Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
[pandora-kernel.git] / arch / arm / mach-omap1 / flash.c
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 #include <plat/flash.h>
15
16 void omap1_set_vpp(struct platform_device *pdev, int enable)
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 }