gpio: atmel_pio4: Move PIO4 definitions to head file

In order to make these PIO4 definitions shared with AT91 PIO4
pinctrl driver, move them from the existing gpio driver to the
head file, and rephrase them.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/mach-at91/include/mach/atmel_pio4.h

@@ -29,6 +29,41 @@ struct atmel_pio4_port {
 
 #endif
 
+/*
+ * PIO Configuration Register Fields
+ */
+#define ATMEL_PIO_CFGR_FUNC_MASK	GENMASK(2, 0)
+#define ATMEL_PIO_CFGR_FUNC_GPIO	(0x0 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_A	(0x1 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_B	(0x2 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_C	(0x3 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_D	(0x4 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_E	(0x5 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_F	(0x6 << 0)
+#define ATMEL_PIO_CFGR_FUNC_PERIPH_G	(0x7 << 0)
+#define ATMEL_PIO_DIR_MASK		BIT(8)
+#define ATMEL_PIO_PUEN_MASK		BIT(9)
+#define ATMEL_PIO_PDEN_MASK		BIT(10)
+#define ATMEL_PIO_IFEN_MASK		BIT(12)
+#define ATMEL_PIO_IFSCEN_MASK		BIT(13)
+#define ATMEL_PIO_OPD_MASK		BIT(14)
+#define ATMEL_PIO_SCHMITT_MASK		BIT(15)
+#define ATMEL_PIO_CFGR_EVTSEL_MASK	GENMASK(26, 24)
+#define ATMEL_PIO_CFGR_EVTSEL_FALLING	(0 << 24)
+#define ATMEL_PIO_CFGR_EVTSEL_RISING	(1 << 24)
+#define ATMEL_PIO_CFGR_EVTSEL_BOTH	(2 << 24)
+#define ATMEL_PIO_CFGR_EVTSEL_LOW	(3 << 24)
+#define ATMEL_PIO_CFGR_EVTSEL_HIGH	(4 << 24)
+
+#define ATMEL_PIO_NPINS_PER_BANK	32
+#define ATMEL_PIO_BANK(pin_id)		(pin_id / ATMEL_PIO_NPINS_PER_BANK)
+#define ATMEL_PIO_LINE(pin_id)		(pin_id % ATMEL_PIO_NPINS_PER_BANK)
+#define ATMEL_PIO_BANK_OFFSET		0x40
+
+#define ATMEL_GET_PIN_NO(pinfunc)	((pinfunc) & 0xff)
+#define ATMEL_GET_PIN_FUNC(pinfunc)	((pinfunc >> 16) & 0xf)
+#define ATMEL_GET_PIN_IOSET(pinfunc)	((pinfunc >> 20) & 0xf)
+
 #define AT91_PIO_PORTA		0x0
 #define AT91_PIO_PORTB		0x1
 #define AT91_PIO_PORTC		0x2

