static ssize_t ec_debugfs_cmd_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos) { int i, m; unsigned char ec_cmd[EC_MAX_CMD_ARGS]; unsigned int ec_cmd_int[EC_MAX_CMD_ARGS]; char cmdbuf[64]; int ec_cmd_bytes; mutex_lock(&ec_debugfs_cmd_lock); size = simple_write_to_buffer(cmdbuf, sizeof(cmdbuf), ppos, buf, size); m = sscanf(cmdbuf, "%x:%u %x %x %x %x %x", &ec_cmd_int[0], &ec_debugfs_resp_bytes, &ec_cmd_int[1], &ec_cmd_int[2], &ec_cmd_int[3], &ec_cmd_int[4], &ec_cmd_int[5]); if (m < 2 || ec_debugfs_resp_bytes > EC_MAX_CMD_REPLY) { /* reset to prevent overflow on read */ ec_debugfs_resp_bytes = 0; printk(KERN_DEBUG "olpc-ec: bad ec cmd: " "cmd:response-count [arg1 [arg2 ...]]\n"); size = -EINVAL; goto out; } /* convert scanf'd ints to char */ ec_cmd_bytes = m - 2; for (i = 0; i <= ec_cmd_bytes; i++) ec_cmd[i] = ec_cmd_int[i]; printk(KERN_DEBUG "olpc-ec: debugfs cmd 0x%02x with %d args " "%02x %02x %02x %02x %02x, want %d returns\n", ec_cmd[0], ec_cmd_bytes, ec_cmd[1], ec_cmd[2], ec_cmd[3], ec_cmd[4], ec_cmd[5], ec_debugfs_resp_bytes); olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : &ec_cmd[1], ec_cmd_bytes, ec_debugfs_resp, ec_debugfs_resp_bytes); printk(KERN_DEBUG "olpc-ec: response " "%02x %02x %02x %02x %02x %02x %02x %02x (%d bytes expected)\n", ec_debugfs_resp[0], ec_debugfs_resp[1], ec_debugfs_resp[2], ec_debugfs_resp[3], ec_debugfs_resp[4], ec_debugfs_resp[5], ec_debugfs_resp[6], ec_debugfs_resp[7], ec_debugfs_resp_bytes); out: mutex_unlock(&ec_debugfs_cmd_lock); return size; }
static int __init olpc_init(void) { unsigned char *romsig; /* The ioremap check is dangerous; limit what we run it on */ if (!is_geode() || geode_has_vsa2()) return 0; spin_lock_init(&ec_lock); romsig = ioremap(0xffffffc0, 16); if (!romsig) return 0; if (strncmp(romsig, "CL1 Q", 7)) goto unmap; if (strncmp(romsig+6, romsig+13, 3)) { printk(KERN_INFO "OLPC BIOS signature looks invalid. " "Assuming not OLPC\n"); goto unmap; } printk(KERN_INFO "OLPC board with OpenFirmware %.16s\n", romsig); olpc_platform_info.flags |= OLPC_F_PRESENT; /* get the platform revision */ platform_detect(); /* assume B1 and above models always have a DCON */ if (olpc_board_at_least(olpc_board(0xb1))) olpc_platform_info.flags |= OLPC_F_DCON; /* get the EC revision */ olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, (unsigned char *) &olpc_platform_info.ecver, 1); /* check to see if the VSA exists */ if (geode_has_vsa2()) olpc_platform_info.flags |= OLPC_F_VSA; printk(KERN_INFO "OLPC board revision %s%X (EC=%x)\n", ((olpc_platform_info.boardrev & 0xf) < 8) ? "pre" : "", olpc_platform_info.boardrev >> 4, olpc_platform_info.ecver); unmap: iounmap(romsig); return 0; }
static int olpc_bat_get_voltage_max_design(union power_supply_propval *val) { uint8_t ec_byte; union power_supply_propval tech; int mfr; int ret; ret = olpc_bat_get_tech(&tech); if (ret) return ret; ec_byte = BAT_ADDR_MFR_TYPE; ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); if (ret) return ret; mfr = ec_byte >> 4; switch (tech.intval) { case POWER_SUPPLY_TECHNOLOGY_NiMH: switch (mfr) { case 1: /* Gold Peak */ val->intval = 6000000; break; default: return -EIO; } break; case POWER_SUPPLY_TECHNOLOGY_LiFe: switch (mfr) { case 1: /* Gold Peak */ val->intval = 6400000; break; case 2: /* BYD */ val->intval = 6500000; break; default: return -EIO; } break; default: return -EIO; } return ret; }
static int __maybe_unused olpc_xo175_ec_resume(struct device *dev) { u8 x = 0; /* * The resume hint is only needed if no other commands are * being sent during resume. all it does is tell the EC * the SoC is definitely awake. */ olpc_ec_cmd(CMD_SUSPEND_HINT, &x, 1, NULL, 0); /* Enable all EC events while we're awake */ olpc_xo175_ec_set_event_mask(EC_ALL_EVENTS); return 0; }
static int olpc_bat_get_charge_now(union power_supply_propval *val) { uint8_t soc; union power_supply_propval full; int ret; ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1); if (ret) return ret; ret = olpc_bat_get_charge_full_design(&full); if (ret) return ret; val->intval = soc * (full.intval / 100); return 0; }
