2 * Copyright (C) ST-Ericsson SA 2010
4 * Code ported from Nomadik GPIO driver in ST-Ericsson Linux kernel code.
5 * The purpose is that GPIO config found in kernel should work by simply
6 * copy-paste it to U-boot. Ported 2010 to U-boot by:
7 * Author: Joakim Axelsson <joakim.axelsson AT stericsson.com>
9 * License terms: GNU General Public License, version 2
10 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
13 * Based on arch/arm/mach-pxa/include/mach/mfp.h:
14 * Copyright (C) 2007 Marvell International Ltd.
15 * eric miao <eric.miao@marvell.com>
18 #ifndef __DB8500_PINCFG_H
19 #define __DB8500_PINCFG_H
21 #include "db8500_gpio.h"
25 * SLPM (sleep mode) config will be ignored by U-boot but it is still
26 * possible to configure it in order to keep cut-n-paste compability
27 * with Linux kernel config.
29 * pin configurations are represented by 32-bit integers:
31 * bit 0.. 8 - Pin Number (512 Pins Maximum)
32 * bit 9..10 - Alternate Function Selection
33 * bit 11..12 - Pull up/down state
34 * bit 13 - Sleep mode behaviour (not used in U-boot)
36 * bit 15 - Value (if output)
37 * bit 16..18 - SLPM pull up/down state (not used in U-boot)
38 * bit 19..20 - SLPM direction (not used in U-boot)
39 * bit 21..22 - SLPM Value (if output) (not used in U-boot)
41 * to facilitate the definition, the following macros are provided
43 * PIN_CFG_DEFAULT - default config (0):
44 * pull up/down = disabled
45 * sleep mode = input/wakeup
48 * SLPM direction = same as normal
49 * SLPM pull = same as normal
50 * SLPM value = same as normal
52 * PIN_CFG - default config with alternate function
53 * PIN_CFG_PULL - default config with alternate function and pull up/down
57 enum db8500_gpio_slpm {
58 DB8500_GPIO_SLPM_INPUT,
59 DB8500_GPIO_SLPM_WAKEUP_ENABLE = DB8500_GPIO_SLPM_INPUT,
60 DB8500_GPIO_SLPM_NOCHANGE,
61 DB8500_GPIO_SLPM_WAKEUP_DISABLE = DB8500_GPIO_SLPM_NOCHANGE,
64 #define PIN_NUM_MASK 0x1ff
65 #define PIN_NUM(x) ((x) & PIN_NUM_MASK)
67 #define PIN_ALT_SHIFT 9
68 #define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT)
69 #define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT)
70 #define PIN_GPIO (DB8500_GPIO_ALT_GPIO << PIN_ALT_SHIFT)
71 #define PIN_ALT_A (DB8500_GPIO_ALT_A << PIN_ALT_SHIFT)
72 #define PIN_ALT_B (DB8500_GPIO_ALT_B << PIN_ALT_SHIFT)
73 #define PIN_ALT_C (DB8500_GPIO_ALT_C << PIN_ALT_SHIFT)
75 #define PIN_PULL_SHIFT 11
76 #define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT)
77 #define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT)
78 #define PIN_PULL_NONE (DB8500_GPIO_PULL_NONE << PIN_PULL_SHIFT)
79 #define PIN_PULL_UP (DB8500_GPIO_PULL_UP << PIN_PULL_SHIFT)
80 #define PIN_PULL_DOWN (DB8500_GPIO_PULL_DOWN << PIN_PULL_SHIFT)
82 #define PIN_SLPM_SHIFT 13
83 #define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT)
84 #define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT)
85 #define PIN_SLPM_MAKE_INPUT (DB8500_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT)
86 #define PIN_SLPM_NOCHANGE (DB8500_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT)
87 /* These two replace the above in DB8500v2+ */
88 #define PIN_SLPM_WAKEUP_ENABLE \
89 (DB8500_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT)
90 #define PIN_SLPM_WAKEUP_DISABLE \
91 (DB8500_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT)
93 #define PIN_DIR_SHIFT 14
94 #define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT)
95 #define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT)
96 #define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT)
97 #define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT)
99 #define PIN_VAL_SHIFT 15
100 #define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT)
101 #define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT)
102 #define PIN_VAL_LOW (0 << PIN_VAL_SHIFT)
103 #define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT)
105 #define PIN_SLPM_PULL_SHIFT 16
106 #define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT)
107 #define PIN_SLPM_PULL(x) \
108 (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
109 #define PIN_SLPM_PULL_NONE \
110 ((1 + DB8500_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
111 #define PIN_SLPM_PULL_UP \
112 ((1 + DB8500_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
113 #define PIN_SLPM_PULL_DOWN \
114 ((1 + DB8500_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)
116 #define PIN_SLPM_DIR_SHIFT 19
117 #define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT)
118 #define PIN_SLPM_DIR(x) \
119 (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
120 #define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT)
121 #define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT)
123 #define PIN_SLPM_VAL_SHIFT 21
124 #define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT)
125 #define PIN_SLPM_VAL(x) \
126 (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
127 #define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT)
128 #define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT)
130 /* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */
131 #define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN)
132 #define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP)
133 #define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE)
134 #define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW)
135 #define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH)
137 #define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
138 #define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
139 #define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
140 #define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
141 #define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)
143 #define PIN_CFG_DEFAULT (0)
145 #define PIN_CFG(num, alt) \
147 (PIN_NUM(num) | PIN_##alt))
149 #define PIN_CFG_INPUT(num, alt, pull) \
151 (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))
153 #define PIN_CFG_OUTPUT(num, alt, val) \
155 (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))
157 #define PIN_CFG_PULL(num, alt, pull) \
158 ((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\
159 (PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull))
162 * db8500_gpio_config_pins - configure several pins at once
163 * @cfgs: array of pin configurations
164 * @num: number of elments in the array
166 * Configures several GPIO pins.
168 void db8500_gpio_config_pins(unsigned long *cfgs, size_t num);