This commit introduces netlink event support to the regulator subsystem. Changes: - Introduce event.c and regnl.h for netlink event handling. - Implement reg_generate_netlink_event to broadcast regulator events. - Update Makefile to include the new event.c file.
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| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | ||
| 2 | /* | ||
| 3 | * Regulator uapi header | ||
| 4 | * | ||
| 5 | * Author: Naresh Solanki <Naresh.Solanki@9elements.com> | ||
| 6 | */ | ||
| 7 | |||
| 8 | #ifndef _UAPI_REGULATOR_H | ||
| 9 | #define _UAPI_REGULATOR_H | ||
| 10 | |||
| 11 | #ifdef __KERNEL__ | ||
| 12 | #include <linux/types.h> | ||
| 13 | #else | ||
| 14 | #include <stdint.h> | ||
| 15 | #endif | ||
| 16 | |||
| 17 | /* | ||
| 18 | * Regulator notifier events. | ||
| 19 | * | ||
| 20 | * UNDER_VOLTAGE Regulator output is under voltage. | ||
| 21 | * OVER_CURRENT Regulator output current is too high. | ||
| 22 | * REGULATION_OUT Regulator output is out of regulation. | ||
| 23 | * FAIL Regulator output has failed. | ||
| 24 | * OVER_TEMP Regulator over temp. | ||
| 25 | * FORCE_DISABLE Regulator forcibly shut down by software. | ||
| 26 | * VOLTAGE_CHANGE Regulator voltage changed. | ||
| 27 | * Data passed is old voltage cast to (void *). | ||
| 28 | * DISABLE Regulator was disabled. | ||
| 29 | * PRE_VOLTAGE_CHANGE Regulator is about to have voltage changed. | ||
| 30 | * Data passed is "struct pre_voltage_change_data" | ||
| 31 | * ABORT_VOLTAGE_CHANGE Regulator voltage change failed for some reason. | ||
| 32 | * Data passed is old voltage cast to (void *). | ||
| 33 | * PRE_DISABLE Regulator is about to be disabled | ||
| 34 | * ABORT_DISABLE Regulator disable failed for some reason | ||
| 35 | * | ||
| 36 | * NOTE: These events can be OR'ed together when passed into handler. | ||
| 37 | */ | ||
| 38 | |||
| 39 | #define REGULATOR_EVENT_UNDER_VOLTAGE 0x01 | ||
| 40 | #define REGULATOR_EVENT_OVER_CURRENT 0x02 | ||
| 41 | #define REGULATOR_EVENT_REGULATION_OUT 0x04 | ||
| 42 | #define REGULATOR_EVENT_FAIL 0x08 | ||
| 43 | #define REGULATOR_EVENT_OVER_TEMP 0x10 | ||
| 44 | #define REGULATOR_EVENT_FORCE_DISABLE 0x20 | ||
| 45 | #define REGULATOR_EVENT_VOLTAGE_CHANGE 0x40 | ||
| 46 | #define REGULATOR_EVENT_DISABLE 0x80 | ||
| 47 | #define REGULATOR_EVENT_PRE_VOLTAGE_CHANGE 0x100 | ||
| 48 | #define REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE 0x200 | ||
| 49 | #define REGULATOR_EVENT_PRE_DISABLE 0x400 | ||
| 50 | #define REGULATOR_EVENT_ABORT_DISABLE 0x800 | ||
| 51 | #define REGULATOR_EVENT_ENABLE 0x1000 | ||
| 52 | /* | ||
| 53 | * Following notifications should be emitted only if detected condition | ||
| 54 | * is such that the HW is likely to still be working but consumers should | ||
| 55 | * take a recovery action to prevent problems esacalating into errors. | ||
| 56 | */ | ||
| 57 | #define REGULATOR_EVENT_UNDER_VOLTAGE_WARN 0x2000 | ||
| 58 | #define REGULATOR_EVENT_OVER_CURRENT_WARN 0x4000 | ||
| 59 | #define REGULATOR_EVENT_OVER_VOLTAGE_WARN 0x8000 | ||
| 60 | #define REGULATOR_EVENT_OVER_TEMP_WARN 0x10000 | ||
| 61 | #define REGULATOR_EVENT_WARN_MASK 0x1E000 | ||
| 62 | |||
| 63 | struct reg_genl_event { | ||
| 64 | char reg_name[32]; | ||
| 65 | uint64_t event; | ||
| 66 | }; | ||
| 67 | |||
| 68 | /* attributes of reg_genl_family */ | ||
| 69 | enum { | ||
| 70 | REG_GENL_ATTR_UNSPEC, | ||
| 71 | REG_GENL_ATTR_EVENT, /* reg event info needed by user space */ | ||
| 72 | __REG_GENL_ATTR_MAX, | ||
| 73 | }; | ||
| 74 | |||
| 75 | #define REG_GENL_ATTR_MAX (__REG_GENL_ATTR_MAX - 1) | ||
| 76 | |||
| 77 | /* commands supported by the reg_genl_family */ | ||
| 78 | enum { | ||
| 79 | REG_GENL_CMD_UNSPEC, | ||
| 80 | REG_GENL_CMD_EVENT, /* kernel->user notifications for reg events */ | ||
| 81 | __REG_GENL_CMD_MAX, | ||
| 82 | }; | ||
| 83 | |||
| 84 | #define REG_GENL_CMD_MAX (__REG_GENL_CMD_MAX - 1) | ||
| 85 | |||
| 86 | #define REG_GENL_FAMILY_NAME "reg_event" | ||
| 87 | #define REG_GENL_VERSION 0x01 | ||
| 88 | #define REG_GENL_MCAST_GROUP_NAME "reg_mc_group" | ||
| 89 | |||
| 90 | #endif /* _UAPI_REGULATOR_H */ | ||