/* * The ACPI resources for the device only describe external GPIO-s. They do * not provide mappings for the GPIO-s coming from the Arizona codec itself.
*/ staticconststruct gpiod_lookup arizona_soc_gpios[] = {
{ "arizona", 2, "wlf,spkvdd-ena", 0, GPIO_ACTIVE_HIGH },
{ "arizona", 4, "wlf,micd-pol", 0, GPIO_ACTIVE_LOW },
};
/* For ACPI tables from boards which ship with Windows as factory OS */ staticint arizona_spi_acpi_windows_probe(struct arizona *arizona)
{ struct gpiod_lookup_table *lookup;
acpi_status status; int ret;
/* Add mappings for the 2 ACPI declared GPIOs used for reset and ldo-ena */
devm_acpi_dev_add_driver_gpios(arizona->dev, arizona_acpi_gpios);
/* Add lookups for the SoCs own GPIOs used for micdet-polarity and spkVDD-enable */
lookup = devm_kzalloc(arizona->dev,
struct_size(lookup, table, ARRAY_SIZE(arizona_soc_gpios) + 1),
GFP_KERNEL); if (!lookup) return -ENOMEM;
gpiod_add_lookup_table(lookup);
ret = devm_add_action_or_reset(arizona->dev, arizona_spi_acpi_remove_lookup, lookup); if (ret) return ret;
/* Enable 32KHz clock from SoC to codec for jack-detect */
status = acpi_evaluate_object(ACPI_HANDLE(arizona->dev), "CLKE", NULL, NULL); if (ACPI_FAILURE(status))
dev_warn(arizona->dev, "Failed to enable 32KHz clk ACPI error %d\n", status);
return 0;
}
/* For ACPI tables from boards which ship with Android as factory OS */ staticint arizona_spi_acpi_android_probe(struct arizona *arizona)
{ int ret;
/* * Get the reset GPIO, treating -ENOENT as -EPROBE_DEFER to wait for * the x86-android-tablets module to register the board specific GPIO * lookup table.
*/
arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(arizona->pdata.reset)) {
ret = PTR_ERR(arizona->pdata.reset); if (ret == -ENOENT) {
dev_info_once(arizona->dev, "Deferring probe till GPIO lookup is registered\n");
ret = -EPROBE_DEFER;
} return dev_err_probe(arizona->dev, ret, "getting reset GPIO\n");
}
return 0;
}
/* * The AOSP 3.5 mm Headset: Accessory Specification gives the following values: * Function A Play/Pause: 0 ohm * Function D Voice assistant: 135 ohm * Function B Volume Up 240 ohm * Function C Volume Down 470 ohm * Minimum Mic DC resistance 1000 ohm * Minimum Ear speaker impedance 16 ohm * Note the first max value below must be less then the min. speaker impedance, * to allow CTIA/OMTP detection to work. The other max values are the closest * value from extcon-arizona.c:arizona_micd_levels halfway 2 button resistances.
*/ staticconststruct arizona_micd_range arizona_micd_aosp_ranges[] = {
{ .max = 11, .key = KEY_PLAYPAUSE },
{ .max = 186, .key = KEY_VOICECOMMAND },
{ .max = 348, .key = KEY_VOLUMEUP },
{ .max = 752, .key = KEY_VOLUMEDOWN },
};
if (acpi_dev_hid_uid_match(adev, "10WM5102", NULL))
ret = arizona_spi_acpi_android_probe(arizona); else
ret = arizona_spi_acpi_windows_probe(arizona);
if (ret) return ret;
/* * Some DSDTs wrongly declare the IRQ trigger-type as IRQF_TRIGGER_FALLING * The IRQ line will stay low when a new IRQ event happens between reading * the IRQ status flags and acknowledging them. When the IRQ line stays * low like this the IRQ will never trigger again when its type is set * to IRQF_TRIGGER_FALLING. Correct the IRQ trigger-type to fix this. * * Note theoretically it is possible that some boards are not capable * of handling active low level interrupts. In that case setting the * flag to IRQF_TRIGGER_FALLING would not be a bug (and we would need * to work around this) but so far all known usages of IRQF_TRIGGER_FALLING * are a bug in the board's DSDT.
*/
arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
/* Wait 200 ms after jack insertion */
arizona->pdata.micd_detect_debounce = 200;
/* Use standard AOSP values for headset-button mappings */
arizona->pdata.micd_ranges = arizona_micd_aosp_ranges;
arizona->pdata.num_micd_ranges = ARRAY_SIZE(arizona_micd_aosp_ranges);
/* Use left headphone speaker for HP vs line-out detection */
arizona->pdata.hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
staticint arizona_spi_probe(struct spi_device *spi)
{ struct arizona *arizona; conststruct regmap_config *regmap_config = NULL; unsignedlong type = 0; int ret;
type = (unsignedlong)spi_get_device_match_data(spi); switch (type) { case WM5102: if (IS_ENABLED(CONFIG_MFD_WM5102))
regmap_config = &wm5102_spi_regmap; break; case WM5110: case WM8280: if (IS_ENABLED(CONFIG_MFD_WM5110))
regmap_config = &wm5110_spi_regmap; break; case WM1831: case CS47L24: if (IS_ENABLED(CONFIG_MFD_CS47L24))
regmap_config = &cs47l24_spi_regmap; break; default:
dev_err(&spi->dev, "Unknown device type %ld\n", type); return -EINVAL;
}
if (!regmap_config) {
dev_err(&spi->dev, "No kernel support for device type %ld\n", type); return -EINVAL;
}
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