^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Battery driver for One Laptop Per Child board.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright © 2006-2010 David Woodhouse <dwmw2@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/power_supply.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/olpc-ec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define EC_BAT_VOLTAGE 0x10 /* uint16_t, *9.76/32, mV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define EC_BAT_CURRENT 0x11 /* int16_t, *15.625/120, mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define EC_BAT_ACR 0x12 /* int16_t, *6250/15, µAh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define EC_BAT_TEMP 0x13 /* uint16_t, *100/256, °C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define EC_AMB_TEMP 0x14 /* uint16_t, *100/256, °C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define EC_BAT_STATUS 0x15 /* uint8_t, bitmask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define EC_BAT_SOC 0x16 /* uint8_t, percentage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define EC_BAT_SERIAL 0x17 /* uint8_t[6] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define EC_BAT_EEPROM 0x18 /* uint8_t adr as input, uint8_t output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define EC_BAT_ERRCODE 0x1f /* uint8_t, bitmask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define BAT_STAT_PRESENT 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define BAT_STAT_FULL 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define BAT_STAT_LOW 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define BAT_STAT_DESTROY 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define BAT_STAT_AC 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define BAT_STAT_CHARGING 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define BAT_STAT_DISCHARGING 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define BAT_STAT_TRICKLE 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define BAT_ERR_INFOFAIL 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define BAT_ERR_OVERVOLTAGE 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define BAT_ERR_OVERTEMP 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define BAT_ERR_GAUGESTOP 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define BAT_ERR_OUT_OF_CONTROL 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define BAT_ERR_ID_FAIL 0x09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define BAT_ERR_ACR_FAIL 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define BAT_ADDR_MFR_TYPE 0x5F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct olpc_battery_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct power_supply *olpc_ac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct power_supply *olpc_bat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) char bat_serial[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bool new_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) bool little_endian;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*********************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Power
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *********************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int olpc_ac_get_prop(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) uint8_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) case POWER_SUPPLY_PROP_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) val->intval = !!(status & BAT_STAT_AC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static enum power_supply_property olpc_ac_props[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) POWER_SUPPLY_PROP_ONLINE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static const struct power_supply_desc olpc_ac_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .name = "olpc_ac",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .type = POWER_SUPPLY_TYPE_MAINS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .properties = olpc_ac_props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .num_properties = ARRAY_SIZE(olpc_ac_props),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .get_property = olpc_ac_get_prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int olpc_bat_get_status(struct olpc_battery_data *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) union power_supply_propval *val, uint8_t ec_byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (data->new_proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) val->intval = POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) else if (ec_byte & BAT_STAT_DISCHARGING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) else if (ec_byte & BAT_STAT_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) val->intval = POWER_SUPPLY_STATUS_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) else /* er,... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Older EC didn't report charge/discharge bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (!(ec_byte & BAT_STAT_AC)) /* No AC means discharging */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) else if (ec_byte & BAT_STAT_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) val->intval = POWER_SUPPLY_STATUS_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) else /* Not _necessarily_ true but EC doesn't tell all yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) val->intval = POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int olpc_bat_get_health(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) switch (ec_byte) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) val->intval = POWER_SUPPLY_HEALTH_GOOD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) case BAT_ERR_OVERTEMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) case BAT_ERR_OVERVOLTAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) case BAT_ERR_INFOFAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) case BAT_ERR_OUT_OF_CONTROL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) case BAT_ERR_ID_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) case BAT_ERR_ACR_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* Eep. We don't know this failure code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int olpc_bat_get_mfr(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ec_byte = BAT_ADDR_MFR_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) switch (ec_byte >> 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) val->strval = "Gold Peak";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) val->strval = "BYD";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) val->strval = "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int olpc_bat_get_tech(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ec_byte = BAT_ADDR_MFR_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) switch (ec_byte & 0xf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static int olpc_bat_get_charge_full_design(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) union power_supply_propval tech;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int ret, mfr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ret = olpc_bat_get_tech(&tech);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ec_byte = BAT_ADDR_MFR_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) mfr = ec_byte >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) switch (tech.intval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) case POWER_SUPPLY_TECHNOLOGY_NiMH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) switch (mfr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) case 1: /* Gold Peak */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) val->intval = 3000000*.8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) case POWER_SUPPLY_TECHNOLOGY_LiFe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) switch (mfr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) case 1: /* Gold Peak, fall through */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) case 2: /* BYD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) val->intval = 2800000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int olpc_bat_get_charge_now(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) uint8_t soc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) union power_supply_propval full;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ret = olpc_bat_get_charge_full_design(&full);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) val->intval = soc * (full.intval / 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int olpc_bat_get_voltage_max_design(union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) union power_supply_propval tech;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) int