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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-11-16 12:59:21 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-11-28 18:12:29 +0300 |
| commit | 0ccaa3dde97bd30ae615c66fc20080e920ec9b4e (patch) | |
| tree | cbd7ffc19a6149b07b7b8a796f6d85387e855c2a /drivers/gpu/drm/ast/ast_reg.h | |
| parent | c350a08ac7ec933f1dc8a143ebab60164ed4d90b (diff) | |
| download | linux-0ccaa3dde97bd30ae615c66fc20080e920ec9b4e.tar.xz | |
drm/ast: Rework I/O register setup
There are three different ways of retrieving the I/O-memory ranges
for AST devices: either from PCI BAR 1, from PCI BAR 2 or from PCI
BAR 1 by 'guessing'.
Make the respective code more readable by making each case self-
contained. Also add error checking against the length of the PCI
BARs.
v2:
* fix I/O range length to 128 bytes
* fix length test for PCI BAR 2
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231116100240.22975-3-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast/ast_reg.h')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_reg.h b/drivers/gpu/drm/ast/ast_reg.h index 555286ecf520..05bab94a9a90 100644 --- a/drivers/gpu/drm/ast/ast_reg.h +++ b/drivers/gpu/drm/ast/ast_reg.h @@ -10,6 +10,7 @@ */ #define AST_IO_MM_OFFSET (0x380) +#define AST_IO_MM_LENGTH (128) #define AST_IO_VGAARI_W (0x40) #define AST_IO_VGAMR_W (0x42) |