Update of /cvsroot/blob/blob/src/blob
In directory usw-pr-cvs1:/tmp/cvs-serv29407
Modified Files:
h3600.c
Log Message:
Remember the EGPIO register cause it is write-only
Index: h3600.c
===================================================================
RCS file: /cvsroot/blob/blob/src/blob/h3600.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- h3600.c 2001/10/27 21:04:20 1.1
+++ h3600.c 2001/10/28 20:27:38 1.2
@@ -34,7 +34,7 @@
/* flash descriptor for H3600 flash */
-/* 2x Intel ??? (16MB) */
+/* 2x 28F640J3A (16MB) */
static flash_descriptor_t h3600_flash_descriptors[] =
{
{
@@ -61,8 +61,14 @@
/* H3600 EGPIO register */
-static u32 *egpio = (u32 *)0x49000000;
+static u32 *EGPIO = (u32 *)0x49000000;
+/* the EGPIO register is write only, so we need a shadow register to
+ * remember the state
+ */
+static u32 shadow_egpio;
+
+
/* taken from Linux include/asm-arm/arch-sa1100/h3600.h */
#define EGPIO_H3600_VPP_ON (1 << 0)
#define EGPIO_H3600_RS232_ON (1 << 7) /* UART3 transceiver force on. Active high. */
@@ -71,7 +77,8 @@
static void h3600_init_egpio(void)
{
/* enable RS232 tranceiver */
- *egpio = EGPIO_H3600_RS232_ON;
+ shadow_egpio = EGPIO_H3600_RS232_ON;
+ *EGPIO = shadow_egpio;
}
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