1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // Copyright 2012 Freescale Semiconductor, Inc. 4 // Copyright 2012 Linaro Ltd. 5 6 #include <linux/gpio.h> 7 #include <linux/module.h> 8 #include <linux/of.h> 9 #include <linux/of_platform.h> 10 #include <linux/i2c.h> 11 #include <linux/of_gpio.h> 12 #include <sound/soc.h> 13 #include <sound/jack.h> 14 15 #include "imx-audmux.h" 16 17 #define DAI_NAME_SIZE 32 18 #define MUX_PORT_MAX 7 19 20 struct imx_es8328_data { 21 struct device *dev; 22 struct snd_soc_dai_link dai; 23 struct snd_soc_card card; 24 char codec_dai_name[DAI_NAME_SIZE]; 25 char platform_name[DAI_NAME_SIZE]; 26 int jack_gpio; 27 }; 28 29 static struct snd_soc_jack_gpio headset_jack_gpios[] = { 30 { 31 .gpio = -1, 32 .name = "headset-gpio", 33 .report = SND_JACK_HEADSET, 34 .invert = 0, 35 .debounce_time = 200, 36 }, 37 }; 38 39 static struct snd_soc_jack headset_jack; 40 static struct snd_soc_jack_pin headset_jack_pins[] = { 41 { 42 .pin = "Headphone", 43 .mask = SND_JACK_HEADPHONE, 44 }, 45 { 46 .pin = "Mic Jack", 47 .mask = SND_JACK_MICROPHONE, 48 }, 49 }; 50 51 static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd) 52 { 53 struct imx_es8328_data *data = container_of(rtd->card, 54 struct imx_es8328_data, card); 55 int ret = 0; 56 57 /* Headphone jack detection */ 58 if (gpio_is_valid(data->jack_gpio)) { 59 ret = snd_soc_card_jack_new_pins(rtd->card, "Headphone", 60 SND_JACK_HEADSET | SND_JACK_BTN_0, 61 &headset_jack, 62 headset_jack_pins, 63 ARRAY_SIZE(headset_jack_pins)); 64 if (ret) 65 return ret; 66 67 headset_jack_gpios[0].gpio = data->jack_gpio; 68 ret = snd_soc_jack_add_gpios(&headset_jack, 69 ARRAY_SIZE(headset_jack_gpios), 70 headset_jack_gpios); 71 } 72 73 return ret; 74 } 75 76 static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = { 77 SND_SOC_DAPM_MIC("Mic Jack", NULL), 78 SND_SOC_DAPM_HP("Headphone", NULL), 79 SND_SOC_DAPM_SPK("Speaker", NULL), 80 SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0), 81 }; 82 83 static const struct snd_kcontrol_new imx_es8328_controls[] = { 84 SOC_DAPM_PIN_SWITCH("Headphone"), 85 SOC_DAPM_PIN_SWITCH("Mic Jack"), 86 }; 87 88 static int imx_es8328_probe(struct platform_device *pdev) 89 { 90 struct device_node *np = pdev->dev.of_node; 91 struct device_node *ssi_np = NULL, *codec_np = NULL; 92 struct platform_device *ssi_pdev; 93 struct imx_es8328_data *data; 94 struct snd_soc_dai_link_component *comp; 95 u32 int_port, ext_port; 96 int ret; 97 struct device *dev = &pdev->dev; 98 99 ret = of_property_read_u32(np, "mux-int-port", &int_port); 100 if (ret) { 101 dev_err(dev, "mux-int-port missing or invalid\n"); 102 goto fail; 103 } 104 if (int_port > MUX_PORT_MAX || int_port == 0) { 105 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n", 106 MUX_PORT_MAX); 107 ret = -EINVAL; 108 goto fail; 109 } 110 111 ret = of_property_read_u32(np, "mux-ext-port", &ext_port); 112 if (ret) { 113 dev_err(dev, "mux-ext-port missing or invalid\n"); 114 goto fail; 115 } 116 if (ext_port > MUX_PORT_MAX || ext_port == 0) { 117 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n", 118 MUX_PORT_MAX); 119 ret = -EINVAL; 120 goto fail; 121 } 122 123 /* 124 * The port numbering in the hardware manual starts at 1, while 125 * the audmux API expects it starts at 0. 