diff options
Diffstat (limited to 'drivers/platform/x86/x86-android-tablets/lenovo.c')
| -rw-r--r-- | drivers/platform/x86/x86-android-tablets/lenovo.c | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c new file mode 100644 index 000000000000..65cfccaa2894 --- /dev/null +++ b/drivers/platform/x86/x86-android-tablets/lenovo.c @@ -0,0 +1,679 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Board info for Lenovo X86 tablets which ship with Android as the factory image + * and which have broken DSDT tables. The factory kernels shipped on these + * devices typically have a bunch of things hardcoded, rather than specified + * in their DSDT. + * + * Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/efi.h> +#include <linux/gpio/machine.h> +#include <linux/mfd/intel_soc_pmic.h> +#include <linux/pinctrl/consumer.h> +#include <linux/pinctrl/machine.h> +#include <linux/platform_data/lp855x.h> +#include <linux/platform_device.h> +#include <linux/reboot.h> +#include <linux/rmi.h> +#include <linux/spi/spi.h> + +#include "shared-psy-info.h" +#include "x86-android-tablets.h" + +/* + * Various Lenovo models use a TI LP8557 LED backlight controller with its PWM + * input connected to a PWM output coming from the LCD panel's controller. + * The Android kernels have a hack in the i915 driver to write a non-standard + * panel specific DSI register to set the duty-cycle of the LCD's PWM output. + * + * To avoid having to have a similar hack in the mainline kernel program the + * LP8557 to directly set the level and use the lp855x_bl driver for control. + */ +static struct lp855x_platform_data lenovo_lp8557_pdata = { + .device_control = 0x86, + .initial_brightness = 128, +}; + +/* Lenovo Yoga Book X90F / X90L's Android factory img has everything hardcoded */ + +static const struct property_entry lenovo_yb1_x90_wacom_props[] = { + PROPERTY_ENTRY_U32("hid-descr-addr", 0x0001), + PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 150), + { } +}; + +static const struct software_node lenovo_yb1_x90_wacom_node = { + .properties = lenovo_yb1_x90_wacom_props, +}; + +/* + * The HiDeep IST940E touchscreen comes up in I2C-HID mode. The native protocol + * reports ABS_MT_PRESSURE and ABS_MT_TOUCH_MAJOR which are not reported in HID + * mode, so using native mode is preferred. + * It could alternatively be used in HID mode by changing the properties to: + * PROPERTY_ENTRY_U32("hid-descr-addr", 0x0020), + * PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 120), + * and changing board_info.type to "hid-over-i2c". + */ +static const struct property_entry lenovo_yb1_x90_hideep_ts_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 1200), + PROPERTY_ENTRY_U32("touchscreen-size-y", 1920), + PROPERTY_ENTRY_U32("touchscreen-max-pressure", 16384), + PROPERTY_ENTRY_BOOL("hideep,force-native-protocol"), + { } +}; + +static const struct software_node lenovo_yb1_x90_hideep_ts_node = { + .properties = lenovo_yb1_x90_hideep_ts_props, +}; + +static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst = { + { + /* BQ27542 fuel-gauge */ + .board_info = { + .type = "bq27542", + .addr = 0x55, + .dev_name = "bq27542", + .swnode = &fg_bq25890_supply_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C1", + }, { + /* Goodix Touchscreen in keyboard half */ + .board_info = { + .type = "GDIX1001:00", + .addr = 0x14, + .dev_name = "goodix_ts", + }, + .adapter_path = "\\_SB_.PCI0.I2C2", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FF:01", + .index = 