12 files changed, 58 insertions, 48 deletions

diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index ffee36910288..7312011a4211 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -229,6 +229,11 @@ inline int check_gpio(unsigned short gpio)
 }
 #endif
 
+void gpio_error(unsigned gpio)
+{
+        printk(KERN_ERR "bfin-gpio: GPIO %d wasn't requested!\n", gpio);
+}
+
 static void set_label(unsigned short ident, const char *label)
 {
 
@@ -1034,7 +1039,7 @@ EXPORT_SYMBOL(peripheral_free_list);
 * MODIFICATION HISTORY :
 **************************************************************/
 
-int gpio_request(unsigned short gpio, const char *label)
+int gpio_request(unsigned gpio, const char *label)
 {
         unsigned long flags;
 
@@ -1081,7 +1086,7 @@ int gpio_request(unsigned short gpio, const char *label)
 }
 EXPORT_SYMBOL(gpio_request);
 
-void gpio_free(unsigned short gpio)
+void gpio_free(unsigned gpio)
 {
         unsigned long flags;
 
@@ -1091,7 +1096,7 @@ void gpio_free(unsigned short gpio)
         local_irq_save(flags);
 
         if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
-                printk(KERN_ERR "bfin-gpio: GPIO %d wasn't reserved!\n", gpio);
+                gpio_error(gpio);
                 dump_stack();
                 local_irq_restore(flags);
                 return;
@@ -1107,34 +1112,47 @@ void gpio_free(unsigned short gpio)
 }
 EXPORT_SYMBOL(gpio_free);
 
+
 #ifdef BF548_FAMILY
-void gpio_direction_input(unsigned short gpio)
+int gpio_direction_input(unsigned gpio)
 {
         unsigned long flags;
 
-        BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+        if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+                gpio_error(gpio);
+                return -EINVAL;
+        }
+
 
         local_irq_save(flags);
         gpio_array[gpio_bank(gpio)]->port_dir_clear = gpio_bit(gpio);
         gpio_array[gpio_bank(gpio)]->port_inen |= gpio_bit(gpio);
         local_irq_restore(flags);
+
+        return 0;
 }
 EXPORT_SYMBOL(gpio_direction_input);
 
-void gpio_direction_output(unsigned short gpio)
+int gpio_direction_output(unsigned gpio, int value)
 {
         unsigned long flags;
 
-        BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+        if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+                gpio_error(gpio);
+                return -EINVAL;
+        }
 
         local_irq_save(flags);
         gpio_array[gpio_bank(gpio)]->port_inen &= ~gpio_bit(gpio);
+        gpio_set_value(gpio, value);
         gpio_array[gpio_bank(gpio)]->port_dir_set = gpio_bit(gpio);
         local_irq_restore(flags);
+
+        return 0;
 }
 EXPORT_SYMBOL(gpio_direction_output);
 
-void gpio_set_value(unsigned short gpio, unsigned short arg)
+void gpio_set_value(unsigned gpio, int arg)
 {
         if (arg)
                 gpio_array[gpio_bank(gpio)]->port_set = gpio_bit(gpio);
@@ -1144,7 +1162,7 @@ void gpio_set_value(unsigned short gpio, unsigned short arg)
 }
 EXPORT_SYMBOL(gpio_set_value);
 
-unsigned short gpio_get_value(unsigned short gpio)
+int gpio_get_value(unsigned gpio)
 {
         return (1 & (gpio_array[gpio_bank(gpio)]->port_data >> gpio_sub_n(gpio)));
 }
@@ -1152,31 +1170,42 @@ EXPORT_SYMBOL(gpio_get_value);
 
 #else
 
-void gpio_direction_input(unsigned short gpio)
+int gpio_direction_input(unsigned gpio)
 {
         unsigned long flags;
 
