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 SND_SOC_DAILINK_DEFS(hifi, 65 DAILINK_COMP_ARRAY(COMP_EMPTY()), 66 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi"))); 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_CBM_CFM, 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; 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 } else { 137 eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0"; 138 eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a"; 139 eukrea_tlv320.name = "cpuimx-audio"; 140 } 141 142 if (machine_is_eukrea_cpuimx27() || 143 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { 144 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 145 IMX_AUDMUX_V1_PCR_SYN | 146 IMX_AUDMUX_V1_PCR_TFSDIR | 147 IMX_AUDMUX_V1_PCR_TCLKDIR | 148 IMX_AUDMUX_V1_PCR_RFSDIR | 149 IMX_AUDMUX_V1_PCR_RCLKDIR | 150 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 151 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 152 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 153 ); 154 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 155 IMX_AUDMUX_V1_PCR_SYN | 156 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 157 ); 158 } else if (machine_is_eukrea_cpuimx25sd() || 159 machine_is_eukrea_cpuimx35sd() || 160 machine_is_eukrea_cpuimx51sd() || 161 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { 162 if (!np) 163 ext_port = machine_is_eukrea_cpuimx25sd() ? 164 4 : 3; 165 166 imx_audmux_v2_configure_port(int_port, 167 IMX_AUDMUX_V2_PTCR_SYN | 168 IMX_AUDMUX_V2_PTCR_TFSDIR | 169 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 170 IMX_AUDMUX_V2_PTCR_TCLKDIR | 171 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), 172 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) 173 ); 174 imx_audmux_v2_configure_port(ext_port, 175 IMX_AUDMUX_V2_PTCR_SYN, 176 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) 177 ); 178 } else { 179 if (np) { 180 /* The eukrea,asoc-tlv320 driver was explicitly 181 * requested (through the device tree). 182 */ 183 dev_err(&pdev->dev, 184 "Missing or invalid audmux DT node.\n"); 185 return -ENODEV; 186 } else { 187 /* Return happy. 188 * We might run on a totally different machine. 189 */ 190 return 0; 191 } 192 } 193 194 ret = snd_soc_register_card(&eukrea_tlv320); 195 err: 196 if (ret) 197 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 198 of_node_put(ssi_np); 199 200 return ret; 201 } 202 203 static int eukrea_tlv320_remove(struct platform_device *pdev) 204 { 205 snd_soc_unregister_card(&eukrea_tlv320); 206 207 return 0; 208 } 209 210 static const struct of_device_id imx_tlv320_dt_ids[] = { 211 { .compatible = "eukrea,asoc-tlv320"}, 212 { /* sentinel */ } 213 }; 214 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 215 216 static struct platform_driver eukrea_tlv320_driver = { 217 .driver = { 218 .name = "eukrea_tlv320", 219 .of_match_table = imx_tlv320_dt_ids, 220 }, 221 .probe = eukrea_tlv320_probe, 222 .remove = eukrea_tlv320_remove, 223 }; 224 225 module_platform_driver(eukrea_tlv320_driver); 226 227 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 228 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 229 MODULE_LICENSE("GPL"); 230 MODULE_ALIAS("platform:eukrea_tlv320"); 231