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