drivers/gpio/atmel_pio4.c

@@ -12,41 +12,6 @@
 #include <mach/gpio.h>
 #include <mach/atmel_pio4.h>
 
-#define ATMEL_PIO4_PINS_PER_BANK	32
-
-/*
- * Register Field Definitions
- */
-#define ATMEL_PIO4_CFGR_FUNC	(0x7 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_GPIO	(0x0 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_A	(0x1 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_B	(0x2 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_C	(0x3 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_D	(0x4 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_E	(0x5 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_F	(0x6 << 0)
-#define		ATMEL_PIO4_CFGR_FUNC_PERIPH_G	(0x7 << 0)
-#define ATMEL_PIO4_CFGR_DIR	(0x1 << 8)
-#define ATMEL_PIO4_CFGR_PUEN	(0x1 << 9)
-#define ATMEL_PIO4_CFGR_PDEN	(0x1 << 10)
-#define ATMEL_PIO4_CFGR_IFEN	(0x1 << 12)
-#define ATMEL_PIO4_CFGR_IFSCEN	(0x1 << 13)
-#define ATMEL_PIO4_CFGR_OPD	(0x1 << 14)
-#define ATMEL_PIO4_CFGR_SCHMITT	(0x1 << 15)
-#define ATMEL_PIO4_CFGR_DRVSTR	(0x3 << 16)
-#define		ATMEL_PIO4_CFGR_DRVSTR_LOW0	(0x0 << 16)
-#define		ATMEL_PIO4_CFGR_DRVSTR_LOW1	(0x1 << 16)
-#define		ATMEL_PIO4_CFGR_DRVSTR_MEDIUM	(0x2 << 16)
-#define		ATMEL_PIO4_CFGR_DRVSTR_HIGH	(0x3 << 16)
-#define ATMEL_PIO4_CFGR_EVTSEL	(0x7 << 24)
-#define		ATMEL_PIO4_CFGR_EVTSEL_FALLING	(0x0 << 24)
-#define		ATMEL_PIO4_CFGR_EVTSEL_RISING	(0x1 << 24)
-#define		ATMEL_PIO4_CFGR_EVTSEL_BOTH	(0x2 << 24)
-#define		ATMEL_PIO4_CFGR_EVTSEL_LOW	(0x3 << 24)
-#define		ATMEL_PIO4_CFGR_EVTSEL_HIGH	(0x4 << 24)
-#define ATMEL_PIO4_CFGR_PCFS	(0x1 << 29)
-#define ATMEL_PIO4_CFGR_ICFS	(0x1 << 30)
-
 static struct atmel_pio4_port *atmel_pio4_port_base(u32 port)
 {
 	struct atmel_pio4_port *base = NULL;
@@ -79,7 +44,7 @@ static int atmel_pio4_config_io_func(u32 port, u32 pin,
 	struct atmel_pio4_port *port_base;
 	u32 reg, mask;
 
-	if (pin >= ATMEL_PIO4_PINS_PER_BANK)
+	if (pin >= ATMEL_PIO_NPINS_PER_BANK)
 		return -ENODEV;
 
 	port_base = atmel_pio4_port_base(port);
@@ -88,7 +53,7 @@ static int atmel_pio4_config_io_func(u32 port, u32 pin,
 
 	mask = 1 << pin;
 	reg = func;
-	reg |= use_pullup ? ATMEL_PIO4_CFGR_PUEN : 0;
+	reg |= use_pullup ? ATMEL_PIO_PUEN_MASK : 0;
 
 	writel(mask, &port_base->mskr);
 	writel(reg, &port_base->cfgr);
@@ -99,56 +64,56 @@ static int atmel_pio4_config_io_func(u32 port, u32 pin,
 int atmel_pio4_set_gpio(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_GPIO,
+					 ATMEL_PIO_CFGR_FUNC_GPIO,
 					 use_pullup);
 }
 
 int atmel_pio4_set_a_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_A,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_A,
 					 use_pullup);
 }
 
 int atmel_pio4_set_b_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_B,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_B,
 					 use_pullup);
 }
 
 int atmel_pio4_set_c_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_C,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_C,
 					 use_pullup);
 }
 
 int atmel_pio4_set_d_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_D,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_D,
 					 use_pullup);
 }
 
 int atmel_pio4_set_e_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_E,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_E,
 					 use_pullup);
 }
 
 int atmel_pio4_set_f_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_F,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_F,
 					 use_pullup);
 }
 
 int atmel_pio4_set_g_periph(u32 port, u32 pin, u32 use_pullup)
 {
 	return atmel_pio4_config_io_func(port, pin,
-					 ATMEL_PIO4_CFGR_FUNC_PERIPH_G,
+					 ATMEL_PIO_CFGR_FUNC_PERIPH_G,
 					 use_pullup);
 }
 
@@ -157,7 +122,7 @@ int atmel_pio4_set_pio_output(u32 port, u32 pin, u32 value)
 	struct atmel_pio4_port *port_base;
 	u32 reg, mask;
 
