1 /* 2 * Copyright 2012 Freescale Semiconductor, Inc. 3 * Copyright 2012 Linaro Ltd. 4 * 5 * The code contained herein is licensed under the GNU General Public 6 * License. You may obtain a copy of the GNU General Public License 7 * Version 2 or later at the following locations: 8 * 9 * http://www.opensource.org/licenses/gpl-license.html 10 * http://www.gnu.org/copyleft/gpl.html 11 */ 12 13 #include <linux/module.h> 14 #include <linux/of.h> 15 #include <linux/of_platform.h> 16 #include <linux/i2c.h> 17 #include <linux/clk.h> 18 #include <sound/soc.h> 19 20 #include "../codecs/sgtl5000.h" 21 #include "imx-audmux.h" 22 23 #define DAI_NAME_SIZE 32 24 25 struct imx_sgtl5000_data { 26 struct snd_soc_dai_link dai; 27 struct snd_soc_card card; 28 char codec_dai_name[DAI_NAME_SIZE]; 29 char platform_name[DAI_NAME_SIZE]; 30 struct clk *codec_clk; 31 unsigned int clk_frequency; 32 }; 33 34 static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd) 35 { 36 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card); 37 struct device *dev = rtd->card->dev; 38 int ret; 39 40 ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK, 41 data->clk_frequency, SND_SOC_CLOCK_IN); 42 if (ret) { 43 dev_err(dev, "could not set codec driver clock params\n"); 44 return ret; 45 } 46 47 return 0; 48 } 49 50 static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = { 51 SND_SOC_DAPM_MIC("Mic Jack", NULL), 52 SND_SOC_DAPM_LINE("Line In Jack", NULL), 53 SND_SOC_DAPM_HP("Headphone Jack", NULL), 54 SND_SOC_DAPM_SPK("Line Out Jack", NULL), 55 SND_SOC_DAPM_SPK("Ext Spk", NULL), 56 }; 57 58 static int imx_sgtl5000_probe(struct platform_device *pdev) 59 { 60 struct device_node *np = pdev->dev.of_node; 61 struct device_node *ssi_np, *codec_np; 62 struct platform_device *ssi_pdev; 63 struct i2c_client *codec_dev; 64 struct imx_sgtl5000_data *data = NULL; 65 int int_port, ext_port; 66 int ret; 67 68 ret = of_property_read_u32(np, "mux-int-port", &int_port); 69 if (ret) { 70 dev_err(&pdev->dev, "mux-int-port missing or invalid\n"); 71 return ret; 72 } 73 ret = of_property_read_u32(np, "mux-ext-port", &ext_port); 74 if (ret) { 75 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n"); 76 return ret; 77 } 78 79 /* 80 * The port numbering in the hardware manual starts at 1, while 81 * the audmux API expects it starts at 0. 82 */ 83 int_port--; 84 ext_port--; 85 ret = imx_audmux_v2_configure_port(int_port, 86 IMX_AUDMUX_V2_PTCR_SYN | 87 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 88 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 89 IMX_AUDMUX_V2_PTCR_TFSDIR | 90 IMX_AUDMUX_V2_PTCR_TCLKDIR, 91 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); 92 if (ret) { 93 dev_err(&pdev->dev, "audmux internal port setup failed\n"); 94 return ret; 95 } 96 ret = imx_audmux_v2_configure_port(ext_port, 97 IMX_AUDMUX_V2_PTCR_SYN, 98 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); 99 if (ret) { 100 dev_err(&pdev->dev, "audmux external port setup failed\n"); 101 return ret; 102 } 103 104 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); 105 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); 106 if (!ssi_np || !codec_np) { 107 dev_err(&pdev->dev, "phandle missing or invalid\n"); 108 ret = -EINVAL; 109 goto fail; 110 } 111 112 ssi_pdev = of_find_device_by_node(ssi_np); 113 if (!ssi_pdev) { 114 dev_err(&pdev->dev, "failed to find SSI platform device\n"); 115 ret = -EPROBE_DEFER; 116 goto fail; 117 } 118 codec_dev = of_find_i2c_device_by_node(codec_np); 119 if (!codec_dev) { 120 dev_err(&pdev->dev, "failed to find codec platform device\n"); 121 return -EPROBE_DEFER; 122 } 123 124 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 125 if (!data) { 126 ret = -ENOMEM; 127 goto fail; 128 } 129 130 data->codec_clk = clk_get(&codec_dev->dev, NULL); 131 if (IS_ERR(data->codec_clk)) { 132 ret = PTR_ERR(data->codec_clk); 133 goto fail; 134 } 135 136 data->clk_frequency = clk_get_rate(data->codec_clk); 137 138 data->dai.name = "HiFi"; 139 data->dai.stream_name = "HiFi"; 140 data->dai.codec_dai_name = "sgtl5000"; 141 data->dai.codec_of_node = codec_np; 142 data->dai.cpu_of_node = ssi_np; 143 data->dai.platform_of_node = ssi_np; 144 data->dai.init = &imx_sgtl5000_dai_init; 145 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 146 SND_SOC_DAIFMT_CBM_CFM; 147 148 data->card.dev = &pdev->dev; 149 ret = snd_soc_of_parse_card_name(&data->card, "model"); 150 if (ret) 151 goto fail; 152 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); 153 if (ret) 154 goto fail; 155 data->card.num_links = 1; 156 data->card.owner = THIS_MODULE; 157 data->card.dai_link = &data->dai; 158 data->card.dapm_widgets = imx_sgtl5000_dapm_widgets; 159 data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets); 160 161 platform_set_drvdata(pdev, &data->card); 162 snd_soc_card_set_drvdata(&data->card, data); 163 164 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 165 if (ret) { 166 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 167 goto fail; 168 } 169 170 of_node_put(ssi_np); 171 of_node_put(codec_np); 172 173 return 0; 174 175 fail: 176 if (data && !IS_ERR(data->codec_clk)) 177 clk_put(data->codec_clk); 178 if (ssi_np) 179 of_node_put(ssi_np); 180 if (codec_np) 181 of_node_put(codec_np); 182 183 return ret; 184 } 185 186 static int imx_sgtl5000_remove(struct platform_device *pdev) 187 { 188 struct snd_soc_card *card = platform_get_drvdata(pdev); 189 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card); 190 191 clk_put(data->codec_clk); 192 193 return 0; 194 } 195 196 static const struct of_device_id imx_sgtl5000_dt_ids[] = { 197 { .compatible = "fsl,imx-audio-sgtl5000", }, 198 { /* sentinel */ } 199 }; 200 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids); 201 202 static struct platform_driver imx_sgtl5000_driver = { 203 .driver = { 204 .name = "imx-sgtl5000", 205 .owner = THIS_MODULE, 206 .pm = &snd_soc_pm_ops, 207 .of_match_table = imx_sgtl5000_dt_ids, 208 }, 209 .probe = imx_sgtl5000_probe, 210 .remove = imx_sgtl5000_remove, 211 }; 212 module_platform_driver(imx_sgtl5000_driver); 213 214 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>"); 215 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver"); 216 MODULE_LICENSE("GPL v2"); 217 MODULE_ALIAS("platform:imx-sgtl5000"); 218