56, + .trigger = ACPI_EDGE_SENSITIVE, + .polarity = ACPI_ACTIVE_LOW, + }, + }, { + /* Wacom Digitizer in keyboard half */ + .board_info = { + .type = "hid-over-i2c", + .addr = 0x09, + .dev_name = "wacom", + .swnode = &lenovo_yb1_x90_wacom_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C4", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FF:01", + .index = 49, + .trigger = ACPI_LEVEL_SENSITIVE, + .polarity = ACPI_ACTIVE_LOW, + }, + }, { + /* LP8557 Backlight controller */ + .board_info = { + .type = "lp8557", + .addr = 0x2c, + .dev_name = "lp8557", + .platform_data = &lenovo_lp8557_pdata, + }, + .adapter_path = "\\_SB_.PCI0.I2C4", + }, { + /* HiDeep IST940E Touchscreen in display half */ + .board_info = { + .type = "hideep_ts", + .addr = 0x6c, + .dev_name = "hideep_ts", + .swnode = &lenovo_yb1_x90_hideep_ts_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C6", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FF:03", + .index = 77, + .trigger = ACPI_LEVEL_SENSITIVE, + .polarity = ACPI_ACTIVE_LOW, + }, + }, +}; + +static const struct platform_device_info lenovo_yb1_x90_pdevs[] __initconst = { + { + .name = "yogabook-touch-kbd-digitizer-switch", + .id = PLATFORM_DEVID_NONE, + }, +}; + +static struct gpiod_lookup_table lenovo_yb1_x90_goodix_gpios = { + .dev_id = "i2c-goodix_ts", + .table = { + GPIO_LOOKUP("INT33FF:01", 53, "reset", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("INT33FF:01", 56, "irq", GPIO_ACTIVE_HIGH), + { } + }, +}; + +static struct gpiod_lookup_table lenovo_yb1_x90_hideep_gpios = { + .dev_id = "i2c-hideep_ts", + .table = { + GPIO_LOOKUP("INT33FF:00", 7, "reset", GPIO_ACTIVE_LOW), + { } + }, +}; + +static struct gpiod_lookup_table lenovo_yb1_x90_wacom_gpios = { + .dev_id = "i2c-wacom", + .table = { + GPIO_LOOKUP("INT33FF:00", 82, "reset", GPIO_ACTIVE_LOW), + { } + }, +}; + +static struct gpiod_lookup_table * const lenovo_yb1_x90_gpios[] = { + &lenovo_yb1_x90_hideep_gpios, + &lenovo_yb1_x90_goodix_gpios, + &lenovo_yb1_x90_wacom_gpios, + NULL +}; + +static int __init lenovo_yb1_x90_init(void) +{ + /* Enable the regulators used by the touchscreens */ + + /* Vprog3B 3.0V used by the goodix touchscreen in the keyboard half */ + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0x9b, 0x02, 0xff); + + /* Vprog4D 3.0V used by the HiDeep touchscreen in the display half */ + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0x9f, 0x02, 0xff); + + /* Vprog5A 1.8V used by the HiDeep touchscreen in the display half */ + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0xa0, 0x02, 0xff); + + /* Vprog5B 1.8V used by the goodix touchscreen in the keyboard half */ + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0xa1, 0x02, 0xff); + + return 0; +} + +const struct x86_dev_info lenovo_yogabook_x90_info __initconst = { + .i2c_client_info = lenovo_yb1_x90_i2c_clients, + .i2c_client_count = ARRAY_SIZE(lenovo_yb1_x90_i2c_clients), + .pdev_info = lenovo_yb1_x90_pdevs, + .pdev_count = ARRAY_SIZE(lenovo_yb1_x90_pdevs), + .gpiod_lookup_tables = lenovo_yb1_x90_gpios, + .init = lenovo_yb1_x90_init, +}; + +/* Lenovo Yoga Book X91F/L Windows tablet needs manual instantiation of the fg client */ +static const struct x86_i2c_client_info lenovo_yogabook_x91_i2c_clients[] __initconst = { + { + /* BQ27542 fuel-gauge */ + .board_info = { + .type = "bq27542", + .addr = 0x55, + .dev_name = "bq27542", + .swnode = &fg_bq25890_supply_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C1", + }, +}; + +const struct