1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode 4 // 5 // Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> 6 // 7 // based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c 8 // which is Copyright 2009 Simtec Electronics 9 // and on sound/soc/imx/phycore-ac97.c which is 10 // Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> 11 12 #include <linux/errno.h> 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/of.h> 16 #include <linux/of_platform.h> 17 #include <linux/device.h> 18 #include <linux/i2c.h> 19 #include <sound/core.h> 20 #include <sound/pcm.h> 21 #include <sound/soc.h> 22 #include <asm/mach-types.h> 23 24 #include "../codecs/tlv320aic23.h" 25 #include "imx-ssi.h" 26 #include "imx-audmux.h" 27 28 #define CODEC_CLOCK 12000000 29 30 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, 31 struct snd_pcm_hw_params *params) 32 { 33 struct snd_soc_pcm_runtime *rtd = substream->private_data; 34 struct snd_soc_dai *codec_dai = rtd->codec_dai; 35 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 36 int ret; 37 38 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 39 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 40 if (ret) { 41 dev_err(cpu_dai->dev, 42 "Failed to set the codec sysclk.\n"); 43 return ret; 44 } 45 46 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); 47 48 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 49 SND_SOC_CLOCK_IN); 50 /* fsl_ssi lacks the set_sysclk ops */ 51 if (ret && ret != -EINVAL) { 52 dev_err(cpu_dai->dev, 53 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); 54 return ret; 55 } 56 57 return 0; 58 } 59 60 static const struct snd_soc_ops eukrea_tlv320_snd_ops = { 61 .hw_params = eukrea_tlv320_hw_params, 62 }; 63 64 static struct snd_soc_dai_link eukrea_tlv320_dai = { 65 .name = "tlv320aic23", 66 .stream_name = "TLV320AIC23", 67 .codec_dai_name = "tlv320aic23-hifi", 68 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 69 SND_SOC_DAIFMT_CBM_CFM, 70 .ops = &eukrea_tlv320_snd_ops, 71 }; 72 73 static struct snd_soc_card eukrea_tlv320 = { 74 .owner = THIS_MODULE, 75 .dai_link = &eukrea_tlv320_dai, 76 .num_links = 1, 77 }; 78 79 static int eukrea_tlv320_probe(struct platform_device *pdev) 80 { 81 int ret; 82 int int_port = 0, ext_port; 83 struct device_node *np = pdev->dev.of_node; 84 struct device_node *ssi_np = NULL, *codec_np = NULL; 85 86 eukrea_tlv320.dev = &pdev->dev; 87 if (np) { 88 ret = snd_soc_of_parse_card_name(&eukrea_tlv320, 89 "eukrea,model"); 90 if (ret) { 91 dev_err(&pdev->dev, 92 "eukrea,model node missing or invalid.\n"); 93 goto err; 94 } 95 96 ssi_np = of_parse_phandle(pdev->dev.of_node, 97 "ssi-controller", 0); 98 if (!ssi_np) { 99 dev_err(&pdev->dev, 100 "ssi-controller missing or invalid.\n"); 101 ret = -ENODEV; 102 goto err; 103 } 104 105 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); 106 if (codec_np) 107 eukrea_tlv320_dai.codec_of_node = codec_np; 108 else 109 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); 110 111 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); 112 if (ret) { 113 dev_err(&pdev->dev, 114 "fsl,mux-int-port node missing or invalid.\n"); 115 goto err; 116 } 117 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); 118 if (ret) { 119 dev_err(&pdev->dev, 120 "fsl,mux-ext-port node missing or invalid.\n"); 121 goto err; 122 } 123 124 /* 125 * The port numbering in the hardware manual starts at 1, while 126 * the audmux API expects it starts at 0. 127 */ 128 int_port--; 129 ext_port--; 130 131 eukrea_tlv320_dai.cpu_of_node = ssi_np; 132 eukrea_tlv320_dai.platform_of_node = ssi_np; 133 } else { 134 eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0"; 135 eukrea_tlv320_dai.platform_name = "imx-ssi.0"; 136 eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a"; 137 eukrea_tlv320.name = "cpuimx-audio"; 138 } 139 140 if (machine_is_eukrea_cpuimx27() || 141 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { 142 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 143 IMX_AUDMUX_V1_PCR_SYN | 144 IMX_AUDMUX_V1_PCR_TFSDIR | 145 IMX_AUDMUX_V1_PCR_TCLKDIR | 146 IMX_AUDMUX_V1_PCR_RFSDIR | 147 IMX_AUDMUX_V1_PCR_RCLKDIR | 148 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 149 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 150 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 151 ); 152 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 153 IMX_AUDMUX_V1_PCR_SYN | 154 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 155 ); 156 } else if (machine_is_eukrea_cpuimx25sd() || 157 machine_is_eukrea_cpuimx35sd() || 158 machine_is_eukrea_cpuimx51sd() || 159 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { 160 if (!np) 161 ext_port = machine_is_eukrea_cpuimx25sd() ? 162 4 : 3; 163 164 imx_audmux_v2_configure_port(int_port, 165 IMX_AUDMUX_V2_PTCR_SYN | 166 IMX_AUDMUX_V2_PTCR_TFSDIR | 167 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 168 IMX_AUDMUX_V2_PTCR_TCLKDIR | 169 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 170 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 171 ); 172 imx_audmux_v2_configure_port(ext_port, 173 IMX_AUDMUX_V2_PTCR_SYN, 174 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 175 ); 176 } else { 177 if (np) { 178 /* The eukrea,asoc-tlv320 driver was explicitly 179 * requested (through the device tree). 180 */ 181 dev_err(&pdev->dev, 182 "Missing or invalid audmux DT node.\n"); 183 return -ENODEV; 184 } else { 185 /* Return happy. 186 * We might run on a totally different machine. 187 */ 188 return 0; 189 } 190 } 191 192 ret = snd_soc_register_card(&eukrea_tlv320); 193 err: 194 if (ret) 195 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 196 of_node_put(ssi_np); 197 198 return ret; 199 } 200 201 static int eukrea_tlv320_remove(struct platform_device *pdev) 202 { 203 snd_soc_unregister_card(&eukrea_tlv320); 204 205 return 0; 206 } 207 208 static const struct of_device_id imx_tlv320_dt_ids[] = { 209 { .compatible = "eukrea,asoc-tlv320"}, 210 { /* sentinel */ } 211 }; 212 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 213 214 static struct platform_driver eukrea_tlv320_driver = { 215 .driver = { 216 .name = "eukrea_tlv320", 217 .of_match_table = imx_tlv320_dt_ids, 218 }, 219 .probe = eukrea_tlv320_probe, 220 .remove = eukrea_tlv320_remove, 221 }; 222 223 module_platform_driver(eukrea_tlv320_driver); 224 225 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 226 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 227 MODULE_LICENSE("GPL"); 228 MODULE_ALIAS("platform:eukrea_tlv320"); 229