2007-05-04 04:51:18 +08:00
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/*
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* Battery driver for One Laptop Per Child board.
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*
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2010-08-10 01:13:09 +08:00
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* Copyright © 2006-2010 David Woodhouse <dwmw2@infradead.org>
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2007-05-04 04:51:18 +08:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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2009-06-30 14:14:00 +08:00
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#include <linux/kernel.h>
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2007-05-04 04:51:18 +08:00
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#include <linux/module.h>
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2018-06-20 13:47:28 +08:00
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#include <linux/mod_devicetable.h>
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2009-06-30 14:15:26 +08:00
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#include <linux/types.h>
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2007-05-04 04:51:18 +08:00
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#include <linux/err.h>
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2009-06-30 14:15:26 +08:00
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#include <linux/device.h>
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2019-04-18 22:46:50 +08:00
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#include <linux/of.h>
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2007-05-04 04:51:18 +08:00
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/jiffies.h>
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#include <linux/sched.h>
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2012-07-11 16:16:29 +08:00
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#include <linux/olpc-ec.h>
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2007-05-04 04:51:18 +08:00
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#include <asm/olpc.h>
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#define EC_BAT_VOLTAGE 0x10 /* uint16_t, *9.76/32, mV */
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#define EC_BAT_CURRENT 0x11 /* int16_t, *15.625/120, mA */
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2008-05-15 07:20:38 +08:00
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#define EC_BAT_ACR 0x12 /* int16_t, *6250/15, µAh */
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2007-05-04 04:51:18 +08:00
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#define EC_BAT_TEMP 0x13 /* uint16_t, *100/256, °C */
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#define EC_AMB_TEMP 0x14 /* uint16_t, *100/256, °C */
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#define EC_BAT_STATUS 0x15 /* uint8_t, bitmask */
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#define EC_BAT_SOC 0x16 /* uint8_t, percentage */
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#define EC_BAT_SERIAL 0x17 /* uint8_t[6] */
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#define EC_BAT_EEPROM 0x18 /* uint8_t adr as input, uint8_t output */
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#define EC_BAT_ERRCODE 0x1f /* uint8_t, bitmask */
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#define BAT_STAT_PRESENT 0x01
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#define BAT_STAT_FULL 0x02
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#define BAT_STAT_LOW 0x04
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#define BAT_STAT_DESTROY 0x08
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#define BAT_STAT_AC 0x10
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#define BAT_STAT_CHARGING 0x20
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#define BAT_STAT_DISCHARGING 0x40
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2009-06-30 14:16:17 +08:00
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#define BAT_STAT_TRICKLE 0x80
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2007-05-04 04:51:18 +08:00
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#define BAT_ERR_INFOFAIL 0x02
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#define BAT_ERR_OVERVOLTAGE 0x04
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#define BAT_ERR_OVERTEMP 0x05
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#define BAT_ERR_GAUGESTOP 0x06
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#define BAT_ERR_OUT_OF_CONTROL 0x07
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#define BAT_ERR_ID_FAIL 0x09
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#define BAT_ERR_ACR_FAIL 0x10
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#define BAT_ADDR_MFR_TYPE 0x5F
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2019-04-18 22:46:51 +08:00
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struct olpc_battery_data {
