1/* 2 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * You should have received a copy of the GNU General Public License along 9 * with this program; if not, write to the Free Software Foundation, Inc., 10 * 675 Mass Ave, Cambridge, MA 02139, USA. 11 * 12 */ 13 14#include <linux/module.h> 15#include <linux/moduleparam.h> 16#include <linux/timer.h> 17#include <linux/interrupt.h> 18#include <linux/platform_device.h> 19#include <sound/core.h> 20#include <sound/pcm.h> 21#include <sound/soc.h> 22#include <sound/soc-dapm.h> 23#include <linux/gpio.h> 24 25#include "../codecs/jz4740.h" 26#include "jz4740-pcm.h" 27#include "jz4740-i2s.h" 28 29 30#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29) 31#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4) 32 33static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget, 34 struct snd_kcontrol *ctrl, int event) 35{ 36 int on = 0; 37 if (event & SND_SOC_DAPM_POST_PMU) 38 on = 1; 39 else if (event & SND_SOC_DAPM_PRE_PMD) 40 on = 0; 41 42 gpio_set_value(QI_LB60_SND_GPIO, on); 43 gpio_set_value(QI_LB60_AMP_GPIO, on); 44 45 return 0; 46} 47 48static const struct snd_soc_dapm_widget qi_lb60_widgets[] = { 49 SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event), 50 SND_SOC_DAPM_MIC("Mic", NULL), 51}; 52 53static const struct snd_soc_dapm_route qi_lb60_routes[] = { 54 {"Mic", NULL, "MIC"}, 55 {"Speaker", NULL, "LOUT"}, 56 {"Speaker", NULL, "ROUT"}, 57}; 58 59#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \ 60 SND_SOC_DAIFMT_NB_NF | \ 61 SND_SOC_DAIFMT_CBM_CFM) 62 63static int qi_lb60_codec_init(struct snd_soc_codec *codec) 64{ 65 int ret; 66 struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai; 67 68 snd_soc_dapm_nc_pin(codec, "LIN"); 69 snd_soc_dapm_nc_pin(codec, "RIN"); 70 71 ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT); 72 if (ret < 0) { 73 dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret); 74 return ret; 75 } 76 77 snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets)); 78 snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes)); 79 snd_soc_dapm_sync(codec); 80 81 return 0; 82} 83 84static struct snd_soc_dai_link qi_lb60_dai = { 85 .name = "jz4740", 86 .stream_name = "jz4740", 87 .cpu_dai = &jz4740_i2s_dai, 88 .codec_dai = &jz4740_codec_dai, 89 .init = qi_lb60_codec_init, 90}; 91 92static struct snd_soc_card qi_lb60 = { 93 .name = "QI LB60", 94 .dai_link = &qi_lb60_dai, 95 .num_links = 1, 96 .platform = &jz4740_soc_platform, 97}; 98 99static struct snd_soc_device qi_lb60_snd_devdata = { 100 .card = &qi_lb60, 101 .codec_dev = &soc_codec_dev_jz4740_codec, 102}; 103 104static struct platform_device *qi_lb60_snd_device; 105 106static int __init qi_lb60_init(void) 107{ 108 int ret; 109 110 qi_lb60_snd_device = platform_device_alloc("soc-audio", -1); 111 112 if (!qi_lb60_snd_device) 113 return -ENOMEM; 114 115 ret = gpio_request(QI_LB60_SND_GPIO, "SND"); 116 if (ret) { 117 pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n", 118 QI_LB60_SND_GPIO, ret); 119 goto err_device_put; 120 } 121 122 ret = gpio_request(QI_LB60_AMP_GPIO, "AMP"); 123 if (ret) { 124 pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n", 125 QI_LB60_AMP_GPIO, ret); 126 goto err_gpio_free_snd; 127 } 128 129 gpio_direction_output(QI_LB60_SND_GPIO, 0); 130 gpio_direction_output(QI_LB60_AMP_GPIO, 0); 131 132 platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata); 133 qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev; 134 135 ret = platform_device_add(qi_lb60_snd_device); 136 if (ret) { 137 pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret); 138 goto err_unset_pdata; 139 } 140 141 return 0; 142 143err_unset_pdata: 144 platform_set_drvdata(qi_lb60_snd_device, NULL); 145/*err_gpio_free_amp:*/ 146 gpio_free(QI_LB60_AMP_GPIO); 147err_gpio_free_snd: 148 gpio_free(QI_LB60_SND_GPIO); 149err_device_put: 150 platform_device_put(qi_lb60_snd_device); 151 152 return ret; 153} 154module_init(qi_lb60_init); 155 156static void __exit qi_lb60_exit(void) 157{ 158 gpio_free(QI_LB60_AMP_GPIO); 159 gpio_free(QI_LB60_SND_GPIO); 160 platform_device_unregister(qi_lb60_snd_device); 161} 162module_exit(qi_lb60_exit); 163 164MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 165MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support"); 166MODULE_LICENSE("GPL v2"); 167