src/add-ons/accelerants/ati/mach64_dpms.cpp

   1 /*
   2         Haiku ATI video driver adapted from the X.org ATI driver.
   3
   4         Copyright 1992,1993,1994,1995,1996,1997 by Kevin E. Martin, Chapel Hill, North Carolina.
   5         Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
   6
   7         Copyright 2009 Haiku, Inc.  All rights reserved.
   8         Distributed under the terms of the MIT license.
   9
  10         Authors:
  11         Gerald Zajac 2009
  12 */
  13
  14
  15 #include "accelerant.h"
  16 #include "mach64.h"
  17
  18
  19
  20 uint32
  21 Mach64_DPMSCapabilities(void)
  22 {
  23         // Return DPMS modes supported by this device.
  24
  25         return B_DPMS_ON | B_DPMS_STAND_BY | B_DPMS_SUSPEND | B_DPMS_OFF;
  26 }
  27
  28
  29 uint32
  30 Mach64_GetDPMSMode(void)
  31 {
  32         // Return the current DPMS mode.
  33
  34         uint32 tmp = INREG(CRTC_GEN_CNTL);
  35         uint32 mode;
  36
  37         if( (tmp & CRTC_DISPLAY_DIS) == 0 )
  38                 mode = B_DPMS_ON;
  39         else if( (tmp & CRTC_VSYNC_DIS) == 0 )
  40                 mode = B_DPMS_STAND_BY;
  41         else if( (tmp & CRTC_HSYNC_DIS) == 0 )
  42                 mode = B_DPMS_SUSPEND;
  43         else
  44                 mode = B_DPMS_OFF;
  45
  46         TRACE("Mach64_DPMSMode() mode: %d\n", mode);
  47         return mode;
  48 }
  49
  50
  51 status_t
  52 Mach64_SetDPMSMode(uint32 dpmsMode)
  53 {
  54         // Set the display into one of the Display Power Management modes,
  55         // and return B_OK if successful, else return B_ERROR.
  56
  57         TRACE("Mach64_SetDPMSMode() mode: %d, display type: %d\n", dpmsMode, gInfo.sharedInfo->displayType);
  58
  59         int mask = (CRTC_HSYNC_DIS | CRTC_VSYNC_DIS);
  60
  61         switch (dpmsMode) {
  62                 case B_DPMS_ON:
  63                         // Screen: On; HSync: On, VSync: On.
  64                         OUTREGM(CRTC_GEN_CNTL, 0, mask);
  65                         break;
  66
  67                 case B_DPMS_STAND_BY:
  68                         // Screen: Off; HSync: Off, VSync: On.
  69                         OUTREGM(CRTC_GEN_CNTL, CRTC_HSYNC_DIS, mask);
  70                         break;
  71
  72                 case B_DPMS_SUSPEND:
  73                         // Screen: Off; HSync: On, VSync: Off.
  74                         OUTREGM(CRTC_GEN_CNTL, CRTC_VSYNC_DIS, mask);
  75                         break;
  76
  77                 case B_DPMS_OFF:
  78                         // Screen: Off; HSync: Off, VSync: Off.
  79                         OUTREGM(CRTC_GEN_CNTL, mask, mask);
  80                         break;
  81
  82                 default:
  83                         TRACE("Invalid DPMS mode %d\n", dpmsMode);
  84                         return B_ERROR;
  85         }
  86
  87         if (gInfo.sharedInfo->displayType == MT_LAPTOP) {
  88                 uint32 powerMgmt = (Mach64_GetLCDReg(LCD_POWER_MANAGEMENT)
  89                         & ~(STANDBY_NOW | SUSPEND_NOW | POWER_BLON | AUTO_POWER_UP));
  90
  91                 switch (dpmsMode) {
  92                 case B_DPMS_ON:
  93                         powerMgmt |= (POWER_BLON | AUTO_POWER_UP);
  94                         break;
  95
  96                 case B_DPMS_STAND_BY:
  97                         powerMgmt |= STANDBY_NOW;
  98                         break;
  99
 100                 case B_DPMS_SUSPEND:
 101                         powerMgmt |= SUSPEND_NOW;
 102                         break;
 103
 104                 case B_DPMS_OFF:
 105                         powerMgmt |= STANDBY_NOW | SUSPEND_NOW;
 106                         break;
 107                 }
 108
 109                 Mach64_PutLCDReg(LCD_POWER_MANAGEMENT, powerMgmt);
 110         }
 111
 112         return B_OK;
 113 }
 114