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struct power_supply *olpc_ac;
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struct power_supply *olpc_bat;
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char bat_serial[17];
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};
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2007-05-04 04:51:18 +08:00
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/*********************************************************************
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* Power
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*********************************************************************/
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static int olpc_ac_get_prop(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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int ret = 0;
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uint8_t status;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
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if (ret)
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return ret;
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val->intval = !!(status & BAT_STAT_AC);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static enum power_supply_property olpc_ac_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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2015-03-12 15:44:11 +08:00
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static const struct power_supply_desc olpc_ac_desc = {
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2007-05-04 04:51:18 +08:00
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.name = "olpc-ac",
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.type = POWER_SUPPLY_TYPE_MAINS,
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.properties = olpc_ac_props,
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.num_properties = ARRAY_SIZE(olpc_ac_props),
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.get_property = olpc_ac_get_prop,
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};
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2019-04-18 22:46:51 +08:00
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static int olpc_bat_get_status(struct olpc_battery_data *data,
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union power_supply_propval *val, uint8_t ec_byte)
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2008-05-03 04:41:59 +08:00
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{
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if (olpc_platform_info.ecver > 0x44) {
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2009-06-30 14:16:17 +08:00
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if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE))
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2008-05-03 04:41:59 +08:00
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val->intval = POWER_SUPPLY_STATUS_CHARGING;
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else if (ec_byte & BAT_STAT_DISCHARGING)
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val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
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else if (ec_byte & BAT_STAT_FULL)
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val->intval = POWER_SUPPLY_STATUS_FULL;
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else /* er,... */
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val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
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} else {
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/* Older EC didn't report charge/discharge bits */
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if (!(ec_byte & BAT_STAT_AC)) /* No AC means discharging */
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val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
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else if (ec_byte & BAT_STAT_FULL)
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val->intval = POWER_SUPPLY_STATUS_FULL;
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else /* Not _necessarily_ true but EC doesn't tell all yet */
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val->intval = POWER_SUPPLY_STATUS_CHARGING;
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}
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return 0;
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}
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static int olpc_bat_get_health(union power_supply_propval *val)
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{
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uint8_t ec_byte;
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int ret;
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ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
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if (ret)
