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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2006-08-09 10:54:44 +0200
committerJosh Boyer <jwboyer@gmail.com>2006-08-16 20:13:06 -0500
commit5b0c5c2c0d04c29f85abb485378ba5476c7aeec2 (patch)
treec83b1e4f3947b23c24b6cacb2cc1ac8f2f0cd012 /drivers
parent0b6c0bb3f9621b128011bcd5f65047c73afdde3b (diff)
downloadop-kernel-dev-5b0c5c2c0d04c29f85abb485378ba5476c7aeec2.zip
op-kernel-dev-5b0c5c2c0d04c29f85abb485378ba5476c7aeec2.tar.gz
MTD: Convert Atmel PRI information to AMD format
Atmel flash chips don't have PRI information in the same format as AMD flash chips. This patch installs a fixup for all Atmel chips that converts the relevant PRI fields into AMD format. Only the fields that are actually used by the command set is actually converted. The rest are initialized to zero (which should be safe) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0002.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 9885726..8901c44 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -161,6 +161,26 @@ static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
}
}
+/* Atmel chips don't use the same PRI format as AMD chips */
+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+ struct cfi_pri_atmel atmel_pri;
+
+ memcpy(&atmel_pri, extp, sizeof(atmel_pri));
+ memset(extp + 5, 0, sizeof(*extp) - 5);
+
+ if (atmel_pri.Features & 0x02)
+ extp->EraseSuspend = 2;
+
+ if (atmel_pri.BottomBoot)
+ extp->TopBottom = 2;
+ else
+ extp->TopBottom = 3;
+}
+
static void fixup_use_secsi(struct mtd_info *mtd, void *param)
{
/* Setup for chips with a secsi area */
@@ -192,6 +212,7 @@ static struct cfi_fixup cfi_fixup_table[] = {
#if !FORCE_WORD_WRITE
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
#endif
+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
{ 0, 0, NULL, NULL }
};
static struct cfi_fixup jedec_fixup_table[] = {
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