bfin: Move gpio support for bf54x and bf60x into the generic driver folder.

The gpio spec for bf54x and bf60x differ a lot from the old gpio driver for bf5xx.
A lot of machine macros are used to accomodate both code in one gpio driver.
This patch split the old gpio driver and move new gpio2 support to the generic
gpio driver folder.

- To enable gpio2 driver, macro CONFIG_ADI_GPIO2 should be defined in the board's
config header file.
- The gpio2 driver supports bf54x, bf60x and future ADI processors, while the
older gpio driver supports bf50x, bf51x, bf52x, bf53x and bf561.
- All blackfin specific gpio function names are replaced by the generic gpio APIs.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>

1 files changed, 10 insertions, 52 deletions

diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h
index 05131b5e8b..58a6191107 100644
--- a/arch/blackfin/include/asm/gpio.h
+++ b/arch/blackfin/include/asm/gpio.h
@@ -7,6 +7,8 @@
 #ifndef __ARCH_BLACKFIN_GPIO_H__
 #define __ARCH_BLACKFIN_GPIO_H__
 
+#include <asm-generic/gpio.h>
+
 #define gpio_bank(x)	((x) >> 4)
 #define gpio_bit(x)	(1<<((x) & 0xF))
 #define gpio_sub_n(x)	((x) & 0xF)
@@ -65,10 +67,11 @@
 
 #define PERIPHERAL_USAGE 1
 #define GPIO_USAGE 0
+#define MAX_GPIOS MAX_BLACKFIN_GPIOS
 
 #ifndef __ASSEMBLY__
 
-#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x)
+#ifdef CONFIG_ADI_GPIO1
 void set_gpio_dir(unsigned, unsigned short);
 void set_gpio_inen(unsigned, unsigned short);
 void set_gpio_polar(unsigned, unsigned short);
@@ -140,61 +143,16 @@ struct gpio_port_t {
 };
 #endif
 
-#ifdef CONFIG_BFIN_GPIO_TRACK
-void bfin_gpio_labels(void);
-void bfin_gpio_free(unsigned gpio);
-#else
-#define bfin_gpio_labels()
-#define bfin_gpio_free(gpio)
-#define bfin_gpio_request(gpio, label) bfin_gpio_request(gpio)
-#define bfin_special_gpio_request(gpio, label) bfin_special_gpio_request(gpio)
-#endif
-
-#ifdef BFIN_SPECIAL_GPIO_BANKS
-void bfin_special_gpio_free(unsigned gpio);
-int bfin_special_gpio_request(unsigned gpio, const char *label);
+#ifdef ADI_SPECIAL_GPIO_BANKS
+void special_gpio_free(unsigned gpio);
+int special_gpio_request(unsigned gpio, const char *label);
 #endif
 
-int bfin_gpio_request(unsigned gpio, const char *label);
-int bfin_gpio_direction_input(unsigned gpio);
-int bfin_gpio_direction_output(unsigned gpio, int value);
-int bfin_gpio_get_value(unsigned gpio);
-void bfin_gpio_set_value(unsigned gpio, int value);
-void bfin_gpio_toggle_value(unsigned gpio);
-
-static inline int gpio_request(unsigned gpio, const char *label)
-{
-	return bfin_gpio_request(gpio, label);
-}
-
-static inline void gpio_free(unsigned gpio)
-{
-	return bfin_gpio_free(gpio);
-}
-
-static inline int gpio_direction_input(unsigned gpio)
-{
-	return bfin_gpio_direction_input(gpio);
-}
-
-static inline int gpio_direction_output(unsigned gpio, int value)
-{
-	return bfin_gpio_direction_output(gpio, value);
-}
-
-static inline int gpio_get_value(unsigned gpio)
-{
-	return bfin_gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned gpio, int value)
-{
-	return bfin_gpio_set_value(gpio, value);
-}
+void gpio_labels(void);
 
 static inline int gpio_is_valid(int number)
 {
-	return number >= 0 && number < MAX_BLACKFIN_GPIOS;
+	return number >= 0 && number < MAX_GPIOS;
 }
 
 #include <linux/ctype.h>
@@ -248,7 +206,7 @@ static inline int name_to_gpio(const char *name)
 }
 #define name_to_gpio(n) name_to_gpio(n)
 
-#define gpio_status() bfin_gpio_labels()
+#define gpio_status() gpio_labels()
 
 #endif /* __ASSEMBLY__ */