From e9d14aeb3005fc09a937ca419c08b3c612a76a90 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
Date: Tue, 22 Apr 2014 16:53:52 +0900
Subject: [PATCH] drm/radeon: Fix num_banks calculation for SI
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The way the tile mode array index was calculated only makes sense for
the CIK specific macrotile mode array. For SI, we need to use one of the
tile mode array indices reserved for displayable surfaces.

This happened to result in correct display most if not all of the time
because most of the SI tiling modes use the same number of banks.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by:  Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
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