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return ret;
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switch (ec_byte) {
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case 0:
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val->intval = POWER_SUPPLY_HEALTH_GOOD;
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break;
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case BAT_ERR_OVERTEMP:
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val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
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break;
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case BAT_ERR_OVERVOLTAGE:
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val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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break;
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case BAT_ERR_INFOFAIL:
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case BAT_ERR_OUT_OF_CONTROL:
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case BAT_ERR_ID_FAIL:
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case BAT_ERR_ACR_FAIL:
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val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
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break;
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default:
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/* Eep. We don't know this failure code */
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ret = -EIO;
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}
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return ret;
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}
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static int olpc_bat_get_mfr(union power_supply_propval *val)
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{
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uint8_t ec_byte;
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int ret;
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ec_byte = BAT_ADDR_MFR_TYPE;
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ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
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if (ret)
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return ret;
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switch (ec_byte >> 4) {
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case 1:
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val->strval = "Gold Peak";
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break;
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case 2:
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val->strval = "BYD";
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break;
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default:
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val->strval = "Unknown";
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break;
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}
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return ret;
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}
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static int olpc_bat_get_tech(union power_supply_propval *val)
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{
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uint8_t ec_byte;
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int ret;
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ec_byte = BAT_ADDR_MFR_TYPE;
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ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
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if (ret)
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return ret;
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switch (ec_byte & 0xf) {
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case 1:
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val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;
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break;
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case 2:
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val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe;
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break;
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default:
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val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
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break;
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}
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return ret;
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}
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2010-12-11 06:05:19 +08:00
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static int olpc_bat_get_charge_full_design(union power_supply_propval *val)
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{
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uint8_t ec_byte;