static int __init olpc_init(void) { int r = 0; if (!olpc_ofw_present() || !platform_detect()) return 0; spin_lock_init(&ec_lock); /* assume B1 and above models always have a DCON */ if (olpc_board_at_least(olpc_board(0xb1))) olpc_platform_info.flags |= OLPC_F_DCON; /* get the EC revision */ olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, (unsigned char *) &olpc_platform_info.ecver, 1); #ifdef CONFIG_PCI_OLPC /* If the VSA exists let it emulate PCI, if not emulate in kernel. * XO-1 only. */ if (olpc_platform_info.boardrev < olpc_board_pre(0xd0) && !cs5535_has_vsa2()) x86_init.pci.arch_init = pci_olpc_init; #endif /* EC version 0x5f adds support for wide SCI mask */ if (olpc_platform_info.ecver >= 0x5f) olpc_platform_info.flags |= OLPC_F_EC_WIDE_SCI; printk(KERN_INFO "OLPC board revision %s%X (EC=%x)\n", ((olpc_platform_info.boardrev & 0xf) < 8) ? "pre" : "", olpc_platform_info.boardrev >> 4, olpc_platform_info.ecver); if (olpc_platform_info.boardrev < olpc_board_pre(0xd0)) { /* XO-1 */ r = add_xo1_platform_devices(); if (r) return r; } register_syscore_ops(&olpc_syscore_ops); setup_debugfs(); return 0; }
static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { uint8_t ec_byte; int ret; int i; 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); if (ret) { pr_err("olpc-battery: " "EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n", ec_byte, ret); return -EIO; } } return count; }
static int __init olpc_bat_init(void) { int ret = 0; uint8_t status; if (!olpc_platform_info.ecver) return -ENXIO; if (olpc_platform_info.ecver < 0x43) { printk(KERN_NOTICE "OLPC EC version 0x%02x too old for battery driver.\n", olpc_platform_info.ecver); 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 */ bat_pdev = platform_device_register_simple("olpc-battery", 0, NULL, 0); if (IS_ERR(bat_pdev)) return PTR_ERR(bat_pdev); ret = power_supply_register(&bat_pdev->dev, &olpc_ac); if (ret) goto ac_failed; olpc_bat.name = bat_pdev->name; ret = power_supply_register(&bat_pdev->dev, &olpc_bat); if (ret) goto battery_failed; goto success; battery_failed: power_supply_unregister(&olpc_ac); ac_failed: platform_device_unregister(bat_pdev); success: return ret; }
static int olpc_ac_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { int ret = 0; uint8_t status; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1); if (ret) return ret; val->intval = !!(status & BAT_STAT_AC); break; default: ret = -EINVAL; break; } return ret; }
static int olpc_bat_get_tech(union power_supply_propval *val) { uint8_t ec_byte; int ret; ec_byte = BAT_ADDR_MFR_TYPE; ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); if (ret) return ret; switch (ec_byte & 0xf) { case 1: val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH; break; case 2: val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe; break; default: val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; break; } return ret; }
static int olpc_bat_get_mfr(union power_supply_propval *val) { uint8_t ec_byte; int ret; ec_byte = BAT_ADDR_MFR_TYPE; ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); if (ret) return ret; switch (ec_byte >> 4) { case 1: val->strval = "Gold Peak"; break; case 2: val->strval = "BYD"; break; default: val->strval = "Unknown"; break; } return ret; }
static int olpc_bat_get_health(union power_supply_propval *val) { uint8_t ec_byte; int ret; ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1); if (ret) return ret; switch (ec_byte) { case 0: val->intval = POWER_SUPPLY_HEALTH_GOOD; break; case BAT_ERR_OVERTEMP: val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; break; case BAT_ERR_OVERVOLTAGE: val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; break; case BAT_ERR_INFOFAIL: case BAT_ERR_OUT_OF_CONTROL: case BAT_ERR_ID_FAIL: case BAT_ERR_ACR_FAIL: val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; break; default: /* Eep. We don't know this failure code */ ret = -EIO; } return ret; }
