summaryrefslogtreecommitdiff
path: root/include/linux/mtd/latch-addr-flash.h
diff options
context:
space:
mode:
authorDavid Griego <dgriego@mvista.com>2010-11-30 15:32:05 +0530
committerDavid Woodhouse <David.Woodhouse@intel.com>2011-03-11 14:22:47 +0000
commitdcfb81d61da1367e52f7f7e3ceff0d0044c3c7ee (patch)
tree9558ad394a0f4939e57a31e5a47d18584cbb95bf /include/linux/mtd/latch-addr-flash.h
parenta321590246202f2598aca2f4ef63b992e8fc97ef (diff)
mtd: NOR flash driver for OMAP-L137/AM17x
OMAP-L137/AM17x has limited number of dedicated EMIFA address pins, enough to interface directly to an SDRAM. If a device such as an asynchronous flash needs to be attached to the EMIFA, then either GPIO pins or a chip select may be used to control the flash device's upper address lines. This patch adds support for the NOR flash on the OMAP-L137/ AM17x user interface daughter board using the latch-addr-flash MTD mapping driver which allows flashes to be partially physically addressed. The upper address lines are set by a board specific code which is a separate patch. Signed-off-by: David Griego <dgriego@mvista.com> Signed-off-by: Aleksey Makarov <amakarov@ru.mvista.com> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Savinay Dharmappa <savinay.dharmappa@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/mtd/latch-addr-flash.h')
-rw-r--r--include/linux/mtd/latch-addr-flash.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/mtd/latch-addr-flash.h b/include/linux/mtd/latch-addr-flash.h
new file mode 100644
index 000000000000..e94b8e128074
--- /dev/null
+++ b/include/linux/mtd/latch-addr-flash.h
@@ -0,0 +1,29 @@
+/*
+ * Interface for NOR flash driver whose high address lines are latched
+ *
+ * Copyright © 2008 MontaVista Software, Inc. <source@mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+#ifndef __LATCH_ADDR_FLASH__
+#define __LATCH_ADDR_FLASH__
+
+struct map_info;
+struct mtd_partition;
+
+struct latch_addr_flash_data {
+ unsigned int width;
+ unsigned int size;
+
+ int (*init)(void *data, int cs);
+ void (*done)(void *data);
+ void (*set_window)(unsigned long offset, void *data);
+ void *data;
+
+ unsigned int nr_parts;
+ struct mtd_partition *parts;
+};
+
+#endif