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/types.h> 21#include <linux/gpio.h> 22#include <linux/module.h> 23 24#include <sound/soc.h> 25#include <sound/jack.h> 26 27#include <mach/gpio-samsung.h> 28#include "regs-iis.h" 29#include <asm/mach-types.h> 30 31#include "s3c24xx-i2s.h" 32 33static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd); 34static int rx1950_uda1380_card_remove(struct snd_soc_card *card); 35static int rx1950_startup(struct snd_pcm_substream *substream); 36static int rx1950_hw_params(struct snd_pcm_substream *substream, 37 struct snd_pcm_hw_params *params); 38static int rx1950_spk_power(struct snd_soc_dapm_widget *w, 39 struct snd_kcontrol *kcontrol, int event); 40 41static unsigned int rates[] = { 42 16000, 43 44100, 44 48000, 45}; 46 47static struct snd_pcm_hw_constraint_list hw_rates = { 48 .count = ARRAY_SIZE(rates), 49 .list = rates, 50 .mask = 0, 51}; 52 53static struct snd_soc_jack hp_jack; 54 55static struct snd_soc_jack_pin hp_jack_pins[] = { 56 { 57 .pin = "Headphone Jack", 58 .mask = SND_JACK_HEADPHONE, 59 }, 60 { 61 .pin = "Speaker", 62 .mask = SND_JACK_HEADPHONE, 63 .invert = 1, 64 }, 65}; 66 67static struct snd_soc_jack_gpio hp_jack_gpios[] = { 68 [0] = { 69 .gpio = S3C2410_GPG(12), 70 .name = "hp-gpio", 71 .report = SND_JACK_HEADPHONE, 72 .invert = 1, 73 .debounce_time = 200, 74 }, 75}; 76 77static struct snd_soc_ops rx1950_ops = { 78 .startup = rx1950_startup, 79 .hw_params = rx1950_hw_params, 80}; 81 82/* s3c24xx digital audio interface glue - connects codec <--> CPU */ 83static struct snd_soc_dai_link rx1950_uda1380_dai[] = { 84 { 85 .name = "uda1380", 86 .stream_name = "UDA1380 Duplex", 87 .cpu_dai_name = "s3c24xx-iis", 88 .codec_dai_name = "uda1380-hifi", 89 .init = rx1950_uda1380_init, 90 .platform_name = "s3c24xx-iis", 91 .codec_name = "uda1380-codec.0-001a", 92 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 93 SND_SOC_DAIFMT_CBS_CFS, 94 .ops = &rx1950_ops, 95 }, 96}; 97 98/* rx1950 machine dapm widgets */ 99static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { 100 SND_SOC_DAPM_HP("Headphone Jack", NULL), 101 SND_SOC_DAPM_MIC("Mic Jack", NULL), 102 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power), 103}; 104 105/* rx1950 machine audio_map */ 106static const struct snd_soc_dapm_route audio_map[] = { 107 /* headphone connected to VOUTLHP, VOUTRHP */ 108 {"Headphone Jack", NULL, "VOUTLHP"}, 109 {"Headphone Jack", NULL, "VOUTRHP"}, 110 111 /* ext speaker connected to VOUTL, VOUTR */ 112 {"Speaker", NULL, "VOUTL"}, 113 {"Speaker", NULL, "VOUTR"}, 114 115 /* mic is connected to VINM */ 116 {"VINM", NULL, "Mic Jack"}, 117}; 118 119static struct snd_soc_card rx1950_asoc = { 120 .name = "rx1950", 121 .owner = THIS_MODULE, 122 .remove = rx1950_uda1380_card_remove, 123 .dai_link = rx1950_uda1380_dai, 124 .num_links = ARRAY_SIZE(rx1950_uda1380_dai), 125 126 .dapm_widgets = uda1380_dapm_widgets, 127 .