^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Input layer to RF Kill interface connector
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2007 Dmitry Torokhov
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * If you ever run into a situation in which you have a SW_ type rfkill
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * input device, then you can revive code that was removed in the patch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * "rfkill-input: remove unused code".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/rfkill.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "rfkill.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) enum rfkill_input_master_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) RFKILL_INPUT_MASTER_UNLOCK = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) RFKILL_INPUT_MASTER_RESTORE = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) RFKILL_INPUT_MASTER_UNBLOCKALL = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) NUM_RFKILL_INPUT_MASTER_MODES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Delay (in ms) between consecutive switch ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define RFKILL_OPS_DELAY 200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static enum rfkill_input_master_mode rfkill_master_switch_mode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) RFKILL_INPUT_MASTER_UNBLOCKALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) MODULE_PARM_DESC(master_switch_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) "SW_RFKILL_ALL ON should: 0=do nothing (only unlock); 1=restore; 2=unblock all");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static spinlock_t rfkill_op_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static bool rfkill_op_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static unsigned long rfkill_sw_pending[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static unsigned long rfkill_sw_state[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) enum rfkill_sched_op {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) RFKILL_GLOBAL_OP_EPO = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) RFKILL_GLOBAL_OP_RESTORE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) RFKILL_GLOBAL_OP_UNLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) RFKILL_GLOBAL_OP_UNBLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static enum rfkill_sched_op rfkill_master_switch_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static enum rfkill_sched_op rfkill_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static void __rfkill_handle_global_op(enum rfkill_sched_op op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) switch (op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case RFKILL_GLOBAL_OP_EPO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) rfkill_epo();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case RFKILL_GLOBAL_OP_RESTORE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) rfkill_restore_states();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) case RFKILL_GLOBAL_OP_UNLOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) rfkill_remove_epo_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) case RFKILL_GLOBAL_OP_UNBLOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) rfkill_remove_epo_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) for (i = 0; i < NUM_RFKILL_TYPES; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) rfkill_switch_all(i, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* memory corruption or bug, fail safely */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) rfkill_epo();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) WARN(1, "Unknown requested operation %d! "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) "rfkill Emergency Power Off activated\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static void __rfkill_handle_normal_op(const enum rfkill_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) const bool complement)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) bool blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) blocked = rfkill_get_global_sw_state(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (complement)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) blocked = !blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) rfkill_switch_all(type, blocked);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static void rfkill_op_handler(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) bool c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) spin_lock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (rfkill_op_pending) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) enum rfkill_sched_op op = rfkill_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) rfkill_op_pending = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) memset(rfkill_sw_pending, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) sizeof(rfkill_sw_pending));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) spin_unlock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) __rfkill_handle_global_op(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) spin_lock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * handle global ops first -- during unlocked period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * we might have gotten a new global op.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (rfkill_op_pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (rfkill_is_epo_lock_active())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) for (i = 0; i < NUM_RFKILL_TYPES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (__test_and_clear_bit(i, rfkill_sw_pending)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) c = __test_and_clear_bit(i, rfkill_sw_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) spin_unlock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) __rfkill_handle_normal_op(i, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) spin_lock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) } while (rfkill_op_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) spin_unlock_irq(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static DECLARE_DELAYED_WORK(rfkill_op_work, rfkill_op_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static unsigned long rfkill_last_scheduled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static unsigned long rfkill_ratelimit(const unsigned long last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return time_after(jiffies, last + delay) ? 0 : delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static void rfkill_schedule_ratelimited(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (schedule_delayed_work(&rfkill_op_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) rfkill_ratelimit(rfkill_last_scheduled)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) rfkill_last_scheduled = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static void rfkill_schedule_global_op(enum rfkill_sched_op op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) spin_lock_irqsave(&rfkill_op_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) rfkill_op = op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) rfkill_op_pending = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /* bypass the limiter for EPO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) mod_delayed_work(system_wq, &rfkill_op_work, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) rfkill_last_scheduled = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) rfkill_schedule_ratelimited();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) spin_unlock_irqrestore(&rfkill_op_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static void rfkill_schedule_toggle(enum rfkill_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (rfkill_is_epo_lock_active())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) spin_lock_irqsave(&rfkill_op_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (!rfkill_op_pending) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) __set_bit(type, rfkill_sw_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) __change_bit(type, rfkill_sw_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) rfkill_schedule_ratelimited();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) spin_unlock_irqrestore(&rfkill_op_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static void rfkill_schedule_evsw_rfkillall(int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) rfkill_schedule_global_op(rfkill_master_switch_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static void rfkill_event(struct input_handle *handle, unsigned int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) unsigned int code, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (type == EV_KEY && data == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) switch (code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) case KEY_WLAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) rfkill_schedule_toggle(RFKILL_TYPE_WLAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) case KEY_BLUETOOTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) rfkill_schedule_toggle(RFKILL_TYPE_BLUETOOTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) case KEY_UWB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) rfkill_schedule_toggle(RFKILL_TYPE_UWB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) case KEY_WIMAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) rfkill_schedule_toggle(RFKILL_TYPE_WIMAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case KEY_RFKILL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) rfkill_schedule_toggle(RFKILL_TYPE_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) } else if (type == EV_SW && code == SW_RFKILL_ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) rfkill_schedule_evsw_rfkillall(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static int rfkill_connect(struct input_handler *handler, struct input_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) const struct input_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct input_handle *handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (!handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) handle->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) handle->handler = handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) handle->name = "rfkill";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /* causes rfkill_start() to be called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) error = input_register_handle(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) goto err_free_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) error = input_open_device(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) goto err_unregister_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) err_unregister_handle:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) input_unregister_handle(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) err_free_handle:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) kfree(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static void rfkill_start(struct input_handle *handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * Take event_lock to guard against configuration changes, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * should be able to deal with concurrency with rfkill_event()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * just fine (which event_lock will also avoid).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) spin_lock_irq(&handle->dev->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (test_bit(EV_SW, handle->dev->evbit) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) test_bit(SW_RFKILL_ALL, handle->dev->swbit))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) handle->dev->sw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) spin_unlock_irq(&handle->dev->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static void rfkill_disconnect(struct input_handle *handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) input_close_device(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) input_unregister_handle(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) kfree(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static const struct input_device_id rfkill_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) .evbit = { BIT_MASK(EV_KEY) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .evbit = { BIT_MASK(EV_KEY) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .evbit = { BIT_MASK(EV_KEY) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .evbit = { BIT_MASK(EV_KEY) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) .evbit = { BIT_MASK(EV_KEY) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) .keybit = { [BIT_WORD(KEY_RFKILL)] = BIT_MASK(KEY_RFKILL) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) .evbit = { BIT(EV_SW) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .swbit = { [BIT_WORD(SW_RFKILL_ALL)] = BIT_MASK(SW_RFKILL_ALL) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static struct input_handler rfkill_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .name = "rfkill",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .event = rfkill_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .connect = rfkill_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) .start = rfkill_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) .disconnect = rfkill_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) .id_table = rfkill_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int __init rfkill_handler_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) switch (rfkill_master_switch_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) case RFKILL_INPUT_MASTER_UNBLOCKALL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) case RFKILL_INPUT_MASTER_RESTORE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) rfkill_master_switch_op = RFKILL_GLOBAL_OP_RESTORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) case RFKILL_INPUT_MASTER_UNLOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) spin_lock_init(&rfkill_op_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /* Avoid delay at first schedule */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) rfkill_last_scheduled =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return input_register_handler(&rfkill_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) void __exit rfkill_handler_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) input_unregister_handler(&rfkill_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) cancel_delayed_work_sync(&rfkill_op_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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