cirrusfb: fix 16bpp modes (3b921832) · Commits · 戴 / test

The 16bpp mode did not work on the Cirrus cards as the visual type was set to DIRECTCOLOR instead of TRUECOLOR. The Alpine family used one incorrect register setting so this 16bpp modes generated wrong horizontal frequency. Signed-off-by:

Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/cirrusfb.c

+2 −5

Original line number	Diff line number	Diff line
		@@ -657,7 +657,7 @@ static int cirrusfb_decode_var(const struct fb_var_screeninfo *var,
		case 16:
		case 32:
		info->fix.line_length = var->xres_virtual * maxclockidx;
		info->fix.visual = FB_VISUAL_DIRECTCOLOR;
		info->fix.visual = FB_VISUAL_TRUECOLOR;
		break;

		default:
		@@ -1178,10 +1178,7 @@ static int cirrusfb_set_par_foo(struct fb_info *info)

		case BT_ALPINE:
		DPRINTK(" (for GD543x)\n");
		if (var->xres >= 1024)
		vga_wseq(regbase, CL_SEQR7, 0xa7);
		else
		vga_wseq(regbase, CL_SEQR7, 0xa3);
		cirrusfb_set_mclk(cinfo, regs.mclk, regs.divMCLK);
		break;

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