[deliverable/linux.git] / arch / arm / mach-omap1 / flash.c

/*
 * Flash support for OMAP1
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>

#include <plat/io.h>
#include <plat/tc.h>

void omap1_set_vpp(struct map_info *map, int enable)
{
	static int count;
	u32 l;

	if (enable) {
		if (count++ == 0) {
			l = omap_readl(EMIFS_CONFIG);
			l |= OMAP_EMIFS_CONFIG_WP;
			omap_writel(l, EMIFS_CONFIG);
		}
	} else {
		if (count && (--count == 0)) {
			l = omap_readl(EMIFS_CONFIG);
			l &= ~OMAP_EMIFS_CONFIG_WP;
			omap_writel(l, EMIFS_CONFIG);
		}
	}
}
Commit	Line	Data
561b036a LM	1	/*
	2	* Flash support for OMAP1
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8
	9	#include <linux/mtd/mtd.h>
	10	#include <linux/mtd/map.h>
	11
	12	#include <plat/io.h>
	13	#include <plat/tc.h>
	14
	15	void omap1_set_vpp(struct map_info *map, int enable)
	16	{
	17	static int count;
	18	u32 l;
	19
	20	if (enable) {
	21	if (count++ == 0) {
	22	l = omap_readl(EMIFS_CONFIG);
	23	l \|= OMAP_EMIFS_CONFIG_WP;
	24	omap_writel(l, EMIFS_CONFIG);
	25	}
	26	} else {
	27	if (count && (--count == 0)) {
	28	l = omap_readl(EMIFS_CONFIG);
	29	l &= ~OMAP_EMIFS_CONFIG_WP;
	30	omap_writel(l, EMIFS_CONFIG);
	31	}
	32	}
	33	}