/* * neo1973_gta02_wm8753.c -- SoC audio for Openmoko Freerunner(GTA02) * * Copyright 2007 Openmoko Inc * Author: Graeme Gregory * Copyright 2007 Wolfson Microelectronics PLC. * Author: Graeme Gregory * Copyright 2009 Wolfson Microelectronics * * 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 #include #include #include #include #include #include #include #include "../codecs/wm8753.h" #include "dma.h" #include "s3c24xx-i2s.h" static struct snd_soc_card neo1973_gta02; static int neo1973_gta02_hifi_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 *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; unsigned int pll_out = 0, bclk = 0; int ret = 0; unsigned long iis_clkrate; iis_clkrate = s3c24xx_i2s_get_clockrate(); switch (params_rate(params)) { case 8000: case 16000: pll_out = 12288000; break; case 48000: bclk = WM8753_BCLK_DIV_4; pll_out = 12288000; break; case 96000: bclk = WM8753_BCLK_DIV_2; pll_out = 12288000; break; case 11025: bclk = WM8753_BCLK_DIV_16; pll_out = 11289600; break; case 22050: bclk = WM8753_BCLK_DIV_8; pll_out = 11289600; break; case 44100: bclk = WM8753_BCLK_DIV_4; pll_out = 11289600; break; case 88200: bclk = WM8753_BCLK_DIV_2; pll_out = 11289600; break; } /* set codec DAI configuration */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; /* set cpu DAI configuration */ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; /* set the codec system clock for DAC and ADC */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* set MCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, S3C2410_IISMOD_32FS); if (ret < 0) return ret; /* set codec BCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk); if (ret < 0) return ret; /* set prescaler division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(4, 4)); if (ret < 0) return ret; /* codec PLL input is PCLK/4 */ ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, iis_clkrate / 4, pll_out); if (ret < 0) return ret; return 0; } static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; /* disable the PLL */ return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0); } /* * Neo1973 WM8753 HiFi DAI opserations. */ static struct snd_soc_ops neo1973_gta02_hifi_ops = { .hw_params = neo1973_gta02_hifi_hw_params, .hw_free = neo1973_gta02_hifi_hw_free, }; static int neo1973_gta02_voice_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 *codec_dai = rtd->codec_dai; unsigned int pcmdiv = 0; int ret = 0; unsigned long iis_clkrate; iis_clkrate = s3c24xx_i2s_get_clockrate(); if (params_rate(params) != 8000) return -EINVAL; if (params_channels(params) != 1) return -EINVAL; pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */ /* todo: gg check mode (DSP_B) against CSR datasheet */ /* set codec DAI configuration */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; /* set the codec system clock for DAC and ADC */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* set codec PCM division for sample rate */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv); if (ret < 0) return ret; /* configure and enable PLL for 12.288MHz output */ ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, iis_clkrate / 4, 12288000); if (ret < 0) return ret; return 0; } static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; /* disable the PLL */ return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0); } static struct snd_soc_ops neo1973_gta02_voice_ops = { .hw_params = neo1973_gta02_voice_hw_params, .hw_free = neo1973_gta02_voice_hw_free, }; #define LM4853_AMP 1 #define LM4853_SPK 2 static u8 lm4853_state; /* This has no effect, it exists only to maintain compatibility with * existing ALSA state files. */ static int lm4853_set_state(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { int val = ucontrol->value.integer.value[0]; if (val) lm4853_state |= LM4853_AMP; else lm4853_state &= ~LM4853_AMP; return 0; } static int lm4853_get_state(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP; return 0; } static int lm4853_set_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { int val = ucontrol->value.integer.value[0]; if (val) { lm4853_state |= LM4853_SPK; gpio_set_value(GTA02_GPIO_HP_IN, 0); } else { lm4853_state &= ~LM4853_SPK; gpio_set_value(GTA02_GPIO_HP_IN, 1); } return 0; } static int lm4853_get_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1; return 0; } static int lm4853_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event)); return 0; } static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = { SND_SOC_DAPM_SPK("Stereo Out", lm4853_event), SND_SOC_DAPM_LINE("GSM Line Out", NULL), SND_SOC_DAPM_LINE("GSM Line In", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), SND_SOC_DAPM_MIC("Handset Mic", NULL), SND_SOC_DAPM_SPK("Handset Spk", NULL), }; /* example machine audio_mapnections */ static const struct snd_soc_dapm_route audio_map[] = { /* Connections to the lm4853 amp */ {"Stereo Out", NULL, "LOUT1"}, {"Stereo Out", NULL, "ROUT1"}, /* Connections to the GSM Module */ {"GSM Line Out", NULL, "MONO1"}, {"GSM Line Out", NULL, "MONO2"}, {"RXP", NULL, "GSM Line In"}, {"RXN", NULL, "GSM Line In"}, /* Connections to Headset */ {"MIC1", NULL, "Mic Bias"}, {"Mic Bias", NULL, "Headset Mic"}, /* Call Mic */ {"MIC2", NULL, "Mic Bias"}, {"MIC2N", NULL, "Mic Bias"}, {"Mic Bias", NULL, "Handset Mic"}, /* Call Speaker */ {"Handset Spk", NULL, "LOUT2"}, {"Handset