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union power_supply_propval tech;
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int ret, mfr;
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ret = olpc_bat_get_tech(&tech);
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if (ret)
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return ret;
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ec_byte = BAT_ADDR_MFR_TYPE;
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ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
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if (ret)
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return ret;
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mfr = ec_byte >> 4;
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switch (tech.intval) {
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case POWER_SUPPLY_TECHNOLOGY_NiMH:
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switch (mfr) {
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case 1: /* Gold Peak */
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val->intval = 3000000*.8;
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break;
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default:
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return -EIO;
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}
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break;
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case POWER_SUPPLY_TECHNOLOGY_LiFe:
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switch (mfr) {
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2012-07-16 05:43:51 +08:00
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case 1: /* Gold Peak, fall through */
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2010-12-11 06:05:19 +08:00
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case 2: /* BYD */
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2012-07-16 05:43:51 +08:00
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val->intval = 2800000;
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2010-12-11 06:05:19 +08:00
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break;
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default:
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return -EIO;
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}
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break;
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default:
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return -EIO;
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}
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return ret;
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}
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2010-12-11 06:05:20 +08:00
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static int olpc_bat_get_charge_now(union power_supply_propval *val)
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{
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uint8_t soc;
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union power_supply_propval full;
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int ret;
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ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1);
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if (ret)
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return ret;
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ret = olpc_bat_get_charge_full_design(&full);
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if (ret)
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return ret;
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val->intval = soc * (full.intval / 100);
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return 0;
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}
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2012-07-16 05:43:25 +08:00
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static int olpc_bat_get_voltage_max_design(union power_supply_propval *val)
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{
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uint8_t ec_byte;
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union power_supply_propval tech;
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int mfr;
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int ret;
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ret = olpc_bat_get_tech(&tech);
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if (ret)
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return ret;
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ec_byte = BAT_ADDR_MFR_TYPE;
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ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
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if (ret)
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return ret;
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mfr = ec_byte >> 4;
