From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jason A. Donenfeld" Subject: [PATCH 1/3] Input: atkbd - add LED triggers for keyboard state Date: Thu, 22 Aug 2013 16:02:10 +0200 Message-ID: <1377180132-4933-1-git-send-email-Jason@zx2c4.com> Return-path: Received: from frisell.zx2c4.com ([192.95.5.64]:38115 "EHLO frisell.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752958Ab3HVOJi (ORCPT ); Thu, 22 Aug 2013 10:09:38 -0400 Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-acpi@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mjg@redhat.com, rjw@sisk.pl, len.brown@intel.com, dtor@insightbb.com, "Jason A. Donenfeld" Many new laptop keyboards aren't shipping with LEDs in the keys for caps lock, num lock, and scroll lock. They do, however, ship with many LEDs for specialized functions that mostly go non-utilized by any current Linux drivers. Having a caps lock LED is very helpful in early boot full disk encryption, where a fancy GUI is not available to show that caps lock is activated. This patch wires in the caps, num, and scroll lock states of the keyboard into the generic LED trigger subsystem, so that integrators can have different LEDs activated on caps/num/scroll lock state changes. Signed-off-by: Jason A. Donenfeld --- drivers/input/keyboard/atkbd.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c index 2626773..15061bf 100644 --- a/drivers/input/keyboard/atkbd.c +++ b/drivers/input/keyboard/atkbd.c @@ -28,6 +28,7 @@ #include #include #include +#include #define DRIVER_DESC "AT and PS/2 keyboard driver" @@ -302,6 +303,12 @@ static const unsigned int xl_table[] = { ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL, }; +#ifdef CONFIG_LEDS_TRIGGERS +struct led_trigger *capsl_led_trigger = 0; +struct led_trigger *numl_led_trigger = 0; +struct led_trigger *scrolll_led_trigger = 0; +#endif + /* * Checks if we should mangle the scancode to extract 'release' bit * in translated mode. @@ -559,6 +566,12 @@ static int atkbd_set_leds(struct atkbd *atkbd) if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS)) return -1; +#ifdef CONFIG_LEDS_TRIGGERS + led_trigger_event(capsl_led_trigger, test_bit(LED_CAPSL, dev->led) ? LED_FULL : LED_OFF); + led_trigger_event(numl_led_trigger, test_bit(LED_NUML, dev->led) ? LED_FULL : LED_OFF); + led_trigger_event(scrolll_led_trigger, test_bit(LED_SCROLLL, dev->led) ? LED_FULL : LED_OFF); +#endif + if (atkbd->extra) { param[0] = 0; param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) @@ -1781,12 +1794,25 @@ static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = { static int __init atkbd_init(void) { dmi_check_system(atkbd_dmi_quirk_table); +#ifdef CONFIG_LEDS_TRIGGERS + led_trigger_register_simple("caps-lock", &capsl_led_trigger); + led_trigger_register_simple("num-lock", &numl_led_trigger); + led_trigger_register_simple("scroll-lock", &scrolll_led_trigger); +#endif return serio_register_driver(&atkbd_drv); } static void __exit atkbd_exit(void) { +#ifdef CONFIG_LEDS_TRIGGERS + led_trigger_unregister_simple(capsl_led_trigger); + capsl_led_trigger = 0; + led_trigger_unregister_simple(numl_led_trigger); + numl_led_trigger = 0; + led_trigger_unregister_simple(scrolll_led_trigger); + scrolll_led_trigger = 0; +#endif serio_unregister_driver(&atkbd_drv); } -- 1.8.3.2