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), 128 .dapm_routes = audio_map, 129 .num_dapm_routes = ARRAY_SIZE(audio_map), 130}; 131 132static struct platform_device *s3c24xx_snd_device; 133 134static int rx1950_startup(struct snd_pcm_substream *substream) 135{ 136 struct snd_pcm_runtime *runtime = substream->runtime; 137 138 return snd_pcm_hw_constraint_list(runtime, 0, 139 SNDRV_PCM_HW_PARAM_RATE, 140 &hw_rates); 141} 142 143static int rx1950_spk_power(struct snd_soc_dapm_widget *w, 144 struct snd_kcontrol *kcontrol, int event) 145{ 146 if (SND_SOC_DAPM_EVENT_ON(event)) 147 gpio_set_value(S3C2410_GPA(1), 1); 148 else 149 gpio_set_value(S3C2410_GPA(1), 0); 150 151 return 0; 152} 153 154static int rx1950_hw_params(struct snd_pcm_substream *substream, 155 struct snd_pcm_hw_params *params) 156{ 157 struct snd_soc_pcm_runtime *rtd = substream->private_data; 158 struct snd_soc_dai *cpu_dai = rtd->cpu_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; 168 fs_mode = S3C2410_IISMOD_256FS; 169 div = s3c24xx_i2s_get_clockrate() / (256 * rate); 170 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate)) 171 div++; 172 break; 173 case 44100: 174 case 88200: 175 clk_source = S3C24XX_CLKSRC_MPLL; 176 fs_mode = S3C2410_IISMOD_384FS; 177 div = 1; 178 break; 179 default: 180 printk(KERN_ERR "%s: rate %d is not supported\n", 181 __func__, rate); 182 return -EINVAL; 183 } 184 185 /* select clock source */ 186 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate, 187 SND_SOC_CLOCK_OUT); 188 if (ret < 0) 189 return ret; 190 191 /* set MCLK division for sample rate */ 192 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, 193 fs_mode); 194 if (ret < 0) 195 return ret; 196 197 /* set BCLK division for sample rate */ 198 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, 199 S3C2410_IISMOD_32FS); 200 if (ret < 0) 201 return ret; 202 203 /* set prescaler division for sample rate */ 204 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, 205 S3C24XX_PRESCALE(div, div)); 206 if (ret < 0) 207 return ret; 208 209 return 0; 210} 211 212static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd) 213{ 214 snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE, 215 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); 216 217 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), 218 hp_jack_gpios); 219 220 return 0; 221} 222 223static int rx1950_uda1380_card_remove(struct snd_soc_card *card) 224{ 225 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), 226 hp_jack_gpios); 227 228 return 0; 229} 230 231static int __init rx1950_init(void) 232{ 233 int ret; 234 235 if (!machine_is_rx1950()) 236 return -ENODEV; 237 238 /* configure some gpios */ 239 ret = gpio_request(S3C2410_GPA(1), "speaker-power"); 240 if (ret) 241 goto err_gpio; 242 243 ret = gpio_direction_output(S3C2410_GPA(1), 0); 244 if (ret) 245 goto err_gpio_conf; 246 247 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); 248 if (!s3c24xx_snd_device) { 249 ret = -ENOMEM; 250 goto err_plat_alloc; 251 } 252 253 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc); 254 ret = platform_device_add(s3c24xx_snd_device); 255 256 if (ret) { 257 platform_device_put(s3c24xx_snd_device); 258 goto err_plat_add; 259 } 260 261 return 0; 262 263err_plat_add: 264err_plat_alloc: 265err_gpio_conf: 266 gpio_free(S3C2410_GPA(1)); 267 268err_gpio: 269 return ret; 270} 271 272static void __exit rx1950_exit(void) 273{ 274 platform_device_unregister(s3c24xx_snd_device); 275 gpio_free(S3C2410_GPA(1)); 276} 277 278module_init(rx1950_init); 279module_exit(rx1950_exit); 280 281/* Module information */ 282MODULE_AUTHOR("Vasily Khoruzhick"); 283MODULE_DESCRIPTION("ALSA SoC RX1950"); 284MODULE_LICENSE("GPL"); 285