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 32 17 18 struct 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 27 static 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(asoc_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 43 static 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 51 static 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, while 75 * 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; 184 185 put_device: 186 put_device(&codec_dev->dev); 187 fail: 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 } 195 196 static 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 } 203 204 static const struct of_device_id imx_sgtl5000_dt_ids[] = { 205 { .compatible = "fsl,imx-audio-sgtl5000", }, 206 { /* sentinel */ } 207 }; 208 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids); 209 210 static 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_new = imx_sgtl5000_remove, 218 }; 219 module_platform_driver(imx_sgtl5000_driver); 220 221 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>"); 222 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver"); 223 MODULE_LICENSE("GPL v2"); 224 MODULE_ALIAS("platform:imx-sgtl5000"); 225