diff options
author | David S. Miller <davem@davemloft.net> | 2008-03-18 03:37:55 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2008-03-18 03:37:55 -0400 |
commit | 577f99c1d08cf9cbdafd4e858dd13ff04d855090 (patch) | |
tree | 0f726bbda9b18d311d4c95198bbd96cb7ac01db0 /include/linux/gpio.h | |
parent | 26c0f03f6b77c513cb7bc37b73a06819bdbb791b (diff) | |
parent | 2f633928cbba8a5858bb39b11e7219a41b0fbef5 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/rt2x00/rt2x00dev.c
net/8021q/vlan_dev.c
Diffstat (limited to 'include/linux/gpio.h')
-rw-r--r-- | include/linux/gpio.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h new file mode 100644 index 000000000000..4987a84078ef --- /dev/null +++ b/include/linux/gpio.h | |||
@@ -0,0 +1,95 @@ | |||
1 | #ifndef __LINUX_GPIO_H | ||
2 | #define __LINUX_GPIO_H | ||
3 | |||
4 | /* see Documentation/gpio.txt */ | ||
5 | |||
6 | #ifdef CONFIG_GENERIC_GPIO | ||
7 | #include <asm/gpio.h> | ||
8 | |||
9 | #else | ||
10 | |||
11 | /* | ||
12 | * Some platforms don't support the GPIO programming interface. | ||
13 | * | ||
14 | * In case some driver uses it anyway (it should normally have | ||
15 | * depended on GENERIC_GPIO), these routines help the compiler | ||
16 | * optimize out much GPIO-related code ... or trigger a runtime | ||
17 | * warning when something is wrongly called. | ||
18 | */ | ||
19 | |||
20 | static inline int gpio_is_valid(int number) | ||
21 | { | ||
22 | return 0; | ||
23 | } | ||
24 | |||
25 | static inline int gpio_request(unsigned gpio, const char *label) | ||
26 | { | ||
27 | return -ENOSYS; | ||
28 | } | ||
29 | |||
30 | static inline void gpio_free(unsigned gpio) | ||
31 | { | ||
32 | /* GPIO can never have been requested */ | ||
33 | WARN_ON(1); | ||
34 | } | ||
35 | |||
36 | static inline int gpio_direction_input(unsigned gpio) | ||
37 | { | ||
38 | return -ENOSYS; | ||
39 | } | ||
40 | |||
41 | static inline int gpio_direction_output(unsigned gpio, int value) | ||
42 | { | ||
43 | return -ENOSYS; | ||
44 | } | ||
45 | |||
46 | static inline int gpio_get_value(unsigned gpio) | ||
47 | { | ||
48 | /* GPIO can never have been requested or set as {in,out}put */ | ||
49 | WARN_ON(1); | ||
50 | return 0; | ||
51 | } | ||
52 | |||
53 | static inline void gpio_set_value(unsigned gpio, int value) | ||
54 | { | ||
55 | /* GPIO can never have been requested or set as output */ | ||
56 | WARN_ON(1); | ||
57 | } | ||
58 | |||
59 | static inline int gpio_cansleep(unsigned gpio) | ||
60 | { | ||
61 | /* GPIO can never have been requested or set as {in,out}put */ | ||
62 | WARN_ON(1); | ||
63 | return 0; | ||
64 | } | ||
65 | |||
66 | static inline int gpio_get_value_cansleep(unsigned gpio) | ||
67 | { | ||
68 | /* GPIO can never have been requested or set as {in,out}put */ | ||
69 | WARN_ON(1); | ||
70 | return 0; | ||
71 | } | ||
72 | |||
73 | static inline void gpio_set_value_cansleep(unsigned gpio, int value) | ||
74 | { | ||
75 | /* GPIO can never have been requested or set as output */ | ||
76 | WARN_ON(1); | ||
77 | } | ||
78 | |||
79 | static inline int gpio_to_irq(unsigned gpio) | ||
80 | { | ||
81 | /* GPIO can never have been requested or set as input */ | ||
82 | WARN_ON(1); | ||
83 | return -EINVAL; | ||
84 | } | ||
85 | |||
86 | static inline int irq_to_gpio(unsigned irq) | ||
87 | { | ||
88 | /* irq can never have been returned from gpio_to_irq() */ | ||
89 | WARN_ON(1); | ||
90 | return -EINVAL; | ||
91 | } | ||
92 | |||
93 | #endif | ||
94 | |||
95 | #endif /* __LINUX_GPIO_H */ | ||