From: Antonino A. Daplas <adaplas@gmail.com>
Date: Wed, 30 Nov 2005 03:34:43 +0000 (-0800)
Subject: [PATCH] fbdev: cirrusfb: Driver cleanup and bug fixes
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=49d5c7b08713c3a482d62b5a0ad41b4ec32905a5;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] fbdev: cirrusfb: Driver cleanup and bug fixes

- pseudo_palette is only 16 entries long

- the pseudo_palette, if using the generic drawing functions, must always be
  u32 regardless of bpp

- the fillrect accelerator is using region->color regardless of the visual.
  region->color is the index to the pseudo_palette if visual is truecolor

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/video/cirrusfb.c b/drivers/video/cirrusfb.c
index 2858c5c8ba3..e0dbdfc0c8b 100644
--- a/drivers/video/cirrusfb.c
+++ b/drivers/video/cirrusfb.c
@@ -404,7 +404,7 @@ struct cirrusfb_info {
 	struct cirrusfb_regs currentmode;
 	int blank_mode;
 
-	u32	pseudo_palette[17];
+	u32	pseudo_palette[16];
 	struct { u8 red, green, blue, pad; } palette[256];
 
 #ifdef CONFIG_ZORRO
@@ -1603,14 +1603,14 @@ static int cirrusfb_setcolreg (unsigned regno, unsigned red, unsigned green,
 
 		switch (info->var.bits_per_pixel) {
 			case 8:
-				((u8*)(info->pseudo_palette))[regno] = v;
+				cinfo->pseudo_palette[regno] = v;
 				break;
 			case 16:
-				((u16*)(info->pseudo_palette))[regno] = v;
+				cinfo->pseudo_palette[regno] = v;
 				break;
 			case 24:
 			case 32:
-				((u32*)(info->pseudo_palette))[regno] = v;
+				cinfo->pseudo_palette[regno] = v;
 				break;
 		}
 		return 0;
@@ -2020,18 +2020,21 @@ static void cirrusfb_prim_fillrect(struct cirrusfb_info *cinfo,
 				   const struct fb_fillrect *region)
 {
 	int m; /* bytes per pixel */
+	u32 color = (cinfo->info->fix.visual == FB_VISUAL_TRUECOLOR) ?
+		cinfo->pseudo_palette[region->color] : region->color;
+
 	if(cinfo->info->var.bits_per_pixel == 1) {
 		cirrusfb_RectFill(cinfo->regbase, cinfo->info->var.bits_per_pixel,
 				  region->dx / 8, region->dy,
 				  region->width / 8, region->height,
-				  region->color,
+				  color,
 				  cinfo->currentmode.line_length);
 	} else {
 		m = ( cinfo->info->var.bits_per_pixel + 7 ) / 8;
 		cirrusfb_RectFill(cinfo->regbase, cinfo->info->var.bits_per_pixel,
 				  region->dx * m, region->dy,
 				  region->width * m, region->height,
-				  region->color,
+				  color,
 				  cinfo->currentmode.line_length);
 	}
 	return;