Commit 115779bf authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add audio codec info for Lenovo Yoga Tab 3 Pro YT3-X90F 



The SPI attached WM5102 codec on the Lenovo Yoga Tab 3 Pro YT3-X90F
is not described in the ACPI tables.

Add info to instantiate the SPI device for the codec manually.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20231104205828.63139-3-hdegoede@redhat.com
parent 70505ea6

drivers/platform/x86/x86-android-tablets/lenovo.c

+98 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 


#include <linux/efi.h>

#include <linux/gpio/machine.h>

#include <linux/mfd/arizona/pdata.h>

#include <linux/mfd/arizona/registers.h>

#include <linux/mfd/intel_soc_pmic.h>

#include <linux/pinctrl/consumer.h>

#include <linux/pinctrl/machine.h>
@@ -659,6 +661,88 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { 
	}

};



/*

 * 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.

 */

static const struct 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 },

};



/* YT3 WM5102 arizona_micd_config comes from Android kernel sources */

static struct arizona_micd_config lenovo_yt3_wm5102_micd_config[] = {

	{ 0, 1, 0 },

	{ ARIZONA_ACCDET_SRC, 2, 1 },

};



static struct arizona_pdata lenovo_yt3_wm5102_pdata = {

	.irq_flags = IRQF_TRIGGER_LOW,

	.micd_detect_debounce = 200,

	.micd_ranges = arizona_micd_aosp_ranges,

	.num_micd_ranges = ARRAY_SIZE(arizona_micd_aosp_ranges),

	.hpdet_channel = ARIZONA_ACCDET_MODE_HPL,



	/* Below settings come from Android kernel sources */

	.micd_bias_start_time = 1,

	.micd_rate = 6,

	.micd_configs = lenovo_yt3_wm5102_micd_config,

	.num_micd_configs = ARRAY_SIZE(lenovo_yt3_wm5102_micd_config),

	.micbias = {

		[0] = { /* MICBIAS1 */

			.mV = 2800,

			.ext_cap = 1,

			.discharge = 1,

			.soft_start = 0,

			.bypass = 0,

		},

		[1] = { /* MICBIAS2 */

			.mV = 2800,

			.ext_cap = 1,

			.discharge = 1,

			.soft_start = 0,

			.bypass = 0,

		},

		[2] = { /* MICBIAS2 */

			.mV = 2800,

			.ext_cap = 1,

			.discharge = 1,

			.soft_start = 0,

			.bypass = 0,

		},

	},

};



static const struct x86_spi_dev_info lenovo_yt3_spi_devs[] __initconst = {

	{

		/* WM5102 codec */

		.board_info = {

			.modalias = "wm5102",

			.platform_data = &lenovo_yt3_wm5102_pdata,

			.max_speed_hz = 5000000,

		},

		.ctrl_path = "\\_SB_.PCI0.SPI1",

		.irq_data = {

			.type = X86_ACPI_IRQ_TYPE_GPIOINT,

			.chip = "INT33FF:00",

			.index = 91,

			.trigger = ACPI_LEVEL_SENSITIVE,

			.polarity = ACPI_ACTIVE_LOW,

			.con_id = "wm5102_irq",

		},

	}

};



static int __init lenovo_yt3_init(void)

{

	int ret;
@@ -702,14 +786,28 @@ static struct gpiod_lookup_table lenovo_yt3_hideep_gpios = { 
	},

};



static struct gpiod_lookup_table lenovo_yt3_wm5102_gpios = {

	.dev_id = "spi1.0",

	.table = {

		GPIO_LOOKUP("INT33FF:00", 75, "wlf,spkvdd-ena", GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP("INT33FF:00", 81, "wlf,ldoena", GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP("INT33FF:00", 82, "reset", GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP("arizona", 2, "wlf,micd-pol", GPIO_ACTIVE_HIGH),

		{ }

	},

};



static struct gpiod_lookup_table * const lenovo_yt3_gpios[] = {

	&lenovo_yt3_hideep_gpios,

	&lenovo_yt3_wm5102_gpios,

	NULL

};



const struct x86_dev_info lenovo_yt3_info __initconst = {

	.i2c_client_info = lenovo_yt3_i2c_clients,

	.i2c_client_count = ARRAY_SIZE(lenovo_yt3_i2c_clients),

	.spi_dev_info = lenovo_yt3_spi_devs,

	.spi_dev_count = ARRAY_SIZE(lenovo_yt3_spi_devs),

	.gpiod_lookup_tables = lenovo_yt3_gpios,

	.init = lenovo_yt3_init,

};