Support for MAX17042 fuel-gauge (FG), which is built into the MAX8997 power management device. Special file - fg_battery_cell_params.h with cells characteristics added. The FG device will work with redesigned PMIC framework. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Stefano Babic <sbabic@denx.de>master
Łukasz Majewski
12 years ago
committed by
Anatolij Gustschin
parent
294a97da34
commit
b95aacd332
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#
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# Copyright (C) 2012 Samsung Electronics
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# Lukasz Majewski <l.majewski@samsung.com>
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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include $(TOPDIR)/config.mk |
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LIB := $(obj)libfuel_gauge.o
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COBJS-$(CONFIG_POWER_FG_MAX17042) += fg_max17042.o
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COBJS := $(COBJS-y)
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SRCS := $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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all: $(LIB) |
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$(LIB): $(obj).depend $(OBJS) |
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$(call cmd_link_o_target, $(OBJS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk |
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sinclude $(obj).depend |
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########################################################################
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@ -0,0 +1,250 @@ |
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/*
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* Copyright (C) 2012 Samsung Electronics |
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* Lukasz Majewski <l.majewski@samsung.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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#include <power/pmic.h> |
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#include <power/max17042_fg.h> |
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#include <i2c.h> |
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#include <power/max8997_pmic.h> |
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#include <power/power_chrg.h> |
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#include <power/battery.h> |
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#include <power/fg_battery_cell_params.h> |
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#include <errno.h> |
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static int fg_write_regs(struct pmic *p, u8 addr, u16 *data, int num) |
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{ |
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int ret = 0; |
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int i; |
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for (i = 0; i < num; i++, addr++) |
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ret |= pmic_reg_write(p, addr, *(data + i)); |
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return ret; |
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} |
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static int fg_read_regs(struct pmic *p, u8 addr, u16 *data, int num) |
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{ |
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int ret = 0; |
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int i; |
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for (i = 0; i < num; i++, addr++) |
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ret |= pmic_reg_read(p, addr, (u32 *) (data + i)); |
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return ret; |
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} |
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static int fg_write_and_verify(struct pmic *p, u8 addr, u16 data) |
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{ |
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unsigned int val = data; |
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int ret = 0; |
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ret |= pmic_reg_write(p, addr, val); |
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ret |= pmic_reg_read(p, addr, &val); |
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if (ret) |
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return ret; |
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if (((u16) val) == data) |
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return 0; |
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return -1; |
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} |
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static void por_fuelgauge_init(struct pmic *p) |
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{ |
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u16 r_data0[16], r_data1[16], r_data2[16]; |
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u32 rewrite_count = 5, i = 0; |
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unsigned int val; |
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int ret = 0; |
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/* Delay 500 ms */ |
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mdelay(500); |
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/* Initilize Configuration */ |
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pmic_reg_write(p, MAX17042_CONFIG, 0x2310); |
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rewrite_model: |
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/* Unlock Model Access */ |
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pmic_reg_write(p, MAX17042_MLOCKReg1, MODEL_UNLOCK1); |
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pmic_reg_write(p, MAX17042_MLOCKReg2, MODEL_UNLOCK2); |
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/* Write/Read/Verify the Custom Model */ |
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ret |= fg_write_regs(p, MAX17042_MODEL1, cell_character0, |
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ARRAY_SIZE(cell_character0)); |
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ret |= fg_write_regs(p, MAX17042_MODEL2, cell_character1, |
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ARRAY_SIZE(cell_character1)); |
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ret |= fg_write_regs(p, MAX17042_MODEL3, cell_character2, |
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ARRAY_SIZE(cell_character2)); |
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if (ret) { |
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printf("%s: Cell parameters write failed!\n", __func__); |
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return; |
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} |
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ret |= fg_read_regs(p, MAX17042_MODEL1, r_data0, ARRAY_SIZE(r_data0)); |
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ret |= fg_read_regs(p, MAX17042_MODEL2, r_data1, ARRAY_SIZE(r_data1)); |
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ret |= fg_read_regs(p, MAX17042_MODEL3, r_data2, ARRAY_SIZE(r_data2)); |
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if (ret) |
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printf("%s: Cell parameters read failed!\n", __func__); |
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for (i = 0; i < 16; i++) { |
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if ((cell_character0[i] != r_data0[i]) |
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|| (cell_character1[i] != r_data1[i]) |
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|| (cell_character2[i] != r_data2[i])) |
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goto rewrite_model; |
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} |
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/* Lock model access */ |
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pmic_reg_write(p, MAX17042_MLOCKReg1, MODEL_LOCK1); |
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pmic_reg_write(p, MAX17042_MLOCKReg2, MODEL_LOCK2); |
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/* Verify the model access is locked */ |
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ret |= fg_read_regs(p, MAX17042_MODEL1, r_data0, ARRAY_SIZE(r_data0)); |
