drivers/power/pmic: Add tps65217 driver
Add a driver for the TPS65217 PMIC that is found in the Beaglebone family of boards. Signed-off-by: Greg Guyotte <gguyotte@ti.com> [trini: Split and rework Greg's changes into new drivers/power framework] Signed-off-by: Tom Rini <trini@ti.com>utp
Greg Guyotte
Tom Rini
parent
fd070d811d
commit
8b65b12a04
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@ -13,6 +13,7 @@ COBJS-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
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COBJS-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
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COBJS-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
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COBJS-$(CONFIG_POWER_MAX77686) += pmic_max77686.o
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COBJS-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
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COBJS := $(COBJS-y)
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SRCS := $(COBJS:.o=.c)
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@ -0,0 +1,109 @@
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/*
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* (C) Copyright 2011-2013
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* Texas Instruments, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <power/tps65217.h>
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/**
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* tps65217_reg_read() - Generic function that can read a TPS65217 register
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* @src_reg: Source register address
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* @src_val: Address of destination variable
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* @return: 0 for success, not 0 on failure.
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*/
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int tps65217_reg_read(uchar src_reg, uchar *src_val)
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{
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return i2c_read(TPS65217_CHIP_PM, src_reg, 1, src_val, 1);
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}
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/**
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* tps65217_reg_write() - Generic function that can write a TPS65217 PMIC
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* register or bit field regardless of protection
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* level.
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*
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* @prot_level: Register password protection. Use
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* TPS65217_PROT_LEVEL_NONE,
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* TPS65217_PROT_LEVEL_1 or TPS65217_PROT_LEVEL_2
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* @dest_reg: Register address to write.
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* @dest_val: Value to write.
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* @mask: Bit mask (8 bits) to be applied. Function will only
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* change bits that are set in the bit mask.
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*
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* @return: 0 for success, not 0 on failure, as per the i2c API
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*/
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int tps65217_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
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uchar mask)
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{
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uchar read_val;
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uchar xor_reg;
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int ret;
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/*
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* If we are affecting only a bit field, read dest_reg and apply the
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* mask
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*/
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if (mask != TPS65217_MASK_ALL_BITS) {
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ret = i2c_read(TPS65217_CHIP_PM, dest_reg, 1, &read_val, 1);
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if (ret)
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return ret;
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read_val &= (~mask);
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read_val |= (dest_val & mask);
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dest_val = read_val;
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}
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if (prot_level > 0) {
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xor_reg = dest_reg ^ TPS65217_PASSWORD_UNLOCK;
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ret = i2c_write(TPS65217_CHIP_PM, TPS65217_PASSWORD, 1,
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&xor_reg, 1);
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if (ret)
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return ret;
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}
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ret = i2c_write(TPS65217_CHIP_PM, dest_reg, 1, &dest_val, 1);
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if (ret)
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return ret;
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if (prot_level == TPS65217_PROT_LEVEL_2) {
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ret = i2c_write(TPS65217_CHIP_PM, TPS65217_PASSWORD, 1,
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&xor_reg, 1);
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if (ret)
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return ret;
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ret = i2c_write(TPS65217_CHIP_PM, dest_reg, 1, &dest_val, 1);
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if (ret)
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return ret;
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}
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return 0;
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}
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/**
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* tps65217_voltage_update() - Function to change a voltage level, as this
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* is a multi-step process.
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* @dc_cntrl_reg: DC voltage control register to change.
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* @volt_sel: New value for the voltage register
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* @return: 0 for success, not 0 on failure.
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*/
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int tps65217_voltage_update(uchar dc_cntrl_reg, uchar volt_sel)
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{
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if ((dc_cntrl_reg != TPS65217_DEFDCDC1) &&
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(dc_cntrl_reg != TPS65217_DEFDCDC2) &&
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(dc_cntrl_reg != TPS65217_DEFDCDC3))
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return 1;
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/* set voltage level */
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if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, dc_cntrl_reg, volt_sel,
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TPS65217_MASK_ALL_BITS))
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return 1;
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/* set GO bit to initiate voltage transition */
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if (tps65217_reg_write(TPS65217_PROT_LEVEL_2, TPS65217_DEFSLEW,
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TPS65217_DCDC_GO, TPS65217_DCDC_GO))
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return 1;
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return 0;
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}
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@ -0,0 +1,82 @@
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/*
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* (C) Copyright 2011-2013
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* Texas Instruments, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* For more details, please see the TRM at http://www.ti.com/product/tps65217a
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*/
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#ifndef __POWER_TPS65217_H__
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#define __POWER_TPS65217_H__
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/* I2C chip address */
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#define TPS65217_CHIP_PM 0x24
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/* Registers */
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enum {
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TPS65217_CHIPID = 0x00,
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TPS65217_POWER_PATH,
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TPS65217_INTERRUPT,
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TPS65217_CHGCONFIG0,
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TPS65217_CHGCONFIG1,
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TPS65217_CHGCONFIG2,
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TPS65217_CHGCONFIG3,
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TPS65217_WLEDCTRL1,
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TPS65217_WLEDCTRL2,
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TPS65217_MUXCTRL,
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TPS65217_STATUS,
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TPS65217_PASSWORD,
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TPS65217_PGOOD,
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TPS65217_DEFPG,
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TPS65217_DEFDCDC1,
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TPS65217_DEFDCDC2,
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TPS65217_DEFDCDC3,
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TPS65217_DEFSLEW,
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TPS65217_DEFLDO1,
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TPS65217_DEFLDO2,
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TPS65217_DEFLS1,
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TPS65217_DEFLS2,
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TPS65217_ENABLE,
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TPS65217_DEFUVLO,
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TPS65217_SEQ1,
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TPS65217_SEQ2,
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TPS65217_SEQ3,
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TPS65217_SEQ4,
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TPS65217_SEQ5,
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TPS65217_SEQ6,
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TPS65217_PMIC_NUM_OF_REGS,
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};
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#define TPS65217_PROT_LEVEL_NONE 0x00
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#define TPS65217_PROT_LEVEL_1 0x01
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#define TPS65217_PROT_LEVEL_2 0x02
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#define TPS65217_PASSWORD_LOCK_FOR_WRITE 0x00
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#define TPS65217_PASSWORD_UNLOCK 0x7D
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#define TPS65217_DCDC_GO 0x80
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#define TPS65217_MASK_ALL_BITS 0xFF
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#define TPS65217_USB_INPUT_CUR_LIMIT_MASK 0x03
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#define TPS65217_USB_INPUT_CUR_LIMIT_100MA 0x00
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#define TPS65217_USB_INPUT_CUR_LIMIT_500MA 0x01
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#define TPS65217_USB_INPUT_CUR_LIMIT_1300MA 0x02
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#define TPS65217_USB_INPUT_CUR_LIMIT_1800MA 0x03
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#define TPS65217_DCDC_VOLT_SEL_1275MV 0x0F
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#define TPS65217_DCDC_VOLT_SEL_1325MV 0x11
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#define TPS65217_LDO_MASK 0x1F
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#define TPS65217_LDO_VOLTAGE_OUT_1_8 0x06
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#define TPS65217_LDO_VOLTAGE_OUT_3_3 0x1F
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#define TPS65217_PWR_SRC_USB_BITMASK 0x4
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#define TPS65217_PWR_SRC_AC_BITMASK 0x8
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int tps65217_reg_read(uchar src_reg, uchar *src_val);
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int tps65217_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
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uchar mask);
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int tps65217_voltage_update(uchar dc_cntrl_reg, uchar volt_sel);
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#endif /* __POWER_TPS65217_H__ */
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