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Commit 06892481 authored by Shashank Mittal's avatar Shashank Mittal Committed by Channagoud Kadabi
Browse files

vfb: Support vfb configuration from kernel cmdline 



Add support to configure mode_option, framebuffer size and bpp
from kernel command line.

Change-Id: I2f08ed3851db4008569f1c77a195e46931674919
Signed-off-by: default avatarShashank Mittal <mittals@codeaurora.org>
Signed-off-by: default avatarDavid Brown <davidb@codeaurora.org>
Signed-off-by: default avatarBruce Levy <blevy@codeaurora.org>
parent 6c0da8be

drivers/video/fbdev/vfb.c

+11 −7
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ static void *videomemory; 
static u_long videomemorysize = VIDEOMEMSIZE;

module_param(videomemorysize, ulong, 0);

MODULE_PARM_DESC(videomemorysize, "RAM available to frame buffer (in bytes)");

static int bpp = 8;

module_param(bpp, int, 0644);



static char *mode_option = NULL;

module_param(mode_option, charp, 0);
@@ -397,7 +399,13 @@ static int __init vfb_setup(char *options) 
		/* Test disable for backwards compatibility */

		if (!strcmp(this_opt, "disable"))

			vfb_enable = 0;

		else

		else if (!strcmp(this_opt, "bpp=")) {

			if (kstrtoint(this_opt + 4, 0, &bpp) < 0)

				bpp = 8;

		} else if (!strcmp(this_opt, "memsize=")) {

			if (kstrtoul(this_opt + 8, 0, &videomemorysize) < 0)

				videomemorysize = VIDEOMEMSIZE;

		} else

			mode_option = this_opt;

	}

	return 1;
@@ -427,12 +435,8 @@ static int vfb_probe(struct platform_device *dev) 
	info->screen_base = (char __iomem *)videomemory;

	info->fbops = &vfb_ops;



	if (!fb_find_mode(&info->var, info, mode_option,

			  NULL, 0, &vfb_default, 8)){

		fb_err(info, "Unable to find usable video mode.\n");

		retval = -EINVAL;

		goto err1;

	}

	retval = fb_find_mode(&info->var, info, mode_option,

			      NULL, 0, NULL, bpp);



	vfb_fix.smem_start = (unsigned long) videomemory;

	vfb_fix.smem_len = videomemorysize;