126 */ 127 int_port--; 128 ext_port--; 129 ret = imx_audmux_v2_configure_port(int_port, 130 IMX_AUDMUX_V2_PTCR_SYN | 131 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 132 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 133 IMX_AUDMUX_V2_PTCR_TFSDIR | 134 IMX_AUDMUX_V2_PTCR_TCLKDIR, 135 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); 136 if (ret) { 137 dev_err(dev, "audmux internal port setup failed\n"); 138 return ret; 139 } 140 ret = imx_audmux_v2_configure_port(ext_port, 141 IMX_AUDMUX_V2_PTCR_SYN, 142 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); 143 if (ret) { 144 dev_err(dev, "audmux external port setup failed\n"); 145 return ret; 146 } 147 148 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); 149 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); 150 if (!ssi_np || !codec_np) { 151 dev_err(dev, "phandle missing or invalid\n"); 152 ret = -EINVAL; 153 goto fail; 154 } 155 156 ssi_pdev = of_find_device_by_node(ssi_np); 157 if (!ssi_pdev) { 158 dev_err(dev, "failed to find SSI platform device\n"); 159 ret = -EINVAL; 160 goto fail; 161 } 162 163 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 164 if (!data) { 165 ret = -ENOMEM; 166 goto put_device; 167 } 168 169 comp = devm_kzalloc(dev, 2 * sizeof(*comp), GFP_KERNEL); 170 if (!comp) { 171 ret = -ENOMEM; 172 goto put_device; 173 } 174 175 data->dev = dev; 176 177 data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0); 178 179 /* 180 * CPU == Platform 181 * platform is using soc-generic-dmaengine-pcm 182 */ 183 data->dai.cpus = 184 data->dai.platforms = &comp[0]; 185 data->dai.codecs = &comp[1]; 186 187 data->dai.num_cpus = 1; 188 data->dai.num_codecs = 1; 189 data->dai.num_platforms = 1; 190 191 data->dai.name = "hifi"; 192 data->dai.stream_name = "hifi"; 193 data->dai.codecs->dai_name = "es8328-hifi-analog"; 194 data->dai.codecs->of_node = codec_np; 195 data->dai.cpus->of_node = ssi_np; 196 data->dai.init = &imx_es8328_dai_init; 197 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 198 SND_SOC_DAIFMT_CBP_CFP; 199 200 data->card.dev = dev; 201 data->card.dapm_widgets = imx_es8328_dapm_widgets; 202 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets); 203 data->card.controls = imx_es8328_controls; 204 data->card.num_controls = ARRAY_SIZE(imx_es8328_controls); 205 ret = snd_soc_of_parse_card_name(&data->card, "model"); 206 if (ret) { 207 dev_err(dev, "Unable to parse card name\n"); 208 goto put_device; 209 } 210 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); 211 if (ret) { 212 dev_err(dev, "Unable to parse routing: %d\n", ret); 213 goto put_device; 214 } 215 data->card.num_links = 1; 216 data->card.owner = THIS_MODULE; 217 data->card.dai_link = &data->dai; 218 219 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 220 if (ret) { 221 dev_err(dev, "Unable to register: %d\n", ret); 222 goto put_device; 223 } 224 225 platform_set_drvdata(pdev, data); 226 put_device: 227 put_device(&ssi_pdev->dev); 228 fail: 229 of_node_put(ssi_np); 230 of_node_put(codec_np); 231 232 return ret; 233 } 234 235 static const struct of_device_id imx_es8328_dt_ids[] = { 236 { .compatible = "fsl,imx-audio-es8328", }, 237 { /* sentinel */ } 238 }; 239 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids); 240 241 static struct platform_driver imx_es8328_driver = { 242 .driver = { 243 .name = "imx-es8328", 244 .of_match_table = imx_es8328_dt_ids, 245 }, 246 .probe = imx_es8328_probe, 247 }; 248 module_platform_driver(imx_es8328_driver); 249 250 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>"); 251 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver"); 252 MODULE_LICENSE("GPL v2"); 253 MODULE_ALIAS("platform:imx-audio-es8328"); 254