diff options
Diffstat (limited to 'drivers/platform/x86/x86-android-tablets/shared-psy-info.c')
| -rw-r--r-- | drivers/platform/x86/x86-android-tablets/shared-psy-info.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/platform/x86/x86-android-tablets/shared-psy-info.c b/drivers/platform/x86/x86-android-tablets/shared-psy-info.c new file mode 100644 index 000000000000..29fc466f76fe --- /dev/null +++ b/drivers/platform/x86/x86-android-tablets/shared-psy-info.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Shared psy info for 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 <hansg@kernel.org> + */ + +#include <linux/gpio/machine.h> +#include <linux/gpio/property.h> +#include <linux/platform_device.h> +#include <linux/power/bq24190_charger.h> +#include <linux/property.h> +#include <linux/regulator/machine.h> + +#include "shared-psy-info.h" +#include "x86-android-tablets.h" + +/* Generic / shared charger / battery settings */ +const char * const tusb1211_chg_det_psy[] = { "tusb1211-charger-detect" }; +const char * const bq24190_psy[] = { "bq24190-charger" }; +const char * const bq25890_psy[] = { "bq25890-charger-0" }; + +static const struct property_entry fg_bq24190_supply_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy), + { } +}; + +const struct software_node fg_bq24190_supply_node = { + .properties = fg_bq24190_supply_props, +}; + +static const struct property_entry fg_bq25890_supply_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq25890_psy), + { } +}; + +const struct software_node fg_bq25890_supply_node = { + .properties = fg_bq25890_supply_props, +}; + +static const u32 generic_lipo_battery_ovc_cap_celcius[] = { 25 }; + +static const u32 generic_lipo_4v2_battery_ovc_cap_table0[] = { + 4200000, 100, + 4150000, 95, + 4110000, 90, + 4075000, 85, + 4020000, 80, + 3982500, 75, + 3945000, 70, + 3907500, 65, + 3870000, 60, + 3853333, 55, + 3836667, 50, + 3820000, 45, + 3803333, 40, + 3786667, 35, + 3770000, 30, + 3750000, 25, + 3730000, 20, + 3710000, 15, + 3690000, 10, + 3610000, 5, + 3350000, 0 +}; + +static const u32 generic_lipo_hv_4v35_battery_ovc_cap_table0[] = { + 4300000, 100, + 4250000, 96, + 4200000, 91, + 4150000, 86, + 4110000, 82, + 4075000, 77, + 4020000, 73, + 3982500, 68, + 3945000, 64, + 3907500, 59, + 3870000, 55, + 3853333, 50, + 3836667, 45, + 3820000, 41, + 3803333, 36, + 3786667, 32, + 3770000, 27, + 3750000, 23, + 3730000, 18, + 3710000, 14, + 3690000, 9, + 3610000, 5, + 3350000, 0 +}; + +/* Standard LiPo (max 4.2V) settings used by most devs with a LiPo battery */ +static const struct property_entry generic_lipo_4v2_battery_props[] = { + PROPERTY_ENTRY_STRING("compatible", "simple-battery"), + PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion-polymer"), + PROPERTY_ENTRY_U32("precharge-current-microamp", 256000), + PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000), + PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 2048000), + PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4208000), + PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000), + PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-celsius", + generic_lipo_battery_ovc_cap_celcius), + PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-table-0", + generic_lipo_4v2_battery_ovc_cap_table0), + { } +}; + +const struct software_node generic_lipo_4v2_battery_node = { + .properties = generic_lipo_4v2_battery_props, +}; + +const struct software_node *generic_lipo_4v2_battery_swnodes[] = { + &generic_lipo_4v2_battery_node, + NULL +}; + +/* LiPo HighVoltage (max 4.35V) settings used by most devs with a HV battery */ +static const struct property_entry generic_lipo_hv_4v35_battery_props[] = { + PROPERTY_ENTRY_STRING("compatible", "simple-battery"), + PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion"), + PROPERTY_ENTRY_U32("precharge-current-microamp", 256000), + PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000), + PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 1856000), + PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4352000), + PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000), + PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-celsius", + generic_lipo_battery_ovc_cap_celcius), + PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-table-0", + generic_lipo_hv_4v35_battery_ovc_cap_table0), + { } +}; + +const struct software_node generic_lipo_hv_4v35_battery_node = { + .properties = generic_lipo_hv_4v35_battery_props, +}; + +const struct software_node *generic_lipo_hv_4v35_battery_swnodes[] = { + &generic_lipo_hv_4v35_battery_node, + NULL +}; + +/* For enabling the bq24190 5V boost based on id-pin */ +static struct regulator_consumer_supply intel_int3496_consumer = { + .supply = "vbus", + .dev_name = "intel-int3496", +}; + +static const struct regulator_init_data bq24190_vbus_init_data = { + .constraints = { + .name = "bq24190_vbus", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .consumer_supplies = &intel_int3496_consumer, + .num_consumer_supplies = 1, +}; + +struct bq24190_platform_data bq24190_pdata = { + .regulator_init_data = &bq24190_vbus_init_data, +}; + +const char * const bq24190_modules[] __initconst = { + "intel_crystal_cove_charger", /* For the bq24190 IRQ */ + "bq24190_charger", /* For the Vbus regulator for intel-int3496 */ + NULL +}; + +static const struct property_entry int3496_reference_props[] __initconst = { + PROPERTY_ENTRY_GPIO("vbus-gpios", &baytrail_gpiochip_nodes[1], 15, GPIO_ACTIVE_HIGH), + PROPERTY_ENTRY_GPIO("mux-gpios", &baytrail_gpiochip_nodes[2], 1, GPIO_ACTIVE_HIGH), + PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 18, GPIO_ACTIVE_HIGH), + { } +}; + +/* Generic pdevs array and gpio-lookups for micro USB ID pin handling */ +const struct platform_device_info int3496_pdevs[] __initconst = { + { + /* For micro USB ID pin handling */ + .name = "intel-int3496", + .id = PLATFORM_DEVID_NONE, + .properties = int3496_reference_props, + }, +}; |