static int olpc_battery_probe(struct platform_device *pdev) { struct power_supply_config bat_psy_cfg = {}; struct power_supply_config ac_psy_cfg = {}; struct olpc_battery_data *data; uint8_t status; uint8_t ecver; int ret; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; platform_set_drvdata(pdev, data); /* See if the EC is already there and get the EC revision */ ret = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ecver, 1); if (ret) return ret; if (of_find_compatible_node(NULL, NULL, "olpc,xo1.75-ec")) { /* XO 1.75 */ data->new_proto = true; data->little_endian = true; } else if (ecver > 0x44) { /* XO 1 or 1.5 with a new EC firmware. */ data->new_proto = true; } else if (ecver < 0x44) { /* * We've seen a number of EC protocol changes; this driver * requires the latest EC protocol, supported by 0x44 and above. */ printk(KERN_NOTICE "OLPC EC version 0x%02x too old for " "battery driver.\n", ecver); 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 */ ac_psy_cfg.of_node = pdev->dev.of_node; ac_psy_cfg.drv_data = data; data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc, &ac_psy_cfg); if (IS_ERR(data->olpc_ac)) return PTR_ERR(data->olpc_ac); if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) { /* XO-1.5 */ olpc_bat_desc.properties = olpc_xo15_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props); } else { /* XO-1 */ olpc_bat_desc.properties = olpc_xo1_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } bat_psy_cfg.of_node = pdev->dev.of_node; bat_psy_cfg.drv_data = data; bat_psy_cfg.attr_grp = olpc_bat_sysfs_groups; data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc, &bat_psy_cfg); if (IS_ERR(data->olpc_bat)) return PTR_ERR(data->olpc_bat); if (olpc_ec_wakeup_available()) { device_set_wakeup_capable(&data->olpc_ac->dev, true); device_set_wakeup_capable(&data->olpc_bat->dev, true); } return 0; }
static int __init olpc_bat_init(void) { int ret = 0; uint8_t status; if (!olpc_platform_info.ecver) return -ENXIO; /* * 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); 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 */ bat_pdev = platform_device_register_simple("olpc-battery", 0, NULL, 0); if (IS_ERR(bat_pdev)) return PTR_ERR(bat_pdev); ret = power_supply_register(&bat_pdev->dev, &olpc_ac); if (ret) goto ac_failed; olpc_bat.name = bat_pdev->name; if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */ olpc_bat.properties = olpc_xo15_bat_props; olpc_bat.num_properties = ARRAY_SIZE(olpc_xo15_bat_props); } else { /* XO-1 */ olpc_bat.properties = olpc_xo1_bat_props; olpc_bat.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } ret = power_supply_register(&bat_pdev->dev, &olpc_bat); if (ret) goto battery_failed; ret = device_create_bin_file(olpc_bat.dev, &olpc_bat_eeprom); if (ret) goto eeprom_failed; ret = device_create_file(olpc_bat.dev, &olpc_bat_error); if (ret) goto error_failed; goto success; error_failed: device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom); eeprom_failed: power_supply_unregister(&olpc_bat); battery_failed: power_supply_unregister(&olpc_ac); ac_failed: platform_device_unregister(bat_pdev); success: return ret; }
/********************************************************************* * Battery properties *********************************************************************/ static int olpc_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { int ret = 0; __be16 ec_word; uint8_t ec_byte; __be64 ser_buf; ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1); if (ret) return ret; /* Theoretically there's a race here -- the battery could be removed immediately after we check whether it's present, and then we query for some other property of the now-absent battery. It doesn't matter though -- the EC will return the last-known information, and it's as if we just ran that _little_ bit faster and managed to read it out before the battery went away. */ if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) && psp != POWER_SUPPLY_PROP_PRESENT) return -ENODEV; switch (psp) { case POWER_SUPPLY_PROP_STATUS: ret = olpc_bat_get_status(val, ec_byte); if (ret) return ret; break; 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; case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)); break; case POWER_SUPPLY_PROP_HEALTH: if (ec_byte & BAT_STAT_DESTROY) val->intval = POWER_SUPPLY_HEALTH_DEAD; else { ret = olpc_bat_get_health(val); if (ret) return ret; } break; case POWER_SUPPLY_PROP_MANUFACTURER: ret = olpc_bat_get_mfr(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_TECHNOLOGY: ret = olpc_bat_get_tech(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_VOLTAGE_AVG: case POWER_SUPPLY_PROP_VOLTAGE_NOW: ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32; break; case POWER_SUPPLY_PROP_CURRENT_AVG: case POWER_SUPPLY_PROP_CURRENT_NOW: ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120; 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; 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; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: ret = olpc_bat_get_charge_full_design(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_CHARGE_NOW: ret = olpc_bat_get_charge_now(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_TEMP: ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256; break; case POWER_SUPPLY_PROP_TEMP_AMBIENT: ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 100 / 256; break; case POWER_SUPPLY_PROP_CHARGE_COUNTER: ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15; break; case POWER_SUPPLY_PROP_SERIAL_NUMBER: ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8); if (ret) return ret; sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf)); val->strval = bat_serial; break; default: ret = -EINVAL; break; } return ret; }
static int olpc_battery_probe(struct platform_device *pdev) { int ret; uint8_t status; /* * 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); 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 */ olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, NULL); if (IS_ERR(olpc_ac)) return PTR_ERR(olpc_ac); if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */ olpc_bat_desc.properties = olpc_xo15_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props); } else { /* XO-1 */ olpc_bat_desc.properties = olpc_xo1_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } olpc_bat = power_supply_register(&pdev->dev, &olpc_bat_desc, NULL); if (IS_ERR(olpc_bat)) { ret = PTR_ERR(olpc_bat); goto battery_failed; } ret = device_create_bin_file(&olpc_bat->dev, &olpc_bat_eeprom); if (ret) goto eeprom_failed; ret = device_create_file(&olpc_bat->dev, &olpc_bat_error); if (ret) goto error_failed; if (olpc_ec_wakeup_available()) { device_set_wakeup_capable(&olpc_ac->dev, true); device_set_wakeup_capable(&olpc_bat->dev, true); } return 0; error_failed: device_remove_bin_file(&olpc_bat->dev, &olpc_bat_eeprom); eeprom_failed: power_supply_unregister(olpc_bat); battery_failed: power_supply_unregister(olpc_ac); return ret; }
/********************************************************************* * Battery properties *********************************************************************/ static int olpc_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { int ret = 0; int16_t ec_word; uint8_t ec_byte; ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1); if (ret) return ret; /* Theoretically there's a race here -- the battery could be removed immediately after we check whether it's present, and then we query for some other property of the now-absent battery. It doesn't matter though -- the EC will return the last-known information, and it's as if we just ran that _little_ bit faster and managed to read it out before the battery went away. */ if (!(ec_byte & BAT_STAT_PRESENT) && psp != POWER_SUPPLY_PROP_PRESENT) return -ENODEV; switch (psp) { case POWER_SUPPLY_PROP_STATUS: if (olpc_platform_info.ecver > 0x44) { if (ec_byte & BAT_STAT_CHARGING) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (ec_byte & BAT_STAT_DISCHARGING) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (ec_byte & BAT_STAT_FULL) val->intval = POWER_SUPPLY_STATUS_FULL; else /* er,... */ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; } else { /* Older EC didn't report charge/discharge bits */ if (!