mfr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ret = olpc_bat_get_tech(&tech);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ec_byte = BAT_ADDR_MFR_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) mfr = ec_byte >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) switch (tech.intval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) case POWER_SUPPLY_TECHNOLOGY_NiMH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) switch (mfr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) case 1: /* Gold Peak */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) val->intval = 6000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) case POWER_SUPPLY_TECHNOLOGY_LiFe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) switch (mfr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) case 1: /* Gold Peak */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) val->intval = 6400000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) case 2: /* BYD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) val->intval = 6500000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) static u16 ecword_to_cpu(struct olpc_battery_data *data, u16 ec_word)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (data->little_endian)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return le16_to_cpu((__force __le16)ec_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return be16_to_cpu((__force __be16)ec_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /*********************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * Battery properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) *********************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static int olpc_bat_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct olpc_battery_data *data = power_supply_get_drvdata(psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) u16 ec_word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) __be64 ser_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /* Theoretically there's a race here -- the battery could be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) removed immediately after we check whether it's present, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) then we query for some other property of the now-absent battery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) It doesn't matter though -- the EC will return the last-known
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) information, and it's as if we just ran that _little_ bit faster
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) and managed to read it out before the battery went away. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) psp != POWER_SUPPLY_PROP_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) case POWER_SUPPLY_PROP_STATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) ret = olpc_bat_get_status(data, val, ec_byte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) case POWER_SUPPLY_PROP_CHARGE_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (ec_byte & BAT_STAT_TRICKLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) else if (ec_byte & BAT_STAT_CHARGING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) case POWER_SUPPLY_PROP_PRESENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) BAT_STAT_TRICKLE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) case POWER_SUPPLY_PROP_HEALTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (ec_byte & BAT_STAT_DESTROY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) val->intval = POWER_SUPPLY_HEALTH_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ret = olpc_bat_get_health(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) case POWER_SUPPLY_PROP_MANUFACTURER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) ret = olpc_bat_get_mfr(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) case POWER_SUPPLY_PROP_TECHNOLOGY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ret = olpc_bat_get_tech(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) case POWER_SUPPLY_PROP_VOLTAGE_AVG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) case POWER_SUPPLY_PROP_VOLTAGE_NOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) val->intval = ecword_to_cpu(data, ec_word) * 9760L / 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) case POWER_SUPPLY_PROP_CURRENT_AVG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) case POWER_SUPPLY_PROP_CURRENT_NOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) val->intval = ecword_to_cpu(data, ec_word) * 15625L / 120;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) case POWER_SUPPLY_PROP_CAPACITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) val->intval = ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (ec_byte & BAT_STAT_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) else if (ec_byte & BAT_STAT_LOW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) ret = olpc_bat_get_charge_full_design(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) case POWER_SUPPLY_PROP_CHARGE_NOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) ret = olpc_bat_get_charge_now(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) case POWER_SUPPLY_PROP_TEMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) val->intval = ecword_to_cpu(data, ec_word) * 10 / 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) case POWER_SUPPLY_PROP_TEMP_AMBIENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) val->intval = (int)ecword_to_cpu(data, ec_word) * 10 / 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case POWER_SUPPLY_PROP_CHARGE_COUNTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) val->intval = ecword_to_cpu(data, ec_word) * 6250 / 15;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case POWER_SUPPLY_PROP_SERIAL_NUMBER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) sprintf(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) val->strval = data->bat_serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) ret = olpc_bat_get_voltage_max_design(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static enum power_supply_property olpc_xo1_bat_props[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) POWER_SUPPLY_PROP_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) POWER_SUPPLY_PROP_CHARGE_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) POWER_SUPPLY_PROP_PRESENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) POWER_SUPPLY_PROP_HEALTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) POWER_SUPPLY_PROP_TECHNOLOGY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) POWER_SUPPLY_PROP_VOLTAGE_AVG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) POWER_SUPPLY_PROP_VOLTAGE_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) POWER_SUPPLY_PROP_CURRENT_AVG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) POWER_SUPPLY_PROP_CURRENT_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) POWER_SUPPLY_PROP_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) POWER_SUPPLY_PROP_CAPACITY_LEVEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) POWER_SUPPLY_PROP_CHARGE_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) POWER_SUPPLY_PROP_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) POWER_SUPPLY_PROP_TEMP_AMBIENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) POWER_SUPPLY_PROP_MANUFACTURER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) POWER_SUPPLY_PROP_SERIAL_NUMBER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) POWER_SUPPLY_PROP_CHARGE_COUNTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) /* XO-1.5 does not have ambient temperature property */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) static enum power_supply_property olpc_xo15_bat_props[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) POWER_SUPPLY_PROP_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) POWER_SUPPLY_PROP_CHARGE_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) POWER_SUPPLY_PROP_PRESENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) POWER_SUPPLY_PROP_HEALTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) POWER_SUPPLY_PROP_TECHNOLOGY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) POWER_SUPPLY_PROP_VOLTAGE_AVG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) POWER_SUPPLY_PROP_VOLTAGE_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) POWER_SUPPLY_PROP_CURRENT_AVG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) POWER_SUPPLY_PROP_CURRENT_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) POWER_SUPPLY_PROP_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) POWER_SUPPLY_PROP_CAPACITY_LEVEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) POWER_SUPPLY_PROP_CHARGE_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) POWER_SUPPLY_PROP_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) POWER_SUPPLY_PROP_MANUFACTURER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) POWER_SUPPLY_PROP_SERIAL_NUMBER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) POWER_SUPPLY_PROP_CHARGE_COUNTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* EEPROM