[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>
#include <plat/flash.h>

void omap1_set_vpp(struct platform_device *pdev, 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>
706afdda	14	#include <plat/flash.h>
561b036a	15
667f390b	16	void omap1_set_vpp(struct platform_device *pdev, int enable)
561b036a LM	17	{
	18	static int count;
	19	u32 l;
	20
	21	if (enable) {
	22	if (count++ == 0) {
	23	l = omap_readl(EMIFS_CONFIG);
	24	l \|= OMAP_EMIFS_CONFIG_WP;
	25	omap_writel(l, EMIFS_CONFIG);
	26	}
	27	} else {
	28	if (count && (--count == 0)) {
	29	l = omap_readl(EMIFS_CONFIG);
	30	l &= ~OMAP_EMIFS_CONFIG_WP;
	31	omap_writel(l, EMIFS_CONFIG);
	32	}
	33	}
	34	}