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drm/nouveau: magic to make auxch on new macbooks booted in EFI mode work
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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2228c6fe04
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6b70e48167
1 changed files with 4 additions and 1 deletions
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@ -286,7 +286,10 @@ nouveau_i2c_find(struct drm_device *dev, int index)
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val = 0xe001;
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}
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nv_wr32(dev, reg, (nv_rd32(dev, reg) & ~0xf003) | val);
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/* nfi, but neither auxch or i2c work if it's 1 */
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nv_mask(dev, reg + 0x0c, 0x00000001, 0x00000000);
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/* nfi, but switches auxch vs normal i2c */
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nv_mask(dev, reg + 0x00, 0x0000f003, val);
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}
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if (!i2c->chan && nouveau_i2c_init(dev, i2c, index))
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