253 lines
6.7 KiB
C
253 lines
6.7 KiB
C
/*
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* ASoC driver for Stretch s6105 IP camera platform
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*
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* Author: Daniel Gloeckner, <dg@emlix.com>
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* Copyright: (C) 2009 emlix GmbH <info@emlix.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <variant/dmac.h>
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#include "../codecs/tlv320aic3x.h"
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#include "s6000-pcm.h"
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#include "s6000-i2s.h"
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#define S6105_CAM_CODEC_CLOCK 12288000
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static int s6105_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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int ret = 0;
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
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SND_SOC_DAIFMT_NB_NF);
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if (ret < 0)
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return ret;
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/* set the codec system clock */
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK,
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SND_SOC_CLOCK_OUT);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops s6105_ops = {
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.hw_params = s6105_hw_params,
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};
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/* s6105 machine dapm widgets */
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static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
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SND_SOC_DAPM_LINE("Audio Out Differential", NULL),
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SND_SOC_DAPM_LINE("Audio Out Stereo", NULL),
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SND_SOC_DAPM_LINE("Audio In", NULL),
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};
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/* s6105 machine audio_mapnections to the codec pins */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
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{"Audio Out Differential", NULL, "HPLOUT"},
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{"Audio Out Differential", NULL, "HPLCOM"},
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{"Audio Out Stereo", NULL, "HPLOUT"},
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{"Audio Out Stereo", NULL, "HPROUT"},
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/* Audio In connected to LINE1L, LINE1R */
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{"LINE1L", NULL, "Audio In"},
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{"LINE1R", NULL, "Audio In"},
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};
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static int output_type_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item) {
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT");
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} else {
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strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM");
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}
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return 0;
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}
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static int output_type_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.enumerated.item[0] = kcontrol->private_value;
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return 0;
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}
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static int output_type_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = kcontrol->private_data;
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unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
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char *differential = "Audio Out Differential";
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char *stereo = "Audio Out Stereo";
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if (kcontrol->private_value == val)
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return 0;
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kcontrol->private_value = val;
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snd_soc_dapm_disable_pin(codec, val ? differential : stereo);
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snd_soc_dapm_sync(codec);
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snd_soc_dapm_enable_pin(codec, val ? stereo : differential);
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snd_soc_dapm_sync(codec);
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return 1;
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}
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static const struct snd_kcontrol_new audio_out_mux = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Master Output Mux",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = output_type_info,
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.get = output_type_get,
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.put = output_type_put,
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.private_value = 1 /* default to stereo */
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};
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/* Logic for a aic3x as connected on the s6105 ip camera ref design */
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static int s6105_aic3x_init(struct snd_soc_codec *codec)
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{
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/* Add s6105 specific widgets */
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snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
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ARRAY_SIZE(aic3x_dapm_widgets));
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/* Set up s6105 specific audio path audio_map */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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/* not present */
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snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
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snd_soc_dapm_nc_pin(codec, "LINE2L");
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snd_soc_dapm_nc_pin(codec, "LINE2R");
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/* not connected */
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snd_soc_dapm_nc_pin(codec, "MIC3L"); /* LINE2L on this chip */
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snd_soc_dapm_nc_pin(codec, "MIC3R"); /* LINE2R on this chip */
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snd_soc_dapm_nc_pin(codec, "LLOUT");
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snd_soc_dapm_nc_pin(codec, "RLOUT");
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snd_soc_dapm_nc_pin(codec, "HPRCOM");
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/* always connected */
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snd_soc_dapm_enable_pin(codec, "Audio In");
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/* must correspond to audio_out_mux.private_value initializer */
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snd_soc_dapm_disable_pin(codec, "Audio Out Differential");
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snd_soc_dapm_sync(codec);
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snd_soc_dapm_enable_pin(codec, "Audio Out Stereo");
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snd_soc_dapm_sync(codec);
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snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec));
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return 0;
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}
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/* s6105 digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link s6105_dai = {
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.name = "TLV320AIC31",
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.stream_name = "AIC31",
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.cpu_dai = &s6000_i2s_dai,
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.codec_dai = &aic3x_dai,
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.init = s6105_aic3x_init,
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.ops = &s6105_ops,
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};
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/* s6105 audio machine driver */
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static struct snd_soc_card snd_soc_card_s6105 = {
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.name = "Stretch IP Camera",
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.platform = &s6000_soc_platform,
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.dai_link = &s6105_dai,
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.num_links = 1,
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};
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/* s6105 audio private data */
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static struct aic3x_setup_data s6105_aic3x_setup = {
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};
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/* s6105 audio subsystem */
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static struct snd_soc_device s6105_snd_devdata = {
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.card = &snd_soc_card_s6105,
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.codec_dev = &soc_codec_dev_aic3x,
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.codec_data = &s6105_aic3x_setup,
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};
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static struct s6000_snd_platform_data __initdata s6105_snd_data = {
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.wide = 0,
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.channel_in = 0,
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.channel_out = 1,
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.lines_in = 1,
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.lines_out = 1,
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.same_rate = 1,
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};
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static struct platform_device *s6105_snd_device;
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/* temporary i2c device creation until this can be moved into the machine
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* support file.
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*/
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static struct i2c_board_info i2c_device[] = {
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{ I2C_BOARD_INFO("tlv320aic33", 0x18), }
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};
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static int __init s6105_init(void)
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{
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int ret;
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i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));
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s6105_snd_device = platform_device_alloc("soc-audio", -1);
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if (!s6105_snd_device)
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return -ENOMEM;
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platform_set_drvdata(s6105_snd_device, &s6105_snd_devdata);
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s6105_snd_devdata.dev = &s6105_snd_device->dev;
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platform_device_add_data(s6105_snd_device, &s6105_snd_data,
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sizeof(s6105_snd_data));
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ret = platform_device_add(s6105_snd_device);
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if (ret)
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platform_device_put(s6105_snd_device);
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return ret;
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}
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static void __exit s6105_exit(void)
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{
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platform_device_unregister(s6105_snd_device);
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}
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module_init(s6105_init);
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module_exit(s6105_exit);
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MODULE_AUTHOR("Daniel Gloeckner");
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MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
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MODULE_LICENSE("GPL");
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