543 lines
15 KiB
C
Executable File
543 lines
15 KiB
C
Executable File
/*
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* s2mu106_pmeter.c - S2MU106 Power Meter Driver
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*
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* Copyright (C) 2016 Samsung Electronics Co.Ltd
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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
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* as published by the Free Software Foundation; either version 2
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* of 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "include/s2mu106_pmeter.h"
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#define VOLTAGE_9V 8000
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#define VOLTAGE_6P9V 6900
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#define VOLTAGE_5V 6000
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static enum power_supply_property s2mu106_pmeter_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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static const unsigned char enable_bit_data[PM_TYPE_MAX] =
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{0x80, 0x40, 0x20, 0x01, 0x08, 0x04, 0x02, 0x80,
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0x40, 0x01, 0x10, 0x80};
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static int s2mu106_pm_enable(struct s2mu106_pmeter_data *pmeter,
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int mode, enum pm_type type)
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{
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u8 addr1 = S2MU106_PM_REQ_BOX_CO1;
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u8 addr2 = S2MU106_PM_REQ_BOX_CO2;
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u8 data1, data2;
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/* Default PM mode = continuous */
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if (mode == REQUEST_RESPONSE_MODE) {
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pr_info ("%s PM mode : Request Response mode (RR)\n", __func__);
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addr1 = S2MU106_PM_REQ_BOX_RR1;
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addr2 = S2MU106_PM_REQ_BOX_RR2;
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}
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s2mu106_read_reg(pmeter->i2c, addr1, &data1);
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s2mu106_read_reg(pmeter->i2c, addr2, &data2);
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switch (type) {
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case PM_TYPE_VCHGIN ... PM_TYPE_VGPADC:
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case PM_TYPE_VCC2:
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data1 |= enable_bit_data[type];
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break;
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case PM_TYPE_ICHGIN:
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case PM_TYPE_IWCIN:
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case PM_TYPE_IOTG:
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case PM_TYPE_ITX:
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data2 |= enable_bit_data[type];
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break;
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default:
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return -EINVAL;
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}
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s2mu106_write_reg(pmeter->i2c, addr1, data1);
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s2mu106_write_reg(pmeter->i2c, addr2, data2);
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pr_info ("%s data1 : 0x%2x, data2 0x%2x\n", __func__, data1, data2);
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return 0;
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}
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static void s2mu106_pm_factory(struct s2mu106_pmeter_data *pmeter)
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{
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pr_info("%s, FACTORY Enter, Powermeter off\n", __func__);
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s2mu106_write_reg(pmeter->i2c, S2MU106_PM_CO_MASK1, 0xFF);
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s2mu106_write_reg(pmeter->i2c, S2MU106_PM_CO_MASK2, 0xFF);
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}
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static int s2mu106_pm_get_vchgin(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VCHGIN, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VCHGIN, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 5;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vwcin(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VWCIN, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VWCIN, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 5;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vbyp(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VBYP, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VBYP, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 5;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vsysa(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VSYS, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VSYS, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 25;
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charge_voltage = charge_voltage / 10;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vbata(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VBAT, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VBAT, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 25;
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charge_voltage = charge_voltage / 10;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vgpadc(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VGPADC, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VGPADC, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 25;
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charge_voltage = charge_voltage / 10;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vcc1(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VCC1, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VCC1, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 625;
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charge_voltage = charge_voltage / 1000;
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pr_debug("%s2, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_vcc2(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_voltage = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_VCC2, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_VCC2, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_voltage = ((data1 << 4) | (data2 >> 4)) * 625;
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charge_voltage = charge_voltage / 1000;
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, voltage = %d\n",
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__func__, data1, data2, charge_voltage);
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return charge_voltage;
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}
