ramips: use tabs instead of spaces in mach-f5d8235-v2.c

[openwrt.git] / target / linux / ramips / files / arch / mips / ralink / common / gpio.c

diff --git a/target/linux/ramips/files/arch/mips/ralink/common/gpio.c b/target/linux/ramips/files/arch/mips/ralink/common/gpio.c
index 3a1b038..e350fc1 100644 (file)
--- a/target/linux/ramips/files/arch/mips/ralink/common/gpio.c
+++ b/target/linux/ramips/files/arch/mips/ralink/common/gpio.c
@@ -10,7 +10,7 @@
 
 #include <linux/init.h>
 #include <linux/io.h>
 
 #include <linux/init.h>
 #include <linux/io.h>

-
+#include <linux/spinlock.h>

 #include <linux/gpio.h>
 
 #include <ralink_soc.h>
 #include <linux/gpio.h>
 
 #include <ralink_soc.h>


@@ -64,6 +64,7 @@ enum ramips_pio_reg {
 
 struct ramips_gpio_chip {
        struct gpio_chip        chip;
 
 struct ramips_gpio_chip {
        struct gpio_chip        chip;

+       spinlock_t              lock;

        u8                      regs[RAMIPS_GPIO_REG_MAX];
 };
 
        u8                      regs[RAMIPS_GPIO_REG_MAX];
 };
 


@@ -90,11 +91,14 @@ static inline u32 ramips_gpio_rr(struct ramips_gpio_chip *rg, u8 reg)
 static int ramips_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
        struct ramips_gpio_chip *rg = to_ramips_gpio(chip);
 static int ramips_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
        struct ramips_gpio_chip *rg = to_ramips_gpio(chip);

+       unsigned long flags;

        u32 t;
 
        u32 t;
 

+       spin_lock_irqsave(&rg->lock, flags);

        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DIR);
        t &= ~(1 << offset);
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_DIR, t);
        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DIR);
        t &= ~(1 << offset);
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_DIR, t);

+       spin_unlock_irqrestore(&rg->lock, flags);

 
        return 0;
 }
 
        return 0;
 }


@@ -103,15 +107,19 @@ static int ramips_gpio_direction_output(struct gpio_chip *chip,
                                        unsigned offset, int value)
 {
        struct ramips_gpio_chip *rg = to_ramips_gpio(chip);
                                        unsigned offset, int value)
 {
        struct ramips_gpio_chip *rg = to_ramips_gpio(chip);

+       unsigned long flags;

        u32 reg;
        u32 t;
 
        reg = (value) ? RAMIPS_GPIO_REG_SET : RAMIPS_GPIO_REG_RESET;
        u32 reg;
        u32 t;
 
        reg = (value) ? RAMIPS_GPIO_REG_SET : RAMIPS_GPIO_REG_RESET;

+
+       spin_lock_irqsave(&rg->lock, flags);

        ramips_gpio_wr(rg, reg, 1 << offset);
 
        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DIR);
        t |= 1 << offset;
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_DIR, t);
        ramips_gpio_wr(rg, reg, 1 << offset);
 
        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DIR);
        t |= 1 << offset;
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_DIR, t);

+       spin_unlock_irqrestore(&rg->lock, flags);

 
        return 0;
 }
 
        return 0;
 }


@@ -131,7 +139,7 @@ static int ramips_gpio_get(struct gpio_chip *chip, unsigned offset)
        u32 t;
 
        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DATA);
        u32 t;
 
        t = ramips_gpio_rr(rg, RAMIPS_GPIO_REG_DATA);

-       return (t & (1 << offset));
+       return !!(t & (1 << offset));

 }
 
 static struct ramips_gpio_chip ramips_gpio_chip0 = {
 }
 
 static struct ramips_gpio_chip ramips_gpio_chip0 = {


@@ -208,6 +216,8 @@ static struct ramips_gpio_chip ramips_gpio_chip2 = {
 
 static __init void ramips_gpio_chip_add(struct ramips_gpio_chip *rg)
 {
 
 static __init void ramips_gpio_chip_add(struct ramips_gpio_chip *rg)
 {

+       spin_lock_init(&rg->lock);
+

        /* set polarity to low for all lines */
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_POL, 0);
 
        /* set polarity to low for all lines */
        ramips_gpio_wr(rg, RAMIPS_GPIO_REG_POL, 0);