/* * rx1950.c -- ALSA Soc Audio Layer * * Copyright (c) 2010 Vasily Khoruzhick * * Based on smdk2440.c and magician.c * * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com * Philipp Zabel * Denis Grigoriev * Vasily Khoruzhick * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include #include #include #include #include #include #include "regs-iis.h" #include #include "s3c24xx-i2s.h" static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd); static int rx1950_uda1380_card_remove(struct snd_soc_card *card); static int rx1950_startup(struct snd_pcm_substream *substream); static int rx1950_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); static int rx1950_spk_power(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event); static unsigned int rates[] = { 16000, 44100, 48000, }; static struct snd_pcm_hw_constraint_list hw_rates = { .count = ARRAY_SIZE(rates), .list = rates, .mask = 0, }; static struct snd_soc_jack hp_jack; static struct snd_soc_jack_pin hp_jack_pins[] = { { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE, }, { .pin = "Speaker", .mask = SND_JACK_HEADPHONE, .invert = 1, }, }; static struct snd_soc_jack_gpio hp_jack_gpios[] = { [0] = { .gpio = S3C2410_GPG(12), .name = "hp-gpio", .report = SND_JACK_HEADPHONE, .invert = 1, .debounce_time = 200, }, }; static struct snd_soc_ops rx1950_ops = { .startup = rx1950_startup, .hw_params = rx1950_hw_params, }; /* s3c24xx digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link rx1950_uda1380_dai[] = { { .name = "uda1380", .stream_name = "UDA1380 Duplex", .cpu_dai_name = "s3c24xx-iis", .codec_dai_name = "uda1380-hifi", .init = rx1950_uda1380_init, .platform_name = "s3c24xx-iis", .codec_name = "uda1380-codec.0-001a", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .ops = &rx1950_ops, }, }; /* rx1950 machine dapm widgets */ static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_MIC("Mic Jack", NULL), SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power), }; /* rx1950 machine audio_map */ static const struct snd_soc_dapm_route audio_map[] = { /* headphone connected to VOUTLHP, VOUTRHP */ {"Headphone Jack", NULL, "VOUTLHP"}, {"Headphone Jack", NULL, "VOUTRHP"}, /* ext speaker connected to VOUTL, VOUTR */ {"Speaker", NULL, "VOUTL"}, {"Speaker", NULL, "VOUTR"}, /* mic is connected to VINM */ {"VINM", NULL, "Mic Jack"}, }; static struct snd_soc_card rx1950_asoc = { .name = "rx1950", .owner = THIS_MODULE, .remove = rx1950_uda1380_card_remove, .dai_link = rx1950_uda1380_dai, .num_links = ARRAY_SIZE(rx1950_uda1380_dai), .dapm_widgets = uda1380_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), .dapm_routes = audio_map, .num_dapm_routes = ARRAY_SIZE(audio_map), }; static struct platform_device *s3c24xx_snd_device; static int rx1950_startup(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_rates); } static int rx1950_spk_power(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { if (SND_SOC_DAPM_EVENT_ON(event)) gpio_set_value(S3C2410_GPA(1), 1); else gpio_set_value(S3C2410_GPA(1), 0); return 0; } static int rx1950_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int div; int ret; unsigned int rate = params_rate(params); int clk_source, fs_mode; switch (rate) { case 16000: case 48000: clk_source = S3C24XX_CLKSRC_PCLK; fs_mode = S3C2410_IISMOD_256FS; div = s3c24xx_i2s_get_clockrate() / (256 * rate); if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate)) div++; break; case 44100: case 88200: clk_source = S3C24XX_CLKSRC_MPLL; fs_mode = S3C2410_IISMOD_384FS; div = 1; break; default: printk(KERN_ERR "%s: rate %d is not supported\n", __func__, rate); return -EINVAL; } /* select clock source */ ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* set MCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, fs_mode); if (ret < 0) return ret; /* set BCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, S3C2410_IISMOD_32FS); if (ret < 0) return ret; /* set prescaler division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(div, div)); if (ret < 0) return ret; return 0; } static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, &hp_jack); snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins), hp_jack_pins); snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), hp_jack_gpios); return 0; } static int rx1950_uda1380_card_remove(struct snd_soc_card *card) { snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), hp_jack_gpios); return 0; } static int __init rx1950_init(void) { int ret; if (!machine_is_rx1950()) return -ENODEV; /* configure some gpios */ ret = gpio_request(S3C2410_GPA(1), "speaker-power"); if (ret) goto err_gpio; ret = gpio_direction_output(S3C2410_GPA(1), 0); if (ret) goto err_gpio_conf; s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); if (!s3c24xx_snd_device) { ret = -ENOMEM; goto err_plat_alloc; } platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc); ret = platform_device_add(s3c24xx_snd_device); if (ret) { platform_device_put(s3c24xx_snd_device); goto err_plat_add; } return 0; err_plat_add: err_plat_alloc: err_gpio_conf: gpio_free(S3C2410_GPA(1)); err_gpio: return ret; } static void __exit rx1950_exit(void) { platform_device_unregister(s3c24xx_snd_device); gpio_free(S3C2410_GPA(1)); } module_init(rx1950_init); module_exit(rx1950_exit); /* Module information */ MODULE_AUTHOR("Vasily Khoruzhick"); MODULE_DESCRIPTION("ALSA SoC RX1950"); MODULE_LICENSE("GPL");