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switch (tech.intval) {
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case POWER_SUPPLY_TECHNOLOGY_NiMH:
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switch (mfr) {
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case 1: /* Gold Peak */
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val->intval = 6000000;
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break;
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default:
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return -EIO;
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}
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break;
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case POWER_SUPPLY_TECHNOLOGY_LiFe:
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switch (mfr) {
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case 1: /* Gold Peak */
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val->intval = 6400000;
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break;
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case 2: /* BYD */
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val->intval = 6500000;
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break;
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default:
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return -EIO;
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}
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break;
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default:
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return -EIO;
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}
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return ret;
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}
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|
2007-05-04 04:51:18 +08:00
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/*********************************************************************
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* Battery properties
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*********************************************************************/
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static int olpc_bat_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
|
2019-04-18 22:46:51 +08:00
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struct olpc_battery_data *data = power_supply_get_drvdata(psy);
|
2007-05-04 04:51:18 +08:00
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int ret = 0;
|
2008-10-16 13:01:23 +08:00
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__be16 ec_word;
|
2007-05-04 04:51:18 +08:00
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uint8_t ec_byte;
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2008-10-16 13:01:23 +08:00
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__be64 ser_buf;
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2007-05-04 04:51:18 +08:00
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ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1);
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if (ret)
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return ret;
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/* Theoretically there's a race here -- the battery could be
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removed immediately after we check whether it's present, and
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then we query for some other property of the now-absent battery.
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It doesn't matter though -- the EC will return the last-known
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information, and it's as if we just ran that _little_ bit faster
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|
|
and managed to read it out before the battery went away. */
|
2009-06-30 14:16:17 +08:00
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|
|
if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) &&
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psp != POWER_SUPPLY_PROP_PRESENT)
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2007-05-04 04:51:18 +08:00
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|
|
return -ENODEV;
|
|
|
|
|
|
|
|
switch (psp) {
|
|
|
|
case POWER_SUPPLY_PROP_STATUS:
|
2019-04-18 22:46:51 +08:00
|
|
|
ret = olpc_bat_get_status(data, val, ec_byte);
|
2008-05-03 04:41:59 +08:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
2009-07-02 21:45:18 +08:00
|
|
|
case POWER_SUPPLY_PROP_CHARGE_TYPE:
|
|
|
|
if (ec_byte & BAT_STAT_TRICKLE)
|
|
|
|
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
|
|
|
|
else if (ec_byte & BAT_STAT_CHARGING)
|
|
|
|
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
|
|
|
|
else
|
|
|
|
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
|
|
|
|
break;
|
2007-05-04 04:51:18 +08:00
|
|
|
case POWER_SUPPLY_PROP_PRESENT:
|
2009-06-30 14:16:17 +08:00
|
|
|
val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
|
|
|
|
