diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/core.c | 63 |
2 files changed, 45 insertions, 19 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a04f507e7f2c..97e58a1863c2 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -217,6 +217,7 @@ config ARCH_EP93XX bool "EP93xx-based" select ARM_AMBA select ARM_VIC + select GENERIC_GPIO help This enables support for the Cirrus EP93xx series of CPUs. diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 70b2c7801110..8a7340661377 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -188,7 +188,7 @@ static unsigned char data_direction_register_offset[8] = { 0x10, 0x14, 0x18, 0x1c, 0x24, 0x34, 0x3c, 0x44, }; -void gpio_line_config(int line, int direction) +static void ep93xx_gpio_set_direction(unsigned line, int direction) { unsigned int data_direction_register; unsigned long flags; @@ -219,39 +219,64 @@ void gpio_line_config(int line, int direction) } local_irq_restore(flags); } + +void __deprecated gpio_line_config(int line, int direction) +{ + ep93xx_gpio_set_direction(line, direction); +} EXPORT_SYMBOL(gpio_line_config); -int gpio_line_get(int line) +int gpio_direction_input(unsigned gpio) +{ + if (gpio > EP93XX_GPIO_LINE_H(7)) + return -EINVAL; + + ep93xx_gpio_set_direction(gpio, GPIO_IN); + + return 0; +} +EXPORT_SYMBOL(gpio_direction_input); + +int gpio_direction_output(unsigned gpio, int value) +{ + if (gpio > EP93XX_GPIO_LINE_H(7)) + return -EINVAL; + + gpio_set_value(gpio, value); + ep93xx_gpio_set_direction(gpio, GPIO_OUT); + + return 0; +} +EXPORT_SYMBOL(gpio_direction_output); + +int gpio_get_value(unsigned gpio) { unsigned int data_register; - data_register = EP93XX_GPIO_REG(data_register_offset[line >> 3]); + data_register = EP93XX_GPIO_REG(data_register_offset[gpio >> 3]); - return !!(__raw_readb(data_register) & (1 << (line & 7))); + return !!(__raw_readb(data_register) & (1 << (gpio & 7))); } -EXPORT_SYMBOL(gpio_line_get); +EXPORT_SYMBOL(gpio_get_value); -void gpio_line_set(int line, int value) +void gpio_set_value(unsigned gpio, int value) { unsigned int data_register; unsigned long flags; unsigned char v; - data_register = EP93XX_GPIO_REG(data_register_offset[line >> 3]); + data_register = EP93XX_GPIO_REG(data_register_offset[gpio >> 3]); local_irq_save(flags); - if (value == EP93XX_GPIO_HIGH) { - v = __raw_readb(data_register); - v |= 1 << (line & 7); - __raw_writeb(v, data_register); - } else if (value == EP93XX_GPIO_LOW) { - v = __raw_readb(data_register); - v &= ~(1 << (line & 7)); - __raw_writeb(v, data_register); - } + v = __raw_readb(data_register); + if (value) + v |= 1 << (gpio & 7); + else + v &= ~(1 << (gpio & 7)); + __raw_writeb(v, data_register); local_irq_restore(flags); } -EXPORT_SYMBOL(gpio_line_set); +EXPORT_SYMBOL(gpio_set_value); /************************************************************************* @@ -334,9 +359,9 @@ static int ep93xx_gpio_irq_type(unsigned int irq, unsigned int type) line = irq - IRQ_EP93XX_GPIO(0); if (line >= 0 && line < 16) { - gpio_line_config(line, GPIO_IN); + ep93xx_gpio_set_direction(line, GPIO_IN); } else { - gpio_line_config(EP93XX_GPIO_LINE_F(line-16), GPIO_IN); + ep93xx_gpio_set_direction(EP93XX_GPIO_LINE_F(line-16), GPIO_IN); } port = line >> 3; |