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authorH. Peter Anvin <hpa@zytor.com>2009-08-26 20:17:51 -0400
committerH. Peter Anvin <hpa@zytor.com>2009-08-26 20:24:28 -0400
commitb855192c08fcb14adbc5d3a7cab182022d433cca (patch)
tree3a10cafbfbf98cafacf667eb218c71300b351bfa /arch/mips/include/asm/mach-ar7/gpio.h
parentd886c73cd4cf02a71e1650cbcb6176799d78aac1 (diff)
parent3e0e1e9c5a327d4dba8490d83ef55c0564e6e8a7 (diff)
Merge branch 'x86/urgent' into x86/pat
Reason: Change to is_new_memtype_allowed() in x86/urgent Resolved semantic conflicts in: arch/x86/mm/pat.c arch/x86/mm/ioremap.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/mips/include/asm/mach-ar7/gpio.h')
-rw-r--r--arch/mips/include/asm/mach-ar7/gpio.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-ar7/gpio.h b/arch/mips/include/asm/mach-ar7/gpio.h
new file mode 100644
index 000000000000..cbe9c4f126df
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar7/gpio.h
@@ -0,0 +1,110 @@
1/*
2 * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef __AR7_GPIO_H__
20#define __AR7_GPIO_H__
21
22#include <asm/mach-ar7/ar7.h>
23
24#define AR7_GPIO_MAX 32
25
26extern int gpio_request(unsigned gpio, const char *label);
27extern void gpio_free(unsigned gpio);
28
29/* Common GPIO layer */
30static inline int gpio_get_value(unsigned gpio)
31{
32 void __iomem *gpio_in =
33 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_INPUT);
34
35 return readl(gpio_in) & (1 << gpio);
36}
37
38static inline void gpio_set_value(unsigned gpio, int value)
39{
40 void __iomem *gpio_out =
41 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_OUTPUT);
42 unsigned tmp;
43
44 tmp = readl(gpio_out) & ~(1 << gpio);
45 if (value)
46 tmp |= 1 << gpio;
47 writel(tmp, gpio_out);
48}
49
50static inline int gpio_direction_input(unsigned gpio)
51{
52 void __iomem *gpio_dir =
53 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_DIR);
54
55 if (gpio >= AR7_GPIO_MAX)
56 return -EINVAL;
57
58 writel(readl(gpio_dir) | (1 << gpio), gpio_dir);
59
60 return 0;
61}
62
63static inline int gpio_direction_output(unsigned gpio, int value)
64{
65 void __iomem *gpio_dir =
66 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_DIR);
67
68 if (gpio >= AR7_GPIO_MAX)
69 return -EINVAL;
70
71 gpio_set_value(gpio, value);
72 writel(readl(gpio_dir) & ~(1 << gpio), gpio_dir);
73
74 return 0;
75}
76
77static inline int gpio_to_irq(unsigned gpio)
78{
79 return -EINVAL;
80}
81
82static inline int irq_to_gpio(unsigned irq)
83{
84 return -EINVAL;
85}
86
87/* Board specific GPIO functions */
88static inline int ar7_gpio_enable(unsigned gpio)
89{
90 void __iomem *gpio_en =
91 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_ENABLE);
92
93 writel(readl(gpio_en) | (1 << gpio), gpio_en);
94
95 return 0;
96}
97
98static inline int ar7_gpio_disable(unsigned gpio)
99{
100 void __iomem *gpio_en =
101 (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_ENABLE);
102
103 writel(readl(gpio_en) & ~(1 << gpio), gpio_en);
104
105 return 0;
106}
107
108#include <asm-generic/gpio.h>
109
110#endif