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1// SPDX-License-Identifier: GPL-2.0+2//3// Copyright 2012 Freescale Semiconductor, Inc.4// Copyright 2012 Linaro Ltd.5 6#include <linux/module.h>7#include <linux/of.h>8#include <linux/of_platform.h>9#include <linux/i2c.h>10#include <linux/clk.h>11#include <sound/soc.h>12 13#include "../codecs/sgtl5000.h"14#include "imx-audmux.h"15 16#define DAI_NAME_SIZE 3217 18struct imx_sgtl5000_data {19 struct snd_soc_dai_link dai;20 struct snd_soc_card card;21 char codec_dai_name[DAI_NAME_SIZE];22 char platform_name[DAI_NAME_SIZE];23 struct clk *codec_clk;24 unsigned int clk_frequency;25};26 27static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)28{29 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card);30 struct device *dev = rtd->card->dev;31 int ret;32 33 ret = snd_soc_dai_set_sysclk(snd_soc_rtd_to_codec(rtd, 0), SGTL5000_SYSCLK,34 data->clk_frequency, SND_SOC_CLOCK_IN);35 if (ret) {36 dev_err(dev, "could not set codec driver clock params\n");37 return ret;38 }39 40 return 0;41}42 43static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {44 SND_SOC_DAPM_MIC("Mic Jack", NULL),45 SND_SOC_DAPM_LINE("Line In Jack", NULL),46 SND_SOC_DAPM_HP("Headphone Jack", NULL),47 SND_SOC_DAPM_SPK("Line Out Jack", NULL),48 SND_SOC_DAPM_SPK("Ext Spk", NULL),49};50 51static int imx_sgtl5000_probe(struct platform_device *pdev)52{53 struct device_node *np = pdev->dev.of_node;54 struct device_node *ssi_np, *codec_np;55 struct platform_device *ssi_pdev;56 struct i2c_client *codec_dev;57 struct imx_sgtl5000_data *data = NULL;58 struct snd_soc_dai_link_component *comp;59 int int_port, ext_port;60 int ret;61 62 ret = of_property_read_u32(np, "mux-int-port", &int_port);63 if (ret) {64 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");65 return ret;66 }67 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);68 if (ret) {69 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");70 return ret;71 }72 73 /*74 * The port numbering in the hardware manual starts at 1, while75 * the audmux API expects it starts at 0.76 */77 int_port--;78 ext_port--;79 ret = imx_audmux_v2_configure_port(int_port,80 IMX_AUDMUX_V2_PTCR_SYN |81 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |82 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |83 IMX_AUDMUX_V2_PTCR_TFSDIR |84 IMX_AUDMUX_V2_PTCR_TCLKDIR,85 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));86 if (ret) {87 dev_err(&pdev->dev, "audmux internal port setup failed\n");88 return ret;89 }90 ret = imx_audmux_v2_configure_port(ext_port,91 IMX_AUDMUX_V2_PTCR_SYN,92 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));93 if (ret) {94 dev_err(&pdev->dev, "audmux external port setup failed\n");95 return ret;96 }97 98 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);99 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);100 if (!ssi_np || !codec_np) {101 dev_err(&pdev->dev, "phandle missing or invalid\n");102 ret = -EINVAL;103 goto fail;104 }105 106 ssi_pdev = of_find_device_by_node(ssi_np);107 if (!ssi_pdev) {108 dev_dbg(&pdev->dev, "failed to find SSI platform device\n");109 ret = -EPROBE_DEFER;110 goto fail;111 }112 put_device(&ssi_pdev->dev);113 codec_dev = of_find_i2c_device_by_node(codec_np);114 if (!codec_dev) {115 dev_dbg(&pdev->dev, "failed to find codec platform device\n");116 ret = -EPROBE_DEFER;117 goto fail;118 }119 120 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);121 if (!data) {122 ret = -ENOMEM;123 goto put_device;124 }125 126 comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);127 if (!comp) {128 ret = -ENOMEM;129 goto put_device;130 }131 132 data->codec_clk = clk_get(&codec_dev->dev, NULL);133 if (IS_ERR(data->codec_clk)) {134 ret = PTR_ERR(data->codec_clk);135 goto put_device;136 }137 138 data->clk_frequency = clk_get_rate(data->codec_clk);139 140 data->dai.cpus = &comp[0];141 data->dai.codecs = &comp[1];142 data->dai.platforms = &comp[2];143 144 data->dai.num_cpus = 1;145 data->dai.num_codecs = 1;146 data->dai.num_platforms = 1;147 148 data->dai.name = "HiFi";149 data->dai.stream_name = "HiFi";150 data->dai.codecs->dai_name = "sgtl5000";151 data->dai.codecs->of_node = codec_np;152 data->dai.cpus->of_node = ssi_np;153 data->dai.platforms->of_node = ssi_np;154 data->dai.init = &imx_sgtl5000_dai_init;155 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |156 SND_SOC_DAIFMT_CBP_CFP;157 158 data->card.dev = &pdev->dev;159 ret = snd_soc_of_parse_card_name(&data->card, "model");160 if (ret)161 goto put_device;162 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");163 if (ret)164 goto put_device;165 data->card.num_links = 1;166 data->card.owner = THIS_MODULE;167 data->card.dai_link = &data->dai;168 data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;169 data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);170 171 platform_set_drvdata(pdev, &data->card);172 snd_soc_card_set_drvdata(&data->card, data);173 174 ret = devm_snd_soc_register_card(&pdev->dev, &data->card);175 if (ret) {176 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");177 goto put_device;178 }179 180 of_node_put(ssi_np);181 of_node_put(codec_np);182 183 return 0;184 185put_device:186 put_device(&codec_dev->dev);187fail:188 if (data && !IS_ERR(data->codec_clk))189 clk_put(data->codec_clk);190 of_node_put(ssi_np);191 of_node_put(codec_np);192 193 return ret;194}195 196static void imx_sgtl5000_remove(struct platform_device *pdev)197{198 struct snd_soc_card *card = platform_get_drvdata(pdev);199 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);200 201 clk_put(data->codec_clk);202}203 204static const struct of_device_id imx_sgtl5000_dt_ids[] = {205 { .compatible = "fsl,imx-audio-sgtl5000", },206 { /* sentinel */ }207};208MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);209 210static struct platform_driver imx_sgtl5000_driver = {211 .driver = {212 .name = "imx-sgtl5000",213 .pm = &snd_soc_pm_ops,214 .of_match_table = imx_sgtl5000_dt_ids,215 },216 .probe = imx_sgtl5000_probe,217 .remove = imx_sgtl5000_remove,218};219module_platform_driver(imx_sgtl5000_driver);220 221MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");222MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");223MODULE_LICENSE("GPL v2");224MODULE_ALIAS("platform:imx-sgtl5000");225