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drm/nouveau: Workaround missing GPIO tables on an Apple iMac G4 NV18.

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This should fix the reported TV-out load detection false positives
(fdo bug 29455).

Reported-by: Vlado Plaga <rechner@vlado-do.de>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Francisco Jerez 2010-08-15 14:32:49 +02:00 committed by Ben Skeggs
parent 19bf5f7df9
commit 20d66daf0a
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/nouveau/nouveau_bios.c
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@ -5807,6 +5807,22 @@ parse_dcb_gpio_table(struct nvbios *bios)
gpio->line = tvdac_gpio[1] >> 4;
gpio->invert = tvdac_gpio[0] & 2;
}
} else {
/*
* No systematic way to store GPIO info on pre-v2.2
* DCBs, try to match the PCI device IDs.
*/
/* Apple iMac G4 NV18 */
if (dev->pdev->device == 0x0189 &&
dev->pdev->subsystem_vendor == 0x10de &&
dev->pdev->subsystem_device == 0x0010) {
struct dcb_gpio_entry *gpio = new_gpio_entry(bios);
gpio->tag = DCB_GPIO_TVDAC0;
gpio->line = 4;
}
}
if (!gpio_table_ptr)