BAT_STAT_TRICKLE));
|
2007-05-04 04:51:18 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
case POWER_SUPPLY_PROP_HEALTH:
|
|
|
|
if (ec_byte & BAT_STAT_DESTROY)
|
|
|
|
val->intval = POWER_SUPPLY_HEALTH_DEAD;
|
|
|
|
else {
|
2008-05-03 04:41:59 +08:00
|
|
|
ret = olpc_bat_get_health(val);
|
2007-05-04 04:51:18 +08:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case POWER_SUPPLY_PROP_MANUFACTURER:
|
2008-05-03 04:41:59 +08:00
|
|
|
ret = olpc_bat_get_mfr(val);
|
2007-05-04 04:51:18 +08:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
|
|
|
case POWER_SUPPLY_PROP_TECHNOLOGY:
|
2008-05-03 04:41:59 +08:00
|
|
|
ret = olpc_bat_get_tech(val);
|
2007-05-04 04:51:18 +08:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
|
|
|
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
|
2010-12-11 06:05:21 +08:00
|
|
|
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
2007-05-04 04:51:18 +08:00
|
|
|
ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2010-09-26 02:19:26 +08:00
|
|
|
val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
|
2007-05-04 04:51:18 +08:00
|
|
|
break;
|
|
|
|
case POWER_SUPPLY_PROP_CURRENT_AVG:
|
2010-12-11 06:05:21 +08:00
|
|
|
case POWER_SUPPLY_PROP_CURRENT_NOW:
|
2007-05-04 04:51:18 +08:00
|
|
|
ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2010-09-26 02:19:26 +08:00
|
|
|
val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120;
|
2007-05-04 04:51:18 +08:00
|
|
|
break;
|
|
|
|
case POWER_SUPPLY_PROP_CAPACITY:
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
val->intval = ec_byte;
|
|
|
|
break;
|
2009-06-30 14:13:01 +08:00
|
|
|
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
|
|
|
|
if (ec_byte & BAT_STAT_FULL)
|
|
|
|
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
|
|
|
|
else if (ec_byte & BAT_STAT_LOW)
|
|
|
|
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
|
|
|
|
else
|
|
|
|
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
|
|
|
|
break;
|
2010-12-11 06:05:19 +08:00
|
|
|
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
|
|
|
|
ret = olpc_bat_get_charge_full_design(val);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
2010-12-11 06:05:20 +08:00
|
|
|
case POWER_SUPPLY_PROP_CHARGE_NOW:
|
|
|
|
ret = olpc_bat_get_charge_now(val);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
2007-05-04 04:51:18 +08:00
|
|
|
case POWER_SUPPLY_PROP_TEMP:
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2008-10-16 13:01:23 +08:00
|
|
|
|
2018-11-17 00:23:47 +08:00
|
|
|
val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256;
|
2007-05-04 04:51:18 +08:00
|
|
|
break;
|
|
|
|
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
|
|
|
|
ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2018-11-17 00:23:47 +08:00
|
|
|
val->intval = (int)be16_to_cpu(ec_word) * 10 / 256;
|
2007-05-04 04:51:18 +08:00
|
|
|
break;
|
2008-05-13 09:46:29 +08:00
|
|
|
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2010-09-26 02:19:26 +08:00
|
|
|
val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15;
|
2008-05-13 09:46:29 +08:00
|
|
|
break;
|
2008-05-04 13:31:42 +08:00
|
|
|
case POWER_SUPPLY_PROP_SERIAL_NUMBER:
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2019-04-18 22:46:51 +08:00
|
|
|
sprintf(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
|
|
|
|
val->strval = data->bat_serial;
|
2008-05-04 13:31:42 +08:00
|
|
|
break;
|
2012-07-16 05:43:25 +08:00
|
|
|
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
|
|
|
|
ret = olpc_bat_get_voltage_max_design(val);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
break;
|
2007-05-04 04:51:18 +08:00
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-12-30 03:12:01 +08:00
|
|
|
static enum power_supply_property olpc_xo1_bat_props[] = {
|
2007-05-04 04:51:18 +08:00
|
|
|
POWER_SUPPLY_PROP_STATUS,
|
2009-07-02 21:45:18 +08:00
|
|
|
POWER_SUPPLY_PROP_CHARGE_TYPE,
|
2007-05-04 04:51:18 +08:00
|
|
|
POWER_SUPPLY_PROP_PRESENT,
|
|
|
|
POWER_SUPPLY_PROP_HEALTH,
|
|
|
|
POWER_SUPPLY_PROP_TECHNOLOGY,
|
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_AVG,
|
2010-12-11 06:05:21 +08:00
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
2007-05-04 04:51:18 +08:00
|
|
|
POWER_SUPPLY_PROP_CURRENT_AVG,
|
2010-12-11 06:05:21 +08:00
|
|
|
POWER_SUPPLY_PROP_CURRENT_NOW,
|
2007-05-04 04:51:18 +08:00
|
|
|
POWER_SUPPLY_PROP_CAPACITY,
|
2009-06-30 14:13:01 +08:00
|
|
|
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
|
2010-12-11 06:05:19 +08:00
|
|
|
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
|
2010-12-11 06:05:20 +08:00
|
|
|
POWER_SUPPLY_PROP_CHARGE_NOW,
|
2007-05-04 04:51:18 +08:00
|
|
|
POWER_SUPPLY_PROP_TEMP,
|
|
|
|
POWER_SUPPLY_PROP_TEMP_AMBIENT,
|
|
|
|
POWER_SUPPLY_PROP_MANUFACTURER,
|
2008-05-04 13:31:42 +08:00
|
|
|
POWER_SUPPLY_PROP_SERIAL_NUMBER,
|
2008-05-13 09:46:29 +08:00
|
|
|
POWER_SUPPLY_PROP_CHARGE_COUNTER,
|
2012-07-16 05:43:25 +08:00
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
|
2007-05-04 04:51:18 +08:00
|
|
|
};
|
|
|
|
|
2010-12-30 03:12:01 +08:00
|
|
|
/* XO-1.5 does not have ambient temperature property */