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static int s2mu106_pm_get_ichgin(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_current = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_ICHGIN, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_ICHGIN, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_current = (int)((data1 << 4) | (data2 >> 4));
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, current = %d\n",
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__func__, data1, data2, charge_current);
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return charge_current;
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}
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static int s2mu106_pm_get_iwcin(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_current = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_IWCIN, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_IWCIN, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_current = (int)((data1 << 4) | (data2 >> 4));
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, current = %d\n",
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__func__, data1, data2, charge_current);
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return charge_current;
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}
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static int s2mu106_pm_get_iotg(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_current = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_IOTG, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_IOTG, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_current = (int)((data1 << 4) | (data2 >> 4));
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, current = %d\n",
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__func__, data1, data2, charge_current);
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return charge_current;
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}
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static int s2mu106_pm_get_itx(struct s2mu106_pmeter_data *pmeter)
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{
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u8 data1, data2;
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int charge_current = 0, ret1 = 0, ret2 = 0;
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ret1 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL1_ITX, &data1);
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ret2 = s2mu106_read_reg(pmeter->i2c, S2MU106_PM_VAL2_ITX, &data2);
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if (ret1 < 0 || ret2 < 0)
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return -EINVAL;
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charge_current = (int)((data1 << 4) | (data2 >> 4));
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pr_debug("%s, data1 : 0x%2x, data2 : 0x%2x, current = %d\n",
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__func__, data1, data2, charge_current);
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return charge_current;
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}
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static int s2mu106_pm_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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{
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struct s2mu106_pmeter_data *pmeter = power_supply_get_drvdata(psy);
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switch (psp) {
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case POWER_SUPPLY_PROP_VCHGIN:
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val->intval = s2mu106_pm_get_vchgin(pmeter);
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break;
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case POWER_SUPPLY_PROP_VWCIN:
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val->intval = s2mu106_pm_get_vwcin(pmeter);
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break;
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case POWER_SUPPLY_PROP_VBYP:
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val->intval = s2mu106_pm_get_vbyp(pmeter);
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break;
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case POWER_SUPPLY_PROP_VSYS:
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val->intval = s2mu106_pm_get_vsysa(pmeter);
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break;
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case POWER_SUPPLY_PROP_VBAT:
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val->intval = s2mu106_pm_get_vbata(pmeter);
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break;
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case POWER_SUPPLY_PROP_VGPADC:
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val->intval = s2mu106_pm_get_vgpadc(pmeter);
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break;
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case POWER_SUPPLY_PROP_VCC1:
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val->intval = s2mu106_pm_get_vcc1(pmeter);
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break;
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case POWER_SUPPLY_PROP_VCC2:
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val->intval = s2mu106_pm_get_vcc2(pmeter);
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break;
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case POWER_SUPPLY_PROP_ICHGIN:
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val->intval = s2mu106_pm_get_ichgin(pmeter);
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break;
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case POWER_SUPPLY_PROP_IWCIN:
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val->intval = s2mu106_pm_get_iwcin(pmeter);
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break;
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case POWER_SUPPLY_PROP_IOTG:
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val->intval = s2mu106_pm_get_iotg(pmeter);
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break;
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case POWER_SUPPLY_PROP_ITX:
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val->intval = s2mu106_pm_get_itx(pmeter);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int s2mu106_pm_set_property(struct power_supply *psy,
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enum power_supply_property psp,
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const union power_supply_propval *val)
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{
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struct s2mu106_pmeter_data *pmeter = power_supply_get_drvdata(psy);
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switch (psp) {
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case POWER_SUPPLY_PROP_CO_ENABLE:
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, val->intval);
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break;
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case POWER_SUPPLY_PROP_RR_ENABLE:
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s2mu106_pm_enable(pmeter, REQUEST_RESPONSE_MODE, val->intval);
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break;
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case POWER_SUPPLY_PROP_PM_FACTORY:
