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Subject[ 19/46] drm/radeon: fix bank tiling parameters on evergreen
Date
From: Greg KH <gregkh@linuxfoundation.org>

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

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

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

commit c8d15edc17d836686d1f071e564800e1a2724fa6 upstream.

Handle the 16 bank case.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/radeon/evergreen.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1801,10 +1801,18 @@ static void evergreen_gpu_init(struct ra
if (rdev->flags & RADEON_IS_IGP)
rdev->config.evergreen.tile_config |= 1 << 4;
else {
- if ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT)
- rdev->config.evergreen.tile_config |= 1 << 4;
- else
+ switch ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) {
+ case 0: /* four banks */
rdev->config.evergreen.tile_config |= 0 << 4;
+ break;
+ case 1: /* eight banks */
+ rdev->config.evergreen.tile_config |= 1 << 4;
+ break;
+ case 2: /* sixteen banks */
+ default:
+ rdev->config.evergreen.tile_config |= 2 << 4;
+ break;
+ }
}
rdev->config.evergreen.tile_config |= 0 << 8;
rdev->config.evergreen.tile_config |=



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