Spk", NULL, "ROUT2"}, /* Connect the ALC pins */ {"ACIN", NULL, "ACOP"}, }; static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = { SOC_DAPM_PIN_SWITCH("Stereo Out"), SOC_DAPM_PIN_SWITCH("GSM Line Out"), SOC_DAPM_PIN_SWITCH("GSM Line In"), SOC_DAPM_PIN_SWITCH("Headset Mic"), SOC_DAPM_PIN_SWITCH("Handset Mic"), SOC_DAPM_PIN_SWITCH("Handset Spk"), /* This has no effect, it exists only to maintain compatibility with * existing ALSA state files. */ SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0, lm4853_get_state, lm4853_set_state), SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0, lm4853_get_spk, lm4853_set_spk), }; /* * This is an example machine initialisation for a wm8753 connected to a * neo1973 GTA02. */ static int neo1973_gta02_wm8753_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; int err; /* set up NC codec pins */ snd_soc_dapm_nc_pin(dapm, "OUT3"); snd_soc_dapm_nc_pin(dapm, "OUT4"); snd_soc_dapm_nc_pin(dapm, "LINE1"); snd_soc_dapm_nc_pin(dapm, "LINE2"); /* Add neo1973 gta02 specific widgets */ snd_soc_dapm_new_controls(dapm, wm8753_dapm_widgets, ARRAY_SIZE(wm8753_dapm_widgets)); /* add neo1973 gta02 specific controls */ err = snd_soc_add_controls(codec, wm8753_neo1973_gta02_controls, ARRAY_SIZE(wm8753_neo1973_gta02_controls)); if (err < 0) return err; /* set up neo1973 gta02 specific audio path audio_map */ snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); /* set endpoints to default off mode */ snd_soc_dapm_disable_pin(dapm, "Stereo Out"); snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); snd_soc_dapm_disable_pin(dapm, "GSM Line In"); snd_soc_dapm_disable_pin(dapm, "Headset Mic"); snd_soc_dapm_disable_pin(dapm, "Handset Mic"); snd_soc_dapm_disable_pin(dapm, "Handset Spk"); /* allow audio paths from the GSM modem to run during suspend */ snd_soc_dapm_ignore_suspend(dapm, "Stereo Out"); snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out"); snd_soc_dapm_ignore_suspend(dapm, "GSM Line In"); snd_soc_dapm_ignore_suspend(dapm, "Headset Mic"); snd_soc_dapm_ignore_suspend(dapm, "Handset Mic"); snd_soc_dapm_ignore_suspend(dapm, "Handset Spk"); snd_soc_dapm_sync(dapm); return 0; } /* * BT Codec DAI */ static struct snd_soc_dai_driver bt_dai = { .name = "bluetooth-dai", .playback = { .channels_min = 1, .channels_max = 1, .rates = SNDRV_PCM_RATE_8000, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .capture = { .channels_min = 1, .channels_max = 1, .rates = SNDRV_PCM_RATE_8000, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, }; static struct snd_soc_dai_link neo1973_gta02_dai[] = { { /* Hifi Playback - for similatious use with voice below */ .name = "WM8753", .stream_name = "WM8753 HiFi", .cpu_dai_name = "s3c24xx-i2s", .codec_dai_name = "wm8753-hifi", .init = neo1973_gta02_wm8753_init, .platform_name = "samsung-audio", .codec_name = "wm8753-codec.0-001a", .ops = &neo1973_gta02_hifi_ops, }, { /* Voice via BT */ .name = "Bluetooth", .stream_name = "Voice", .cpu_dai_name = "bluetooth-dai", .codec_dai_name = "wm8753-voice", .ops = &neo1973_gta02_voice_ops, .codec_name = "wm8753-codec.0-001a", .platform_name = "samsung-audio", }, }; static struct snd_soc_card neo1973_gta02 = { .name = "neo1973-gta02", .dai_link = neo1973_gta02_dai, .num_links = ARRAY_SIZE(neo1973_gta02_dai), }; static struct platform_device *neo1973_gta02_snd_device; static int __init neo1973_gta02_init(void) { int ret; if (!machine_is_neo1973_gta02()) { printk(KERN_INFO "Only GTA02 is supported by this ASoC driver\n"); return -ENODEV; } neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1); if (!neo1973_gta02_snd_device) return -ENOMEM; /* register bluetooth DAI here */ ret = snd_soc_register_dai(&neo1973_gta02_snd_device->dev, &bt_dai); if (ret) goto err_put_device; platform_set_drvdata(neo1973_gta02_snd_device, &neo1973_gta02); ret = platform_device_add(neo1973_gta02_snd_device); if (ret) goto err_unregister_dai; /* Initialise GPIOs used by amp */ ret = gpio_request(GTA02_GPIO_HP_IN, "GTA02_HP_IN"); if (ret) { pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_HP_IN); goto err_del_device; } ret = gpio_direction_output(GTA02_GPIO_HP_IN, 1); if (ret) { pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_HP_IN); goto err_free_gpio_hp_in; } ret = gpio_request(GTA02_GPIO_AMP_SHUT, "GTA02_AMP_SHUT"); if (ret) { pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_AMP_SHUT); goto err_free_gpio_hp_in; } ret = gpio_direction_output(GTA02_GPIO_AMP_SHUT, 1); if (ret) { pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_AMP_SHUT); goto err_free_gpio_amp_shut; } return 0; err_free_gpio_amp_shut: gpio_free(GTA02_GPIO_AMP_SHUT); err_free_gpio_hp_in: gpio_free(GTA02_GPIO_HP_IN); err_del_device: platform_device_del(neo1973_gta02_snd_device); err_unregister_dai: snd_soc_unregister_dai(&neo1973_gta02_snd_device->dev); err_put_device: platform_device_put(neo1973_gta02_snd_device); return ret; } module_init(neo1973_gta02_init); static void __exit neo1973_gta02_exit(void) { snd_soc_unregister_dai(&neo1973_gta02_snd_device->dev); platform_device_unregister(neo1973_gta02_snd_device); gpio_free(GTA02_GPIO_HP_IN); gpio_free(GTA02_GPIO_AMP_SHUT); } module_exit(neo1973_gta02_exit); /* Module information */ MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org"); MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02"); MODULE_LICENSE("GPL");