1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* Copyright (C) 2018 ROHM Semiconductors */ 3 4 #ifndef __LINUX_MFD_ROHM_H__ 5 #define __LINUX_MFD_ROHM_H__ 6 7 #include <linux/regmap.h> 8 #include <linux/regulator/driver.h> 9 10 enum rohm_chip_type { 11 ROHM_CHIP_TYPE_BD9571, 12 ROHM_CHIP_TYPE_BD9573, 13 ROHM_CHIP_TYPE_BD9574, 14 ROHM_CHIP_TYPE_BD9576, 15 ROHM_CHIP_TYPE_BD71815, 16 ROHM_CHIP_TYPE_BD71828, 17 ROHM_CHIP_TYPE_BD71837, 18 ROHM_CHIP_TYPE_BD71847, 19 ROHM_CHIP_TYPE_AMOUNT 20 }; 21 22 struct rohm_regmap_dev { 23 struct device *dev; 24 struct regmap *regmap; 25 }; 26 27 #define ROHM_DVS_LEVEL_RUN BIT(0) 28 #define ROHM_DVS_LEVEL_IDLE BIT(1) 29 #define ROHM_DVS_LEVEL_SUSPEND BIT(2) 30 #define ROHM_DVS_LEVEL_LPSR BIT(3) 31 #define ROHM_DVS_LEVEL_SNVS BIT(4) 32 #define ROHM_DVS_LEVEL_VALID_AMOUNT 5 33 #define ROHM_DVS_LEVEL_UNKNOWN 0 34 35 /** 36 * struct rohm_dvs_config - dynamic voltage scaling register descriptions 37 * 38 * @level_map: bitmap representing supported run-levels for this 39 * regulator 40 * @run_reg: register address for regulator config at 'run' state 41 * @run_mask: value mask for regulator voltages at 'run' state 42 * @run_on_mask: enable mask for regulator at 'run' state 43 * @idle_reg: register address for regulator config at 'idle' state 44 * @idle_mask: value mask for regulator voltages at 'idle' state 45 * @idle_on_mask: enable mask for regulator at 'idle' state 46 * @suspend_reg: register address for regulator config at 'suspend' state 47 * @suspend_mask: value mask for regulator voltages at 'suspend' state 48 * @suspend_on_mask: enable mask for regulator at 'suspend' state 49 * @lpsr_reg: register address for regulator config at 'lpsr' state 50 * @lpsr_mask: value mask for regulator voltages at 'lpsr' state 51 * @lpsr_on_mask: enable mask for regulator at 'lpsr' state 52 * 53 * Description of ROHM PMICs voltage configuration registers for different 54 * system states. This is used to correctly configure the PMIC at startup 55 * based on values read from DT. 56 */ 57 struct rohm_dvs_config { 58 uint64_t level_map; 59 unsigned int run_reg; 60 unsigned int run_mask; 61 unsigned int run_on_mask; 62 unsigned int idle_reg; 63 unsigned int idle_mask; 64 unsigned int idle_on_mask; 65 unsigned int suspend_reg; 66 unsigned int suspend_mask; 67 unsigned int suspend_on_mask; 68 unsigned int lpsr_reg; 69 unsigned int lpsr_mask; 70 unsigned int lpsr_on_mask; 71 unsigned int snvs_reg; 72 unsigned int snvs_mask; 73 unsigned int snvs_on_mask; 74 }; 75 76 #if IS_ENABLED(CONFIG_REGULATOR_ROHM) 77 int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs, 78 struct device_node *np, 79 const struct regulator_desc *desc, 80 struct regmap *regmap); 81 82 int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev, 83 unsigned int sel); 84 #endif 85 86 #endif 87