diff options
author | Francisco Jerez <currojerez@riseup.net> | 2010-07-21 23:08:11 +0400 |
---|---|---|
committer | Ben Skeggs <bskeggs@redhat.com> | 2010-07-26 05:43:15 +0400 |
commit | 8bded189552800cae6c333475a54dabe048a74aa (patch) | |
tree | 73f96420903c2a3167812128d6c7bf0d5957ad31 /drivers/gpu/drm/nouveau/nv30_fb.c | |
parent | b01f06085e62c36659a5b6bde359ed1d98da91d7 (diff) | |
download | linux-8bded189552800cae6c333475a54dabe048a74aa.tar.xz |
drm/nv30: Init the PFB+0x3xx memory timing regs.
Fixes the randomly flashing vertical lines seen on some nv3x after a
cold-boot.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv30_fb.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nv30_fb.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv30_fb.c b/drivers/gpu/drm/nouveau/nv30_fb.c new file mode 100644 index 000000000000..9d35c8b3b839 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv30_fb.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2010 Francisco Jerez. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" +#include "nouveau_drm.h" + +static int +calc_ref(int b, int l, int i) +{ + int j, x = 0; + + for (j = 0; j < 4; j++) { + int n = (b >> (8 * j) & 0xf); + int m = (l >> (8 * i) & 0xff) + 2 * (n & 0x8 ? n - 0x10 : n); + + x |= (0x80 | (m & 0x1f)) << (8 * j); + } + + return x; +} + +int +nv30_fb_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; + int i, j; + + pfb->num_tiles = NV10_PFB_TILE__SIZE; + + /* Turn all the tiling regions off. */ + for (i = 0; i < pfb->num_tiles; i++) + pfb->set_region_tiling(dev, i, 0, 0, 0); + + /* Init the memory timing regs at 0x10037c/0x1003ac */ + if (dev_priv->chipset == 0x30 || + dev_priv->chipset == 0x31 || + dev_priv->chipset == 0x35) { + /* Related to ROP count */ + int n = (dev_priv->chipset == 0x31 ? 2 : 4); + int b = (dev_priv->chipset > 0x30 ? + nv_rd32(dev, 0x122c) & 0xf : 0); + int l = nv_rd32(dev, 0x1003d0); + + for (i = 0; i < n; i++) { + for (j = 0; j < 3; j++) + nv_wr32(dev, 0x10037c + 0xc * i + 0x4 * j, + calc_ref(b, l, j)); + + for (j = 0; j < 2; j++) + nv_wr32(dev, 0x1003ac + 0x8 * i + 0x4 * j, + calc_ref(b, l, j)); + } + } + + return 0; +} + +void +nv30_fb_takedown(struct drm_device *dev) +{ +} |