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 */ | |