mirror of
https://github.com/torvalds/linux.git
synced 2026-05-24 15:12:13 +02:00
platform/x86: x86-android-tablets: Add Lenovo Yoga Tab 3 (YT3-X90F) charger + fuel-gauge data
The Lenovo Yoga Tab 3 (YT3-X90F) is an Intel Cherry Trail based tablet which ships with Android as Factory OS. Its DSDT contains a bunch of I2C devices which are not actually there, causing various resource conflicts. Use acpi_quirk_skip_i2c_client_enumeration() to not enumerate these. The YT3-X90F has quite a bit of exotic hardware, this adds initial support by manually instantiating the i2c-clients for the 2 charger + 2 fuel-gauge chips used for the 2 batteries. Support for other parts of the hw will be added by follow-up patches. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20221127182458.104528-1-hdegoede@redhat.com
This commit is contained in:
Hans de Goede
parent
902ce18ab1
commit
b6c14ff1de
|
|
@ -5,7 +5,7 @@
|
|||
* devices typically have a bunch of things hardcoded, rather than specified
|
||||
* in their DSDT.
|
||||
*
|
||||
* Copyright (C) 2021 Hans de Goede <hdegoede@redhat.com>
|
||||
* Copyright (C) 2021-2022 Hans de Goede <hdegoede@redhat.com>
|
||||
*/
|
||||
|
||||
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
||||
|
|
@ -987,6 +987,130 @@ static void lenovo_yoga_tab2_830_1050_exit(void)
|
|||
}
|
||||
}
|
||||
|
||||
/* 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 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",
|
||||
}
|
||||
};
|
||||
|
||||
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);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static 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),
|
||||
.init = lenovo_yt3_init,
|
||||
};
|
||||
|
||||
/* Medion Lifetab S10346 tablets have an Android factory img with everything hardcoded */
|
||||
static const char * const medion_lifetab_s10346_accel_mount_matrix[] = {
|
||||
"0", "1", "0",
|
||||
|
|
@ -1327,6 +1451,15 @@ static const struct dmi_system_id x86_android_tablet_ids[] __initconst = {
|
|||
},
|
||||
.driver_data = (void *)&lenovo_yoga_tab2_830_1050_info,
|
||||
},
|
||||
{
|
||||
/* Lenovo Yoga Tab 3 Pro YT3-X90F */
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
|
||||
DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
|
||||
},
|
||||
.driver_data = (void *)&lenovo_yt3_info,
|
||||
},
|
||||
{
|
||||
/* Medion Lifetab S10346 */
|
||||
.matches = {
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user