* add required atombios.h from drm driver from linux 3.0 with a few tweaks

(we aren't taking ownership of this one.. yikes)
* add first AtomBIOS call to test the waters


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42578 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/accelerants/radeon_hd/atombios/atom.h

@@ -25,6 +25,8 @@
 #define ATOM_H
 
 
+#include "atombios.h"
+
 #include <String.h>
 #include <SupportDefs.h>
 

src/add-ons/accelerants/radeon_hd/bios.cpp

@@ -28,6 +28,52 @@
 atom_context *gAtomContext;
 
 
+void
+atombios_crtc_power(uint8 crt_id, int state)
+{
+	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTC);
+	ENABLE_CRTC_PS_ALLOCATION args;
+
+	memset(&args, 0, sizeof(args));
+
+	args.ucCRTC = crt_id;
+	args.ucEnable = state;
+
+	atom_execute_table(gAtomContext, index, (uint32*)&args);
+}
+
+
+void
+radeon_bios_init_scratch()
+{
+	radeon_shared_info &info = *gInfo->shared_info;
+
+	uint32 bios_2_scratch;
+	uint32 bios_6_scratch;
+
+	if (info.device_chipset >= RADEON_R600) {
+		bios_2_scratch = Read32(OUT, R600_BIOS_2_SCRATCH);
+		bios_6_scratch = Read32(OUT, R600_BIOS_6_SCRATCH);
+	} else {
+		bios_2_scratch = Read32(OUT, RADEON_BIOS_2_SCRATCH);
+		bios_6_scratch = Read32(OUT, RADEON_BIOS_6_SCRATCH);
+	}
+
+	bios_2_scratch &= ~ATOM_S2_VRI_BRIGHT_ENABLE;
+		// bios should control backlight
+	bios_6_scratch |= ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH;
+		// bios shouldn't handle mode switching
+
+	if (info.device_chipset >= RADEON_R600) {
+		Write32(OUT, R600_BIOS_2_SCRATCH, bios_2_scratch);
+		Write32(OUT, R600_BIOS_6_SCRATCH, bios_6_scratch);
+	} else {
+		Write32(OUT, RADEON_BIOS_2_SCRATCH, bios_2_scratch);
+		Write32(OUT, RADEON_BIOS_6_SCRATCH, bios_6_scratch);
+	}
+}
+
+
 status_t
 radeon_init_bios(uint8* bios)
 {
@@ -69,12 +115,8 @@ radeon_init_bios(uint8* bios)
 		return B_ERROR;
 	}
 
-	#if 0
+	// mutex_init(&rdev->mode_info.atom_context->mutex);
-	rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
+	radeon_bios_init_scratch();
-	mutex_init(&rdev->mode_info.atom_context->mutex);
-	radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
-	atom_allocate_fb_scratch(rdev->mode_info.atom_context);
-	#endif
 
 	return B_OK;
 }

src/add-ons/accelerants/radeon_hd/bios.h

@@ -14,6 +14,7 @@
 #include "atom.h"
 
 
+void atombios_crtc_power(uint8 crt_id, int state);
 status_t radeon_init_bios(uint8* bios);
 
 

src/add-ons/accelerants/radeon_hd/mode.cpp

@@ -13,6 +13,7 @@
 
 #include "accelerant_protos.h"
 #include "accelerant.h"
+#include "bios.h"
 #include "utility.h"
 #include "mode.h"
 #include "display.h"
@@ -343,7 +344,8 @@ radeon_set_display_mode(display_mode *mode)
 		// Skip if display is inactive
 		if (gDisplay[id]->active == false) {
 			CardBlankSet(id, true);
-			display_power(id, RHD_POWER_SHUTDOWN);
+			// LEGACY : display_power(id, RHD_POWER_SHUTDOWN);
+			atombios_crtc_power(id, ATOM_DISABLE);
 			continue;
 		}
 
@@ -352,7 +354,7 @@ radeon_set_display_mode(display_mode *mode)
 		CardModeSet(id, mode);
 		CardModeScale(id, mode);
 
-		display_power(id, RHD_POWER_RESET);
+		// LEGACY : display_power(id, RHD_POWER_RESET);
 
 		// Program connector controllers
 		switch (gDisplay[id]->connection_type) {
@@ -370,7 +372,8 @@ radeon_set_display_mode(display_mode *mode)
 		}
 
 		// Power CRT Controller
-		display_power(id, RHD_POWER_ON);
+		// LEGACY : display_power(id, RHD_POWER_ON);
+		atombios_crtc_power(id, ATOM_ENABLE);
 		CardBlankSet(id, false);
 
 		// Power connector controllers