x86_dev_info lenovo_yogabook_x91_info __initconst = { + .i2c_client_info = lenovo_yogabook_x91_i2c_clients, + .i2c_client_count = ARRAY_SIZE(lenovo_yogabook_x91_i2c_clients), +}; + +/* Lenovo Yoga Tablet 2 1050F/L's Android factory img has everything hardcoded */ +static const struct property_entry lenovo_yoga_tab2_830_1050_bq24190_props[] = { + PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", tusb1211_chg_det_psy, 1), + PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node), + PROPERTY_ENTRY_BOOL("omit-battery-class"), + PROPERTY_ENTRY_BOOL("disable-reset"), + { } +}; + +static const struct software_node lenovo_yoga_tab2_830_1050_bq24190_node = { + .properties = lenovo_yoga_tab2_830_1050_bq24190_props, +}; + +static struct x86_gpio_button lenovo_yoga_tab2_830_1050_lid = { + .button = { + .code = SW_LID, + .active_low = true, + .desc = "lid_sw", + .type = EV_SW, + .wakeup = true, + .debounce_interval = 50, + }, + .chip = "INT33FC:02", + .pin = 26, +}; + +/* This gets filled by lenovo_yoga_tab2_830_1050_init() */ +static struct rmi_device_platform_data lenovo_yoga_tab2_830_1050_rmi_pdata = { }; + +static struct x86_i2c_client_info lenovo_yoga_tab2_830_1050_i2c_clients[] __initdata = { + { + /* + * This must be the first entry because lenovo_yoga_tab2_830_1050_init() + * may update its swnode. LSM303DA accelerometer + magnetometer. + */ + .board_info = { + .type = "lsm303d", + .addr = 0x1d, + .dev_name = "lsm303d", + }, + .adapter_path = "\\_SB_.I2C5", + }, { + /* bq24292i battery charger */ + .board_info = { + .type = "bq24190", + .addr = 0x6b, + .dev_name = "bq24292i", + .swnode = &lenovo_yoga_tab2_830_1050_bq24190_node, + .platform_data = &bq24190_pdata, + }, + .adapter_path = "\\_SB_.I2C1", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FC:02", + .index = 2, + .trigger = ACPI_EDGE_SENSITIVE, + .polarity = ACPI_ACTIVE_HIGH, + }, + }, { + /* BQ27541 fuel-gauge */ + .board_info = { + .type = "bq27541", + .addr = 0x55, + .dev_name = "bq27541", + .swnode = &fg_bq24190_supply_node, + }, + .adapter_path = "\\_SB_.I2C1", + }, { + /* Synaptics RMI touchscreen */ + .board_info = { + .type = "rmi4_i2c", + .addr = 0x38, + .dev_name = "rmi4_i2c", + .platform_data = &lenovo_yoga_tab2_830_1050_rmi_pdata, + }, + .adapter_path = "\\_SB_.I2C6", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_APIC, + .index = 0x45, + .trigger = ACPI_EDGE_SENSITIVE, + .polarity = ACPI_ACTIVE_HIGH, + }, + }, { + /* LP8557 Backlight controller */ + .board_info = { + .type = "lp8557", + .addr = 0x2c, + .dev_name = "lp8557", + .platform_data = &lenovo_lp8557_pdata, + }, + .adapter_path = "\\_SB_.I2C3", + }, +}; + +static struct gpiod_lookup_table lenovo_yoga_tab2_830_1050_int3496_gpios = { + .dev_id = "intel-int3496", + .table = { + GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_LOW), + GPIO_LOOKUP("INT33FC:02", 24, "id", GPIO_ACTIVE_HIGH), + { } + }, +}; + +#define LENOVO_YOGA_TAB2_830_1050_CODEC_NAME "spi-10WM5102:00" + +static struct gpiod_lookup_table lenovo_yoga_tab2_830_1050_codec_gpios = { + .dev_id = LENOVO_YOGA_TAB2_830_1050_CODEC_NAME, + .table = { + GPIO_LOOKUP("gpio_crystalcove", 3, "reset", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("INT33FC:01", 23, "wlf,ldoena", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("arizona", 2, "wlf,spkvdd-ena", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("arizona", 4, "wlf,micd-pol", GPIO_ACTIVE_LOW), + { } + }, +}; + +static struct gpiod_lookup_table * const