-	if (pin >= ATMEL_PIO4_PINS_PER_BANK)
+	if (pin >= ATMEL_PIO_NPINS_PER_BANK)
 		return -ENODEV;
 
 	port_base = atmel_pio4_port_base(port);
@@ -165,7 +130,7 @@ int atmel_pio4_set_pio_output(u32 port, u32 pin, u32 value)
 		return -ENODEV;
 
 	mask = 0x01 << pin;
-	reg = ATMEL_PIO4_CFGR_FUNC_GPIO | ATMEL_PIO4_CFGR_DIR;
+	reg = ATMEL_PIO_CFGR_FUNC_GPIO | ATMEL_PIO_DIR_MASK;
 
 	writel(mask, &port_base->mskr);
 	writel(reg, &port_base->cfgr);
@@ -183,7 +148,7 @@ int atmel_pio4_get_pio_input(u32 port, u32 pin)
 	struct atmel_pio4_port *port_base;
 	u32 reg, mask;
 
-	if (pin >= ATMEL_PIO4_PINS_PER_BANK)
+	if (pin >= ATMEL_PIO_NPINS_PER_BANK)
 		return -ENODEV;
 
 	port_base = atmel_pio4_port_base(port);
@@ -191,7 +156,7 @@ int atmel_pio4_get_pio_input(u32 port, u32 pin)
 		return -ENODEV;
 
 	mask = 0x01 << pin;
-	reg = ATMEL_PIO4_CFGR_FUNC_GPIO;
+	reg = ATMEL_PIO_CFGR_FUNC_GPIO;
 
 	writel(mask, &port_base->mskr);
 	writel(reg, &port_base->cfgr);
@@ -205,7 +170,7 @@ static int atmel_pio4_direction_input(struct udevice *dev, unsigned offset)
 	struct at91_port_platdata *plat = dev_get_platdata(dev);
 	struct atmel_pio4_port *port_base = (atmel_pio4_port *)plat->base_addr;
 	u32 mask = 0x01 << offset;
-	u32 reg = ATMEL_PIO4_CFGR_FUNC_GPIO;
+	u32 reg = ATMEL_PIO_CFGR_FUNC_GPIO;
 
 	writel(mask, &port_base->mskr);
 	writel(reg, &port_base->cfgr);
@@ -219,7 +184,7 @@ static int atmel_pio4_direction_output(struct udevice *dev,
 	struct at91_port_platdata *plat = dev_get_platdata(dev);
 	struct atmel_pio4_port *port_base = (atmel_pio4_port *)plat->base_addr;
 	u32 mask = 0x01 << offset;
-	u32 reg = ATMEL_PIO4_CFGR_FUNC_GPIO | ATMEL_PIO4_CFGR_DIR;
+	u32 reg = ATMEL_PIO_CFGR_FUNC_GPIO | ATMEL_PIO_DIR_MASK;
 
 	writel(mask, &port_base->mskr);
 	writel(reg, &port_base->cfgr);
@@ -265,7 +230,7 @@ static int atmel_pio4_get_function(struct udevice *dev, unsigned offset)
 	writel(mask, &port_base->mskr);
 
 	return (readl(&port_base->cfgr) &
-		ATMEL_PIO4_CFGR_DIR) ? GPIOF_OUTPUT : GPIOF_INPUT;
+		ATMEL_PIO_DIR_MASK) ? GPIOF_OUTPUT : GPIOF_INPUT;
 }
 
 static const struct dm_gpio_ops atmel_pio4_ops = {
@@ -282,7 +247,7 @@ static int atmel_pio4_probe(struct udevice *dev)
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 
 	uc_priv->bank_name = plat->bank_name;
-	uc_priv->gpio_count = ATMEL_PIO4_PINS_PER_BANK;
+	uc_priv->gpio_count = ATMEL_PIO_NPINS_PER_BANK;
 
 	return 0;
 }