| /* Copyright (c) 2015, 2019, The Linux Foundation. All rights reserved. |
| |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <bits.h> |
| #include <debug.h> |
| #include <pm8x41.h> |
| #include <pm8x41_hw.h> |
| #include <qpnp-smb2.h> |
| #include <qpnp-fg-gen3.h> |
| #include <qtimer.h> |
| #include <reboot.h> |
| #include <target.h> |
| |
| #define BATT_CHARGER_STATUS_1_REG 0x1006 |
| #define BATT_CHARGER_STATUS_2_REG 0x1007 |
| #define BATT_IF_INT_RT_STS 0x1210 |
| #define USBIN_PLUGIN_RT_STS_REG 0x1310 |
| |
| #define BATT_STATUS_MASK 0x07 |
| #define DISABLE_CHARGE 0x07 |
| |
| static bool is_battery_present(void) |
| { |
| uint8_t val = 0; |
| |
| val = REG_READ(BATT_IF_INT_RT_STS); |
| |
| /* |
| * If BATT_TERMINAL_MISSING_RT_STS BIT(5) or BATT_THERM_OR_ID_MISSING_RT_STS BIT(4) |
| * are set, battery is not present. |
| */ |
| if ((val & BIT(5)) | (val & BIT(4))) |
| return false; |
| |
| return true; |
| } |
| |
| static void dump_jeita_status(void) |
| { |
| uint8_t val = 0; |
| |
| val = REG_READ(BATT_CHARGER_STATUS_2_REG); |
| dprintf(INFO,"BATT_CHARGER_STATUS_2_REG value : %d\n",val); |
| } |
| |
| static bool is_usb_present(void) |
| { |
| uint8_t val = 0; |
| |
| val = REG_READ(USBIN_PLUGIN_RT_STS_REG); |
| |
| if (val & BIT(4)) |
| return true; |
| |
| return false; |
| } |
| |
| static bool is_battery_charging(void) |
| { |
| uint8_t val = 0; |
| |
| val = REG_READ(BATT_CHARGER_STATUS_1_REG); |
| dprintf(INFO,"BATT_CHARGER_STATUS_1_REG value : %d\n",val); |
| val = val & BATT_STATUS_MASK; |
| |
| if (val == DISABLE_CHARGE) |
| return false; |
| |
| return true; |
| } |
| |
| void weak_battery_charging(void) |
| { |
| uint32_t current_vbat = 0; |
| int batt_curr = 0; |
| |
| current_vbat = fg_gen3_get_battery_voltage(); |
| batt_curr = fg_gen3_get_battery_current(); |
| dprintf(INFO,"Entering LK charging loop: Battery current=%d mA voltage=%d mV\n", |
| batt_curr,current_vbat); |
| |
| while (current_vbat < LK_BATT_VOLT_THRESHOLD) |
| { |
| if (!is_battery_present()) { |
| dprintf(CRITICAL, "Battery is not present.Exiting weak battery charging\n"); |
| break; |
| } |
| |
| if (!is_usb_present()) { |
| dprintf(CRITICAL, "Shutting down because USB is not present\n"); |
| shutdown_device(); |
| } |
| |
| if (!is_battery_charging()) { |
| dump_jeita_status(); |
| dprintf(CRITICAL, "Shutting down because battery is not charging\n"); |
| shutdown_device(); |
| } |
| |
| current_vbat = fg_gen3_get_battery_voltage(); |
| batt_curr = fg_gen3_get_battery_current(); |
| dprintf(INFO, "Battery Charging: current=%d mA voltage=%d mV\n", |
| batt_curr,current_vbat); |
| mdelay(1000); |
| } |
| |
| dprintf(INFO,"Battery Charging is completed Booting to HLOS\n"); |
| } |