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s2mu106_pm_factory(pmeter);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static irqreturn_t s2mu106_vchgin_isr(int irq, void *data)
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{
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struct s2mu106_pmeter_data *pmeter = data;
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int voltage;
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union power_supply_propval value;
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voltage = s2mu106_pm_get_vchgin(pmeter);
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value.intval = voltage;
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psy_do_property("muic-manager", set,
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POWER_SUPPLY_PROP_PM_VCHGIN, value);
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if (voltage >= VOLTAGE_9V) {
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value.intval = 1;
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psy_do_property("s2mu106-charger", set,
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POWER_SUPPLY_PROP_PM_VCHGIN, value);
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} else if (voltage >= VOLTAGE_6P9V) {
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value.intval = 2;
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psy_do_property("s2mu106-charger", set,
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POWER_SUPPLY_PROP_PM_VCHGIN, value);
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} else if (voltage <= VOLTAGE_5V) {
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value.intval = 0;
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psy_do_property("s2mu106-charger", set,
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POWER_SUPPLY_PROP_PM_VCHGIN, value);
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}
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return IRQ_HANDLED;
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}
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static const struct of_device_id s2mu106_pmeter_match_table[] = {
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{ .compatible = "samsung,s2mu106-pmeter",},
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{},
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};
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static void s2mu106_powermeter_initial(struct s2mu106_pmeter_data *pmeter)
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{
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_VCHGIN);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_VCC1);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_VCC2);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_VWCIN);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_IWCIN);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_ICHGIN);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_ITX);
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s2mu106_pm_enable(pmeter, CONTINUOUS_MODE, PM_TYPE_VSYS);
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/* VCHGIN diff interrupt 2560 mV */
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s2mu106_update_reg(pmeter->i2c, S2MU106_PM_HYST_LEVEL1,
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HYST_LEV_VCHGIN_2560mV << HYST_LEV_VCHGIN_SHIFT,
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HYST_LEV_VCHGIN_MASK);
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}
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static int s2mu106_pmeter_probe(struct platform_device *pdev)
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{
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struct s2mu106_dev *s2mu106 = dev_get_drvdata(pdev->dev.parent);
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struct s2mu106_pmeter_data *pmeter;
|
|
struct power_supply_config psy_cfg = {};
|
|
int ret = 0;
|
|
|
|
pr_info("%s:[BATT] S2MU106 Power meter driver probe\n", __func__);
|
|
pmeter = kzalloc(sizeof(struct s2mu106_pmeter_data), GFP_KERNEL);
|
|
if (!pmeter)
|
|
return -ENOMEM;
|
|
|
|
pmeter->dev = &pdev->dev;
|
|
pmeter->i2c = s2mu106->muic; // share the i2c slave address with MUIC
|
|
|
|
platform_set_drvdata(pdev, pmeter);
|
|
|
|
pmeter->psy_pm_desc.name = "s2mu106_pmeter"; //pmeter->pdata->powermeter_name;
|
|
pmeter->psy_pm_desc.type = POWER_SUPPLY_TYPE_UNKNOWN;
|
|
pmeter->psy_pm_desc.get_property = s2mu106_pm_get_property;
|
|
pmeter->psy_pm_desc.set_property = s2mu106_pm_set_property;
|
|
pmeter->psy_pm_desc.properties = s2mu106_pmeter_props;
|
|
pmeter->psy_pm_desc.num_properties = ARRAY_SIZE(s2mu106_pmeter_props);
|
|
|
|
psy_cfg.drv_data = pmeter;
|
|
|
|
pmeter->psy_pm = power_supply_register(&pdev->dev, &pmeter->psy_pm_desc, &psy_cfg);
|
|
if (IS_ERR(pmeter->psy_pm)) {
|
|
pr_err("%s: Failed to Register psy_chg\n", __func__);
|
|
ret = PTR_ERR(pmeter->psy_pm);
|
|
goto err_power_supply_register;
|
|
}
|
|
|
|
pmeter->irq_vchgin = s2mu106->pdata->irq_base + S2MU106_PM_IRQ1_VCHGINUP;
|
|
ret = request_threaded_irq(pmeter->irq_vchgin, NULL,
|
|
s2mu106_vchgin_isr, 0, "vchgin-irq", pmeter);
|
|
if (ret < 0) {
|
|
pr_err("%s: Fail to request SYS in IRQ: %d: %d\n",
|
|
__func__, pmeter->irq_vchgin, ret);
|
|
}
|
|
|
|
s2mu106_powermeter_initial(pmeter);
|
|
|
|
pr_info("%s:[BATT] S2MU106 pmeter driver loaded OK\n", __func__);
|
|
|
|
return ret;
|
|
|
|
err_power_supply_register:
|
|
mutex_destroy(&pmeter->pmeter_mutex);
|
|
kfree(pmeter);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int s2mu106_pmeter_remove(struct platform_device *pdev)
|
|
{
|
|
struct s2mu106_pmeter_data *pmeter =
|
|
platform_get_drvdata(pdev);
|
|
|
|
kfree(pmeter);
|
|
return 0;
|
|
}
|
|
|
|
#if defined CONFIG_PM
|
|
static int s2mu106_pmeter_suspend(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int s2mu106_pmeter_resume(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
#else
|
|
#define s2mu106_pmeter_suspend NULL
|
|
#define s2mu106_pmeter_resume NULL
|
|
#endif
|
|
|
|
static void s2mu106_pmeter_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct s2mu106_pmeter_data *pmeter = platform_get_drvdata(pdev);
|
|
pr_info("%s: S2MU106 PowerMeter driver shutdown\n", __func__);
|
|
s2mu106_write_reg(pmeter->i2c, S2MU106_PM_REQ_BOX_CO1, 0);
|
|
s2mu106_write_reg(pmeter->i2c, S2MU106_PM_REQ_BOX_CO2, 0);
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(s2mu106_pmeter_pm_ops, s2mu106_pmeter_suspend,
|
|
s2mu106_pmeter_resume);
|
|
|
|
static struct platform_driver s2mu106_pmeter_driver = {
|
|
.driver = {
|
|
.name = "s2mu106-powermeter",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = s2mu106_pmeter_match_table,
|
|
.pm = &s2mu106_pmeter_pm_ops,
|
|
},
|
|
.probe = s2mu106_pmeter_probe,
|
|
.remove = s2mu106_pmeter_remove,
|
|
.shutdown = s2mu106_pmeter_shutdown,
|
|
};
|
|
|
|
static int __init s2mu106_pmeter_init(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = platform_driver_register(&s2mu106_pmeter_driver);
|
|
|
|
return ret;
|
|
}
|
|
subsys_initcall(s2mu106_pmeter_init);
|
|
|
|
static void __exit s2mu106_pmeter_exit(void)
|
|
{
|
|
platform_driver_unregister(&s2mu106_pmeter_driver);
|
|
}
|
|
module_exit(s2mu106_pmeter_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Samsung Electronics");
|
|
MODULE_DESCRIPTION("PowerMeter driver for S2MU106");
|