linux-kernel - Re: [PATCH] vfb: fix video mode and line

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Date:   Wed, 20 Dec 2017 14:53:00 +0000
From:   "Pieter \"PoroCYon\" Sluys" <pcy@...ional.shitposting.agency>
To:     linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] vfb: fix video mode and line_length being set when loaded

Geert Uytterhoeven:
> Please add your "Signed-off-by", cfr.
> Documentation/process/submitting-patches.rst.

Sorry I knew I would've messed up *something*.

> You can drop the tests for 2 and 4, as these are no longer used by the driver.

Done that.

Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Pieter "PoroCYon" Sluys <pcy@...ional.shitposting.agency>

---
 drivers/video/fbdev/vfb.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/video/fbdev/vfb.c b/drivers/video/fbdev/vfb.c
index da653a080394..5fb360283c6b 100644
--- a/drivers/video/fbdev/vfb.c
+++ b/drivers/video/fbdev/vfb.c
@@ -239,8 +239,23 @@ static int vfb_check_var(struct fb_var_screeninfo *var,
  */
 static int vfb_set_par(struct fb_info *info)
 {
+	switch (info->var.bits_per_pixel) {
+		case 1:
+			info->fix.visual = FB_VISUAL_MONO01;
+			break;
+		case 8:
+			info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+			break;
+		case 16:
+		case 24:
+		case 32:
+			info->fix.visual = FB_VISUAL_TRUECOLOR;
+			break;
+	}
+
 	info->fix.line_length = get_line_length(info->var.xres_virtual,
 						info->var.bits_per_pixel);
+
 	return 0;
 }

@@ -450,6 +465,8 @@ static int vfb_probe(struct platform_device *dev)
 		goto err2;
 	platform_set_drvdata(dev, info);

+	vfb_set_par(info);
+
 	fb_info(info, "Virtual frame buffer device, using %ldK of video memory\n",
 		videomemorysize >> 10);
 	return 0;
--
2.15.1


View attachment "README" of type "text/plain" (166 bytes)

View attachment "vfb.c.patch" of type "text/x-patch" (1047 bytes)