diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /arch/arm/mach-shmobile/sh-gpio.h | |
Diffstat (limited to 'arch/arm/mach-shmobile/sh-gpio.h')
| -rw-r--r-- | arch/arm/mach-shmobile/sh-gpio.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/sh-gpio.h b/arch/arm/mach-shmobile/sh-gpio.h new file mode 100644 index 00000000..e834763a --- /dev/null +++ b/arch/arm/mach-shmobile/sh-gpio.h @@ -0,0 +1,48 @@ +/* + * Generic GPIO API and pinmux table support + * + * Copyright (c) 2008 Magnus Damm + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/io.h> + +/* + * FIXME !! + * + * current gpio frame work doesn't have + * the method to control only pull up/down/free. + * this function should be replaced by correct gpio function + */ +static inline void __init gpio_direction_none(void __iomem * addr) +{ + __raw_writeb(0x00, addr); +} + +static inline void __init gpio_request_pullup(void __iomem * addr) +{ + u8 data = __raw_readb(addr); + + data &= 0x0F; + data |= 0xC0; + __raw_writeb(data, addr); +} + +static inline void __init gpio_request_pulldown(void __iomem * addr) +{ + u8 data = __raw_readb(addr); + + data &= 0x0F; + data |= 0xA0; + + __raw_writeb(data, addr); +} + +#endif /* __ASM_ARCH_GPIO_H */ |