diff options
Diffstat (limited to 'include/asm-arm/arch-pxa')
-rw-r--r-- | include/asm-arm/arch-pxa/gpio.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/asm-arm/arch-pxa/gpio.h b/include/asm-arm/arch-pxa/gpio.h new file mode 100644 index 000000000000..e67c23821017 --- /dev/null +++ b/include/asm-arm/arch-pxa/gpio.h | |||
@@ -0,0 +1,72 @@ | |||
1 | /* | ||
2 | * linux/include/asm-arm/arch-pxa/gpio.h | ||
3 | * | ||
4 | * PXA GPIO wrappers for arch-neutral GPIO calls | ||
5 | * | ||
6 | * Written by Philipp Zabel <philipp.zabel@gmail.com> | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License as published by | ||
10 | * the Free Software Foundation; either version 2 of the License, or | ||
11 | * (at your option) any later version. | ||
12 | * | ||
13 | * This program is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 | * GNU General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 | * | ||
22 | */ | ||
23 | |||
24 | #ifndef __ASM_ARCH_PXA_GPIO_H | ||
25 | #define __ASM_ARCH_PXA_GPIO_H | ||
26 | |||
27 | #include <asm/arch/pxa-regs.h> | ||
28 | #include <asm/arch/irqs.h> | ||
29 | #include <asm/arch/hardware.h> | ||
30 | |||
31 | #include <asm/errno.h> | ||
32 | |||
33 | static inline int gpio_request(unsigned gpio, const char *label) | ||
34 | { | ||
35 | return 0; | ||
36 | } | ||
37 | |||
38 | static inline void gpio_free(unsigned gpio) | ||
39 | { | ||
40 | return; | ||
41 | } | ||
42 | |||
43 | static inline int gpio_direction_input(unsigned gpio) | ||
44 | { | ||
45 | if (gpio > PXA_LAST_GPIO) | ||
46 | return -EINVAL; | ||
47 | pxa_gpio_mode(gpio | GPIO_IN); | ||
48 | } | ||
49 | |||
50 | static inline int gpio_direction_output(unsigned gpio) | ||
51 | { | ||
52 | if (gpio > PXA_LAST_GPIO) | ||
53 | return -EINVAL; | ||
54 | pxa_gpio_mode(gpio | GPIO_OUT); | ||
55 | } | ||
56 | |||
57 | /* REVISIT these macros are correct, but suffer code explosion | ||
58 | * for non-constant parameters. Provide out-line versions too. | ||
59 | */ | ||
60 | #define gpio_get_value(gpio) \ | ||
61 | (GPLR(gpio) & GPIO_bit(gpio)) | ||
62 | |||
63 | #define gpio_set_value(gpio,value) \ | ||
64 | ((value) ? (GPSR(gpio) = GPIO_bit(gpio)):(GPCR(gpio) = GPIO_bit(gpio))) | ||
65 | |||
66 | #include <asm-generic/gpio.h> /* cansleep wrappers */ | ||
67 | |||
68 | #define gpio_to_irq(gpio) IRQ_GPIO(gpio) | ||
69 | #define irq_to_gpio(irq) IRQ_TO_GPIO(irq) | ||
70 | |||
71 | |||
72 | #endif | ||