1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // Copyright 2012 Freescale Semiconductor, Inc. 4 // Copyright 2012 Linaro Ltd. 5 6 #include <linux/gpio/consumer.h> 7 #include <linux/module.h> 8 #include <linux/of.h> 9 #include <linux/of_platform.h> 10 #include <linux/i2c.h> 11 #include <sound/soc.h> 12 #include <sound/jack.h> 13 14 #include "imx-audmux.h" 15 16 #define DAI_NAME_SIZE 32 17 #define MUX_PORT_MAX 7 18 19 struct imx_es8328_data { 20 struct device *dev; 21 struct snd_soc_dai_link dai; 22 struct snd_soc_card card; 23 char codec_dai_name[DAI_NAME_SIZE]; 24 char platform_name[DAI_NAME_SIZE]; 25 struct gpio_desc *jack_gpiod; 26 }; 27 28 static struct snd_soc_jack_gpio headset_jack_gpios[] = { 29 { 30 .name = "headset-gpio", 31 .report = SND_JACK_HEADSET, 32 .invert = 0, 33 .debounce_time = 200, 34 }, 35 }; 36 37 static struct snd_soc_jack headset_jack; 38 static struct snd_soc_jack_pin headset_jack_pins[] = { 39 { 40 .pin = "Headphone", 41 .mask = SND_JACK_HEADPHONE, 42 }, 43 { 44 .pin = "Mic Jack", 45 .mask = SND_JACK_MICROPHONE, 46 }, 47 }; 48 49 static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd) 50 { 51 struct imx_es8328_data *data = container_of(rtd->card, 52 struct imx_es8328_data, card); 53 int ret = 0; 54 55 if (data->jack_gpiod) { 56 /* Headphone jack detection */ 57 ret = snd_soc_card_jack_new_pins(rtd->card, "Headphone", 58 SND_JACK_HEADSET | SND_JACK_BTN_0, 59 &headset_jack, 60 headset_jack_pins, 61 ARRAY_SIZE(headset_jack_pins)); 62 if (ret) 63 return ret; 64 65 headset_jack_gpios[0].desc = data->jack_gpiod; 66 ret = snd_soc_jack_add_gpios(&headset_jack, 67 ARRAY_SIZE(headset_jack_gpios), 68 headset_jack_gpios); 69 } 70 71 return ret; 72 } 73 74 static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = { 75 SND_SOC_DAPM_MIC("Mic Jack", NULL), 76 SND_SOC_DAPM_HP("Headphone", NULL), 77 SND_SOC_DAPM_SPK("Speaker", NULL), 78 SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0), 79 }; 80 81 static const struct snd_kcontrol_new imx_es8328_controls[] = { 82 SOC_DAPM_PIN_SWITCH("Headphone"), 83 SOC_DAPM_PIN_SWITCH("Mic Jack"), 84 }; 85 86 static int imx_es8328_probe(struct platform_device *pdev) 87 { 88 struct device_node *np = pdev->dev.of_node; 89 struct device_node *ssi_np = NULL, *codec_np = NULL; 90 struct platform_device *ssi_pdev; 91 struct imx_es8328_data *data; 92 struct snd_soc_dai_link_component *comp; 93 u32 int_port, ext_port; 94 int ret; 95 struct device *dev = &pdev->dev; 96 97 ret = of_property_read_u32(np, "mux-int-port", &int_port); 98 if (ret) { 99 dev_err(dev, "mux-int-port missing or invalid\n"); 100 goto fail; 101 } 102 if (int_port > MUX_PORT_MAX || int_port == 0) { 103 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n", 104 MUX_PORT_MAX); 105 ret = -EINVAL; 106 goto fail; 107 } 108 109 ret = of_property_read_u32(np, "mux-ext-port", &ext_port); 110 if (ret) { 111 dev_err(dev, "mux-ext-port missing or invalid\n"); 112 goto fail; 113 } 114 if (ext_port > MUX_PORT_MAX || ext_port == 0) { 115 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n", 116 MUX_PORT_MAX); 117 ret = -EINVAL; 118 goto fail; 119 } 120 121 /* 122 * The port numbering in the hardware manual starts at 1, while 123 * the audmux API expects it starts at 0. 