[U-Boot] [PATCH v4 1/5] gpio: atmel_pio4: Move PIO4 definitions to head file
Wenyou Yang
wenyou.yang at atmel.com
Tue Jun 7 09:24:18 CEST 2016
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 at atmel.com>
---
Changes in v4: None
Changes in v3: None
Changes in v2: None
arch/arm/mach-at91/include/mach/atmel_pio4.h | 35 ++++++++++++++
drivers/gpio/atmel_pio4.c | 71 +++++++---------------------
2 files changed, 53 insertions(+), 53 deletions(-)
diff --git a/arch/arm/mach-at91/include/mach/atmel_pio4.h b/arch/arm/mach-at91/include/mach/atmel_pio4.h
index 8bb4b12..6760bec 100644
--- a/arch/arm/mach-at91/include/mach/atmel_pio4.h
+++ b/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
diff --git a/drivers/gpio/atmel_pio4.c b/drivers/gpio/atmel_pio4.c
index d71f525..84e8cc5 100644
--- a/drivers/gpio/atmel_pio4.c
+++ b/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;
}
--
2.7.4
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