asoc = { | |
106 | .name = "rx1950", | |
107 | .dai_link = rx1950_uda1380_dai, | |
108 | .num_links = ARRAY_SIZE(rx1950_uda1380_dai), | |
109 | }; | |
110 | ||
111 | /* rx1950 machine dapm widgets */ | |
112 | static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { | |
113 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
114 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
115 | SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power), | |
116 | }; | |
117 | ||
118 | /* rx1950 machine audio_map */ | |
119 | static const struct snd_soc_dapm_route audio_map[] = { | |
120 | /* headphone connected to VOUTLHP, VOUTRHP */ | |
121 | {"Headphone Jack", NULL, "VOUTLHP"}, | |
122 | {"Headphone Jack", NULL, "VOUTRHP"}, | |
123 | ||
124 | /* ext speaker connected to VOUTL, VOUTR */ | |
125 | {"Speaker", NULL, "VOUTL"}, | |
126 | {"Speaker", NULL, "VOUTR"}, | |
127 | ||
128 | /* mic is connected to VINM */ | |
129 | {"VINM", NULL, "Mic Jack"}, | |
130 | }; | |
131 | ||
132 | static struct platform_device *s3c24xx_snd_device; | |
133 | static struct clk *xtal; | |
134 | ||
135 | static int rx1950_startup(struct snd_pcm_substream *substream) | |
136 | { | |
137 | struct snd_pcm_runtime *runtime = substream->runtime; | |
138 | ||
139 | runtime->hw.rate_min = hw_rates.list[0]; | |
140 | runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1]; | |
141 | runtime->hw.rates = SNDRV_PCM_RATE_KNOT; | |
142 | ||
143 | return snd_pcm_hw_constraint_list(runtime, 0, | |
144 | SNDRV_PCM_HW_PARAM_RATE, | |
145 | &hw_rates); | |
146 | } | |
147 | ||
148 | static int rx1950_spk_power(struct snd_soc_dapm_widget *w, | |
149 | struct snd_kcontrol *kcontrol, int event) | |
150 | { | |
151 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
152 | gpio_set_value(S3C2410_GPA(1), 1); | |
153 | else | |
154 | gpio_set_value(S3C2410_GPA(1), 0); | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
159 | static int rx1950_hw_params(struct snd_pcm_substream *substream, | |
160 | struct snd_pcm_hw_params *params) | |
161 | { | |
162 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
163 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
164 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
165 | int div; | |
166 | int ret; | |
167 | unsigned int rate = params_rate(params); | |
168 | int clk_source, fs_mode; | |
169 | ||
170 | switch (rate) { | |
171 | case 16000: | |
172 | case 48000: | |
173 | clk_source = S3C24XX_CLKSRC_PCLK; | |
174 | fs_mode = S3C2410_IISMOD_384FS; | |
175 | div = s3c24xx_i2s_get_clockrate() / (384 * rate); | |
176 | if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (182 * rate)) | |
177 | div++; | |
178 | break; | |
179 | case 44100: | |
180 | case 88200: | |
181 | clk_source = S3C24XX_CLKSRC_MPLL; | |
182 | fs_mode = S3C2410_IISMOD_256FS; | |
183 | div = clk_get_rate(xtal) / (256 * rate); | |
184 | if (clk_get_rate(xtal) % (256 * rate) > (128 * rate)) | |
185 | div++; | |
186 | break; | |
187 | default: | |
188 | printk(KERN_ERR "%s: rate %d is not supported\n", | |
189 | __func__, rate); | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | /* set codec DAI configuration */ | |
194 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
195 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
196 | if (ret < 0) | |
197 | return ret; | |
198 | ||
199 | /* set cpu DAI configuration */ | |
200 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
201 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); | |
202 | if (ret < 0) | |
203 | return ret; | |
204 | ||
205 | /* select clock source */ | |
206 | ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate, | |
