Thread (10 messages) flat view 10 messages, 4 authors, 2025-12-30

Re: [PATCH v2 14/19] video/vga: Add VGA_IS0_R

From: Ville Syrjälä <hidden>
Date: 2025-12-18 16:58:03
Also in: dri-devel, intel-gfx, intel-xe

On Tue, Dec 09, 2025 at 12:55:49PM +0200, Jani Nikula wrote:
On Tue, 09 Dec 2025, Ville Syrjala [off-list ref] wrote:
quoted
From: Ville Syrjälä <redacted>

Add a proper name for the "Input status register 0" IO address.
Currently we have some code that does read addressed 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>
Helge, can you toss me an ack to merge this via drm-intel please?
quoted
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <redacted>
Reviewed-by: Jani Nikula <redacted>
quoted
---
 include/video/vga.h | 1 +
 1 file changed, 1 insertion(+)
diff --git a/include/video/vga.h b/include/video/vga.h
index 468764d6727a..2f13c371800b 100644
--- a/include/video/vga.h
+++ b/include/video/vga.h
@@ -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 */
-- 
Jani Nikula, Intel
-- 
Ville Syrjälä
Intel
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