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video/vga: Add VGA_IS0_R

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Add a proper name for the "Input status register 0" IO address.
Currently we have some code that does reads using the aliasing
VGA_MSR_W define, making it unclear what register we're
actually reading.

v2: Remove stray '?'

Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251209075549.14051-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Ville Syrjälä 2025-12-09 09:55:49 +02:00
parent 359dd735ef
commit 46e51fd014
1 changed files with 1 additions and 0 deletions
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include/video/vga.h
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@ -46,6 +46,7 @@
#define VGA_MIS_R 0x3CC /* Misc Output Read Register */
#define VGA_MIS_W 0x3C2 /* Misc Output Write Register */
#define VGA_FTC_R 0x3CA /* Feature Control Read Register */
#define VGA_IS0_R 0x3C2 /* Input Status Register 0 */
#define VGA_IS1_RC 0x3DA /* Input Status Register 1 - color emulation */
#define VGA_IS1_RM 0x3BA /* Input Status Register 1 - mono emulation */
#define VGA_PEL_D 0x3C9 /* PEL Data Register */