124 */ 125 int_port--; 126 ext_port--; 127 ret = imx_audmux_v2_configure_port(int_port, 128 IMX_AUDMUX_V2_PTCR_SYN | 129 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | 130 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | 131 IMX_AUDMUX_V2_PTCR_TFSDIR | 132 IMX_AUDMUX_V2_PTCR_TCLKDIR, 133 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); 134 if (ret) { 135 dev_err(dev, "audmux internal port setup failed\n"); 136 return ret; 137 } 138 ret = imx_audmux_v2_configure_port(ext_port, 139 IMX_AUDMUX_V2_PTCR_SYN, 140 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); 141 if (ret) { 142 dev_err(dev, "audmux external port setup failed\n"); 143 return ret; 144 } 145 146 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); 147 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); 148 if (!ssi_np || !codec_np) { 149 dev_err(dev, "phandle missing or invalid\n"); 150 ret = -EINVAL; 151 goto fail; 152 } 153 154 ssi_pdev = of_find_device_by_node(ssi_np); 155 if (!ssi_pdev) { 156 dev_err(dev, "failed to find SSI platform device\n"); 157 ret = -EINVAL; 158 goto fail; 159 } 160 161 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 162 if (!data) { 163 ret = -ENOMEM; 164 goto put_device; 165 } 166 167 comp = devm_kzalloc(dev, 2 * sizeof(*comp), GFP_KERNEL); 168 if (!comp) { 169 ret = -ENOMEM; 170 goto put_device; 171 } 172 173 data->dev = dev; 174 175 data->jack_gpiod = devm_gpiod_get_optional(dev, "jack", GPIOD_IN); 176 if (IS_ERR(data->jack_gpiod)) { 177 ret = PTR_ERR(data->jack_gpiod); 178 goto put_device; 179 } 180 181 /* 182 * CPU == Platform 183 * platform is using soc-generic-dmaengine-pcm 184 */ 185 data->dai.cpus = 186 data->dai.platforms = &comp[0]; 187 data->dai.codecs = &comp[1]; 188 189 data->dai.num_cpus = 1; 190 data->dai.num_codecs = 1; 191 data->dai.num_platforms = 1; 192 193 data->dai.name = "hifi"; 194 data->dai.stream_name = "hifi"; 195 data->dai.codecs->dai_name = "es8328-hifi-analog"; 196 data->dai.codecs->of_node = codec_np; 197 data->dai.cpus->of_node = ssi_np; 198 data->dai.init = &imx_es8328_dai_init; 199 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 200 SND_SOC_DAIFMT_CBP_CFP; 201 202 data->card.dev = dev; 203 data->card.dapm_widgets = imx_es8328_dapm_widgets; 204 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets); 205 data->card.controls = imx_es8328_controls; 206 data->card.num_controls = ARRAY_SIZE(imx_es8328_controls); 207 ret = snd_soc_of_parse_card_name(&data->card, "model"); 208 if (ret) { 209 dev_err(dev, "Unable to parse card name\n"); 210 goto put_device; 211 } 212 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); 213 if (ret) { 214 dev_err(dev, "Unable to parse routing: %d\n", ret); 215 goto put_device; 216 } 217 data->card.num_links = 1; 218 data->card.owner = THIS_MODULE; 219 data->card.dai_link = &data->dai; 220 221 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 222 if (ret) { 223 dev_err(dev, "Unable to register: %d\n", ret); 224 goto put_device; 225 } 226 227 platform_set_drvdata(pdev, data); 228 put_device: 229 put_device(&ssi_pdev->dev); 230 fail: 231 of_node_put(ssi_np); 232 of_node_put(codec_np); 233 234 return ret; 235 } 236 237 static const struct of_device_id imx_es8328_dt_ids[] = { 238 { .compatible = "fsl,imx-audio-es8328", }, 239 { /* sentinel */ } 240 }; 241 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids); 242 243 static struct platform_driver imx_es8328_driver = { 244 .driver = { 245 .name = "imx-es8328", 246 .of_match_table = imx_es8328_dt_ids, 247 }, 248 .probe = imx_es8328_probe, 249 }; 250 module_platform_driver(imx_es8328_driver); 251 252 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>"); 253 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver"); 254 MODULE_LICENSE("GPL v2"); 255 MODULE_ALIAS("platform:imx-audio-es8328"); 256