diff options
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/gpio.h')
-rw-r--r-- | arch/arm/mach-davinci/include/mach/gpio.h | 79 |
1 files changed, 2 insertions, 77 deletions
diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h index fbece126c2bf..fbaae4772b91 100644 --- a/arch/arm/mach-davinci/include/mach/gpio.h +++ b/arch/arm/mach-davinci/include/mach/gpio.h | |||
@@ -13,80 +13,10 @@ | |||
13 | #ifndef __DAVINCI_GPIO_H | 13 | #ifndef __DAVINCI_GPIO_H |
14 | #define __DAVINCI_GPIO_H | 14 | #define __DAVINCI_GPIO_H |
15 | 15 | ||
16 | #include <linux/io.h> | ||
17 | #include <linux/spinlock.h> | ||
18 | |||
19 | #include <asm-generic/gpio.h> | 16 | #include <asm-generic/gpio.h> |
20 | 17 | ||
21 | #include <mach/irqs.h> | 18 | /* The inline versions use the static inlines in the driver header */ |
22 | #include <mach/common.h> | 19 | #include "gpio-davinci.h" |
23 | |||
24 | #define DAVINCI_GPIO_BASE 0x01C67000 | ||
25 | |||
26 | enum davinci_gpio_type { | ||
27 | GPIO_TYPE_DAVINCI = 0, | ||
28 | GPIO_TYPE_TNETV107X, | ||
29 | }; | ||
30 | |||
31 | /* | ||
32 | * basic gpio routines | ||
33 | * | ||
34 | * board-specific init should be done by arch/.../.../board-XXX.c (maybe | ||
35 | * initializing banks together) rather than boot loaders; kexec() won't | ||
36 | * go through boot loaders. | ||
37 | * | ||
38 | * the gpio clock will be turned on when gpios are used, and you may also | ||
39 | * need to pay attention to PINMUX registers to be sure those pins are | ||
40 | * used as gpios, not with other peripherals. | ||
41 | * | ||
42 | * On-chip GPIOs are numbered 0..(DAVINCI_N_GPIO-1). For documentation, | ||
43 | * and maybe for later updates, code may write GPIO(N). These may be | ||
44 | * all 1.8V signals, all 3.3V ones, or a mix of the two. A given chip | ||
45 | * may not support all the GPIOs in that range. | ||
46 | * | ||
47 | * GPIOs can also be on external chips, numbered after the ones built-in | ||
48 | * to the DaVinci chip. For now, they won't be usable as IRQ sources. | ||
49 | */ | ||
50 | #define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */ | ||
51 | |||
52 | /* Convert GPIO signal to GPIO pin number */ | ||
53 | #define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio)) | ||
54 | |||
55 | struct davinci_gpio_controller { | ||
56 | struct gpio_chip chip; | ||
57 | int irq_base; | ||
58 | spinlock_t lock; | ||
59 | void __iomem *regs; | ||
60 | void __iomem *set_data; | ||
61 | void __iomem *clr_data; | ||
62 | void __iomem *in_data; | ||
63 | }; | ||
64 | |||
65 | /* The __gpio_to_controller() and __gpio_mask() functions inline to constants | ||
66 | * with constant parameters; or in outlined code they execute at runtime. | ||
67 | * | ||
68 | * You'd access the controller directly when reading or writing more than | ||
69 | * one gpio value at a time, and to support wired logic where the value | ||
70 | * being driven by the cpu need not match the value read back. | ||
71 | * | ||
72 | * These are NOT part of the cross-platform GPIO interface | ||
73 | */ | ||
74 | static inline struct davinci_gpio_controller * | ||
75 | __gpio_to_controller(unsigned gpio) | ||
76 | { | ||
77 | struct davinci_gpio_controller *ctlrs = davinci_soc_info.gpio_ctlrs; | ||
78 | int index = gpio / 32; | ||
79 | |||
80 | if (!ctlrs || index >= davinci_soc_info.gpio_ctlrs_num) | ||
81 | return NULL; | ||
82 | |||
83 | return ctlrs + index; | ||
84 | } | ||
85 | |||
86 | static inline u32 __gpio_mask(unsigned gpio) | ||
87 | { | ||
88 | return 1 << (gpio % 32); | ||
89 | } | ||
90 | 20 | ||
91 | /* | 21 | /* |
92 | * The get/set/clear functions will inline when called with constant | 22 | * The get/set/clear functions will inline when called with constant |
@@ -147,11 +77,6 @@ static inline int gpio_cansleep(unsigned gpio) | |||
147 | return __gpio_cansleep(gpio); | 77 | return __gpio_cansleep(gpio); |
148 | } | 78 | } |
149 | 79 | ||
150 | static inline int gpio_to_irq(unsigned gpio) | ||
151 | { | ||
152 | return __gpio_to_irq(gpio); | ||
153 | } | ||
154 | |||
155 | static inline int irq_to_gpio(unsigned irq) | 80 | static inline int irq_to_gpio(unsigned irq) |
156 | { | 81 | { |
157 | /* don't support the reverse mapping */ | 82 | /* don't support the reverse mapping */ |