1 /* $OpenBSD: ofw_machdep.h,v 1.10 2020/04/02 19:27:51 gkoehler Exp $ */ 2 3 /* 4 * Copyright (c) 2002, Miodrag Vallat. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #include <machine/cpu.h> 30 #include <machine/psl.h> 31 32 extern int cons_backlight_available; 33 34 void ofwconprobe(void); 35 36 struct rasops_info; 37 void ofwconsswitch(struct rasops_info *); 38 39 /* 40 * For some reason, setting the brightness under 0x29 from OF switches the 41 * backlight off, and it won't be switched on again until you set the 42 * brightness above 0x33. All hail hysteresis! -- miod 43 */ 44 #define MIN_BRIGHTNESS 0x34 45 #define MAX_BRIGHTNESS 0xff 46 #define STEP_BRIGHTNESS 8 47 #define DEFAULT_BRIGHTNESS 0x80 48 extern int cons_brightness; 49 50 void of_setbacklight(int); 51 void of_setbrightness(int); 52 void of_setcolors(const uint8_t *, unsigned int, unsigned int); 53 54 void OF_quiesce(void); 55 56 static inline uint32_t 57 ofw_msr(void) 58 { 59 uint32_t s = ppc_mfmsr(); 60 61 ppc_mtmsr(s & ~(PSL_EE|PSL_RI)); /* turn off interrupts */ 62 return s; 63 } 64