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 = asoc_substream_to_rtd(substream); 34 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 35 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 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 DAILINK_COMP_ARRAY(COMP_EMPTY())); 68 69 static struct snd_soc_dai_link eukrea_tlv320_dai = { 70 .name = "tlv320aic23", 71 .stream_name = "TLV320AIC23", 72 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 73 SND_SOC_DAIFMT_CBP_CFP, 74 .ops = &eukrea_tlv320_snd_ops, 75 SND_SOC_DAILINK_REG(hifi), 76 }; 77 78 static struct snd_soc_card eukrea_tlv320 = { 79 .owner = THIS_MODULE, 80 .dai_link = &eukrea_tlv320_dai, 81 .num_links = 1, 82 }; 83 84 static int eukrea_tlv320_probe(struct platform_device *pdev) 85 { 86 int ret; 87 int int_port = 0, ext_port; 88 struct device_node *np = pdev->dev.of_node; 89 struct device_node *ssi_np = NULL, *codec_np = NULL; 90 91 eukrea_tlv320.dev = &pdev->dev; 92 if (np) { 93 ret = snd_soc_of_parse_card_name(&eukrea_tlv320, 94 "eukrea,model"); 95 if (ret) { 96 dev_err(&pdev->dev, 97 "eukrea,model node missing or invalid.\n"); 98 goto err; 99 } 100 101 ssi_np = of_parse_phandle(pdev->dev.of_node, 102 "ssi-controller", 0); 103 if (!ssi_np) { 104 dev_err(&pdev->dev, 105 "ssi-controller missing or invalid.\n"); 106 ret = -ENODEV; 107 goto err; 108 } 109 110 codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); 111 if (codec_np) 112 eukrea_tlv320_dai.codecs->of_node = codec_np; 113 else 114 dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); 115 116 ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); 117 if (ret) { 118 dev_err(&pdev->dev, 119 "fsl,mux-int-port node missing or invalid.\n"); 120 goto err; 121 } 122 ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); 123 if (ret) { 124 dev_err(&pdev->dev, 125 "fsl,mux-ext-port node missing or invalid.\n"); 126 goto err; 127 } 128 129 /* 130 * The port numbering in the hardware manual starts at 1, while 131 * the audmux API expects it starts at 0. 132 */ 133 int_port--; 134 ext_port--; 135 136 eukrea_tlv320_dai.cpus->of_node = ssi_np; 137 eukrea_tlv320_dai.platforms->of_node = ssi_np; 138 } else { 139 eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0"; 140 eukrea_tlv320_dai.platforms->name = "imx-ssi.0"; 141 eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a"; 142 eukrea_tlv320.name = "cpuimx-audio"; 143 } 144 145 if (machine_is_eukrea_cpuimx27() || 146 of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { 147 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, 148 IMX_AUDMUX_V1_PCR_SYN | 149 IMX_AUDMUX_V1_PCR_TFSDIR | 150 IMX_AUDMUX_V1_PCR_TCLKDIR | 151 IMX_AUDMUX_V1_PCR_RFSDIR | 152 IMX_AUDMUX_V1_PCR_RCLKDIR | 153 IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 154 IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | 155 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) 156 ); 157 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, 158 IMX_AUDMUX_V1_PCR_SYN | 159 IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) 160 ); 161 } else if (machine_is_eukrea_cpuimx25sd() || 162 machine_is_eukrea_cpuimx35sd() || 163 machine_is_eukrea_cpuimx51sd() || 164 of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { 165 if (!np) 166 ext_port = machine_is_eukrea_cpuimx25sd() ? 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 } else { 182 if (np) { 183 /* The eukrea,asoc-tlv320 driver was explicitly 184 * requested (through the device tree). 185 */ 186 dev_err(&pdev->dev, 187 "Missing or invalid audmux DT node.\n"); 188 return -ENODEV; 189 } else { 190 /* Return happy. 191 * We might run on a totally different machine. 192 */ 193 return 0; 194 } 195 } 196 197 ret = snd_soc_register_card(&eukrea_tlv320); 198 err: 199 if (ret) 200 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 201 of_node_put(ssi_np); 202 203 return ret; 204 } 205 206 static int eukrea_tlv320_remove(struct platform_device *pdev) 207 { 208 snd_soc_unregister_card(&eukrea_tlv320); 209 210 return 0; 211 } 212 213 static const struct of_device_id imx_tlv320_dt_ids[] = { 214 { .compatible = "eukrea,asoc-tlv320"}, 215 { /* sentinel */ } 216 }; 217 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); 218 219 static struct platform_driver eukrea_tlv320_driver = { 220 .driver = { 221 .name = "eukrea_tlv320", 222 .of_match_table = imx_tlv320_dt_ids, 223 }, 224 .probe = eukrea_tlv320_probe, 225 .remove = eukrea_tlv320_remove, 226 }; 227 228 module_platform_driver(eukrea_tlv320_driver); 229 230 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); 231 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); 232 MODULE_LICENSE("GPL"); 233 MODULE_ALIAS("platform:eukrea_tlv320"); 234