From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 28 Mar 2003 03:33:02 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 28 Mar 2003 03:33:02 -0500 Received: from [195.39.17.254] ([195.39.17.254]:4868 "EHLO Elf.ucw.cz") by vger.kernel.org with ESMTP id ; Fri, 28 Mar 2003 03:32:13 -0500 Date: Thu, 27 Mar 2003 23:33:56 +0100 From: Pavel Machek To: vojtech@ucw.cz, kernel list , torvalds@transmeta.com Subject: Blank now key Message-ID: <20030327223356.GA193@elf.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! This is must-have for machines where backlight eats significant ammount of power. Please apply, Pavel Index: linux/drivers/char/keyboard.c =================================================================== --- linux.orig/drivers/char/keyboard.c 2003-03-27 11:10:04.000000000 +0100 +++ linux/drivers/char/keyboard.c 2003-03-16 18:51:05.000000000 +0100 @@ -20,6 +20,7 @@ * parts by Geert Uytterhoeven, May 1997 * * 27-05-97: Added support for the Magic SysRq Key (Martin Mares) + * 29-07-97: Added blank console key (Pavel Machek) * 30-07-98: Dead keys redone, aeb@cwi.nl. * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik) */ @@ -86,7 +87,8 @@ fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\ fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\ fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\ - fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num + fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num, \ + fn_blank_now typedef void (fn_handler_fn)(struct vc_data *vc, struct pt_regs *regs); static fn_handler_fn FN_HANDLERS; @@ -320,6 +322,25 @@ con_schedule_flip(tty); } +static void blank_now_do(unsigned long unused) +{ + do_poke_blanked_console = 0; + do_blank_screen(0); +} + +static struct timer_list blank_now_timer; + +static void fn_blank_now(struct vc_data *vc, struct pt_regs *regs) +{ + /* You ask why we have our own timer here? Well, it is because + we do not want user's release of keys to unblank + immediately. Even if we correctly guessed what is press and + what is release, thinkpad's broken bios will turn on + backlight for us... */ + blank_now_timer.expires = jiffies + HZ; + add_timer(&blank_now_timer); +} + static void applkey(struct vc_data *vc, int key, char mode) { static char buf[] = { 0x1b, 'O', 0x00, 0x00 }; @@ -1215,6 +1258,9 @@ { int i; + init_timer(&blank_now_timer); + blank_now_timer.function = blank_now_do; + kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS; kbd0.ledmode = LED_SHOW_FLAGS; kbd0.lockstate = KBD_DEFLOCK; -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?]