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ret |= fg_read_regs(p, MAX17042_MODEL2, r_data1, ARRAY_SIZE(r_data1)); |
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ret |= fg_read_regs(p, MAX17042_MODEL3, r_data2, ARRAY_SIZE(r_data2)); |
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if (ret) { |
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printf("%s: Cell parameters read failed!\n", __func__); |
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return; |
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} |
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for (i = 0; i < ARRAY_SIZE(r_data0); i++) { |
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/* Check if model locked */ |
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if (r_data0[i] || r_data1[i] || r_data2[i]) { |
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/* Rewrite model data - prevent from endless loop */ |
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if (rewrite_count--) { |
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puts("FG - Lock model access failed!\n"); |
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goto rewrite_model; |
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} |
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} |
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} |
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/* Write Custom Parameters */ |
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fg_write_and_verify(p, MAX17042_RCOMP0, RCOMP0); |
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fg_write_and_verify(p, MAX17042_TEMPCO, TempCo); |
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/* Delay at least 350mS */ |
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mdelay(350); |
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/* Initialization Complete */ |
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pmic_reg_read(p, MAX17042_STATUS, &val); |
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/* Write and Verify Status with POR bit Cleared */ |
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fg_write_and_verify(p, MAX17042_STATUS, val & ~MAX17042_POR); |
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/* Delay at least 350 ms */ |
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mdelay(350); |
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} |
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static int power_update_battery(struct pmic *p, struct pmic *bat) |
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{ |
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struct power_battery *pb = bat->pbat; |
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unsigned int val; |
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int ret = 0; |
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if (pmic_probe(p)) { |
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puts("Can't find max17042 fuel gauge\n"); |
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return -1; |
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} |
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ret |= pmic_reg_read(p, MAX17042_VFSOC, &val); |
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pb->bat->state_of_chrg = (val >> 8); |
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pmic_reg_read(p, MAX17042_VCELL, &val); |
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debug("vfsoc: 0x%x\n", val); |
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pb->bat->voltage_uV = ((val & 0xFFUL) >> 3) + ((val & 0xFF00) >> 3); |
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pb->bat->voltage_uV = (pb->bat->voltage_uV * 625); |
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pmic_reg_read(p, 0x05, &val); |
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pb->bat->capacity = val >> 2; |
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return ret; |
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} |
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static int power_check_battery(struct pmic *p, struct pmic *bat) |
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{ |
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struct power_battery *pb = bat->pbat; |
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unsigned int val; |
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int ret = 0; |
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if (pmic_probe(p)) { |
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puts("Can't find max17042 fuel gauge\n"); |
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return -1; |
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} |
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ret |= pmic_reg_read(p, MAX17042_STATUS, &val); |
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debug("fg status: 0x%x\n", val); |
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if (val == MAX17042_POR) |
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por_fuelgauge_init(p); |
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ret |= pmic_reg_read(p, MAX17042_VERSION, &val); |
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pb->bat->version = val; |
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power_update_battery(p, bat); |
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debug("fg ver: 0x%x\n", pb->bat->version); |
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printf("BAT: state_of_charge(SOC):%d%%\n", |
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pb->bat->state_of_chrg); |
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printf(" voltage: %d.%6.6d [V] (expected to be %d [mAh])\n", |
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pb->bat->voltage_uV / 1000000, |
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pb->bat->voltage_uV % 1000000, |
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pb->bat->capacity); |
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if (pb->bat->voltage_uV > 3850000) |
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pb->bat->state = EXT_SOURCE; |
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else if (pb->bat->voltage_uV < 3600000 || pb->bat->state_of_chrg < 5) |
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pb->bat->state = CHARGE; |
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else |
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pb->bat->state = NORMAL; |
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return ret; |
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} |
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static struct power_fg power_fg_ops = { |
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.fg_battery_check = power_check_battery, |
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.fg_battery_update = power_update_battery, |
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}; |
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int power_fg_init(unsigned char bus) |
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{ |
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static const char name[] = "MAX17042_FG"; |
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struct pmic *p = pmic_alloc(); |
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if (!p) { |
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printf("%s: POWER allocation error!\n", __func__); |
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return -ENOMEM; |
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} |
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debug("Board Fuel Gauge init\n"); |
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p->name = name; |
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p->interface = PMIC_I2C; |
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p->number_of_regs = FG_NUM_OF_REGS; |
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p->hw.i2c.addr = MAX17042_I2C_ADDR; |
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p->hw.i2c.tx_num = 2; |
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p->sensor_byte_order = PMIC_SENSOR_BYTE_ORDER_BIG; |
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p->bus = bus; |
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p->fg = &power_fg_ops; |
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return 0; |
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} |
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@ -0,0 +1,90 @@ |