|
|
|
|
static enum power_supply_property olpc_xo15_bat_props[] = {
|
|
|
|
POWER_SUPPLY_PROP_STATUS,
|
|
|
|
POWER_SUPPLY_PROP_CHARGE_TYPE,
|
|
|
|
POWER_SUPPLY_PROP_PRESENT,
|
|
|
|
POWER_SUPPLY_PROP_HEALTH,
|
|
|
|
POWER_SUPPLY_PROP_TECHNOLOGY,
|
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_AVG,
|
2011-01-13 06:23:23 +08:00
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
2010-12-30 03:12:01 +08:00
|
|
|
POWER_SUPPLY_PROP_CURRENT_AVG,
|
2011-01-13 06:23:23 +08:00
|
|
|
POWER_SUPPLY_PROP_CURRENT_NOW,
|
2010-12-30 03:12:01 +08:00
|
|
|
POWER_SUPPLY_PROP_CAPACITY,
|
|
|
|
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
|
2011-01-13 06:23:23 +08:00
|
|
|
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
|
|
|
|
POWER_SUPPLY_PROP_CHARGE_NOW,
|
2010-12-30 03:12:01 +08:00
|
|
|
POWER_SUPPLY_PROP_TEMP,
|
|
|
|
POWER_SUPPLY_PROP_MANUFACTURER,
|
|
|
|
POWER_SUPPLY_PROP_SERIAL_NUMBER,
|
|
|
|
POWER_SUPPLY_PROP_CHARGE_COUNTER,
|
2012-07-16 05:43:25 +08:00
|
|
|
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
|
2010-12-30 03:12:01 +08:00
|
|
|
};
|
|
|
|
|
2008-05-03 04:41:58 +08:00
|
|
|
/* EEPROM reading goes completely around the power_supply API, sadly */
|
|
|
|
|
|
|
|
#define EEPROM_START 0x20
|
|
|
|
#define EEPROM_END 0x80
|
|
|
|
#define EEPROM_SIZE (EEPROM_END - EEPROM_START)
|
|
|
|
|
2010-05-13 09:28:57 +08:00
|
|
|
static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj,
|
2008-05-03 04:41:58 +08:00
|
|
|
struct bin_attribute *attr, char *buf, loff_t off, size_t count)
|
|
|
|
{
|
|
|
|
uint8_t ec_byte;
|
2009-06-30 14:14:00 +08:00
|
|
|
int ret;
|
|
|
|
int i;
|
2008-05-03 04:41:58 +08:00
|
|
|
|
2009-06-30 14:14:00 +08:00
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
ec_byte = EEPROM_START + off + i;
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &buf[i], 1);
|
2008-05-03 04:41:58 +08:00
|
|
|
if (ret) {
|
2009-06-30 14:14:00 +08:00
|
|
|
pr_err("olpc-battery: "
|
|
|
|
"EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n",
|
|
|
|
ec_byte, ret);
|
2008-05-03 04:41:58 +08:00
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2017-08-02 18:29:38 +08:00
|
|
|
static const struct bin_attribute olpc_bat_eeprom = {
|
2008-05-03 04:41:58 +08:00
|
|
|
.attr = {
|
|
|
|
.name = "eeprom",
|
|
|
|
.mode = S_IRUGO,
|
|
|
|
},
|
2015-07-27 05:26:49 +08:00
|
|
|
.size = EEPROM_SIZE,
|
2008-05-03 04:41:58 +08:00
|
|
|
.read = olpc_bat_eeprom_read,
|
|
|
|
};
|
|
|
|
|
2009-06-30 14:15:26 +08:00
|
|
|
/* Allow userspace to see the specific error value pulled from the EC */
|
|
|
|
|
|
|
|
static ssize_t olpc_bat_error_read(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
uint8_t ec_byte;
|
|
|
|
ssize_t ret;
|
|
|
|
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return sprintf(buf, "%d\n", ec_byte);
|
|
|
|
}
|
|
|
|
|
2017-08-21 19:43:12 +08:00
|
|
|
static const struct device_attribute olpc_bat_error = {
|
2009-06-30 14:15:26 +08:00
|
|
|
.attr = {
|
|
|
|
.name = "error",
|
|
|
|
.mode = S_IRUGO,
|
|
|
|
},
|
|
|
|
.show = olpc_bat_error_read,
|
|
|
|
};
|
|
|
|
|
2007-05-04 04:51:18 +08:00
|
|
|
/*********************************************************************
|
|
|
|
* Initialisation
|
|
|
|
*********************************************************************/
|
|
|
|
|
2015-03-12 15:44:11 +08:00
|
|
|
static struct power_supply_desc olpc_bat_desc = {
|
2011-08-11 04:45:36 +08:00
|
|
|
.name = "olpc-battery",
|
2007-05-04 04:51:18 +08:00
|
|
|
.get_property = olpc_bat_get_property,
|
|
|
|
.use_for_apm = 1,
|
|
|
|
};
|
|
|
|
|
2011-08-11 04:46:02 +08:00
|
|
|
static int olpc_battery_suspend(struct platform_device *pdev,
|
|
|
|
pm_message_t state)
|
|
|
|
{
|
2019-04-18 22:46:51 +08:00
|
|
|
struct olpc_battery_data *data = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
if (device_may_wakeup(&data->olpc_ac->dev))
|
2011-08-11 04:46:02 +08:00
|
|
|
olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR);
|
|
|
|
else
|
|
|
|
olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR);
|
|
|
|
|
2019-04-18 22:46:51 +08:00
|
|
|
if (device_may_wakeup(&data->olpc_bat->dev))
|
2011-08-11 04:46:02 +08:00
|
|
|
olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
|
|
|
|
| EC_SCI_SRC_BATERR);
|
|
|
|
else
|
|
|
|
olpc_ec_wakeup_clear(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
|
|
|
|
| EC_SCI_SRC_BATERR);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-11-20 02:22:23 +08:00
|
|
|
static int olpc_battery_probe(struct platform_device *pdev)
|
2007-05-04 04:51:18 +08:00
|
|
|
{
|
2019-04-18 22:46:51 +08:00
|
|
|
struct power_supply_config psy_cfg = {};
|
|
|
|
struct olpc_battery_data *data;
|
2007-05-04 04:51:18 +08:00
|
|
|
uint8_t status;
|
2019-04-18 22:46:51 +08:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
|
|
|
|
if (!data)
|
|
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(pdev, data);
|
2007-05-04 04:51:18 +08:00
|
|
|
|
2008-05-03 04:41:59 +08:00
|
|
|
/*
|
|
|
|
* We've seen a number of EC protocol changes; this driver requires
|
|
|
|
