| 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 | |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/gpio.h> |
| 18 | #include <linux/module.h> |
| 19 | |
| 20 | #include <sound/soc.h> |
| 21 | #include <sound/jack.h> |
| 22 | |
| 23 | #include "regs-iis.h" |
| 24 | #include <asm/mach-types.h> |
| 25 | |
| 26 | #include <mach/gpio-samsung.h> |
| 27 | #include "s3c24xx-i2s.h" |
| 28 | |
| 29 | static const unsigned int rates[] = { |
| 30 | 11025, |
| 31 | 22050, |
| 32 | 44100, |
| 33 | }; |
| 34 | |
| 35 | static const struct snd_pcm_hw_constraint_list hw_rates = { |
| 36 | .count = ARRAY_SIZE(rates), |
| 37 | .list = rates, |
| 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 | |
| 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; |
| 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: |
| 91 | dev_err(rtd->dev, "%s: rate %d is not supported\n", |
| 92 | __func__, rate); |
| 93 | return -EINVAL; |
| 94 | } |
| 95 | |
| 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)) |
| 132 | gpio_set_value(S3C_GPIO_END + 9, 1); |
| 133 | else |
| 134 | gpio_set_value(S3C_GPIO_END + 9, 0); |
| 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 | { |
| 164 | snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE, |
| 165 | &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); |
| 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 | static int h1940_uda1380_card_remove(struct snd_soc_card *card) |
| 174 | { |
| 175 | snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), |
| 176 | hp_jack_gpios); |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | /* s3c24xx digital audio interface glue - connects codec <--> CPU */ |
| 182 | static struct snd_soc_dai_link h1940_uda1380_dai[] = { |
| 183 | { |
| 184 | .name = "uda1380", |
| 185 | .stream_name = "UDA1380 Duplex", |
| 186 | .cpu_dai_name = "s3c24xx-iis", |
| 187 | .codec_dai_name = "uda1380-hifi", |
| 188 | .init = h1940_uda1380_init, |
| 189 | .platform_name = "s3c24xx-iis", |
| 190 | .codec_name = "uda1380-codec.0-001a", |
| 191 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 192 | SND_SOC_DAIFMT_CBS_CFS, |
| 193 | .ops = &h1940_ops, |
| 194 | }, |
| 195 | }; |
| 196 | |
| 197 | static struct snd_soc_card h1940_asoc = { |
| 198 | .name = "h1940", |
| 199 | .owner = THIS_MODULE, |
| 200 | .remove = h1940_uda1380_card_remove, |
| 201 | .dai_link = h1940_uda1380_dai, |
| 202 | .num_links = ARRAY_SIZE(h1940_uda1380_dai), |
| 203 | |
| 204 | .dapm_widgets = uda1380_dapm_widgets, |
| 205 | .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), |
| 206 | .dapm_routes = audio_map, |
| 207 | .num_dapm_routes = ARRAY_SIZE(audio_map), |
| 208 | }; |
| 209 | |
| 210 | static int __init h1940_init(void) |
| 211 | { |
| 212 | int ret; |
| 213 | |
| 214 | if (!machine_is_h1940()) |
| 215 | return -ENODEV; |
| 216 | |
| 217 | /* configure some gpios */ |
| 218 | ret = gpio_request(S3C_GPIO_END + 9, "speaker-power"); |
| 219 | if (ret) |
| 220 | goto err_out; |
| 221 | |
| 222 | ret = gpio_direction_output(S3C_GPIO_END + 9, 0); |
| 223 | if (ret) |
| 224 | goto err_gpio; |
| 225 | |
| 226 | s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); |
| 227 | if (!s3c24xx_snd_device) { |
| 228 | ret = -ENOMEM; |
| 229 | goto err_gpio; |
| 230 | } |
| 231 | |
| 232 | platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc); |
| 233 | ret = platform_device_add(s3c24xx_snd_device); |
| 234 | |
| 235 | if (ret) |
| 236 | goto err_plat; |
| 237 | |
| 238 | return 0; |
| 239 | |
| 240 | err_plat: |
| 241 | platform_device_put(s3c24xx_snd_device); |
| 242 | err_gpio: |
| 243 | gpio_free(S3C_GPIO_END + 9); |
| 244 | |
| 245 | err_out: |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | static void __exit h1940_exit(void) |
| 250 | { |
| 251 | platform_device_unregister(s3c24xx_snd_device); |
| 252 | gpio_free(S3C_GPIO_END + 9); |
| 253 | } |
| 254 | |
| 255 | module_init(h1940_init); |
| 256 | module_exit(h1940_exit); |
| 257 | |
| 258 | /* Module information */ |
| 259 | MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick"); |
| 260 | MODULE_DESCRIPTION("ALSA SoC H1940"); |
| 261 | MODULE_LICENSE("GPL"); |