(ec_byte & BAT_STAT_AC)) /* No AC means discharging */ val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (ec_byte & BAT_STAT_FULL) val->intval = POWER_SUPPLY_STATUS_FULL; else /* Not _necessarily_ true but EC doesn't tell all yet */ val->intval = POWER_SUPPLY_STATUS_CHARGING; break; } case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(ec_byte & BAT_STAT_PRESENT); break; case POWER_SUPPLY_PROP_HEALTH: if (ec_byte & BAT_STAT_DESTROY) val->intval = POWER_SUPPLY_HEALTH_DEAD; else { ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1); if (ret) return ret; switch (ec_byte) { case 0: val->intval = POWER_SUPPLY_HEALTH_GOOD; break; case BAT_ERR_OVERTEMP: val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; break; case BAT_ERR_OVERVOLTAGE: val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; break; case BAT_ERR_INFOFAIL: case BAT_ERR_OUT_OF_CONTROL: case BAT_ERR_ID_FAIL: case BAT_ERR_ACR_FAIL: val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; break; default: /* Eep. We don't know this failure code */ return -EIO; } } break; case POWER_SUPPLY_PROP_MANUFACTURER: ec_byte = BAT_ADDR_MFR_TYPE; ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); if (ret) return ret; switch (ec_byte >> 4) { case 1: val->strval = "Gold Peak"; break; case 2: val->strval = "BYD"; break; default: val->strval = "Unknown"; break; } break; case POWER_SUPPLY_PROP_TECHNOLOGY: ec_byte = BAT_ADDR_MFR_TYPE; ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1); if (ret) return ret; switch (ec_byte & 0xf) { case 1: val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH; break; case 2: val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe; break; default: val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; break; } break; case POWER_SUPPLY_PROP_VOLTAGE_AVG: ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; ec_word = be16_to_cpu(ec_word); val->intval = ec_word * 9760L / 32; break; case POWER_SUPPLY_PROP_CURRENT_AVG: ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; ec_word = be16_to_cpu(ec_word); val->intval = ec_word * 15625L / 120; 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; case POWER_SUPPLY_PROP_TEMP: ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; ec_word = be16_to_cpu(ec_word); val->intval = ec_word * 100 / 256; break; case POWER_SUPPLY_PROP_TEMP_AMBIENT: ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; ec_word = be16_to_cpu(ec_word); val->intval = ec_word * 100 / 256; break; default: ret = -EINVAL; break; } return ret; }
static void if_usb_reset_olpc_card(struct lbs_private *priv) { printk(KERN_CRIT "Resetting OLPC wireless via EC...\n"); olpc_ec_cmd(0x25, NULL, 0, NULL, 0); }
static int olpc_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { int ret = 0; __be16 ec_word; uint8_t ec_byte; __be64 ser_buf; ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1); if (ret) return ret; if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) && psp != POWER_SUPPLY_PROP_PRESENT) return -ENODEV; switch (psp) { case POWER_SUPPLY_PROP_STATUS: ret = olpc_bat_get_status(val, ec_byte); if (ret) return ret; break; 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; case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)); break; case POWER_SUPPLY_PROP_HEALTH: if (ec_byte & BAT_STAT_DESTROY) val->intval = POWER_SUPPLY_HEALTH_DEAD; else { ret = olpc_bat_get_health(val); if (ret) return ret; } break; case POWER_SUPPLY_PROP_MANUFACTURER: ret = olpc_bat_get_mfr(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_TECHNOLOGY: ret = olpc_bat_get_tech(val); if (ret) return ret; break; case POWER_SUPPLY_PROP_VOLTAGE_AVG: ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 9760L / 32; break; case POWER_SUPPLY_PROP_CURRENT_AVG: ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 15625L / 120; 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; 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; case POWER_SUPPLY_PROP_TEMP: ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 100 / 256; break; case POWER_SUPPLY_PROP_TEMP_AMBIENT: ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 100 / 256; break; case POWER_SUPPLY_PROP_CHARGE_COUNTER: ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; val->intval = (int)be16_to_cpu(ec_word) * 6250 / 15; break; case POWER_SUPPLY_PROP_SERIAL_NUMBER: ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8); if (ret) return ret; sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf)); val->strval = bat_serial; break; default: ret = -EINVAL; break; } return ret; }