diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2011-07-19 01:59:39 -0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-09-20 02:08:32 -0400 |
| commit | 6b70e481671cff087a39d40cd823435d0177000c (patch) | |
| tree | 2dab344baebe1747c6402db94dca642f6119731c /drivers/gpu/drm/nouveau/nouveau_i2c.c | |
| parent | 2228c6fe04ddc303e90c05dd9430539fbcd8fa18 (diff) | |
drm/nouveau: magic to make auxch on new macbooks booted in EFI mode work
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_i2c.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c index 739c0ac3a9b7..f6a27fabcfe0 100644 --- a/drivers/gpu/drm/nouveau/nouveau_i2c.c +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.c | |||
| @@ -286,7 +286,10 @@ nouveau_i2c_find(struct drm_device *dev, int index) | |||
| 286 | val = 0xe001; | 286 | val = 0xe001; |
| 287 | } | 287 | } |
| 288 | 288 | ||
| 289 | nv_wr32(dev, reg, (nv_rd32(dev, reg) & ~0xf003) | val); | 289 | /* nfi, but neither auxch or i2c work if it's 1 */ |
| 290 | nv_mask(dev, reg + 0x0c, 0x00000001, 0x00000000); | ||
| 291 | /* nfi, but switches auxch vs normal i2c */ | ||
| 292 | nv_mask(dev, reg + 0x00, 0x0000f003, val); | ||
| 290 | } | 293 | } |
| 291 | 294 | ||
| 292 | if (!i2c->chan && nouveau_i2c_init(dev, i2c, index)) | 295 | if (!i2c->chan && nouveau_i2c_init(dev, i2c, index)) |