sound/soc/fsl/eukrea-tlv320.c

   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 = 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_CBM_CFM,
  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");