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_BD71837 = 0, 12 ROHM_CHIP_TYPE_BD71847, 13 ROHM_CHIP_TYPE_BD70528, 14 ROHM_CHIP_TYPE_BD71828, 15 ROHM_CHIP_TYPE_AMOUNT 16 }; 17 18 struct rohm_regmap_dev { 19 struct device *dev; 20 struct regmap *regmap; 21 }; 22 23 enum { 24 ROHM_DVS_LEVEL_UNKNOWN, 25 ROHM_DVS_LEVEL_RUN, 26 ROHM_DVS_LEVEL_IDLE, 27 ROHM_DVS_LEVEL_SUSPEND, 28 ROHM_DVS_LEVEL_LPSR, 29 ROHM_DVS_LEVEL_MAX = ROHM_DVS_LEVEL_LPSR, 30 }; 31 32 /** 33 * struct rohm_dvs_config - dynamic voltage scaling register descriptions 34 * 35 * @level_map: bitmap representing supported run-levels for this 36 * regulator 37 * @run_reg: register address for regulator config at 'run' state 38 * @run_mask: value mask for regulator voltages at 'run' state 39 * @run_on_mask: enable mask for regulator at 'run' state 40 * @idle_reg: register address for regulator config at 'idle' state 41 * @idle_mask: value mask for regulator voltages at 'idle' state 42 * @idle_on_mask: enable mask for regulator at 'idle' state 43 * @suspend_reg: register address for regulator config at 'suspend' state 44 * @suspend_mask: value mask for regulator voltages at 'suspend' state 45 * @suspend_on_mask: enable mask for regulator at 'suspend' state 46 * @lpsr_reg: register address for regulator config at 'lpsr' state 47 * @lpsr_mask: value mask for regulator voltages at 'lpsr' state 48 * @lpsr_on_mask: enable mask for regulator at 'lpsr' state 49 * 50 * Description of ROHM PMICs voltage configuration registers for different 51 * system states. This is used to correctly configure the PMIC at startup 52 * based on values read from DT. 53 */ 54 struct rohm_dvs_config { 55 uint64_t level_map; 56 unsigned int run_reg; 57 unsigned int run_mask; 58 unsigned int run_on_mask; 59 unsigned int idle_reg; 60 unsigned int idle_mask; 61 unsigned int idle_on_mask; 62 unsigned int suspend_reg; 63 unsigned int suspend_mask; 64 unsigned int suspend_on_mask; 65 unsigned int lpsr_reg; 66 unsigned int lpsr_mask; 67 unsigned int lpsr_on_mask; 68 }; 69 70 #if IS_ENABLED(CONFIG_REGULATOR_ROHM) 71 int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs, 72 struct device_node *np, 73 const struct regulator_desc *desc, 74 struct regmap *regmap); 75 76 #else 77 static inline 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 return 0; 83 } 84 #endif 85 86 #endif 87