Support different targets. (Openmoko GTA01/02 with Dbgv3, soon c2ben.)

- f32x/Makefile: added support for building for different targets (for now,
  just TARGET=om)
- f32x/c2-drv.h: interface for C2 drivers
- f32x/c2-om.c: updated title
- f32x/c2-om.c: renamed all c2_* to om_* and made them "static"
- f32x/c2-om.c (c2_om): driver operations
- f32x/c2.c: call driver operations
- f32x/c2.h: moved protocol constants to c2-drv.h

f32x/c2-om.c

@@ -1,8 +1,8 @@
 /*
- * f32x/c2.c - Basic C2 messages
+ * f32x/c2-om.c - Basic C2 messages, driver for Openmoko GTA01/GTA02+DebugV3
  *
- * Written 2008 by Werner Almesberger
- * Copyright 2008 Werner Almesberger
+ * Written 2008, 2010 by Werner Almesberger
+ * Copyright 2008, 2010 Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -15,7 +15,7 @@
 #include <unistd.h>
 
 #include "gpio.h"
-#include "c2.h"
+#include "c2-drv.h"
 
 
 /*
@@ -64,7 +64,7 @@ static uint32_t c2_recv(int bits)
 /* ----- C2 Register read/write -------------------------------------------- */
 
 
-void c2_addr_write(uint8_t addr)
+static void om_addr_write(uint8_t addr)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -75,7 +75,7 @@ void c2_addr_write(uint8_t addr)
 }
 
 
-uint8_t c2_addr_read(void)
+static uint8_t om_addr_read(void)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -86,7 +86,7 @@ uint8_t c2_addr_read(void)
 }
 
 
-void c2_data_write(uint32_t data, int bytes)
+static void om_data_write(uint32_t data, int bytes)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -99,7 +99,7 @@ void c2_data_write(uint32_t data, int bytes)
 }
 
 
-uint32_t c2_data_read(int bytes)
+static uint32_t om_data_read(int bytes)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -115,7 +115,7 @@ uint32_t c2_data_read(int bytes)
 /* ----- C2 initialization ------------------------------------------------- */
 
 
-void c2_init(void)
+static void om_init(void)
 {
     gpio_init();
     gpio_input(C2D);
@@ -127,7 +127,7 @@ void c2_init(void)
 }
 
 
-void c2_reset(void)
+static void om_reset(void)
 {
     gpio_input(C2D);
     gpio_low(C2CK);
@@ -136,3 +136,16 @@ void c2_reset(void)
     gpio_output(C2CK);
     gpio_high(C2CK);
 }
+
+
+/* ----- Operations -------------------------------------------------------- */
+
+
+struct c2_ops c2_om = {
+	.init		= om_init,
+	.reset		= om_reset,
+	.addr_write	= om_addr_write,
+	.addr_read	= om_addr_read,
+	.data_write	= om_data_write,
+	.data_read	= om_data_read,
+};