soc/fsl/eukrea-tlv320.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 //
0003 // eukrea-tlv320.c  --  SoC audio for eukrea_cpuimxXX in I2S mode
0004 //
0005 // Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
0006 //
0007 // based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
0008 // which is Copyright 2009 Simtec Electronics
0009 // and on sound/soc/imx/phycore-ac97.c which is
0010 // Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
0011
0012 #include <linux/errno.h>
0013 #include <linux/module.h>
0014 #include <linux/moduleparam.h>
0015 #include <linux/of.h>
0016 #include <linux/of_platform.h>
0017 #include <linux/device.h>
0018 #include <linux/i2c.h>
0019 #include <sound/core.h>
0020 #include <sound/pcm.h>
0021 #include <sound/soc.h>
0022 #include <asm/mach-types.h>
0023
0024 #include "../codecs/tlv320aic23.h"
0025 #include "imx-ssi.h"
0026 #include "imx-audmux.h"
0027
0028 #define CODEC_CLOCK 12000000
0029
0030 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
0031                 struct snd_pcm_hw_params *params)
0032 {
0033     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0034     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0035     struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
0036     int ret;
0037
0038     ret = snd_soc_dai_set_sysclk(codec_dai, 0,
0039                      CODEC_CLOCK, SND_SOC_CLOCK_OUT);
0040     if (ret) {
0041         dev_err(cpu_dai->dev,
0042             "Failed to set the codec sysclk.\n");
0043         return ret;
0044     }
0045
0046     snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
0047
0048     ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
0049                 SND_SOC_CLOCK_IN);
0050     /* fsl_ssi lacks the set_sysclk ops */
0051     if (ret && ret != -EINVAL) {
0052         dev_err(cpu_dai->dev,
0053             "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
0054         return ret;
0055     }
0056
0057     return 0;
0058 }
0059
0060 static const struct snd_soc_ops eukrea_tlv320_snd_ops = {
0061     .hw_params  = eukrea_tlv320_hw_params,
0062 };
0063
0064 SND_SOC_DAILINK_DEFS(hifi,
0065     DAILINK_COMP_ARRAY(COMP_EMPTY()),
0066     DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi")),
0067     DAILINK_COMP_ARRAY(COMP_EMPTY()));
0068
0069 static struct snd_soc_dai_link eukrea_tlv320_dai = {
0070     .name       = "tlv320aic23",
0071     .stream_name    = "TLV320AIC23",
0072     .dai_fmt    = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
0073               SND_SOC_DAIFMT_CBP_CFP,
0074     .ops        = &eukrea_tlv320_snd_ops,
0075     SND_SOC_DAILINK_REG(hifi),
0076 };
0077
0078 static struct snd_soc_card eukrea_tlv320 = {
0079     .owner      = THIS_MODULE,
0080     .dai_link   = &eukrea_tlv320_dai,
0081     .num_links  = 1,
0082 };
0083
0084 static int eukrea_tlv320_probe(struct platform_device *pdev)
0085 {
0086     int ret;
0087     int int_port = 0, ext_port;
0088     struct device_node *np = pdev->dev.of_node;
0089     struct device_node *ssi_np = NULL, *codec_np = NULL;
0090
0091     eukrea_tlv320.dev = &pdev->dev;
0092     if (np) {
0093         ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
0094                          "eukrea,model");
0095         if (ret) {
0096             dev_err(&pdev->dev,
0097                 "eukrea,model node missing or invalid.\n");
0098             goto err;
0099         }
0100
0101         ssi_np = of_parse_phandle(pdev->dev.of_node,
0102                       "ssi-controller", 0);
0103         if (!ssi_np) {
0104             dev_err(&pdev->dev,
0105                 "ssi-controller missing or invalid.\n");
0106             ret = -ENODEV;
0107             goto err;
0108         }
0109
0110         codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
0111         if (codec_np)
0112             eukrea_tlv320_dai.codecs->of_node = codec_np;
0113         else
0114             dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");
0115
0116         ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
0117         if (ret) {
0118             dev_err(&pdev->dev,
0119                 "fsl,mux-int-port node missing or invalid.\n");
0120             goto err;
0121         }
0122         ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
0123         if (ret) {
0124             dev_err(&pdev->dev,
0125                 "fsl,mux-ext-port node missing or invalid.\n");
0126             goto err;
0127         }
0128
0129         /*
0130          * The port numbering in the hardware manual starts at 1, while
0131          * the audmux API expects it starts at 0.