lenovo_yoga_tab2_830_1050_gpios[] = { + &lenovo_yoga_tab2_830_1050_int3496_gpios, + &lenovo_yoga_tab2_830_1050_codec_gpios, + NULL +}; + +static int __init lenovo_yoga_tab2_830_1050_init(void); +static void lenovo_yoga_tab2_830_1050_exit(void); + +const struct x86_dev_info lenovo_yoga_tab2_830_1050_info __initconst = { + .i2c_client_info = lenovo_yoga_tab2_830_1050_i2c_clients, + .i2c_client_count = ARRAY_SIZE(lenovo_yoga_tab2_830_1050_i2c_clients), + .pdev_info = int3496_pdevs, + .pdev_count = 1, + .gpio_button = &lenovo_yoga_tab2_830_1050_lid, + .gpiod_lookup_tables = lenovo_yoga_tab2_830_1050_gpios, + .bat_swnode = &generic_lipo_hv_4v35_battery_node, + .modules = bq24190_modules, + .init = lenovo_yoga_tab2_830_1050_init, + .exit = lenovo_yoga_tab2_830_1050_exit, +}; + +/* + * The Lenovo Yoga Tablet 2 830 and 1050 (8" vs 10") versions use the same + * mainboard, but the 830 uses a portrait LCD panel with a landscape touchscreen, + * requiring the touchscreen driver to adjust the touch-coords to match the LCD. + * And requiring the accelerometer to have a mount-matrix set to correct for + * the 90° rotation of the LCD vs the frame. + */ +static const char * const lenovo_yoga_tab2_830_lms303d_mount_matrix[] = { + "0", "1", "0", + "-1", "0", "0", + "0", "0", "1" +}; + +static const struct property_entry lenovo_yoga_tab2_830_lms303d_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", lenovo_yoga_tab2_830_lms303d_mount_matrix), + { } +}; + +static const struct software_node lenovo_yoga_tab2_830_lms303d_node = { + .properties = lenovo_yoga_tab2_830_lms303d_props, +}; + +static int __init lenovo_yoga_tab2_830_1050_init_touchscreen(void) +{ + struct gpio_desc *gpiod; + int ret; + + /* Use PMIC GPIO 10 bootstrap pin to differentiate 830 vs 1050 */ + ret = x86_android_tablet_get_gpiod("gpio_crystalcove", 10, &gpiod); + if (ret) + return ret; + + ret = gpiod_get_value_cansleep(gpiod); + if (ret) { + pr_info("detected Lenovo Yoga Tablet 2 1050F/L\n"); + } else { + pr_info("detected Lenovo Yoga Tablet 2 830F/L\n"); + lenovo_yoga_tab2_830_1050_rmi_pdata.sensor_pdata.axis_align.swap_axes = true; + lenovo_yoga_tab2_830_1050_rmi_pdata.sensor_pdata.axis_align.flip_y = true; + lenovo_yoga_tab2_830_1050_i2c_clients[0].board_info.swnode = + &lenovo_yoga_tab2_830_lms303d_node; + } + + return 0; +} + +/* SUS (INT33FC:02) pin 6 needs to be configured as pmu_clk for the audio codec */ +static const struct pinctrl_map lenovo_yoga_tab2_830_1050_codec_pinctrl_map = + PIN_MAP_MUX_GROUP(LENOVO_YOGA_TAB2_830_1050_CODEC_NAME, "codec_32khz_clk", + "INT33FC:02", "pmu_clk2_grp", "pmu_clk"); + +static struct pinctrl *lenovo_yoga_tab2_830_1050_codec_pinctrl; +static struct sys_off_handler *lenovo_yoga_tab2_830_1050_sys_off_handler; + +static int __init lenovo_yoga_tab2_830_1050_init_codec(void) +{ + struct device *codec_dev; + struct pinctrl *pinctrl; + int ret; + + codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, + LENOVO_YOGA_TAB2_830_1050_CODEC_NAME); + if (!codec_dev) { + pr_err("error cannot find %s device\n", LENOVO_YOGA_TAB2_830_1050_CODEC_NAME); + return -ENODEV; + } + + ret = pinctrl_register_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map, 1); + if (ret) + goto err_put_device; + + pinctrl = pinctrl_get_select(codec_dev, "codec_32khz_clk"); + if (IS_ERR(pinctrl)) { + ret = dev_err_probe(codec_dev, PTR_ERR(pinctrl), "selecting codec_32khz_clk\n"); + goto err_unregister_mappings; + } + + /* We're done with the codec_dev now */ + put_device(codec_dev); + + lenovo_yoga_tab2_830_1050_codec_pinctrl = pinctrl; + return 0; + +err_unregister_mappings: + pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map); +err_put_device: + put_device(codec_dev); + return ret; +} + +/* + * These tablet's DSDT does not set acpi_gbl_reduced_hardware, so acpi_power_off + * gets used as pm_power_off handler. This causes "poweroff" on these tablets + * to hang hard. Requiring pressing the powerbutton for 30 seconds *twice* + * followed by a normal 3 second press to recover. Avoid this by doing an EFI + * poweroff instead. + */ +static int lenovo_yoga_tab2_830_1050_power_off(struct sys_off_data *data) +{ + efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); + + return NOTIFY_DONE; +} + +static int __init lenovo_yoga_tab2_830_1050_init(void) +{ + int ret; + + ret = lenovo_yoga_tab2_830_1050_init_touchscreen(); + if (ret) + return ret; + + ret = lenovo_yoga_tab2_830_1050_init_codec(); + if (ret) + return ret; + + /* SYS_OFF_PRIO_FIRMWARE + 1 so that it runs before acpi_power_off */ + lenovo_yoga_tab2_830_1050_sys_off_handler = + register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_FIRMWARE + 1, + lenovo_yoga_tab2_830_1050_power_off, NULL); + if (IS_ERR(lenovo_yoga_tab2_830_1050_sys_off_handler)) + return PTR_ERR(lenovo_yoga_tab2_830_1050_sys_off_handler); + + return 0; +} + +static void lenovo_yoga_tab2_830_1050_exit(void) +{ + unregister_sys_off_handler(lenovo_yoga_tab2_830_1050_sys_off_handler); + + if (lenovo_yoga_tab2_830_1050_codec_pinctrl) { + pinctrl_put(lenovo_yoga_tab2_830_1050_codec_pinctrl); + pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map); + } +} + +/* Lenovo Yoga Tab 3 Pro YT3-X90F */ + +/* + * There are 2 batteries, with 2 bq27500 fuel-gauges and 2 bq25892 chargers, + * "bq25890-charger-1" is instantiated from: drivers/i2c/busses/i2c-cht-wc.c. + */ +static const char * const lenovo_yt3_bq25892_0_suppliers[] = { "cht_wcove_pwrsrc" }; +static const char * const bq25890_1_psy[] = { "bq25890-charger-1" }; + +static const struct property_entry fg_bq25890_1_supply_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq25890_1_psy), + { } +}; + +static const struct software_node fg_bq25890_1_supply_node = { + .properties = fg_bq25890_1_supply_props, +}; + +/* bq25892 charger settings for the flat lipo battery behind the screen */ +static const struct property_entry lenovo_yt3_bq25892_0_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("supplied-from", lenovo_yt3_bq25892_0_suppliers), + PROPERTY_ENTRY_STRING("linux,power-supply-name", "bq25892-second-chrg"), + PROPERTY_ENTRY_U32("linux,iinlim-percentage", 40), + PROPERTY_ENTRY_BOOL("linux,skip-reset"), + /* Values taken from Android Factory Image */ + PROPERTY_ENTRY_U32("ti,charge-current", 2048000), + PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000), + PROPERTY_ENTRY_U32("ti,termination-current", 128000), + PROPERTY_ENTRY_U32("ti,precharge-current", 128000), + PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3700000), + PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000), + PROPERTY_ENTRY_U32("ti,boost-max-current", 500000), + PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"), + { } +}; + +static const struct software_node lenovo_yt3_bq25892_0_node = { + .properties = lenovo_yt3_bq25892_0_props, +}; + +static const struct property_entry lenovo_yt3_hideep_ts_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 1600), + PROPERTY_ENTRY_U32("touchscreen-size-y", 