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1// SPDX-License-Identifier: GPL-2.0+2//3// eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode4//5// Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>6//7// based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c8// which is Copyright 2009 Simtec Electronics9// and on sound/soc/imx/phycore-ac97.c which is10// 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 1200000029 30static 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 = snd_soc_substream_to_rtd(substream);34 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);35 struct snd_soc_dai *cpu_dai = snd_soc_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 60static const struct snd_soc_ops eukrea_tlv320_snd_ops = {61 .hw_params = eukrea_tlv320_hw_params,62};63 64SND_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 69static 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 78static struct snd_soc_card eukrea_tlv320 = {79 .owner = THIS_MODULE,80 .dai_link = &eukrea_tlv320_dai,81 .num_links = 1,82};83 84static 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, *tmp_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 else114 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, while131 * 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 (tmp_np = 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 of_node_put(tmp_np);162 } else if (machine_is_eukrea_cpuimx25sd() ||163 machine_is_eukrea_cpuimx35sd() ||164 machine_is_eukrea_cpuimx51sd() ||165 (tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux"))) {166 if (!np)167 ext_port = machine_is_eukrea_cpuimx25sd() ?168 4 : 3;169 170 imx_audmux_v2_configure_port(int_port,171 IMX_AUDMUX_V2_PTCR_SYN |172 IMX_AUDMUX_V2_PTCR_TFSDIR |173 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |174 IMX_AUDMUX_V2_PTCR_TCLKDIR |175 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),176 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)177 );178 imx_audmux_v2_configure_port(ext_port,179 IMX_AUDMUX_V2_PTCR_SYN,180 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)181 );182 of_node_put(tmp_np);183 } else {184 if (np) {185 /* The eukrea,asoc-tlv320 driver was explicitly186 * requested (through the device tree).187 */188 dev_err(&pdev->dev,189 "Missing or invalid audmux DT node.\n");190 return -ENODEV;191 } else {192 /* Return happy.193 * We might run on a totally different machine.194 */195 return 0;196 }197 }198 199 ret = devm_snd_soc_register_card(&pdev->dev, &eukrea_tlv320);200err:201 if (ret)202 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);203 of_node_put(ssi_np);204 205 return ret;206}207 208static const struct of_device_id imx_tlv320_dt_ids[] = {209 { .compatible = "eukrea,asoc-tlv320"},210 { /* sentinel */ }211};212MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);213 214static struct platform_driver eukrea_tlv320_driver = {215 .driver = {216 .name = "eukrea_tlv320",217 .of_match_table = imx_tlv320_dt_ids,218 },219 .probe = eukrea_tlv320_probe,220};221 222module_platform_driver(eukrea_tlv320_driver);223 224MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");225MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");226MODULE_LICENSE("GPL");227MODULE_ALIAS("platform:eukrea_tlv320");228