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![Krzysztof Kozlowski](/assets/img/avatar_default.png)
The driver was registering buck regulators with unsupported range of voltages for S2MPS11 devices. Basically it assumed that all 256 values are possible for a single 8-bit I2C register controlling buck's voltage. This is not true, as datasheet describes subset of these which can be used. For example for buck[12346] the minimum voltage is 650 mV which corresponds to register value of 0x8. The driver was however registering regulator starting at 600 mV, so for a step of 6.25 mV this gave the same result. However this allowed to try to configure regulators to unsupported values. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
180 lines
4.1 KiB
C
180 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd
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* http://www.samsung.com
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*/
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#ifndef __LINUX_MFD_SEC_CORE_H
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#define __LINUX_MFD_SEC_CORE_H
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/* Macros to represent minimum voltages for LDO/BUCK */
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#define MIN_3000_MV 3000000
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#define MIN_2500_MV 2500000
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#define MIN_2000_MV 2000000
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#define MIN_1800_MV 1800000
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#define MIN_1500_MV 1500000
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#define MIN_1400_MV 1400000
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#define MIN_1000_MV 1000000
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#define MIN_900_MV 900000
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#define MIN_850_MV 850000
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#define MIN_800_MV 800000
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#define MIN_750_MV 750000
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#define MIN_650_MV 650000
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#define MIN_600_MV 600000
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#define MIN_500_MV 500000
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/* Ramp delay in uV/us */
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#define RAMP_DELAY_12_MVUS 12000
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/* Macros to represent steps for LDO/BUCK */
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#define STEP_50_MV 50000
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#define STEP_25_MV 25000
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#define STEP_12_5_MV 12500
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#define STEP_6_25_MV 6250
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struct gpio_desc;
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enum sec_device_type {
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S5M8751X,
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S5M8763X,
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S5M8767X,
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S2MPA01,
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S2MPS11X,
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S2MPS13X,
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S2MPS14X,
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S2MPS15X,
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S2MPU02,
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};
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/**
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* struct sec_pmic_dev - s2m/s5m master device for sub-drivers
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* @dev: Master device of the chip
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* @pdata: Platform data populated with data from DTS
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* or board files
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* @regmap_pmic: Regmap associated with PMIC's I2C address
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* @i2c: I2C client of the main driver
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* @device_type: Type of device, matches enum sec_device_type
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* @irq_base: Base IRQ number for device, required for IRQs
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* @irq: Generic IRQ number for device
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* @irq_data: Runtime data structure for IRQ controller
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* @wakeup: Whether or not this is a wakeup device
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*/
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struct sec_pmic_dev {
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struct device *dev;
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struct sec_platform_data *pdata;
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struct regmap *regmap_pmic;
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struct i2c_client *i2c;
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unsigned long device_type;
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int irq_base;
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int irq;
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struct regmap_irq_chip_data *irq_data;
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bool wakeup;
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};
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int sec_irq_init(struct sec_pmic_dev *sec_pmic);
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void sec_irq_exit(struct sec_pmic_dev *sec_pmic);
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int sec_irq_resume(struct sec_pmic_dev *sec_pmic);
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struct sec_platform_data {
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struct sec_regulator_data *regulators;
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struct sec_opmode_data *opmode;
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int device_type;
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int num_regulators;
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int irq_base;
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int (*cfg_pmic_irq)(void);
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bool wakeup;
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bool buck_voltage_lock;
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int buck_gpios[3];
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int buck_ds[3];
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unsigned int buck2_voltage[8];
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bool buck2_gpiodvs;
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unsigned int buck3_voltage[8];
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bool buck3_gpiodvs;
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unsigned int buck4_voltage[8];
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bool buck4_gpiodvs;
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int buck_set1;
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int buck_set2;
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int buck_set3;
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int buck2_enable;
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int buck3_enable;
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int buck4_enable;
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int buck_default_idx;
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int buck2_default_idx;
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int buck3_default_idx;
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int buck4_default_idx;
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int buck_ramp_delay;
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int buck2_ramp_delay;
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int buck34_ramp_delay;
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int buck5_ramp_delay;
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int buck16_ramp_delay;
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int buck7810_ramp_delay;
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int buck9_ramp_delay;
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int buck24_ramp_delay;
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int buck3_ramp_delay;
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int buck7_ramp_delay;
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int buck8910_ramp_delay;
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bool buck1_ramp_enable;
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bool buck2_ramp_enable;
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bool buck3_ramp_enable;
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bool buck4_ramp_enable;
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bool buck6_ramp_enable;
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int buck2_init;
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int buck3_init;
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int buck4_init;
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/* Whether or not manually set PWRHOLD to low during shutdown. */
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bool manual_poweroff;
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/* Disable the WRSTBI (buck voltage warm reset) when probing? */
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bool disable_wrstbi;
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};
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/**
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* sec_regulator_data - regulator data
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* @id: regulator id
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* @initdata: regulator init data (contraints, supplies, ...)
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*/
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struct sec_regulator_data {
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int id;
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struct regulator_init_data *initdata;
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struct device_node *reg_node;
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struct gpio_desc *ext_control_gpiod;
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};
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/*
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* sec_opmode_data - regulator operation mode data
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* @id: regulator id
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* @mode: regulator operation mode
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*/
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struct sec_opmode_data {
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int id;
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unsigned int mode;
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};
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/*
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* samsung regulator operation mode
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* SEC_OPMODE_OFF Regulator always OFF
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* SEC_OPMODE_ON Regulator always ON
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* SEC_OPMODE_LOWPOWER Regulator is on in low-power mode
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* SEC_OPMODE_SUSPEND Regulator is changed by PWREN pin
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* If PWREN is high, regulator is on
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* If PWREN is low, regulator is off
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*/
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enum sec_opmode {
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SEC_OPMODE_OFF,
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SEC_OPMODE_ON,
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SEC_OPMODE_LOWPOWER,
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SEC_OPMODE_SUSPEND,
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};
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#endif /* __LINUX_MFD_SEC_CORE_H */
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