0132          */
0133         int_port--;
0134         ext_port--;
0135
0136         eukrea_tlv320_dai.cpus->of_node = ssi_np;
0137         eukrea_tlv320_dai.platforms->of_node = ssi_np;
0138     } else {
0139         eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0";
0140         eukrea_tlv320_dai.platforms->name = "imx-ssi.0";
0141         eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a";
0142         eukrea_tlv320.name = "cpuimx-audio";
0143     }
0144
0145     if (machine_is_eukrea_cpuimx27() ||
0146         of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
0147         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
0148             IMX_AUDMUX_V1_PCR_SYN |
0149             IMX_AUDMUX_V1_PCR_TFSDIR |
0150             IMX_AUDMUX_V1_PCR_TCLKDIR |
0151             IMX_AUDMUX_V1_PCR_RFSDIR |
0152             IMX_AUDMUX_V1_PCR_RCLKDIR |
0153             IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
0154             IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
0155             IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
0156         );
0157         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
0158             IMX_AUDMUX_V1_PCR_SYN |
0159             IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
0160         );
0161     } else if (machine_is_eukrea_cpuimx25sd() ||
0162            machine_is_eukrea_cpuimx35sd() ||
0163            machine_is_eukrea_cpuimx51sd() ||
0164            of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
0165         if (!np)
0166             ext_port = machine_is_eukrea_cpuimx25sd() ?
0167                 4 : 3;
0168
0169         imx_audmux_v2_configure_port(int_port,
0170             IMX_AUDMUX_V2_PTCR_SYN |
0171             IMX_AUDMUX_V2_PTCR_TFSDIR |
0172             IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
0173             IMX_AUDMUX_V2_PTCR_TCLKDIR |
0174             IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
0175             IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
0176         );
0177         imx_audmux_v2_configure_port(ext_port,
0178             IMX_AUDMUX_V2_PTCR_SYN,
0179             IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
0180         );
0181     } else {
0182         if (np) {
0183             /* The eukrea,asoc-tlv320 driver was explicitly
0184              * requested (through the device tree).
0185              */
0186             dev_err(&pdev->dev,
0187                 "Missing or invalid audmux DT node.\n");
0188             return -ENODEV;
0189         } else {
0190             /* Return happy.
0191              * We might run on a totally different machine.
0192              */
0193             return 0;
0194         }
0195     }
0196
0197     ret = snd_soc_register_card(&eukrea_tlv320);
0198 err:
0199     if (ret)
0200         dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
0201     of_node_put(ssi_np);
0202
0203     return ret;
0204 }
0205
0206 static int eukrea_tlv320_remove(struct platform_device *pdev)
0207 {
0208     snd_soc_unregister_card(&eukrea_tlv320);
0209
0210     return 0;
0211 }
0212
0213 static const struct of_device_id imx_tlv320_dt_ids[] = {
0214     { .compatible = "eukrea,asoc-tlv320"},
0215     { /* sentinel */ }
0216 };
0217 MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
0218
0219 static struct platform_driver eukrea_tlv320_driver = {
0220     .driver = {
0221         .name = "eukrea_tlv320",
0222         .of_match_table = imx_tlv320_dt_ids,
0223     },
0224     .probe = eukrea_tlv320_probe,
0225     .remove = eukrea_tlv320_remove,
0226 };
0227
0228 module_platform_driver(eukrea_tlv320_driver);
0229
0230 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
0231 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
0232 MODULE_LICENSE("GPL");
0233 MODULE_ALIAS("platform:eukrea_tlv320");