/* * ASoC driver for Stretch s6105 IP camera platform * * Author: Daniel Gloeckner, * Copyright: (C) 2009 emlix GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include "s6000-pcm.h" #include "s6000-i2s.h" #define S6105_CAM_CODEC_CLOCK 12288000 static int s6105_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; int ret = 0; /* set codec DAI configuration */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 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_CBM_CFM | SND_SOC_DAIFMT_NB_NF); if (ret < 0) return ret; /* set the codec system clock */ ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; return 0; } static struct snd_soc_ops s6105_ops = { .hw_params = s6105_hw_params, }; /* s6105 machine dapm widgets */ static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { SND_SOC_DAPM_LINE("Audio Out Differential", NULL), SND_SOC_DAPM_LINE("Audio Out Stereo", NULL), SND_SOC_DAPM_LINE("Audio In", NULL), }; /* s6105 machine audio_mapnections to the codec pins */ static const struct snd_soc_dapm_route audio_map[] = { /* Audio Out connected to HPLOUT, HPLCOM, HPROUT */ {"Audio Out Differential", NULL, "HPLOUT"}, {"Audio Out Differential", NULL, "HPLCOM"}, {"Audio Out Stereo", NULL, "HPLOUT"}, {"Audio Out Stereo", NULL, "HPROUT"}, /* Audio In connected to LINE1L, LINE1R */ {"LINE1L", NULL, "Audio In"}, {"LINE1R", NULL, "Audio In"}, }; static int output_type_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = 2; if (uinfo->value.enumerated.item) { uinfo->value.enumerated.item = 1; strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT"); } else { strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM"); } return 0; } static int output_type_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { ucontrol->value.enumerated.item[0] = kcontrol->private_value; return 0; } static int output_type_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = kcontrol->private_data; struct snd_soc_dapm_context *dapm = &codec->dapm; unsigned int val = (ucontrol->value.enumerated.item[0] != 0); char *differential = "Audio Out Differential"; char *stereo = "Audio Out Stereo"; if (kcontrol->private_value == val) return 0; kcontrol->private_value = val; snd_soc_dapm_disable_pin(dapm, val ? differential : stereo); snd_soc_dapm_sync(dapm); snd_soc_dapm_enable_pin(dapm, val ? stereo : differential); snd_soc_dapm_sync(dapm); return 1; } static const struct snd_kcontrol_new audio_out_mux = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Master Output Mux", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .info = output_type_info, .get = output_type_get, .put = output_type_put, .private_value = 1 /* default to stereo */ }; /* Logic for a aic3x as connected on the s6105 ip camera ref design */ static int s6105_aic3x_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; /* Add s6105 specific widgets */ snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets, ARRAY_SIZE(aic3x_dapm_widgets)); /* Set up s6105 specific audio path audio_map */ snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); /* not present */ snd_soc_dapm_nc_pin(dapm, "MONO_LOUT"); snd_soc_dapm_nc_pin(dapm, "LINE2L"); snd_soc_dapm_nc_pin(dapm, "LINE2R"); /* not connected */ snd_soc_dapm_nc_pin(dapm, "MIC3L"); /* LINE2L on this chip */ snd_soc_dapm_nc_pin(dapm, "MIC3R"); /* LINE2R on this chip */ snd_soc_dapm_nc_pin(dapm, "LLOUT"); snd_soc_dapm_nc_pin(dapm, "RLOUT"); snd_soc_dapm_nc_pin(dapm, "HPRCOM"); /* always connected */ snd_soc_dapm_enable_pin(dapm, "Audio In"); /* must correspond to audio_out_mux.private_value initializer */ snd_soc_dapm_disable_pin(dapm, "Audio Out Differential"); snd_soc_dapm_sync(dapm); snd_soc_dapm_enable_pin(dapm, "Audio Out Stereo"); snd_soc_dapm_sync(dapm); snd_ctl_add(codec->card->snd_card, snd_ctl_new1(&audio_out_mux, codec)); return 0; } /* s6105 digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link s6105_dai = { .name = "TLV320AIC31", .stream_name = "AIC31", .cpu_dai_name = "s6000-i2s", .codec_dai_name = "tlv320aic3x-hifi", .platform_name = "s6000-pcm-audio", .codec_name = "tlv320aic3x-codec.0-001a", .init = s6105_aic3x_init, .ops = &s6105_ops, }; /* s6105 audio machine driver */ static struct snd_soc_card snd_soc_card_s6105 = { .name = "Stretch IP Camera", .dai_link = &s6105_dai, .num_links = 1, }; static struct s6000_snd_platform_data __initdata s6105_snd_data = { .wide = 0, .channel_in = 0, .channel_out = 1, .lines_in = 1, .lines_out = 1, .same_rate = 1, }; static struct platform_device *s6105_snd_device; /* temporary i2c device creation until this can be moved into the machine * support file. */ static struct i2c_board_info i2c_device[] = { { I2C_BOARD_INFO("tlv320aic33", 0x18), } }; static int __init s6105_init(void) { int ret; i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device)); s6105_snd_device = platform_device_alloc("soc-audio", -1); if (!s6105_snd_device) return -ENOMEM; platform_set_drvdata(s6105_snd_device, &snd_soc_card_s6105); platform_device_add_data(s6105_snd_device, &s6105_snd_data, sizeof(s6105_snd_data)); ret = platform_device_add(s6105_snd_device); if (ret) platform_device_put(s6105_snd_device); return ret; } static void __exit s6105_exit(void) { platform_device_unregister(s6105_snd_device); } module_init(s6105_init); module_exit(s6105_exit); MODULE_AUTHOR("Daniel Gloeckner"); MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver"); MODULE_LICENSE("GPL");