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Commit eeb64c14 authored by Samuel Thibault's avatar Samuel Thibault Committed by Dmitry Torokhov
Browse files

tty/vt/keyboard: define LED triggers for VT keyboard lock states 



In addition to defining triggers for VT LED states, let's define triggers
for VT keyboard lock states, such as "kbd-shiftlock", "kbd-altgrlock", etc.

This permits to fix #7063 from userland by using a modifier to implement
proper CapsLock behavior and have the keyboard caps lock led show that
modifier state.

Signed-off-by: default avatarSamuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: default avatarPavel Machek <pavel@ucw.cz>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 52355522

drivers/tty/vt/keyboard.c

+19 −8
Original line number Diff line number Diff line
@@ -130,7 +130,7 @@ static char rep; /* flag telling character repeat */ 


static int shift_state = 0;



static unsigned char ledstate = 0xff;			/* undefined */

static unsigned int ledstate = -1U;			/* undefined */

static unsigned char ledioctl;



/*
@@ -975,7 +975,7 @@ static void kbd_led_trigger_activate(struct led_classdev *cdev) 
		container_of(cdev->trigger, struct kbd_led_trigger, trigger);



	tasklet_disable(&keyboard_tasklet);

	if (ledstate != 0xff)

	if (ledstate != -1U)

		led_trigger_event(&trigger->trigger,

				  ledstate & trigger->mask ?

					LED_FULL : LED_OFF);
@@ -990,11 +990,23 @@ static void kbd_led_trigger_activate(struct led_classdev *cdev) 
		.mask	= BIT(_led_bit),			\

	}



#define KBD_LOCKSTATE_TRIGGER(_led_bit, _name)		\

	KBD_LED_TRIGGER((_led_bit) + 8, _name)



static struct kbd_led_trigger kbd_led_triggers[] = {

	KBD_LED_TRIGGER(VC_SCROLLOCK, "kbd-scrollock"),

	KBD_LED_TRIGGER(VC_NUMLOCK,   "kbd-numlock"),

	KBD_LED_TRIGGER(VC_CAPSLOCK,  "kbd-capslock"),

	KBD_LED_TRIGGER(VC_KANALOCK,  "kbd-kanalock"),



	KBD_LOCKSTATE_TRIGGER(VC_SHIFTLOCK,  "kbd-shiftlock"),

	KBD_LOCKSTATE_TRIGGER(VC_ALTGRLOCK,  "kbd-altgrlock"),

	KBD_LOCKSTATE_TRIGGER(VC_CTRLLOCK,   "kbd-ctrllock"),

	KBD_LOCKSTATE_TRIGGER(VC_ALTLOCK,    "kbd-altlock"),

	KBD_LOCKSTATE_TRIGGER(VC_SHIFTLLOCK, "kbd-shiftllock"),

	KBD_LOCKSTATE_TRIGGER(VC_SHIFTRLOCK, "kbd-shiftrlock"),

	KBD_LOCKSTATE_TRIGGER(VC_CTRLLLOCK,  "kbd-ctrlllock"),

	KBD_LOCKSTATE_TRIGGER(VC_CTRLRLOCK,  "kbd-ctrlrlock"),

};



static void kbd_propagate_led_state(unsigned int old_state,
@@ -1073,7 +1085,7 @@ static void kbd_init_leds(void) 
 */

static unsigned char getledstate(void)

{

	return ledstate;

	return ledstate & 0xff;

}



void setledstate(struct kbd_struct *kb, unsigned int led)
@@ -1183,11 +1195,12 @@ void vt_kbd_con_stop(int console) 
 */

static void kbd_bh(unsigned long dummy)

{

	unsigned char leds;

	unsigned int leds;

	unsigned long flags;



	spin_lock_irqsave(&led_lock, flags);

	leds = getleds();

	leds |= (unsigned int)kbd->lockstate << 8;

	spin_unlock_irqrestore(&led_lock, flags);



	if (leds != ledstate) {
@@ -1539,10 +1552,8 @@ static void kbd_start(struct input_handle *handle) 
{

	tasklet_disable(&keyboard_tasklet);



	if (ledstate != 0xff) {

		unsigned int state = ledstate;

		kbd_update_leds_helper(handle, &state);

	}

	if (ledstate != -1U)

		kbd_update_leds_helper(handle, &ledstate);



	tasklet_enable(&keyboard_tasklet);

}