reading goes completely around the power_supply API, sadly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) #define EEPROM_START 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) #define EEPROM_END 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) #define EEPROM_SIZE (EEPROM_END - EEPROM_START)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct bin_attribute *attr, char *buf, loff_t off, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) for (i = 0; i < count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) ec_byte = EEPROM_START + off + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &buf[i], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) pr_err("olpc-battery: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) "EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ec_byte, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static struct bin_attribute olpc_bat_eeprom = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) .attr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) .name = "eeprom",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) .mode = S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) .size = EEPROM_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .read = olpc_bat_eeprom_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) /* Allow userspace to see the specific error value pulled from the EC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static ssize_t olpc_bat_error_read(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) uint8_t ec_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return sprintf(buf, "%d\n", ec_byte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static struct device_attribute olpc_bat_error = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) .attr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) .name = "error",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) .mode = S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) .show = olpc_bat_error_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static struct attribute *olpc_bat_sysfs_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) &olpc_bat_error.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) static struct bin_attribute *olpc_bat_sysfs_bin_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) &olpc_bat_eeprom,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) static const struct attribute_group olpc_bat_sysfs_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) .attrs = olpc_bat_sysfs_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) .bin_attrs = olpc_bat_sysfs_bin_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) static const struct attribute_group *olpc_bat_sysfs_groups[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) &olpc_bat_sysfs_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /*********************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) * Initialisation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) *********************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) static struct power_supply_desc olpc_bat_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) .name = "olpc_battery",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) .get_property = olpc_bat_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) .use_for_apm = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) static int olpc_battery_suspend(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) pm_message_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) struct olpc_battery_data *data = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) if (device_may_wakeup(&data->olpc_ac->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (device_may_wakeup(&data->olpc_bat->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) | EC_SCI_SRC_BATERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) olpc_ec_wakeup_clear(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) | EC_SCI_SRC_BATERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) static int olpc_battery_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) struct power_supply_config bat_psy_cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct power_supply_config ac_psy_cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct olpc_battery_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) uint8_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) uint8_t ecver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) platform_set_drvdata(pdev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /* See if the EC is already there and get the EC revision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) ret = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ecver, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) if (of_find_compatible_node(NULL, NULL, "olpc,xo1.75-ec")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) /* XO 1.75 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) data->new_proto = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) data->little_endian = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) } else if (ecver > 0x44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) /* XO 1 or 1.5 with a new EC firmware. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) data->new_proto = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) } else if (ecver < 0x44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * We've seen a number of EC protocol changes; this driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * requires the latest EC protocol, supported by 0x44 and above.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) printk(KERN_NOTICE "OLPC EC version 0x%02x too old for "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) "battery driver.\n", ecver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) /* Ignore the status. It doesn't actually matter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) ac_psy_cfg.of_node = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) ac_psy_cfg.drv_data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) &ac_psy_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) if (IS_ERR(data->olpc_ac))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) return PTR_ERR(data->olpc_ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) /* XO-1.5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) olpc_bat_desc.properties = olpc_xo15_bat_props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) /* XO-1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) olpc_bat_desc.properties = olpc_xo1_bat_props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) bat_psy_cfg.of_node = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) bat_psy_cfg.drv_data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) bat_psy_cfg.attr_grp = olpc_bat_sysfs_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) &bat_psy_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (IS_ERR(data->olpc_bat))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return PTR_ERR(data->olpc_bat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (olpc_ec_wakeup_available()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) device_set_wakeup_capable(&data->olpc_ac->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) device_set_wakeup_capable(&data->olpc_bat->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) static const struct of_device_id olpc_battery_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) { .compatible = "olpc,xo1-battery" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) { .compatible = "olpc,xo1.5-battery" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) MODULE_DEVICE_TABLE(of, olpc_battery_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) static struct platform_driver olpc_battery_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) .name = "olpc-battery",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) .of_match_table = olpc_battery_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) .probe = olpc_battery_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) .suspend = olpc_battery_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) module_platform_driver(olpc_battery_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) MODULE_DESCRIPTION("Battery driver for One Laptop Per Child 'XO' machine");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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