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/*
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* Copyright (C) 2012 Samsung Electronics |
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* Lukasz Majewski <l.majewski@samsung.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#ifndef __FG_BATTERY_CELL_PARAMS_H_ |
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#define __FG_BATTERY_CELL_PARAMS_H_ |
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#if defined(CONFIG_POWER_FG_MAX17042) && defined(CONFIG_TRATS) |
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/* Cell characteristics - Exynos4 TRATS development board */ |
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/* Shall be written to addr 0x80h */ |
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u16 cell_character0[16] = { |
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0xA2A0, |
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0xB6E0, |
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0xB850, |
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0xBAD0, |
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0xBB20, |
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0xBB70, |
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0xBBC0, |
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0xBC20, |
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0xBC80, |
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0xBCE0, |
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0xBD80, |
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0xBE20, |
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0xC090, |
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0xC420, |
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0xC910, |
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0xD070 |
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}; |
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/* Shall be written to addr 0x90h */ |
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u16 cell_character1[16] = { |
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0x0090, |
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0x1A50, |
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0x02F0, |
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0x2060, |
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0x2060, |
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0x2E60, |
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0x26A0, |
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0x2DB0, |
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0x2DB0, |
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0x1870, |
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0x2A20, |
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0x16F0, |
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0x08F0, |
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0x0D40, |
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0x08C0, |
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0x08C0 |
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}; |
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/* Shall be written to addr 0xA0h */ |
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u16 cell_character2[16] = { |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100, |
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0x0100 |
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}; |
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#endif |
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#endif /* __FG_BATTERY_CELL_PARAMS_H_ */ |
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@ -0,0 +1,74 @@ |
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/*
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* Copyright (C) 2012 Samsung Electronics |
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* Lukasz Majewski <l.majewski@samsung.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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|
* This program is free software; you can redistribute it and/or |
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|
* modify it under the terms of the GNU General Public License as |
||||||
|
* published by the Free Software Foundation; either version 2 of |
||||||
|
* the License, or (at your option) any later version. |
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|
* |
||||||
|
* This program is distributed in the hope that it will be useful, |
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||||
|
* GNU General Public License for more details. |
||||||
|
* |
||||||
|
* You should have received a copy of the GNU General Public License |
||||||
|
* along with this program; if not, write to the Free Software |
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|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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|
* MA 02111-1307 USA |
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*/ |
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#ifndef __MAX17042_FG_H_ |
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#define __MAX17042_FG_H_ |
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/* MAX 17042 registers */ |
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enum { |
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MAX17042_STATUS = 0x00, |
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MAX17042_SOCREP = 0x06, |
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MAX17042_VCELL = 0x09, |
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MAX17042_CURRENT = 0x0A, |
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MAX17042_AVG_CURRENT = 0x0B, |
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MAX17042_SOCMIX = 0x0D, |
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MAX17042_SOCAV = 0x0E, |
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MAX17042_DESIGN_CAP = 0x18, |
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MAX17042_AVG_VCELL = 0x19, |
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MAX17042_CONFIG = 0x1D, |
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MAX17042_VERSION = 0x21, |
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MAX17042_LEARNCFG = 0x28, |
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MAX17042_FILTERCFG = 0x29, |
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MAX17042_RELAXCFG = 0x2A, |
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MAX17042_MISCCFG = 0x2B, |
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MAX17042_CGAIN = 0x2E, |
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MAX17042_COFF = 0x2F, |
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MAX17042_RCOMP0 = 0x38, |
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MAX17042_TEMPCO = 0x39, |
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MAX17042_FSTAT = 0x3D, |
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MAX17042_MLOCKReg1 = 0x62, |
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MAX17042_MLOCKReg2 = 0x63, |
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MAX17042_MODEL1 = 0x80, |
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MAX17042_MODEL2 = 0x90, |
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MAX17042_MODEL3 = 0xA0, |
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MAX17042_VFOCV = 0xFB, |
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MAX17042_VFSOC = 0xFF, |
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FG_NUM_OF_REGS = 0x100, |
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}; |
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#define RCOMP0 0x0060 |
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#define TempCo 0x1015 |
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#define MAX17042_POR (1 << 1) |
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#define MODEL_UNLOCK1 0x0059 |
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#define MODEL_UNLOCK2 0x00c4 |
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#define MODEL_LOCK1 0x0000 |
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#define MODEL_LOCK2 0x0000 |
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|
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#define MAX17042_I2C_ADDR (0x6C >> 1) |
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|
|
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|
int power_fg_init(unsigned char bus); |
||||||
|
#endif /* __MAX17042_FG_H_ */ |
||||||
Loading…
Reference in new issue