drivers/platform/x86/x86-android-tablets/shared-psy-info.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Shared psy info for X86 tablets which ship with Android as the factory image
   4  * and which have broken DSDT tables. The factory kernels shipped on these
   5  * devices typically have a bunch of things hardcoded, rather than specified
   6  * in their DSDT.
   7  *
   8  * Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com>
   9  */
  10
  11 #include <linux/gpio/machine.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/power/bq24190_charger.h>
  14 #include <linux/property.h>
  15 #include <linux/regulator/machine.h>
  16
  17 #include "shared-psy-info.h"
  18
  19 /* Generic / shared charger / battery settings */
  20 const char * const tusb1211_chg_det_psy[] = { "tusb1211-charger-detect" };
  21 const char * const bq24190_psy[] = { "bq24190-charger" };
  22 const char * const bq25890_psy[] = { "bq25890-charger-0" };
  23
  24 static const struct property_entry fg_bq24190_supply_props[] = {
  25         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
  26         { }
  27 };
  28
  29 const struct software_node fg_bq24190_supply_node = {
  30         .properties = fg_bq24190_supply_props,
  31 };
  32
  33 static const struct property_entry fg_bq25890_supply_props[] = {
  34         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq25890_psy),
  35         { }
  36 };
  37
  38 const struct software_node fg_bq25890_supply_node = {
  39         .properties = fg_bq25890_supply_props,
  40 };
  41
  42 /* LiPo HighVoltage (max 4.35V) settings used by most devs with a HV battery */
  43 static const struct property_entry generic_lipo_hv_4v35_battery_props[] = {
  44         PROPERTY_ENTRY_STRING("compatible", "simple-battery"),
  45         PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion"),
  46         PROPERTY_ENTRY_U32("precharge-current-microamp", 256000),
  47         PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000),
  48         PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 1856000),
  49         PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4352000),
  50         PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000),
  51         { }
  52 };
  53
  54 const struct software_node generic_lipo_hv_4v35_battery_node = {
  55         .properties = generic_lipo_hv_4v35_battery_props,
  56 };
  57
  58 /* For enabling the bq24190 5V boost based on id-pin */
  59 static struct regulator_consumer_supply intel_int3496_consumer = {
  60         .supply = "vbus",
  61         .dev_name = "intel-int3496",
  62 };
  63
  64 static const struct regulator_init_data bq24190_vbus_init_data = {
  65         .constraints = {
  66                 .name = "bq24190_vbus",
  67                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
  68         },
  69         .consumer_supplies = &intel_int3496_consumer,
  70         .num_consumer_supplies = 1,
  71 };
  72
  73 struct bq24190_platform_data bq24190_pdata = {
  74         .regulator_init_data = &bq24190_vbus_init_data,
  75 };
  76
  77 const char * const bq24190_modules[] __initconst = {
  78         "intel_crystal_cove_charger", /* For the bq24190 IRQ */
  79         "bq24190_charger",            /* For the Vbus regulator for intel-int3496 */
  80         NULL
  81 };
  82
  83 /* Generic platform device array and GPIO lookup table for micro USB ID pin handling */
  84 const struct platform_device_info int3496_pdevs[] __initconst = {
  85         {
  86                 /* For micro USB ID pin handling */
  87                 .name = "intel-int3496",
  88                 .id = PLATFORM_DEVID_NONE,
  89         },
  90 };
  91
  92 struct gpiod_lookup_table int3496_reference_gpios = {
  93         .dev_id = "intel-int3496",
  94         .table = {
  95                 GPIO_LOOKUP("INT33FC:01", 15, "vbus", GPIO_ACTIVE_HIGH),
  96                 GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_HIGH),
  97                 GPIO_LOOKUP("INT33FC:02", 18, "id", GPIO_ACTIVE_HIGH),
  98                 { }
  99         },
 100 };