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 23 #include "../codecs/tlv320aic23.h" 24 #include "imx-ssi.h" 25 #include "imx-audmux.h" 26 27 #define CODEC_CLOCK 12000000 28 29 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, 30 struct snd_pcm_hw_params *params) 31 { 32 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 33 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); 34 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 35 int ret; 36 37 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 38 CODEC_CLOCK, SND_SOC_CLOCK_OUT); 39 if (ret) { 40 dev_err(cpu_dai->dev, 41 "Failed to set the codec sysclk.\n"); 42 return ret; 43 } 44 45 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); 46 47 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, 48 SND_SOC_CLOCK_IN); 49 /* fsl_ssi lacks the set_sysclk ops */ 50 if (ret && ret != -EINVAL) { 51 dev_err(cpu_dai->dev, 52 "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); 53 return ret; 54 } 55 56 return 0; 57 } 58 59 static const struct snd_soc_ops eukrea_tlv320_snd_ops = { 60 .hw_params = eukrea_tlv320_hw_params, 61 }; 62 63 SND_SOC_DAILINK_DEFS(hifi, 64 DAILINK_COMP_ARRAY(COMP_EMPTY()), 65 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi")), 66 DAILINK_COMP_ARRAY(COMP_EMPTY())); 67 68 static struct snd_soc_dai_link eukrea_tlv320_dai = { 69 .name = "tlv320aic23", 70 .stream_name = "TLV320AIC23", 71 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 72 SND_SOC_DAIFMT_CBP_CFP, 73 .ops = &eukrea_tlv320_snd_ops, 74 SND_SOC_DAILINK_REG(hifi), 75 }; 76 77 static struct snd_soc_card eukrea_tlv320 = { 78 .owner = THIS_MODULE, 79 .dai_link = &eukrea_tlv320_dai, 80 .num_links = 1, 81 }; 82 83 static int eukrea_tlv320_probe(struct platform_device *pdev) 84 { 85 int ret; 86 int int_port = 0, ext_port; 87 struct device_node *np = pdev->dev.of_node; 88 struct device_node *ssi_np = NULL, *codec_np = NULL, *tmp_np = NULL; 89 90 eukrea_tlv320.dev = &pdev->dev; 91 if (np) { 92 ret = snd_soc_of_parse_card_name(&eukrea_tlv320, 93 "eukrea,model"); 94 if (ret) { 95 dev_err(&pdev->dev, 96 "eukrea,model node missing or invalid.\n"); 97 goto err; 98 } 99 100 ssi_np = of_parse_phandle(pdev->dev.of_node, 101 "ssi-controller", 0); 102 if (!ssi_np) { 103 dev_err(&pdev->dev, 104 "ssi-controller missing or invalid.\n"); 105 ret = -ENODEV; 106 goto err; 107 } 108 109 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); 110 if (codec_np) 111 eukrea_tlv320_dai.codecs->of_node = codec_np; 112 else 113 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); 114 115 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); 116 if (ret) { 117 dev_err(&pdev->dev, 118 "fsl,mux-int-port node missing or invalid.\n"); 119 goto err; 120 } 121 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); 122 if (ret) { 123 dev_err(&pdev->dev, 124 "fsl,mux-ext-port node missing or invalid.\n"); 125 goto err; 126 } 127 128 /* 129 * The port numbering in the hardware manual starts at 1, while 130 * the audmux API expects it starts at 0. 131 */ 132 int_port--; 133 ext_port--; 134 135 eukrea_tlv320_dai.cpus->of_node = ssi_np; 136 eukrea_tlv320_dai.platforms->of_node = ssi_np; 137 } else { 138 eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0"; 139 eukrea_tlv320_dai.platforms->name = "imx-ssi.0"; 140 eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a"; 141 eukrea_tlv320.name = "cpuimx-audio"; 142 } 143 144 if (of_machine_is_compatible("eukrea,cpuimx27") || 145 (tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux"))) { 146 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 147 IMX_AUDMUX_V1_PCR_SYN | 148 IMX_AUDMUX_V1_PCR_TFSDIR | 149 IMX_AUDMUX_V1_PCR_TCLKDIR | 150 IMX_AUDMUX_V1_PCR_RFSDIR | 151 IMX_AUDMUX_V1_PCR_RCLKDIR | 152 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 153 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 154 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 155 ); 156 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 157 IMX_AUDMUX_V1_PCR_SYN | 158 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 159 ); 160 of_node_put(tmp_np); 161 } else if (of_machine_is_compatible("eukrea,cpuimx25") || 162 of_machine_is_compatible("eukrea,cpuimx35") || 163 of_machine_is_compatible("eukrea,cpuimx51") || 164 (tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux"))) { 165 if (!np) 166 ext_port = of_machine_is_compatible("eukrea,cpuimx25") ? 167 4 : 3; 168 169 imx_audmux_v2_configure_port(int_port, 170 IMX_AUDMUX_V2_PTCR_SYN | 171 IMX_AUDMUX_V2_PTCR_TFSDIR | 172 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 173 IMX_AUDMUX_V2_PTCR_TCLKDIR | 174 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 175 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 176 ); 177 imx_audmux_v2_configure_port(ext_port, 178 IMX_AUDMUX_V2_PTCR_SYN, 179 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 180 ); 181 of_node_put(tmp_np); 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 = devm_snd_soc_register_card(&pdev->dev, &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 const struct of_device_id imx_tlv320_dt_ids[] = { 208 { .compatible = "eukrea,asoc-tlv320"}, 209 { /* sentinel */ } 210 }; 211 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 212 213 static struct platform_driver eukrea_tlv320_driver = { 214 .driver = { 215 .name = "eukrea_tlv320", 216 .of_match_table = imx_tlv320_dt_ids, 217 }, 218 .probe = eukrea_tlv320_probe, 219 }; 220 221 module_platform_driver(eukrea_tlv320_driver); 222 223 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 224 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 225 MODULE_LICENSE("GPL"); 226 MODULE_ALIAS("platform:eukrea_tlv320"); 227