linux-kernel - [PATCH 3.14 019/238] drm/radeon: tweak ACCEL

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Message-Id: <20141003212914.277550937@linuxfoundation.org>
Date:	Fri,  3 Oct 2014 14:28:54 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Alex Deucher <alexander.deucher@....com>,
	Andreas Boll <andreas.boll.dev@...il.com>
Subject: [PATCH 3.14 019/238] drm/radeon: tweak ACCEL_WORKING2 query for hawaii

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deucher@....com>

commit 3c64bd26f7e9bd589ebe0d1ebec69ef2f784c12d upstream.

Return 2 so we can be sure the kernel has the necessary
changes for acceleration to work.

Note: This patch depends on these two commits:
 - drm/radeon: fix cut and paste issue for hawaii.
 - drm/radeon: use packet2 for nop on hawaii with old firmware

Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Andreas Boll <andreas.boll.dev@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/radeon_kms.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -254,7 +254,14 @@ static int radeon_info_ioctl(struct drm_
 		}
 		break;
 	case RADEON_INFO_ACCEL_WORKING2:
-		*value = rdev->accel_working;
+		if (rdev->family == CHIP_HAWAII) {
+			if (rdev->accel_working)
+				*value = 2;
+			else
+				*value = 0;
+		} else {
+			*value = rdev->accel_working;
+		}
 		break;
 	case RADEON_INFO_TILING_CONFIG:
 		if (rdev->family >= CHIP_BONAIRE)


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