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/errno.h> 19 #include <linux/module.h> 20 #include <linux/moduleparam.h> 21 #include <linux/of.h> 22 #include <linux/of_platform.h> 23 #include <linux/device.h> 24 #include <linux/i2c.h> 25 #include <sound/core.h> 26 #include <sound/pcm.h> 27 #include <sound/soc.h> 28 #include <asm/mach-types.h> 29 30 #include "../codecs/tlv320aic23.h" 31 #include "imx-ssi.h" 32 #include "imx-audmux.h" 33 34 #define CODEC_CLOCK 12000000 35 36 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, 37 struct snd_pcm_hw_params *params) 38 { 39 struct snd_soc_pcm_runtime *rtd = substream->private_data; 40 struct snd_soc_dai *codec_dai = rtd->codec_dai; 41 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 42 int ret; 43 44 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 45 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 46 if (ret) { 47 dev_err(cpu_dai->dev, 48 "Failed to set the codec sysclk.\n"); 49 return ret; 50 } 51 52 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); 53 54 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 55 SND_SOC_CLOCK_IN); 56 /* fsl_ssi lacks the set_sysclk ops */ 57 if (ret && ret != -EINVAL) { 58 dev_err(cpu_dai->dev, 59 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); 60 return ret; 61 } 62 63 return 0; 64 } 65 66 static const struct snd_soc_ops eukrea_tlv320_snd_ops = { 67 .hw_params = eukrea_tlv320_hw_params, 68 }; 69 70 static struct snd_soc_dai_link eukrea_tlv320_dai = { 71 .name = "tlv320aic23", 72 .stream_name = "TLV320AIC23", 73 .codec_dai_name = "tlv320aic23-hifi", 74 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 75 SND_SOC_DAIFMT_CBM_CFM, 76 .ops = &eukrea_tlv320_snd_ops, 77 }; 78 79 static struct snd_soc_card eukrea_tlv320 = { 80 .owner = THIS_MODULE, 81 .dai_link = &eukrea_tlv320_dai, 82 .num_links = 1, 83 }; 84 85 static int eukrea_tlv320_probe(struct platform_device *pdev) 86 { 87 int ret; 88 int int_port = 0, ext_port; 89 struct device_node *np = pdev->dev.of_node; 90 struct device_node *ssi_np = NULL, *codec_np = NULL; 91 92 eukrea_tlv320.dev = &pdev->dev; 93 if (np) { 94 ret = snd_soc_of_parse_card_name(&eukrea_tlv320, 95 "eukrea,model"); 96 if (ret) { 97 dev_err(&pdev->dev, 98 "eukrea,model node missing or invalid.\n"); 99 goto err; 100 } 101 102 ssi_np = of_parse_phandle(pdev->dev.of_node, 103 "ssi-controller", 0); 104 if (!ssi_np) { 105 dev_err(&pdev->dev, 106 "ssi-controller missing or invalid.\n"); 107 ret = -ENODEV; 108 goto err; 109 } 110 111 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); 112 if (codec_np) 113 eukrea_tlv320_dai.codec_of_node = codec_np; 114 else 115 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); 116 117 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); 118 if (ret) { 119 dev_err(&pdev->dev, 120 "fsl,mux-int-port node missing or invalid.\n"); 121 return ret; 122 } 123 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); 124 if (ret) { 125 dev_err(&pdev->dev, 126 "fsl,mux-ext-port node missing or invalid.\n"); 127 return ret; 128 } 129 130 /* 131 * The port numbering in the hardware manual starts at 1, while 132 * the audmux API expects it starts at 0. 133 */ 134 int_port--; 135 ext_port--; 136 137 eukrea_tlv320_dai.cpu_of_node = ssi_np; 138 eukrea_tlv320_dai.platform_of_node = ssi_np; 139 } else { 140 eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0"; 141 eukrea_tlv320_dai.platform_name = "imx-ssi.0"; 142 eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a"; 143 eukrea_tlv320.name = "cpuimx-audio"; 144 } 145 146 if (machine_is_eukrea_cpuimx27() || 147 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { 148 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 149 IMX_AUDMUX_V1_PCR_SYN | 150 IMX_AUDMUX_V1_PCR_TFSDIR | 151 IMX_AUDMUX_V1_PCR_TCLKDIR | 152 IMX_AUDMUX_V1_PCR_RFSDIR | 153 IMX_AUDMUX_V1_PCR_RCLKDIR | 154 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 155 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 156 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 157 ); 158 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 159 IMX_AUDMUX_V1_PCR_SYN | 160 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 161 ); 162 } else if (machine_is_eukrea_cpuimx25sd() || 163 machine_is_eukrea_cpuimx35sd() || 164 machine_is_eukrea_cpuimx51sd() || 165 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { 166 if (!np) 167 ext_port = machine_is_eukrea_cpuimx25sd() ? 168 4 : 3; 169 170 imx_audmux_v2_configure_port(int_port, 171 IMX_AUDMUX_V2_PTCR_SYN | 172 IMX_AUDMUX_V2_PTCR_TFSDIR | 173 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 174 IMX_AUDMUX_V2_PTCR_TCLKDIR | 175 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 176 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 177 ); 178 imx_audmux_v2_configure_port(ext_port, 179 IMX_AUDMUX_V2_PTCR_SYN, 180 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 181 ); 182 } else { 183 if (np) { 184 /* The eukrea,asoc-tlv320 driver was explicitly 185 * requested (through the device tree). 186 */ 187 dev_err(&pdev->dev, 188 "Missing or invalid audmux DT node.\n"); 189 return -ENODEV; 190 } else { 191 /* Return happy. 192 * We might run on a totally different machine. 193 */ 194 return 0; 195 } 196 } 197 198 ret = snd_soc_register_card(&eukrea_tlv320); 199 err: 200 if (ret) 201 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 202 of_node_put(ssi_np); 203 204 return ret; 205 } 206 207 static int eukrea_tlv320_remove(struct platform_device *pdev) 208 { 209 snd_soc_unregister_card(&eukrea_tlv320); 210 211 return 0; 212 } 213 214 static const struct of_device_id imx_tlv320_dt_ids[] = { 215 { .compatible = "eukrea,asoc-tlv320"}, 216 { /* sentinel */ } 217 }; 218 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 219 220 static struct platform_driver eukrea_tlv320_driver = { 221 .driver = { 222 .name = "eukrea_tlv320", 223 .of_match_table = imx_tlv320_dt_ids, 224 }, 225 .probe = eukrea_tlv320_probe, 226 .remove = eukrea_tlv320_remove, 227 }; 228 229 module_platform_driver(eukrea_tlv320_driver); 230 231 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 232 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 233 MODULE_LICENSE("GPL"); 234 MODULE_ALIAS("platform:eukrea_tlv320"); 235