2560), + PROPERTY_ENTRY_U32("touchscreen-max-pressure", 255), + { } +}; + +static const struct software_node lenovo_yt3_hideep_ts_node = { + .properties = lenovo_yt3_hideep_ts_props, +}; + +static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { + { + /* bq27500 fuel-gauge for the flat lipo battery behind the screen */ + .board_info = { + .type = "bq27500", + .addr = 0x55, + .dev_name = "bq27500_0", + .swnode = &fg_bq25890_supply_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C1", + }, { + /* bq25892 charger for the flat lipo battery behind the screen */ + .board_info = { + .type = "bq25892", + .addr = 0x6b, + .dev_name = "bq25892_0", + .swnode = &lenovo_yt3_bq25892_0_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C1", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FF:01", + .index = 5, + .trigger = ACPI_EDGE_SENSITIVE, + .polarity = ACPI_ACTIVE_LOW, + }, + }, { + /* bq27500 fuel-gauge for the round li-ion cells in the hinge */ + .board_info = { + .type = "bq27500", + .addr = 0x55, + .dev_name = "bq27500_1", + .swnode = &fg_bq25890_1_supply_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C2", + }, { + /* HiDeep IST520E Touchscreen */ + .board_info = { + .type = "hideep_ts", + .addr = 0x6c, + .dev_name = "hideep_ts", + .swnode = &lenovo_yt3_hideep_ts_node, + }, + .adapter_path = "\\_SB_.PCI0.I2C6", + .irq_data = { + .type = X86_ACPI_IRQ_TYPE_GPIOINT, + .chip = "INT33FF:03", + .index = 77, + .trigger = ACPI_LEVEL_SENSITIVE, + .polarity = ACPI_ACTIVE_LOW, + }, + }, { + /* LP8557 Backlight controller */ + .board_info = { + .type = "lp8557", + .addr = 0x2c, + .dev_name = "lp8557", + .platform_data = &lenovo_lp8557_pdata, + }, + .adapter_path = "\\_SB_.PCI0.I2C1", + } +}; + +static int __init lenovo_yt3_init(void) +{ + struct gpio_desc *gpiod; + int ret; + + /* + * The "bq25892_0" charger IC has its /CE (Charge-Enable) and OTG pins + * connected to GPIOs, rather then having them hardwired to the correct + * values as is normally done. + * + * The bq25890_charger driver controls these through I2C, but this only + * works if not overridden by the pins. Set these pins here: + * 1. Set /CE to 0 to allow charging. + * 2. Set OTG to 0 disable V5 boost output since the 5V boost output of + * the main "bq25892_1" charger is used when necessary. + */ + + /* /CE pin */ + ret = x86_android_tablet_get_gpiod("INT33FF:02", 22, &gpiod); + if (ret < 0) + return ret; + + /* + * The gpio_desc returned by x86_android_tablet_get_gpiod() is a "raw" + * gpio_desc, that is there is no way to pass lookup-flags like + * GPIO_ACTIVE_LOW. Set the GPIO to 0 here to enable charging since + * the /CE pin is active-low, but not marked as such in the gpio_desc. + */ + gpiod_set_value(gpiod, 0); + + /* OTG pin */ + ret = x86_android_tablet_get_gpiod("INT33FF:03", 19, &gpiod); + if (ret < 0) + return ret; + + gpiod_set_value(gpiod, 0); + + /* Enable the regulators used by the touchscreen */ + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0x9b, 0x02, 0xff); + intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0xa0, 0x02, 0xff); + + return 0; +} + +static struct gpiod_lookup_table lenovo_yt3_hideep_gpios = { + .dev_id = "i2c-hideep_ts", + .table = { + GPIO_LOOKUP("INT33FF:00", 7, "reset", GPIO_ACTIVE_LOW), + { } + }, +}; + +static struct gpiod_lookup_table * const lenovo_yt3_gpios[] = { + &lenovo_yt3_hideep_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), + .gpiod_lookup_tables = lenovo_yt3_gpios, + .init = lenovo_yt3_init, +}; |