linux-kernel - [PATCH 08/10] video: fbdev: atari: Fix VGA modes

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Date:   Mon, 11 Jul 2022 17:50:32 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Helge Deller <deller@....de>
Cc:     Michael Schmitz <schmitzmic@...il.com>,
        Jonathan Corbet <corbet@....net>, linux-fbdev@...r.kernel.org,
        linux-doc@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH 08/10] video: fbdev: atari: Fix VGA modes

The pixclock values in the vga and vga70 modes are wrong, as they should
use the 25.175 MHz clock instead of the 32 MHz clock.
Swap the left and right margins to match f25.{right,left} (struct
pixel_clock declares them in a different order), and update the hsync
lengths to match what the driver programs by default.
Correct the (wrong) floating-point vrefresh value for the vga mode.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/video/fbdev/atafb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/atafb.c b/drivers/video/fbdev/atafb.c
index 528478f6f30857ef..46a00e0ad5e785ac 100644
--- a/drivers/video/fbdev/atafb.c
+++ b/drivers/video/fbdev/atafb.c
@@ -494,11 +494,11 @@ static struct fb_videomode atafb_modedb[] __initdata = {
 
 	{
 		/* 640x480, 31 kHz, 60 Hz (VGA) */
-		"vga", 63.5, 640, 480, 32000, 18, 42, 31, 11, 96, 3,
+		"vga", 60, 640, 480, 39721, 42, 18, 31, 11, 100, 3,
 		0, FB_VMODE_NONINTERLACED
 	}, {
 		/* 640x400, 31 kHz, 70 Hz (VGA) */
-		"vga70", 70, 640, 400, 32000, 18, 42, 31, 11, 96, 3,
+		"vga70", 70, 640, 400, 39721, 42, 18, 31, 11, 100, 3,
 		FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED
 	},
 
-- 
2.25.1