linux/drivers/gpu/drm/nouveau/nv04_mc.c
Francisco Jerez 112d20ad5c drm/nouveau: Disable PROM access on init.
On older cards (<nv17) scanout gets blocked when the ROM is being
accessed. PROM access usually comes out enabled from suspend, switch
it off.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-07-13 10:13:58 +10:00

25 lines
435 B
C

#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
int
nv04_mc_init(struct drm_device *dev)
{
/* Power up everything, resetting each individual unit will
* be done later if needed.
*/
nv_wr32(dev, NV03_PMC_ENABLE, 0xFFFFFFFF);
/* Disable PROM access. */
nv_wr32(dev, NV_PBUS_PCI_NV_20, NV_PBUS_PCI_NV_20_ROM_SHADOW_ENABLED);
return 0;
}
void
nv04_mc_takedown(struct drm_device *dev)
{
}