linux-kernel - [PATCH 3.4 161/214] drm/radeon: fix amd afusion gpu setup aka sumo v2

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Date:	Wed,  4 Jun 2014 21:18:44 -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, Jerome Glisse <jglisse@...hat.com>,
	Alex Deucher <alexander.deucher@....com>,
	Ben Hutchings <ben@...adent.org.uk>,
	Weng Meiling <wengmeiling.weng@...wei.com>
Subject: [PATCH 3.4 161/214] drm/radeon: fix amd afusion gpu setup aka sumo v2

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

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

From: Jerome Glisse <jglisse@...hat.com>

commit bd25f0783dc3fb72e1e2779c2b99b2d34b67fa8a upstream.

Set the proper number of tile pipe that should be a multiple of
pipe depending on the number of se engine.

Fix:
https://bugs.freedesktop.org/show_bug.cgi?id=56405
https://bugs.freedesktop.org/show_bug.cgi?id=56720

v2: Don't change sumo2

Signed-off-by: Jerome Glisse <jglisse@...hat.com>
Reviewed-by: Alex Deucher <alexander.deucher@....com>
[bwh: Backported to 3.2: don't define/use *_GB_ADDR_CONFIG_GOLDEN]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Cc: Weng Meiling <wengmeiling.weng@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/evergreen.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1874,7 +1874,7 @@ static void evergreen_gpu_init(struct ra
 	case CHIP_SUMO:
 		rdev->config.evergreen.num_ses = 1;
 		rdev->config.evergreen.max_pipes = 4;
-		rdev->config.evergreen.max_tile_pipes = 2;
+		rdev->config.evergreen.max_tile_pipes = 4;
 		if (rdev->pdev->device == 0x9648)
 			rdev->config.evergreen.max_simds = 3;
 		else if ((rdev->pdev->device == 0x9647) ||
@@ -1963,7 +1963,7 @@ static void evergreen_gpu_init(struct ra
 		break;
 	case CHIP_CAICOS:
 		rdev->config.evergreen.num_ses = 1;
-		rdev->config.evergreen.max_pipes = 4;
+		rdev->config.evergreen.max_pipes = 2;
 		rdev->config.evergreen.max_tile_pipes = 2;
 		rdev->config.evergreen.max_simds = 2;
 		rdev->config.evergreen.max_backends = 1 * rdev->config.evergreen.num_ses;


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