From 7934da0f090bc6970fc259eff3f171e27966eeee Mon Sep 17 00:00:00 2001
From: Alexander von Gluck IV <kallisti5@unixzen.com>
Date: Wed, 12 Oct 2011 19:36:47 +0000
Subject: [PATCH] * add *very* preliminary dpms support   we will need to query
 the card dpms state   for each monitor at a later date

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42829 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../accelerants/radeon_hd/accelerant.cpp       |  3 +++
 src/add-ons/accelerants/radeon_hd/accelerant.h |  2 ++
 src/add-ons/accelerants/radeon_hd/hooks.cpp    |  2 --
 src/add-ons/accelerants/radeon_hd/mode.cpp     | 18 ++++++++++++++++++
 src/add-ons/accelerants/radeon_hd/mode.h       |  2 ++
 5 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/src/add-ons/accelerants/radeon_hd/accelerant.cpp b/src/add-ons/accelerants/radeon_hd/accelerant.cpp
index 64a0da7a13..e850c9faea 100644
--- a/src/add-ons/accelerants/radeon_hd/accelerant.cpp
+++ b/src/add-ons/accelerants/radeon_hd/accelerant.cpp
@@ -146,6 +146,9 @@ init_common(int device, bool isClone)
 	gInfo->is_clone = isClone;
 	gInfo->device = device;
 
+	gInfo->dpms_mode = B_DPMS_ON;
+		// initial state
+
 	// get basic info from driver
 
 	radeon_get_private_data data;
diff --git a/src/add-ons/accelerants/radeon_hd/accelerant.h b/src/add-ons/accelerants/radeon_hd/accelerant.h
index 9702e7562b..01ad458e59 100644
--- a/src/add-ons/accelerants/radeon_hd/accelerant.h
+++ b/src/add-ons/accelerants/radeon_hd/accelerant.h
@@ -56,6 +56,8 @@ struct accelerant_info {
 
 	gpu_mc_info		*mc_info;		// used for last known mc state
 
+	volatile uint32	dpms_mode;		// current driver dpms mode
+
 	// LVDS panel mode passed from the bios/startup.
 	display_mode	lvds_panel_mode;
 };
diff --git a/src/add-ons/accelerants/radeon_hd/hooks.cpp b/src/add-ons/accelerants/radeon_hd/hooks.cpp
index 9be18755a3..5e73ef48ab 100644
--- a/src/add-ons/accelerants/radeon_hd/hooks.cpp
+++ b/src/add-ons/accelerants/radeon_hd/hooks.cpp
@@ -35,12 +35,10 @@ get_accelerant_hook(uint32 feature, void *data)
 		*/
 
 		/* DPMS */
-		/*
 		case B_DPMS_CAPABILITIES:
 			return (void*)radeon_dpms_capabilities;
 		case B_DPMS_MODE:
 			return (void*)radeon_dpms_mode;
-		*/
 		case B_SET_DPMS_MODE:
 			return (void*)radeon_dpms_set;
 
diff --git a/src/add-ons/accelerants/radeon_hd/mode.cpp b/src/add-ons/accelerants/radeon_hd/mode.cpp
index 3b7607c04b..6763b603f4 100644
--- a/src/add-ons/accelerants/radeon_hd/mode.cpp
+++ b/src/add-ons/accelerants/radeon_hd/mode.cpp
@@ -97,6 +97,23 @@ radeon_get_edid_info(void* info, size_t size, uint32* edid_version)
 }
 
 
+uint32
+radeon_dpms_capabilities(void)
+{
+	// These should be pretty universally supported on Radeon HD cards
+	return B_DPMS_ON | B_DPMS_STAND_BY | B_DPMS_SUSPEND | B_DPMS_OFF;
+}
+
+
+uint32
+radeon_dpms_mode(void)
+{
+	// TODO : this really isn't a good long-term solution
+	// we may need to look at the encoder dpms scratch registers
+	return gInfo->dpms_mode;
+}
+
+
 void
 radeon_dpms_set(int mode)
 {
@@ -128,6 +145,7 @@ radeon_dpms_set(int mode)
 			}
 			break;
 	}
+	gInfo->dpms_mode = mode;
 }
 
 
diff --git a/src/add-ons/accelerants/radeon_hd/mode.h b/src/add-ons/accelerants/radeon_hd/mode.h
index 215a17c949..2a479d3808 100644
--- a/src/add-ons/accelerants/radeon_hd/mode.h
+++ b/src/add-ons/accelerants/radeon_hd/mode.h
@@ -29,6 +29,8 @@
 status_t create_mode_list(void);
 bool is_mode_supported(display_mode* mode);
 status_t is_mode_sane(display_mode *mode);
+uint32 radeon_dpms_capabilities(void);
+uint32 radeon_dpms_mode(void);
 void radeon_dpms_set(int mode);