* the latest EC protocol, supported by 0x44 and above.
|
|
|
|
*/
|
|
|
|
if (olpc_platform_info.ecver < 0x44) {
|
|
|
|
printk(KERN_NOTICE "OLPC EC version 0x%02x too old for "
|
|
|
|
"battery driver.\n", olpc_platform_info.ecver);
|
2007-05-04 04:51:18 +08:00
|
|
|
return -ENXIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
/* Ignore the status. It doesn't actually matter */
|
|
|
|
|
2019-04-18 22:46:51 +08:00
|
|
|
psy_cfg.of_node = pdev->dev.of_node;
|
|
|
|
psy_cfg.drv_data = data;
|
|
|
|
|
2019-04-18 22:46:52 +08:00
|
|
|
data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc, &psy_cfg);
|
2019-04-18 22:46:51 +08:00
|
|
|
if (IS_ERR(data->olpc_ac))
|
|
|
|
return PTR_ERR(data->olpc_ac);
|
|
|
|
|
2019-04-18 22:46:50 +08:00
|
|
|
if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) {
|
|
|
|
/* XO-1.5 */
|
2015-03-12 15:44:11 +08:00
|
|
|
olpc_bat_desc.properties = olpc_xo15_bat_props;
|
|
|
|
olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
|
2019-04-18 22:46:50 +08:00
|
|
|
} else {
|
|
|
|
/* XO-1 */
|
2015-03-12 15:44:11 +08:00
|
|
|
olpc_bat_desc.properties = olpc_xo1_bat_props;
|
|
|
|
olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
|
2010-12-30 03:12:01 +08:00
|
|
|
}
|
2007-05-04 04:51:18 +08:00
|
|
|
|
2019-04-18 22:46:52 +08:00
|
|
|
data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc, &psy_cfg);
|
|
|
|
if (IS_ERR(data->olpc_bat))
|
|
|
|
return PTR_ERR(data->olpc_bat);
|
2007-05-04 04:51:18 +08:00
|
|
|
|
2019-04-18 22:46:51 +08:00
|
|
|
ret = device_create_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom);
|
2008-05-03 04:41:58 +08:00
|
|
|
if (ret)
|
2019-04-18 22:46:52 +08:00
|
|
|
return ret;
|
2008-05-03 04:41:58 +08:00
|
|
|
|
2019-04-18 22:46:51 +08:00
|
|
|
ret = device_create_file(&data->olpc_bat->dev, &olpc_bat_error);
|
2009-06-30 14:15:26 +08:00
|
|
|
if (ret)
|
|
|
|
goto error_failed;
|
|
|
|
|
2011-08-11 04:46:02 +08:00
|
|
|
if (olpc_ec_wakeup_available()) {
|
2019-04-18 22:46:51 +08:00
|
|
|
device_set_wakeup_capable(&data->olpc_ac->dev, true);
|
|
|
|
device_set_wakeup_capable(&data->olpc_bat->dev, true);
|
2011-08-11 04:46:02 +08:00
|
|
|
}
|
|
|
|
|
2011-08-11 04:45:36 +08:00
|
|
|
return 0;
|
2007-05-04 04:51:18 +08:00
|
|
|
|
2009-06-30 14:15:26 +08:00
|
|
|
error_failed:
|
2019-04-18 22:46:51 +08:00
|
|
|
device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom);
|
2007-05-04 04:51:18 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-11-20 02:26:07 +08:00
|
|
|
static int olpc_battery_remove(struct platform_device *pdev)
|
2007-05-04 04:51:18 +08:00
|
|
|
{
|
2019-04-18 22:46:51 +08:00
|
|
|
struct olpc_battery_data *data = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
device_remove_file(&data->olpc_bat->dev, &olpc_bat_error);
|
|
|
|
device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom);
|
2011-08-11 04:45:36 +08:00
|
|
|
return 0;
|
2007-05-04 04:51:18 +08:00
|
|
|
}
|
|
|
|
|
2012-12-22 07:04:54 +08:00
|
|
|
static const struct of_device_id olpc_battery_ids[] = {
|
2011-08-11 04:45:36 +08:00
|
|
|
{ .compatible = "olpc,xo1-battery" },
|
2019-04-18 22:46:50 +08:00
|
|
|
{ .compatible = "olpc,xo1.5-battery" },
|
2011-08-11 04:45:36 +08:00
|
|
|
{}
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, olpc_battery_ids);
|
|
|
|
|
olpc_battery: Fix section mismatch noise
This patch fixes the following noise (by renaming _drv to _driver):
WARNING: drivers/power/olpc_battery.o(.data+0x100): Section mismatch in reference from the variable olpc_battery_drv to the function .devinit.text:olpc_battery_probe()
The variable olpc_battery_drv references
the function __devinit olpc_battery_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console
WARNING: drivers/power/olpc_battery.o(.data+0x104): Section mismatch in reference from the variable olpc_battery_drv to the function .devexit.text:olpc_battery_remove()
The variable olpc_battery_drv references
the function __devexit olpc_battery_remove()
If the reference is valid then annotate the
variable with __exit* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console
WARNING: drivers/power/olpc_battery.o(.data+0x128): Section mismatch in reference from the variable olpc_battery_drv to the variable .devinit.rodata:olpc_battery_ids
The variable olpc_battery_drv references
the variable __devinitconst olpc_battery_ids
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2011-11-25 02:49:07 +08:00
|
|
|
static struct platform_driver olpc_battery_driver = {
|
2011-08-11 04:45:36 +08:00
|
|
|
.driver = {
|
|
|
|
.name = "olpc-battery",
|
|
|
|
.of_match_table = olpc_battery_ids,
|
|
|
|
},
|
|
|
|
.probe = olpc_battery_probe,
|
2012-11-20 02:20:40 +08:00
|
|
|
.remove = olpc_battery_remove,
|
2011-08-11 04:46:02 +08:00
|
|
|
.suspend = olpc_battery_suspend,
|
2011-08-11 04:45:36 +08:00
|
|
|
};
|
|
|
|
|
2011-11-26 12:01:10 +08:00
|
|
|
module_platform_driver(olpc_battery_driver);
|
2007-05-04 04:51:18 +08:00
|
|
|
|
|
|
|
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_DESCRIPTION("Battery driver for One Laptop Per Child 'XO' machine");
|