207 | SND_SOC_CLOCK_OUT); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
211 | /* set MCLK division for sample rate */ | |
212 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, | |
213 | S3C2410_IISMOD_384FS); | |
214 | if (ret < 0) | |
215 | return ret; | |
216 | ||
217 | /* set BCLK division for sample rate */ | |
218 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, | |
219 | S3C2410_IISMOD_32FS); | |
220 | if (ret < 0) | |
221 | return ret; | |
222 | ||
223 | /* set prescaler division for sample rate */ | |
224 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, | |
225 | S3C24XX_PRESCALE(div, div)); | |
226 | if (ret < 0) | |
227 | return ret; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd) | |
233 | { | |
234 | struct snd_soc_codec *codec = rtd->codec; | |
235 | int err; | |
236 | ||
237 | /* Add rx1950 specific widgets */ | |
238 | err = snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets, | |
239 | ARRAY_SIZE(uda1380_dapm_widgets)); | |
240 | ||
241 | if (err) | |
242 | return err; | |
243 | ||
244 | /* Set up rx1950 specific audio path audio_mapnects */ | |
245 | err = snd_soc_dapm_add_routes(codec, audio_map, | |
246 | ARRAY_SIZE(audio_map)); | |
247 | ||
248 | if (err) | |
249 | return err; | |
250 | ||
251 | snd_soc_dapm_enable_pin(codec, "Headphone Jack"); | |
252 | snd_soc_dapm_enable_pin(codec, "Speaker"); | |
253 | ||
254 | snd_soc_dapm_sync(codec); | |
255 | ||
256 | snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, | |
257 | &hp_jack); | |
258 | ||
259 | snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins), | |
260 | hp_jack_pins); | |
261 | ||
262 | snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
263 | hp_jack_gpios); | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | static int __init rx1950_init(void) | |
269 | { | |
270 | int ret; | |
271 | ||
dedc3cf5 VK |
272 | if (!machine_is_rx1950()) |
273 | return -ENODEV; | |
274 | ||
81d97802 VK |
275 | /* configure some gpios */ |
276 | ret = gpio_request(S3C2410_GPA(1), "speaker-power"); | |
277 | if (ret) | |
278 | goto err_gpio; | |
279 | ||
280 | ret = gpio_direction_output(S3C2410_GPA(1), 0); | |
281 | if (ret) | |
282 | goto err_gpio_conf; | |
283 | ||
284 | s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); | |
285 | if (!s3c24xx_snd_device) { | |
286 | ret = -ENOMEM; | |
287 | goto err_plat_alloc; | |
288 | } | |
289 | ||
290 | platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc); | |
291 | ret = platform_device_add(s3c24xx_snd_device); | |
292 | ||
293 | if (ret) { | |
294 | platform_device_put(s3c24xx_snd_device); | |
295 | goto err_plat_add; | |
296 | } | |
297 | ||
298 | xtal = clk_get(&s3c24xx_snd_device->dev, "xtal"); | |
299 | ||
300 | if (IS_ERR(xtal)) { | |
301 | ret = PTR_ERR(xtal); | |
302 | platform_device_unregister(s3c24xx_snd_device); | |
303 | goto err_clk; | |
304 | } | |
305 | ||
306 | return 0; | |
307 | ||
308 | err_clk: | |
309 | err_plat_add: | |
310 | err_plat_alloc: | |
311 | err_gpio_conf: | |
312 | gpio_free(S3C2410_GPA(1)); | |
313 | ||
314 | err_gpio: | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static void __exit rx1950_exit(void) | |
319 | { | |
320 | platform_device_unregister(s3c24xx_snd_device); | |
321 | snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), | |
322 | hp_jack_gpios); | |
323 | clk_put(xtal); | |
324 | gpio_free(S3C2410_GPA(1)); | |
325 | } | |
326 | ||
327 | module_init(rx1950_init); | |
328 | module_exit(rx1950_exit); | |
329 | ||
330 | /* Module information */ | |
331 | MODULE_AUTHOR("Vasily Khoruzhick"); | |
332 | MODULE_DESCRIPTION("ALSA SoC RX1950"); | |
333 | MODULE_LICENSE("GPL"); |