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 dev_err(cpu_dai->dev, 46 "Failed to set the cpu dai format.\n"); 47 return ret; 48 } 49 50 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 51 SND_SOC_DAIFMT_NB_NF | 52 SND_SOC_DAIFMT_CBM_CFM); 53 if (ret) { 54 dev_err(cpu_dai->dev, 55 "Failed to set the codec format.\n"); 56 return ret; 57 } 58 59 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 60 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 61 if (ret) { 62 dev_err(cpu_dai->dev, 63 "Failed to set the codec sysclk.\n"); 64 return ret; 65 } 66 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); 67 68 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 69 SND_SOC_CLOCK_IN); 70 if (ret) { 71 dev_err(cpu_dai->dev, 72 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); 73 return ret; 74 } 75 76 return 0; 77 } 78 79 static struct snd_soc_ops eukrea_tlv320_snd_ops = { 80 .hw_params = eukrea_tlv320_hw_params, 81 }; 82 83 static struct snd_soc_dai_link eukrea_tlv320_dai = { 84 .name = "tlv320aic23", 85 .stream_name = "TLV320AIC23", 86 .codec_dai_name = "tlv320aic23-hifi", 87 .platform_name = "imx-ssi.0", 88 .codec_name = "tlv320aic23-codec.0-001a", 89 .cpu_dai_name = "imx-ssi.0", 90 .ops = &eukrea_tlv320_snd_ops, 91 }; 92 93 static struct snd_soc_card eukrea_tlv320 = { 94 .name = "cpuimx-audio", 95 .owner = THIS_MODULE, 96 .dai_link = &eukrea_tlv320_dai, 97 .num_links = 1, 98 }; 99 100 static int eukrea_tlv320_probe(struct platform_device *pdev) 101 { 102 int ret; 103 int int_port = 0, ext_port; 104 105 if (machine_is_eukrea_cpuimx27()) { 106 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 107 IMX_AUDMUX_V1_PCR_SYN | 108 IMX_AUDMUX_V1_PCR_TFSDIR | 109 IMX_AUDMUX_V1_PCR_TCLKDIR | 110 IMX_AUDMUX_V1_PCR_RFSDIR | 111 IMX_AUDMUX_V1_PCR_RCLKDIR | 112 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 113 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 114 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 115 ); 116 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 117 IMX_AUDMUX_V1_PCR_SYN | 118 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 119 ); 120 } else if (machine_is_eukrea_cpuimx25sd() || 121 machine_is_eukrea_cpuimx35sd() || 122 machine_is_eukrea_cpuimx51sd()) { 123 ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3; 124 imx_audmux_v2_configure_port(int_port, 125 IMX_AUDMUX_V2_PTCR_SYN | 126 IMX_AUDMUX_V2_PTCR_TFSDIR | 127 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 128 IMX_AUDMUX_V2_PTCR_TCLKDIR | 129 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 130 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 131 ); 132 imx_audmux_v2_configure_port(ext_port, 133 IMX_AUDMUX_V2_PTCR_SYN, 134 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 135 ); 136 } else { 137 /* return happy. We might run on a totally different machine */ 138 return 0; 139 } 140 141 eukrea_tlv320.dev = &pdev->dev; 142 ret = snd_soc_register_card(&eukrea_tlv320); 143 if (ret) 144 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 145 146 return ret; 147 } 148 149 static int eukrea_tlv320_remove(struct platform_device *pdev) 150 { 151 snd_soc_unregister_card(&eukrea_tlv320); 152 153 return 0; 154 } 155 156 static struct platform_driver eukrea_tlv320_driver = { 157 .driver = { 158 .name = "eukrea_tlv320", 159 .owner = THIS_MODULE, 160 }, 161 .probe = eukrea_tlv320_probe, 162 .remove = eukrea_tlv320_remove, 163 }; 164 165 module_platform_driver(eukrea_tlv320_driver); 166 167 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 168 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 169 MODULE_LICENSE("GPL"); 170 MODULE_ALIAS("platform:eukrea_tlv320"); 171