97f53d710b
Add support for external control over GPIO for LDO10, LDO11 and LDO12 S2MPS14 regulators. External control can be turned on by writing 0x0 to control register which in case of other regulators is used for disabling them. These LDO10-LDO12 regulators can be disabled only by I2C GPIO or PWREN pin so the patch actually allows proper way of disabling them. Additionally the GPIO control has two benefits: - It is faster than toggling it over I2C bus. - It allows disabling the regulator during suspend to RAM; The AP will enable it during resume. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
156 lines
3.8 KiB
C
156 lines
3.8 KiB
C
/*
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* s2mps14.h
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*
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* Copyright (c) 2014 Samsung Electronics Co., Ltd
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* http://www.samsung.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* 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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*/
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#ifndef __LINUX_MFD_S2MPS14_H
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#define __LINUX_MFD_S2MPS14_H
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/* S2MPS14 registers */
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enum s2mps14_reg {
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S2MPS14_REG_ID,
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S2MPS14_REG_INT1,
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S2MPS14_REG_INT2,
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S2MPS14_REG_INT3,
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S2MPS14_REG_INT1M,
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S2MPS14_REG_INT2M,
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S2MPS14_REG_INT3M,
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S2MPS14_REG_ST1,
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S2MPS14_REG_ST2,
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S2MPS14_REG_PWRONSRC,
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S2MPS14_REG_OFFSRC,
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S2MPS14_REG_BU_CHG,
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S2MPS14_REG_RTCCTRL,
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S2MPS14_REG_CTRL1,
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S2MPS14_REG_CTRL2,
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S2MPS14_REG_RSVD1,
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S2MPS14_REG_RSVD2,
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S2MPS14_REG_RSVD3,
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S2MPS14_REG_RSVD4,
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S2MPS14_REG_RSVD5,
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S2MPS14_REG_RSVD6,
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S2MPS14_REG_CTRL3,
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S2MPS14_REG_RSVD7,
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S2MPS14_REG_RSVD8,
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S2MPS14_REG_WRSTBI,
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S2MPS14_REG_B1CTRL1,
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S2MPS14_REG_B1CTRL2,
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S2MPS14_REG_B2CTRL1,
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S2MPS14_REG_B2CTRL2,
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S2MPS14_REG_B3CTRL1,
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S2MPS14_REG_B3CTRL2,
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S2MPS14_REG_B4CTRL1,
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S2MPS14_REG_B4CTRL2,
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S2MPS14_REG_B5CTRL1,
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S2MPS14_REG_B5CTRL2,
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S2MPS14_REG_L1CTRL,
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S2MPS14_REG_L2CTRL,
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S2MPS14_REG_L3CTRL,
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S2MPS14_REG_L4CTRL,
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S2MPS14_REG_L5CTRL,
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S2MPS14_REG_L6CTRL,
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S2MPS14_REG_L7CTRL,
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S2MPS14_REG_L8CTRL,
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S2MPS14_REG_L9CTRL,
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S2MPS14_REG_L10CTRL,
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S2MPS14_REG_L11CTRL,
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S2MPS14_REG_L12CTRL,
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S2MPS14_REG_L13CTRL,
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S2MPS14_REG_L14CTRL,
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S2MPS14_REG_L15CTRL,
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S2MPS14_REG_L16CTRL,
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S2MPS14_REG_L17CTRL,
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S2MPS14_REG_L18CTRL,
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S2MPS14_REG_L19CTRL,
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S2MPS14_REG_L20CTRL,
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S2MPS14_REG_L21CTRL,
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S2MPS14_REG_L22CTRL,
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S2MPS14_REG_L23CTRL,
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S2MPS14_REG_L24CTRL,
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S2MPS14_REG_L25CTRL,
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S2MPS14_REG_LDODSCH1,
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S2MPS14_REG_LDODSCH2,
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S2MPS14_REG_LDODSCH3,
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};
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/* S2MPS14 regulator ids */
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enum s2mps14_regulators {
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S2MPS14_LDO1,
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S2MPS14_LDO2,
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S2MPS14_LDO3,
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S2MPS14_LDO4,
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S2MPS14_LDO5,
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S2MPS14_LDO6,
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S2MPS14_LDO7,
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S2MPS14_LDO8,
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S2MPS14_LDO9,
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S2MPS14_LDO10,
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S2MPS14_LDO11,
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S2MPS14_LDO12,
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S2MPS14_LDO13,
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S2MPS14_LDO14,
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S2MPS14_LDO15,
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S2MPS14_LDO16,
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S2MPS14_LDO17,
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S2MPS14_LDO18,
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S2MPS14_LDO19,
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S2MPS14_LDO20,
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S2MPS14_LDO21,
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S2MPS14_LDO22,
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S2MPS14_LDO23,
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S2MPS14_LDO24,
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S2MPS14_LDO25,
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S2MPS14_BUCK1,
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S2MPS14_BUCK2,
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S2MPS14_BUCK3,
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S2MPS14_BUCK4,
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S2MPS14_BUCK5,
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S2MPS14_REGULATOR_MAX,
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};
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/* Regulator constraints for BUCKx */
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#define S2MPS14_BUCK1235_MIN_600MV 600000
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#define S2MPS14_BUCK4_MIN_1400MV 1400000
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#define S2MPS14_BUCK1235_STEP_6_25MV 6250
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#define S2MPS14_BUCK4_STEP_12_5MV 12500
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#define S2MPS14_BUCK1235_START_SEL 0x20
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#define S2MPS14_BUCK4_START_SEL 0x40
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/*
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* Default ramp delay in uv/us. Datasheet says that ramp delay can be
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* controlled however it does not specify which register is used for that.
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* Let's assume that default value will be set.
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*/
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#define S2MPS14_BUCK_RAMP_DELAY 12500
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/* Regulator constraints for different types of LDOx */
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#define S2MPS14_LDO_MIN_800MV 800000
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#define S2MPS14_LDO_MIN_1800MV 1800000
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#define S2MPS14_LDO_STEP_12_5MV 12500
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#define S2MPS14_LDO_STEP_25MV 25000
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#define S2MPS14_LDO_VSEL_MASK 0x3F
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#define S2MPS14_BUCK_VSEL_MASK 0xFF
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#define S2MPS14_ENABLE_MASK (0x03 << S2MPS14_ENABLE_SHIFT)
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#define S2MPS14_ENABLE_SHIFT 6
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/* On/Off controlled by PWREN */
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#define S2MPS14_ENABLE_SUSPEND (0x01 << S2MPS14_ENABLE_SHIFT)
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/* On/Off controlled by LDO10EN or EMMCEN */
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#define S2MPS14_ENABLE_EXT_CONTROL (0x00 << S2MPS14_ENABLE_SHIFT)
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#define S2MPS14_LDO_N_VOLTAGES (S2MPS14_LDO_VSEL_MASK + 1)
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#define S2MPS14_BUCK_N_VOLTAGES (S2MPS14_BUCK_VSEL_MASK + 1)
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#endif /* __LINUX_MFD_S2MPS14_H */
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