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 "fsl_ssi.h" 33 #include "imx-audmux.h" 34 35 #define CODEC_CLOCK 12000000 36 37 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, 38 struct snd_pcm_hw_params *params) 39 { 40 struct snd_soc_pcm_runtime *rtd = substream->private_data; 41 struct snd_soc_dai *codec_dai = rtd->codec_dai; 42 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 43 int ret; 44 45 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | 46 SND_SOC_DAIFMT_NB_NF | 47 SND_SOC_DAIFMT_CBM_CFM); 48 /* fsl_ssi lacks the set_fmt ops. */ 49 if (ret && ret != -ENOTSUPP) { 50 dev_err(cpu_dai->dev, 51 "Failed to set the cpu dai format.\n"); 52 return ret; 53 } 54 55 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 56 SND_SOC_DAIFMT_NB_NF | 57 SND_SOC_DAIFMT_CBM_CFM); 58 if (ret) { 59 dev_err(cpu_dai->dev, 60 "Failed to set the codec format.\n"); 61 return ret; 62 } 63 64 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 65 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 66 if (ret) { 67 dev_err(cpu_dai->dev, 68 "Failed to set the codec sysclk.\n"); 69 return ret; 70 } 71 72 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); 73 74 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 75 SND_SOC_CLOCK_IN); 76 /* fsl_ssi lacks the set_sysclk ops */ 77 if (ret && ret != -EINVAL) { 78 dev_err(cpu_dai->dev, 79 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); 80 return ret; 81 } 82 83 return 0; 84 } 85 86 static struct snd_soc_ops eukrea_tlv320_snd_ops = { 87 .hw_params = eukrea_tlv320_hw_params, 88 }; 89 90 static struct snd_soc_dai_link eukrea_tlv320_dai = { 91 .name = "tlv320aic23", 92 .stream_name = "TLV320AIC23", 93 .codec_dai_name = "tlv320aic23-hifi", 94 .ops = &eukrea_tlv320_snd_ops, 95 }; 96 97 static struct snd_soc_card eukrea_tlv320 = { 98 .owner = THIS_MODULE, 99 .dai_link = &eukrea_tlv320_dai, 100 .num_links = 1, 101 }; 102 103 static int eukrea_tlv320_probe(struct platform_device *pdev) 104 { 105 int ret; 106 int int_port = 0, ext_port; 107 struct device_node *np = pdev->dev.of_node; 108 struct device_node *ssi_np, *codec_np; 109 110 eukrea_tlv320.dev = &pdev->dev; 111 if (np) { 112 ret = snd_soc_of_parse_card_name(&eukrea_tlv320, 113 "eukrea,model"); 114 if (ret) { 115 dev_err(&pdev->dev, 116 "eukrea,model node missing or invalid.\n"); 117 goto err; 118 } 119 120 ssi_np = of_parse_phandle(pdev->dev.of_node, 121 "ssi-controller", 0); 122 if (!ssi_np) { 123 dev_err(&pdev->dev, 124 "ssi-controller missing or invalid.\n"); 125 ret = -ENODEV; 126 goto err; 127 } 128 129 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); 130 if (codec_np) 131 eukrea_tlv320_dai.codec_of_node = codec_np; 132 else 133 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); 134 135 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); 136 if (ret) { 137 dev_err(&pdev->dev, 138 "fsl,mux-int-port node missing or invalid.\n"); 139 return ret; 140 } 141 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); 142 if (ret) { 143 dev_err(&pdev->dev, 144 "fsl,mux-ext-port node missing or invalid.\n"); 145 return ret; 146 } 147 148 /* 149 * The port numbering in the hardware manual starts at 1, while 150 * the audmux API expects it starts at 0. 151 */ 152 int_port--; 153 ext_port--; 154 155 eukrea_tlv320_dai.cpu_of_node = ssi_np; 156 eukrea_tlv320_dai.platform_of_node = ssi_np; 157 } else { 158 eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0"; 159 eukrea_tlv320_dai.platform_name = "imx-ssi.0"; 160 eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a"; 161 eukrea_tlv320.name = "cpuimx-audio"; 162 } 163 164 if (machine_is_eukrea_cpuimx27() || 165 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { 166 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 167 IMX_AUDMUX_V1_PCR_SYN | 168 IMX_AUDMUX_V1_PCR_TFSDIR | 169 IMX_AUDMUX_V1_PCR_TCLKDIR | 170 IMX_AUDMUX_V1_PCR_RFSDIR | 171 IMX_AUDMUX_V1_PCR_RCLKDIR | 172 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 173 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 174 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 175 ); 176 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 177 IMX_AUDMUX_V1_PCR_SYN | 178 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 179 ); 180 } else if (machine_is_eukrea_cpuimx25sd() || 181 machine_is_eukrea_cpuimx35sd() || 182 machine_is_eukrea_cpuimx51sd() || 183 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { 184 if (!np) 185 ext_port = machine_is_eukrea_cpuimx25sd() ? 186 4 : 3; 187 188 imx_audmux_v2_configure_port(int_port, 189 IMX_AUDMUX_V2_PTCR_SYN | 190 IMX_AUDMUX_V2_PTCR_TFSDIR | 191 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 192 IMX_AUDMUX_V2_PTCR_TCLKDIR | 193 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 194 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 195 ); 196 imx_audmux_v2_configure_port(ext_port, 197 IMX_AUDMUX_V2_PTCR_SYN, 198 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 199 ); 200 } else { 201 if (np) { 202 /* The eukrea,asoc-tlv320 driver was explicitely 203 * requested (through the device tree). 204 */ 205 dev_err(&pdev->dev, 206 "Missing or invalid audmux DT node.\n"); 207 return -ENODEV; 208 } else { 209 /* Return happy. 210 * We might run on a totally different machine. 211 */ 212 return 0; 213 } 214 } 215 216 ret = snd_soc_register_card(&eukrea_tlv320); 217 err: 218 if (ret) 219 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 220 if (np) 221 of_node_put(ssi_np); 222 223 return ret; 224 } 225 226 static int eukrea_tlv320_remove(struct platform_device *pdev) 227 { 228 snd_soc_unregister_card(&eukrea_tlv320); 229 230 return 0; 231 } 232 233 static const struct of_device_id imx_tlv320_dt_ids[] = { 234 { .compatible = "eukrea,asoc-tlv320"}, 235 { /* sentinel */ } 236 }; 237 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 238 239 static struct platform_driver eukrea_tlv320_driver = { 240 .driver = { 241 .name = "eukrea_tlv320", 242 .owner = THIS_MODULE, 243 .of_match_table = imx_tlv320_dt_ids, 244 }, 245 .probe = eukrea_tlv320_probe, 246 .remove = eukrea_tlv320_remove, 247 }; 248 249 module_platform_driver(eukrea_tlv320_driver); 250 251 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 252 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 253 MODULE_LICENSE("GPL"); 254 MODULE_ALIAS("platform:eukrea_tlv320"); 255