-        BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+        if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+                gpio_error(gpio);
+                return -EINVAL;
+        }
 
         local_irq_save(flags);
         gpio_bankb[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
         gpio_bankb[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
         AWA_DUMMY_READ(inen);
         local_irq_restore(flags);
+
+        return 0;
 }
 EXPORT_SYMBOL(gpio_direction_input);
 
-void gpio_direction_output(unsigned short gpio)
+int gpio_direction_output(unsigned gpio, int value)
 {
         unsigned long flags;
 
-        BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+        if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+                gpio_error(gpio);
+                return -EINVAL;
+        }
 
         local_irq_save(flags);
         gpio_bankb[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
+        gpio_set_value(gpio, value);
         gpio_bankb[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
         AWA_DUMMY_READ(dir);
         local_irq_restore(flags);
+
+        return 0;
 }
 EXPORT_SYMBOL(gpio_direction_output);
 
diff --git a/arch/blackfin/mach-bf527/boards/ezkit.c b/arch/blackfin/mach-bf527/boards/ezkit.c
index bc256811a5e3..6d70aae4cc9b 100644
--- a/arch/blackfin/mach-bf527/boards/ezkit.c
+++ b/arch/blackfin/mach-bf527/boards/ezkit.c
@@ -317,12 +317,7 @@ static struct resource sl811_hcd_resources[] = {
 void sl811_port_power(struct device *dev, int is_on)
 {
         gpio_request(CONFIG_USB_SL811_BFIN_GPIO_VBUS, "usb:SL811_VBUS");
-        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS);
-
-        if (is_on)
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 1);
-        else
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 0);
+        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS, is_on);
 }
 #endif
 
diff --git a/arch/blackfin/mach-bf537/boards/generic_board.c b/arch/blackfin/mach-bf537/boards/generic_board.c
index 1c97219a2ab5..3225b1588398 100644
--- a/arch/blackfin/mach-bf537/boards/generic_board.c
+++ b/arch/blackfin/mach-bf537/boards/generic_board.c
@@ -205,12 +205,8 @@ static struct resource sl811_hcd_resources[] = {
 void sl811_port_power(struct device *dev, int is_on)
 {
         gpio_request(CONFIG_USB_SL811_BFIN_GPIO_VBUS, "usb:SL811_VBUS");
-        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS);
+        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS, is_on);
 
-        if (is_on)
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 1);
-        else
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 0);
 }
 #endif
 
diff --git a/arch/blackfin/mach-bf537/boards/pnav10.c b/arch/blackfin/mach-bf537/boards/pnav10.c
index 23e10c7dab5b..4c4870590bd8 100644
--- a/arch/blackfin/mach-bf537/boards/pnav10.c
+++ b/arch/blackfin/mach-bf537/boards/pnav10.c
@@ -134,12 +134,8 @@ static struct resource sl811_hcd_resources[] = {
 void sl811_port_power(struct device *dev, int is_on)
 {
         gpio_request(CONFIG_USB_SL811_BFIN_GPIO_VBUS, "usb:SL811_VBUS");
-        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS);
+        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS, is_on);
 
-        if (is_on)
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 1);
-        else
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 0);
 }
 #endif
 
diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c
index 3e0ad04d8d75..37759ac7df2a 100644
--- a/arch/blackfin/mach-bf537/boards/stamp.c
+++ b/arch/blackfin/mach-bf537/boards/stamp.c
@@ -250,12 +250,7 @@ static struct resource sl811_hcd_resources[] = {
 void sl811_port_power(struct device *dev, int is_on)
 {
         gpio_request(CONFIG_USB_SL811_BFIN_GPIO_VBUS, "usb:SL811_VBUS");
-        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS);
-
-        if (is_on)
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 1);
-        else
-                gpio_set_value(CONFIG_USB_SL811_BFIN_GPIO_VBUS, 0);
+        gpio_direction_output(CONFIG_USB_SL811_BFIN_GPIO_VBUS, is_on);
 }
 #endif
 
