accelerants/radeon/SetDisplayMode.c

40 	accelerator_info *ai, crtc_info *crtc, display_mode *mode, impactv_params *tv_params );
68 // list of registers that must be reset before display mode switch
104 // set display mode of one head;
107 	accelerator_info *ai, crtc_info *crtc, display_mode *mode, impactv_params *tv_params )
126 	crtc->mode = *mode;
129 	mode = &crtc->mode;
139 		if( mode->timing.h_display > fp_info->panel_xres )
140 			mode->timing.h_display = fp_info->panel_xres;
141 		if(	mode->timing.v_display > fp_info->panel_yres )
142 			mode->timing.v_display = fp_info->panel_yres;
146 			if( mode->timing.h_display < fp_info->panel_xres )
147 				mode->timing.h_display = fp_info->panel_xres;
148 			if(	mode->timing.v_display < fp_info->panel_yres )
149 				mode->timing.v_display = fp_info->panel_yres;
158 		mode->timing.h_total = mode->timing.h_display + fp_info->h_blank;
159 		mode->timing.h_sync_start = mode->timing.h_display + fp_info->h_over_plus;
160 		mode->timing.h_sync_end = mode->timing.h_sync_start + fp_info->h_sync_width;
161 		mode->timing.v_total = mode->timing.v_display + fp_info->v_blank;
162 		mode->timing.v_sync_start = mode->timing.v_display + fp_info->v_over_plus;
163 		mode->timing.v_sync_end = mode->timing.v_sync_start + fp_info->v_sync_width;
165 		mode->timing.pixel_clock = fp_info->dot_clock;
170 		if( mode->timing.h_display > 1024 )
171 			mode->timing.h_display = 1024;
173 		if( mode->timing.v_display > 768 )
174 			mode->timing.v_display = 768;
182 	mode->timing.pixel_clock *= 1000;
184 	// TV stuff must be done first as it tweaks the display mode
190 			mode, &tweaked_mode );
192 		*mode = tweaked_mode;
195 	Radeon_GetFormat( mode->space, &format, &bpp );
222 	Radeon_CalcCRTCRegisters( ai, crtc, mode, &crtc_values );
227 		Radeon_CalcImpacTVRegisters( ai, mode, tv_params, &impactv_values,
232 		Radeon_CalcCRTPLLDividers( &si->pll, mode, &dividers );
243 	Radeon_CalcPLLRegisters( mode, &dividers, &pll_values );
247 		Radeon_CalcRMXRegisters( fp_info, mode,
255 	mode->timing.pixel_clock /= 1000;
271 	//if( mode->timing.pixel_clock )
346 // public function: set display mode
352 	display_mode bounds, mode;
354 	mode = bounds = *mode_in;
358 	SHOW_FLOW( 2, "width=%d, height=%d", mode.timing.h_display, mode.timing.v_display );
360 	// check mode and tweak parameters so we can program hardware
362 	if( PROPOSE_DISPLAY_MODE( &mode, &bounds, &bounds ) == B_ERROR ) {
363 		SHOW_ERROR0( 2, "invalid mode" );
370 	// do this before equality check to recognize changes of multi-monitor mode
371 	Radeon_DetectMultiMode( vc, &mode );
373 	// mode switches can take quite long and are visible,
375 	if( memcmp( &mode, &vc->mode, sizeof( display_mode )) == 0 &&
382 	// affects effective display mode
408 	memcpy( &vc->mode, &mode, sizeof( display_mode ));
410 	// verify hardware restrictions *after* saving mode
411 	// e.g. if you want a span mode but have one monitor disconnected,
414 	Radeon_VerifyMultiMode( vc, si, &mode );
422 	vc->different_heads = Radeon_DifferentPorts( &mode );
425 	vc->scroll = mode.flags & B_SCROLL;
453 		Radeon_GetFormat( mode.space, &format, &bpp );
454 		vc->pitch = Radeon_RoundVWidth( mode.virtual_width, bpp ) * bpp;
455 		am.size = vc->pitch * mode.virtual_height;
476 	Radeon_InitMultiModeVars( ai, &mode );
502 		// then change the mode
504 			err1 = Radeon_SetMode( ai, &si->crtc[0], &mode, &tv_params );
506 			err2 = Radeon_SetMode( ai, &si->crtc[1], &mode, &tv_params );
542 	Radeon_MoveDisplay( ai, mode.h_display_start, mode.v_display_start );