[Blackfin] arch: Fix BUG gpio_direction_output API is not compatitable with GENERIC_GPIO API interface

signef-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

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);
 

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
 

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
 

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
 

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
 

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;
 }

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>

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
 }

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
 }

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
 }

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
 }

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
 }