CRIS v32: Minor fixes for io.h

- Shorten include paths for machine dependent header files.
- Add volatile to hardeware register pointers.
- Add spinlocks around critical region.
- Expand macros for handling of leds.

1 files changed, 55 insertions, 15 deletions

diff --git a/include/asm-cris/arch-v32/io.h b/include/asm-cris/arch-v32/io.h
index 5efe4d949001..65a287953f50 100644
--- a/include/asm-cris/arch-v32/io.h
+++ b/include/asm-cris/arch-v32/io.h
@@ -1,9 +1,10 @@
 #ifndef _ASM_ARCH_CRIS_IO_H
 #define _ASM_ARCH_CRIS_IO_H
 
-#include <asm/arch/hwregs/reg_map.h>
-#include <asm/arch/hwregs/reg_rdwr.h>
-#include <asm/arch/hwregs/gio_defs.h>
+#include <linux/spinlock.h>
+#include <hwregs/reg_map.h>
+#include <hwregs/reg_rdwr.h>
+#include <hwregs/gio_defs.h>
 
 enum crisv32_io_dir
 {
@@ -13,10 +14,11 @@ enum crisv32_io_dir
 
 struct crisv32_ioport
 {
-  unsigned long* oe;
-  unsigned long* data;
-  unsigned long* data_in;
+  volatile unsigned long *oe;
+  volatile unsigned long *data;
+  volatile unsigned long *data_in;
   unsigned int pin_count;
+  spinlock_t lock;
 };
 
 struct crisv32_iopin
@@ -34,22 +36,37 @@ extern struct crisv32_iopin crisv32_led2_red;
 extern struct crisv32_iopin crisv32_led3_green;
 extern struct crisv32_iopin crisv32_led3_red;
 
+extern struct crisv32_iopin crisv32_led_net0_green;
+extern struct crisv32_iopin crisv32_led_net0_red;
+extern struct crisv32_iopin crisv32_led_net1_green;
+extern struct crisv32_iopin crisv32_led_net1_red;
+
 static inline void crisv32_io_set(struct crisv32_iopin* iopin,
                            int val)
 {
+        long flags;
+        spin_lock_irqsave(&iopin->port->lock, flags);
+
         if (val)
                 *iopin->port->data |= iopin->bit;
         else
                 *iopin->port->data &= ~iopin->bit;
+
+        spin_unlock_irqrestore(&iopin->port->lock, flags);
 }
 
 static inline void crisv32_io_set_dir(struct crisv32_iopin* iopin,
                                enum crisv32_io_dir dir)
 {
+        long flags;
+        spin_lock_irqsave(&iopin->port->lock, flags);
+
         if (dir == crisv32_io_dir_in)
                 *iopin->port->oe &= ~iopin->bit;
         else
                 *iopin->port->oe |= iopin->bit;
+
+        spin_unlock_irqrestore(&iopin->port->lock, flags);
 }
 
 static inline int crisv32_io_rd(struct crisv32_iopin* iopin)
@@ -60,28 +77,51 @@ static inline int crisv32_io_rd(struct crisv32_iopin* iopin)
 int crisv32_io_get(struct crisv32_iopin* iopin,
                    unsigned int port, unsigned int pin);
 int crisv32_io_get_name(struct crisv32_iopin* iopin,
-                         char* name);
+                        const char *name);
 
 #define LED_OFF    0x00
 #define LED_GREEN  0x01
 #define LED_RED    0x02
 #define LED_ORANGE (LED_GREEN | LED_RED)
 
-#define LED_NETWORK_SET(x)                          \
-        do {                                        \
-                LED_NETWORK_SET_G((x) & LED_GREEN); \
-                LED_NETWORK_SET_R((x) & LED_RED);   \
+#if (defined(CONFIG_ETRAX_NBR_LED_GRP_ONE) || defined(CONFIG_ETRAX_NBR_LED_GRP_TWO))
+#define LED_NETWORK_GRP0_SET(x)                          \
+        do {                                             \
+                LED_NETWORK_GRP0_SET_G((x) & LED_GREEN); \
+                LED_NETWORK_GRP0_SET_R((x) & LED_RED);   \
         } while (0)
+#else
+#define LED_NETWORK_GRP0_SET(x) while (0) {}
+#endif
+
+#define LED_NETWORK_GRP0_SET_G(x) \
+        crisv32_io_set(&crisv32_led_net0_green, !(x));
+
+#define LED_NETWORK_GRP0_SET_R(x) \
+        crisv32_io_set(&crisv32_led_net0_red, !(x));
+
+#if defined(CONFIG_ETRAX_NBR_LED_GRP_TWO)
+#define LED_NETWORK_GRP1_SET(x)                          \
+        do {                                             \
+                LED_NETWORK_GRP1_SET_G((x) & LED_GREEN); \
+                LED_NETWORK_GRP1_SET_R((x) & LED_RED);   \
+        } while (0)
+#else
+#define LED_NETWORK_GRP1_SET(x) while (0) {}
+#endif
+
+#define LED_NETWORK_GRP1_SET_G(x) \
+        crisv32_io_set(&crisv32_led_net1_green, !(x));
+
+#define LED_NETWORK_GRP1_SET_R(x) \
+        crisv32_io_set(&crisv32_led_net1_red, !(x));
+
 #define LED_ACTIVE_SET(x)                           \
         do {                                        \
                 LED_ACTIVE_SET_G((x) & LED_GREEN);  \
                 LED_ACTIVE_SET_R((x) & LED_RED);    \
         } while (0)
 
-#define LED_NETWORK_SET_G(x) \
-        crisv32_io_set(&crisv32_led1_green, !(x));
-#define LED_NETWORK_SET_R(x) \
-        crisv32_io_set(&crisv32_led1_red, !(x));
 #define LED_ACTIVE_SET_G(x) \
         crisv32_io_set(&crisv32_led2_green, !(x));
 #define LED_ACTIVE_SET_R(x) \