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drivers/video/fbdev/atyfb: Clarify ioremap() base and length used

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Adjust the ioremap() call for the framebuffer to use the same
values we later use for the framebuffer. This will make it
easier to review the next change.

The size of the framebuffer varies but since this is for PCI we
*know* this defaults to 0x800000. atyfb_setup_generic() is
*only* used on PCI probe.

No functional change.

Signed-off-by: Luis R. Rodriguez <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andrzej Hajda <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Antonino Daplas <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Jean-Christophe Plagniol-Villard <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mathias Krause <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rob Clark <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tomi Valkeinen <[email protected]>
Cc: Toshi Kani <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Luis R. Rodriguez 2015-07-09 18:24:57 -07:00 • committed by Ingo Molnar
commit f55de6ec37
1 changed files with 15 additions and 1 deletions
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16
drivers/video/fbdev/aty/atyfb_base.c
View file

@ -3489,7 +3489,21 @@ static int atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info,
/* Map in frame buffer */
info->fix.smem_start = addr;
info->screen_base = ioremap(addr, 0x800000);
/*
* The framebuffer is not always 8 MiB, that's just the size of the
* PCI BAR. We temporarily abuse smem_len here to store the size
* of the BAR. aty_init() will later correct it to match the actual
* framebuffer size.
*
* On devices that don't have the auxiliary register aperture, the
* registers are housed at the top end of the framebuffer PCI BAR.
* aty_fudge_framebuffer_len() is used to reduce smem_len to not
* overlap with the registers.
*/
info->fix.smem_len = 0x800000;
info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
if (info->screen_base == NULL) {
ret = -ENOMEM;
goto atyfb_setup_generic_fail;