1 /* 2 * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode 3 * 4 * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> 5 * 6 * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c 7 * which is Copyright 2009 Simtec Electronics 8 * and on sound/soc/imx/phycore-ac97.c which is 9 * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 * 16 */ 17 18 #include <linux/module.h> 19 #include <linux/moduleparam.h> 20 #include <linux/device.h> 21 #include <linux/i2c.h> 22 #include <sound/core.h> 23 #include <sound/pcm.h> 24 #include <sound/soc.h> 25 #include <asm/mach-types.h> 26 27 #include "../codecs/tlv320aic23.h" 28 #include "imx-ssi.h" 29 #include "imx-audmux.h" 30 31 #define CODEC_CLOCK 12000000 32 33 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, 34 struct snd_pcm_hw_params *params) 35 { 36 struct snd_soc_pcm_runtime *rtd = substream->private_data; 37 struct snd_soc_dai *codec_dai = rtd->codec_dai; 38 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 39 int ret; 40 41 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | 42 SND_SOC_DAIFMT_NB_NF | 43 SND_SOC_DAIFMT_CBM_CFM); 44 if (ret) { 45 pr_err("%s: failed set cpu dai format\n", __func__); 46 return ret; 47 } 48 49 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 50 SND_SOC_DAIFMT_NB_NF | 51 SND_SOC_DAIFMT_CBM_CFM); 52 if (ret) { 53 pr_err("%s: failed set codec dai format\n", __func__); 54 return ret; 55 } 56 57 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 58 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 59 if (ret) { 60 pr_err("%s: failed setting codec sysclk\n", __func__); 61 return ret; 62 } 63 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); 64 65 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 66 SND_SOC_CLOCK_IN); 67 if (ret) { 68 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n"); 69 return ret; 70 } 71 72 return 0; 73 } 74 75 static struct snd_soc_ops eukrea_tlv320_snd_ops = { 76 .hw_params = eukrea_tlv320_hw_params, 77 }; 78 79 static struct snd_soc_dai_link eukrea_tlv320_dai = { 80 .name = "tlv320aic23", 81 .stream_name = "TLV320AIC23", 82 .codec_dai_name = "tlv320aic23-hifi", 83 .platform_name = "imx-fiq-pcm-audio.0", 84 .codec_name = "tlv320aic23-codec.0-001a", 85 .cpu_dai_name = "imx-ssi.0", 86 .ops = &eukrea_tlv320_snd_ops, 87 }; 88 89 static struct snd_soc_card eukrea_tlv320 = { 90 .name = "cpuimx-audio", 91 .owner = THIS_MODULE, 92 .dai_link = &eukrea_tlv320_dai, 93 .num_links = 1, 94 }; 95 96 static struct platform_device *eukrea_tlv320_snd_device; 97 98 static int __init eukrea_tlv320_init(void) 99 { 100 int ret; 101 int int_port = 0, ext_port; 102 103 if (machine_is_eukrea_cpuimx27()) { 104 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 105 IMX_AUDMUX_V1_PCR_SYN | 106 IMX_AUDMUX_V1_PCR_TFSDIR | 107 IMX_AUDMUX_V1_PCR_TCLKDIR | 108 IMX_AUDMUX_V1_PCR_RFSDIR | 109 IMX_AUDMUX_V1_PCR_RCLKDIR | 110 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 111 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 112 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 113 ); 114 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 115 IMX_AUDMUX_V1_PCR_SYN | 116 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 117 ); 118 } else if (machine_is_eukrea_cpuimx25sd() || 119 machine_is_eukrea_cpuimx35sd() || 120 machine_is_eukrea_cpuimx51sd()) { 121 ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3; 122 imx_audmux_v2_configure_port(int_port, 123 IMX_AUDMUX_V2_PTCR_SYN | 124 IMX_AUDMUX_V2_PTCR_TFSDIR | 125 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 126 IMX_AUDMUX_V2_PTCR_TCLKDIR | 127 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 128 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 129 ); 130 imx_audmux_v2_configure_port(ext_port, 131 IMX_AUDMUX_V2_PTCR_SYN, 132 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 133 ); 134 } else { 135 /* return happy. We might run on a totally different machine */ 136 return 0; 137 } 138 139 eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1); 140 if (!eukrea_tlv320_snd_device) 141 return -ENOMEM; 142 143 platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320); 144 ret = platform_device_add(eukrea_tlv320_snd_device); 145 146 if (ret) { 147 printk(KERN_ERR "ASoC: Platform device allocation failed\n"); 148 platform_device_put(eukrea_tlv320_snd_device); 149 } 150 151 return ret; 152 } 153 154 static void __exit eukrea_tlv320_exit(void) 155 { 156 platform_device_unregister(eukrea_tlv320_snd_device); 157 } 158 159 module_init(eukrea_tlv320_init); 160 module_exit(eukrea_tlv320_exit); 161 162 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 163 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 164 MODULE_LICENSE("GPL"); 165