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[PATCH] intelfb: Fix regression (blank display) from ioremap patch 

- Workaround for the ioremap patch that produces a blank display on some
  chipsets
- Make hwcursor = 0 the default.  The hardware cursor does not work with all
  hardware.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Antonino A. Daplas 2005-09-29 05:19:51 +08:00 committed by Linus Torvalds
parent b2846dfa4a
commit 375726d7ed
2 changed files with 11 additions and 11 deletions
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1
drivers/video/Kconfig
View File

@ -768,6 +768,7 @@ config FB_INTEL
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_SOFT_CURSOR
help
This driver supports the on-board graphics built in to the Intel
830M/845G/852GM/855GM/865G chipsets.

21
drivers/video/intelfb/intelfbdrv.c
View File

@ -226,7 +226,7 @@ MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
static int accel = 1;
static int vram = 4;
static int hwcursor = 1;
static int hwcursor = 0;
static int mtrr = 1;
static int fixed = 0;
static int noinit = 0;
@ -609,15 +609,9 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
dinfo->accel = 0;
}
if (MB(voffset) < stolen_size)
offset = (stolen_size >> 12);
else
offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
/* Framebuffer parameters - Use all the stolen memory if >= vram */
if (ROUND_UP_TO_PAGE(stolen_size) >= ((offset << 12) + MB(vram))) {
if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
dinfo->fb.offset = 0;
dinfo->fbmem_gart = 0;
} else {
dinfo->fb.size = MB(vram);
@ -648,6 +642,11 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENODEV;
}
if (MB(voffset) < stolen_size)
offset = (stolen_size >> 12);
else
offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
/* set the mem offsets - set them after the already used pages */
if (dinfo->accel) {
dinfo->ring.offset = offset + gtt_info.current_memory;
@ -662,10 +661,11 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
+ (dinfo->cursor.size >> 12);
}
/* Allocate memories (which aren't stolen) */
/* Map the fb and MMIO regions */
/* ioremap only up to the end of used aperture */
dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
(dinfo->aperture.physical, (dinfo->fb.offset << 12)
(dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
+ dinfo->fb.size);
if (!dinfo->aperture.virtual) {
ERR_MSG("Cannot remap FB region.\n");
@ -682,7 +682,6 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENODEV;
}
/* Allocate memories (which aren't stolen) */
if (dinfo->accel) {
if (!(dinfo->gtt_ring_mem =
agp_allocate_memory(bridge, dinfo->ring.size >> 12,
@ -1484,7 +1483,7 @@ intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
#endif
if (!dinfo->hwcursor)
return -ENXIO;
return soft_cursor(info, cursor);
intelfbhw_cursor_hide(dinfo);