1 // SPDX-License-Identifier: GPL-2.0-only
3  * arizona-spi.c  --  Arizona SPI bus interface
12 #include <linux/gpio/consumer.h>
13 #include <linux/gpio/machine.h>
21 #include <uapi/linux/input-event-codes.h>
32 	{ "reset-gpios", &reset_gpios, 1, },
33 	{ "wlf,ldoena-gpios", &ldoena_gpios, 1 },
38  * The ACPI resources for the device only describe external GPIO-s. They do
39  * not provide mappings for the GPIO-s coming from the Arizona codec itself.
42 	{ "arizona", 2, "wlf,spkvdd-ena", 0, GPIO_ACTIVE_HIGH },
43 	{ "arizona", 4, "wlf,micd-pol", 0, GPIO_ACTIVE_LOW },
58 	/* Add mappings for the 2 ACPI declared GPIOs used for reset and ldo-ena */  in arizona_spi_acpi_windows_probe()
59 	devm_acpi_dev_add_driver_gpios(arizona->dev, arizona_acpi_gpios);  in arizona_spi_acpi_windows_probe()
61 	/* Add lookups for the SoCs own GPIOs used for micdet-polarity and spkVDD-enable */  in arizona_spi_acpi_windows_probe()
62 	lookup = devm_kzalloc(arizona->dev,  in arizona_spi_acpi_windows_probe()
66 		return -ENOMEM;  in arizona_spi_acpi_windows_probe()
68 	lookup->dev_id = dev_name(arizona->dev);  in arizona_spi_acpi_windows_probe()
69 	memcpy(lookup->table, arizona_soc_gpios, sizeof(arizona_soc_gpios));  in arizona_spi_acpi_windows_probe()
72 	ret = devm_add_action_or_reset(arizona->dev, arizona_spi_acpi_remove_lookup, lookup);  in arizona_spi_acpi_windows_probe()
76 	/* Enable 32KHz clock from SoC to codec for jack-detect */  in arizona_spi_acpi_windows_probe()
77 	status = acpi_evaluate_object(ACPI_HANDLE(arizona->dev), "CLKE", NULL, NULL);  in arizona_spi_acpi_windows_probe()
79 		dev_warn(arizona->dev, "Failed to enable 32KHz clk ACPI error %d\n", status);  in arizona_spi_acpi_windows_probe()
90 	 * Get the reset GPIO, treating -ENOENT as -EPROBE_DEFER to wait for  in arizona_spi_acpi_android_probe()
91 	 * the x86-android-tablets module to register the board specific GPIO  in arizona_spi_acpi_android_probe()
94 	arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset", GPIOD_OUT_LOW);  in arizona_spi_acpi_android_probe()
95 	if (IS_ERR(arizona->pdata.reset)) {  in arizona_spi_acpi_android_probe()
96 		ret = PTR_ERR(arizona->pdata.reset);  in arizona_spi_acpi_android_probe()
97 		if (ret == -ENOENT) {  in arizona_spi_acpi_android_probe()
98 			dev_info_once(arizona->dev,  in arizona_spi_acpi_android_probe()
99 				      "Deferring probe till GPIO lookup is registered\n");  in arizona_spi_acpi_android_probe()
100 			ret = -EPROBE_DEFER;  in arizona_spi_acpi_android_probe()
102 		return dev_err_probe(arizona->dev, ret, "getting reset GPIO\n");  in arizona_spi_acpi_android_probe()
118  * value from extcon-arizona.c:arizona_micd_levels halfway 2 button resistances.
129 	struct acpi_device *adev = ACPI_COMPANION(arizona->dev);  in arizona_spi_acpi_probe()
141 	 * Some DSDTs wrongly declare the IRQ trigger-type as IRQF_TRIGGER_FALLING  in arizona_spi_acpi_probe()
145 	 * to IRQF_TRIGGER_FALLING. Correct the IRQ trigger-type to fix this.  in arizona_spi_acpi_probe()
153 	arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;  in arizona_spi_acpi_probe()
156 	arizona->pdata.micd_detect_debounce = 200;  in arizona_spi_acpi_probe()
158 	/* Use standard AOSP values for headset-button mappings */  in arizona_spi_acpi_probe()
159 	arizona->pdata.micd_ranges = arizona_micd_aosp_ranges;  in arizona_spi_acpi_probe()
160 	arizona->pdata.num_micd_ranges = ARRAY_SIZE(arizona_micd_aosp_ranges);  in arizona_spi_acpi_probe()
162 	/* Use left headphone speaker for HP vs line-out detection */  in arizona_spi_acpi_probe()
163 	arizona->pdata.hpdet_channel = ARIZONA_ACCDET_MODE_HPL;  in arizona_spi_acpi_probe()
187 	return -ENODEV;  in arizona_spi_acpi_probe()
215 		dev_err(&spi->dev, "Unknown device type %ld\n", type);  in arizona_spi_probe()
216 		return -EINVAL;  in arizona_spi_probe()
220 		dev_err(&spi->dev,  in arizona_spi_probe()
222 		return -EINVAL;  in arizona_spi_probe()
225 	arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);  in arizona_spi_probe()
227 		return -ENOMEM;  in arizona_spi_probe()
229 	arizona->regmap = devm_regmap_init_spi(spi, regmap_config);  in arizona_spi_probe()
230 	if (IS_ERR(arizona->regmap)) {  in arizona_spi_probe()
231 		ret = PTR_ERR(arizona->regmap);  in arizona_spi_probe()
232 		dev_err(&spi->dev, "Failed to allocate register map: %d\n",  in arizona_spi_probe()
237 	arizona->type = type;  in arizona_spi_probe()
238 	arizona->dev = &spi->dev;  in arizona_spi_probe()
239 	arizona->irq = spi->irq;  in arizona_spi_probe()
241 	if (has_acpi_companion(&spi->dev)) {  in arizona_spi_probe()