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94be46b9e5
Driver did not provide default value for ramp delay for LDOs which lead to warning in dmesg, e.g. on Odroid XU4: [ 1.486076] vdd_ldo9: ramp_delay not set [ 1.506875] vddq_mmc2: ramp_delay not set [ 1.523766] vdd_ldo15: ramp_delay not set [ 1.544702] vdd_sd: ramp_delay not set The datasheet for all the S2MPS1x family is inconsistent here and does not specify unambiguously the value of ramp delay for LDO. It mentions 30 mV/us in one timing diagram but then omits it completely in LDO regulator characteristics table (it is specified for bucks). However the vendor kernels for Galaxy S5 and Odroid XU3 use values of 12 mV/us or 24 mV/us. Without the ramp delay value the consumers do not wait for voltage settle after changing it. Although the proper value of ramp delay for LDOs is unknown, it seems safer to use at least some value from reference kernel than to leave it unset. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
184 lines
4.3 KiB
C
184 lines
4.3 KiB
C
/*
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* core.h
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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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* 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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*/
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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_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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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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int ext_control_gpio;
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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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