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 1b7e54de0d76..c8e7427a0bc8 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -264,8 +264,7 @@ static int request_ports(struct bfin_bf54xfb_info *fbi)
                 }
         }
 
-        gpio_direction_output(disp);
-        gpio_set_value(disp, 1);
+        gpio_direction_output(disp, 1);
 
         return 0;
 }
diff --git a/include/asm-blackfin/gpio.h b/include/asm-blackfin/gpio.h
index 33ce98ef7e0f..7bba9b17654e 100644
--- a/include/asm-blackfin/gpio.h
+++ b/include/asm-blackfin/gpio.h
@@ -426,19 +426,19 @@ struct gpio_port_s {
 * MODIFICATION HISTORY :
 **************************************************************/
 
-int gpio_request(unsigned short, const char *);
-void gpio_free(unsigned short);
+int gpio_request(unsigned, const char *);
+void gpio_free(unsigned);
 
-void gpio_set_value(unsigned short gpio, unsigned short arg);
-unsigned short gpio_get_value(unsigned short gpio);
+void gpio_set_value(unsigned gpio, int arg);
+int gpio_get_value(unsigned gpio);
 
 #ifndef BF548_FAMILY
 #define gpio_get_value(gpio)            get_gpio_data(gpio)
 #define gpio_set_value(gpio, value)     set_gpio_data(gpio, value)
 #endif
 
-void gpio_direction_input(unsigned short gpio);
-void gpio_direction_output(unsigned short gpio);
+int gpio_direction_input(unsigned gpio);
+int gpio_direction_output(unsigned gpio, int value);
 
 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 #include <asm/irq.h>
diff --git a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
index 0b867e6a76c4..15dbc21eed8b 100644
--- a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
@@ -146,7 +146,7 @@ static void bfin_serial_hw_init(struct bfin_serial_port *uart)
 
         if (uart->rts_pin >= 0) {
                 gpio_request(uart->rts_pin, DRIVER_NAME);
-                gpio_direction_output(uart->rts_pin);
+                gpio_direction_output(uart->rts_pin, 0);
         }
 #endif
 }
diff --git a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
index 69b9f8e120e9..7871d4313f49 100644
--- a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
@@ -111,7 +111,7 @@ static void bfin_serial_hw_init(struct bfin_serial_port *uart)
         }
         if (uart->rts_pin >= 0) {
                 gpio_request(uart->rts_pin, DRIVER_NAME);
-                gpio_direction_input(uart->rts_pin);
+                gpio_direction_input(uart->rts_pin, 0);
         }
 #endif
 }
diff --git a/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h
index 6fb328f5186a..86e45c379838 100644
--- a/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h
@@ -146,7 +146,7 @@ static void bfin_serial_hw_init(struct bfin_serial_port *uart)
 
         if (uart->rts_pin >= 0) {
                 gpio_request(uart->rts_pin, DRIVER_NAME);
-                gpio_direction_output(uart->rts_pin);
+                gpio_direction_output(uart->rts_pin, 0);
         }
 #endif
 }
diff --git a/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h
index f21a1620e6bd..3770aa38ee9f 100644
--- a/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h
@@ -186,7 +186,7 @@ static void bfin_serial_hw_init(struct bfin_serial_port *uart)
 
         if (uart->rts_pin >= 0) {
                 gpio_request(uart->rts_pin, DRIVER_NAME);
-                gpio_direction_output(uart->rts_pin);
+                gpio_direction_output(uart->rts_pin, 0);
         }
 #endif
 }
diff --git a/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h
index 69b9f8e120e9..7871d4313f49 100644
--- a/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h
@@ -111,7 +111,7 @@ static void bfin_serial_hw_init(struct bfin_serial_port *uart)
         }
         if (uart->rts_pin >= 0) {
                 gpio_request(uart->rts_pin, DRIVER_NAME);
-                gpio_direction_input(uart->rts_pin);
+                gpio_direction_input(uart->rts_pin, 0);
         }
 #endif
 }