On 6/3/2010 2:43 PM, Ben Dooks wrote:
> On Thu, Jun 03, 2010 at 02:01:34PM +0900, Joonyoung Shim wrote:
>> This patch is to support gpio_to_irq() of GPIOlib for external
>> interrupts. The gpio_to_irq() calls s5p_gpiolib_eint_to_irq function.
>
> How about each s3c_gpio_chip have a irq base in it?
>
Good, then it can be arch and irq type(gpio, external)independent codes.
>> Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
>> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
>> ---
>> arch/arm/plat-s5p/Makefile | 1 +
>> arch/arm/plat-s5p/gpiolib.c | 35 ++++++++++++++++++++++++
>> arch/arm/plat-samsung/include/plat/gpio-core.h | 2 +
>> 3 files changed, 38 insertions(+), 0 deletions(-)
>> create mode 100644 arch/arm/plat-s5p/gpiolib.c
>>
>> diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile
>> index 39c242b..f6e1a13 100644
>> --- a/arch/arm/plat-s5p/Makefile
>> +++ b/arch/arm/plat-s5p/Makefile
>> @@ -15,6 +15,7 @@ obj- :=
>> obj-y += dev-uart.o
>> obj-y += cpu.o
>> obj-y += clock.o
>> +obj-y += gpiolib.o
>> obj-y += irq.o
>> obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o
>>
>> diff --git a/arch/arm/plat-s5p/gpiolib.c b/arch/arm/plat-s5p/gpiolib.c
>> new file mode 100644
>> index 0000000..0c27a9d
>> --- /dev/null
>> +++ b/arch/arm/plat-s5p/gpiolib.c
>> @@ -0,0 +1,35 @@
>> +/*
>> + * linux/arch/arm/plat-s5p/gpiolib.c
>> + *
>> + * Copyright (C) 2010 Samsung Electronics Co.Ltd
>> + * Author: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
>> + *
>> + * S5P - GPIOlib support
>> + *
>> + * This program is free software; you can redistribute it and/or modify it
>> + * under the terms of the GNU General Public License as published by the
>> + * Free Software Foundation; either version 2 of the License, or (at your
>> + * option) any later version.
>> + *
>> + */
>> +
>> +#include <linux/gpio.h>
>> +#include <mach/irqs.h>
>> +#include <mach/regs-gpio.h>
>> +
>> +/* be called from gpio_to_irq() for external interrupts */
>> +int s5p_gpiolib_eint_to_irq(struct gpio_chip *chip, unsigned int offset)
>> +{
>> + switch (chip->base) {
>> + case EINT_GPIO_0(0):
>> + return IRQ_EINT(offset);
>> + case EINT_GPIO_1(0):
>> + return IRQ_EINT(8 + offset);
>> + case EINT_GPIO_2(0):
>> + return IRQ_EINT(16 + offset);
>> + case EINT_GPIO_3(0):
>> + return IRQ_EINT(24 + offset);
>> + default:
>> + return -EINVAL;
>> + }
>> +}
>> diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
>> index e358c7d..f6c5151 100644
>> --- a/arch/arm/plat-samsung/include/plat/gpio-core.h
>> +++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
>> @@ -121,6 +121,8 @@ extern void samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip);
>> /* exported for core SoC support to change */
>> extern struct s3c_gpio_cfg s3c24xx_gpiocfg_default;
>>
>> +extern int s5p_gpiolib_eint_to_irq(struct gpio_chip *chip, unsigned int offset);
>> +
>> #ifdef CONFIG_S3C_GPIO_TRACK
>> extern struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
>>
>> --
>> 1.7.0.4
>>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
