From 731c88d503ef07a06a03dd17a6e9163941b329da Mon Sep 17 00:00:00 2001
From: Kevin O'Connor <kevin@koconnor.net>
Date: Mon, 1 Apr 2024 13:44:58 -0400
Subject: stdvgaio: Only read/write one color palette entry at a time

Introduce stdvga_dac_read_many() and stdvga_dac_write_many() for
writing multiple dac palette entries.  Convert the stdvga_dac_read()
and stdvga_dac_write() low-level IO access functions in stdvgaio.c to
access just one color palette entry.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---
 src/std/vbe.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/std')

diff --git a/src/std/vbe.h b/src/std/vbe.h
index fe96f5ec..fddaa4fd 100644
--- a/src/std/vbe.h
+++ b/src/std/vbe.h
@@ -88,6 +88,13 @@ struct vbe_crtc_info {
     u8 reserved[40];
 } PACKED;
 
+struct vbe_palette_entry {
+    u8 blue;
+    u8 green;
+    u8 red;
+    u8 align;
+} PACKED;
+
 /* VBE Return Status Info */
 /* AL */
 #define VBE_RETURN_STATUS_SUPPORTED                      0x4F
-- 
cgit