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gerrit.cesnet.cz / github / trini / u-boot / 880b15a37b22ce516b24460e4bbedd9a6b055625 / . / arch / arm / include / asm / arch-u8500 / gpio.h
blob: afa5942c99169e308a87ffa3d3d2c35a45f6be87 [file] [log] [blame]
John Rigbybe72e0c2011-04-19 10:42:40 +0000[diff] [blame]1/*
2 * Copyright (C) ST-Ericsson SA 2009
3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]4 * SPDX-License-Identifier: GPL-2.0+
John Rigbybe72e0c2011-04-19 10:42:40 +0000[diff] [blame]5 */
6
7#ifndef _UX500_GPIO_h
8#define _UX500_GPIO_h
9
10#include <asm/types.h>
11#include <asm/io.h>
12#include <asm/errno.h>
13
14#include <asm/arch/sys_proto.h>
15#include <asm/arch/u8500.h>
16
17#define GPIO_TOTAL_PINS 268
18
19#define GPIO_PINS_PER_BLOCK 32
20#define GPIO_BLOCKS_COUNT (GPIO_TOTAL_PINS/GPIO_PINS_PER_BLOCK + 1)
21#define GPIO_BLOCK(pin) (((pin + GPIO_PINS_PER_BLOCK) >> 5) - 1)
22
23
24struct gpio_register {
Wolfgang Denk4c964082011-06-02 23:18:32 +0200[diff] [blame]25 u32 gpio_dat; /* data register : 0x000 */
26 u32 gpio_dats; /* data Set register : 0x004 */
27 u32 gpio_datc; /* data Clear register : 0x008 */
28 u32 gpio_pdis; /* Pull disable register : 0x00C */
29 u32 gpio_dir; /* data direction register : 0x010 */
30 u32 gpio_dirs; /* data dir Set register : 0x014 */
31 u32 gpio_dirc; /* data dir Clear register : 0x018 */
32 u32 gpio_slpm; /* Sleep mode register : 0x01C */
33 u32 gpio_afsa; /* AltFun A Select reg : 0x020 */
34 u32 gpio_afsb; /* AltFun B Select reg : 0x024 */
35 u32 gpio_lowemi;/* low EMI Select reg : 0x028 */
John Rigbybe72e0c2011-04-19 10:42:40 +0000[diff] [blame]36 u32 reserved_1[(0x040 - 0x02C) >> 2]; /*0x028-0x3C Reserved*/
Wolfgang Denk4c964082011-06-02 23:18:32 +0200[diff] [blame]37 u32 gpio_rimsc; /* rising edge intr set/clear : 0x040 */
38 u32 gpio_fimsc; /* falling edge intr set/clear register : 0x044 */
39 u32 gpio_mis; /* masked interrupt status register : 0x048 */
40 u32 gpio_ic; /* Interrupt Clear register : 0x04C */
41 u32 gpio_rwimsc;/* Rising-edge Wakeup IMSC register : 0x050 */
42 u32 gpio_fwimsc;/* Falling-edge Wakeup IMSC register : 0x054 */
43 u32 gpio_wks; /* Wakeup Status register : 0x058 */
John Rigbybe72e0c2011-04-19 10:42:40 +0000[diff] [blame]44};
45
46/* Error values returned by functions */
47enum gpio_error {
48 GPIO_OK = 0,
49 GPIO_UNSUPPORTED_HW = -2,
50 GPIO_UNSUPPORTED_FEATURE = -3,
51 GPIO_INVALID_PARAMETER = -4,
52 GPIO_REQUEST_NOT_APPLICABLE = -5,
53 GPIO_REQUEST_PENDING = -6,
54 GPIO_NOT_CONFIGURED = -7,
55 GPIO_INTERNAL_ERROR = -8,
56 GPIO_INTERNAL_EVENT = 1,
57 GPIO_REMAINING_EVENT = 2,
58 GPIO_NO_MORE_PENDING_EVENT = 3,
59 GPIO_INVALID_CLIENT = -25,
60 GPIO_INVALID_PIN = -26,
61 GPIO_PIN_BUSY = -27,
62 GPIO_PIN_NOT_ALLOCATED = -28,
63 GPIO_WRONG_CLIENT = -29,
64 GPIO_UNSUPPORTED_ALTFUNC = -30,
65};
66
67/*GPIO DEVICE ID */
68enum gpio_device_id {
69 GPIO_DEVICE_ID_0,
70 GPIO_DEVICE_ID_1,
71 GPIO_DEVICE_ID_2,
72 GPIO_DEVICE_ID_3,
73 GPIO_DEVICE_ID_INVALID
74};
75
76/*
77 * Alternate Function:
78 * refered in altfun_table to pointout particular altfun to be enabled
79 * when using GPIO_ALT_FUNCTION A/B/C enable/disable operation
80 */
81enum gpio_alt_function {
82 GPIO_ALT_UART_0_MODEM,
83 GPIO_ALT_UART_0_NO_MODEM,
84 GPIO_ALT_UART_1,
85 GPIO_ALT_UART_2,
86 GPIO_ALT_I2C_0,
87 GPIO_ALT_I2C_1,
88 GPIO_ALT_I2C_2,
89 GPIO_ALT_I2C_3,
90 GPIO_ALT_MSP_0,
91 GPIO_ALT_MSP_1,
92 GPIO_ALT_MSP_2,
93 GPIO_ALT_MSP_3,
94 GPIO_ALT_MSP_4,
95 GPIO_ALT_MSP_5,
96 GPIO_ALT_SSP_0,
97 GPIO_ALT_SSP_1,
98 GPIO_ALT_MM_CARD0,
99 GPIO_ALT_SD_CARD0,
100 GPIO_ALT_DMA_0,
101 GPIO_ALT_DMA_1,
102 GPIO_ALT_HSI0,
103 GPIO_ALT_CCIR656_INPUT,
104 GPIO_ALT_CCIR656_OUTPUT,
105 GPIO_ALT_LCD_PANEL,
106 GPIO_ALT_MDIF,
107 GPIO_ALT_SDRAM,
108 GPIO_ALT_HAMAC_AUDIO_DBG,
109 GPIO_ALT_HAMAC_VIDEO_DBG,
110 GPIO_ALT_CLOCK_RESET,
111 GPIO_ALT_TSP,
112 GPIO_ALT_IRDA,
113 GPIO_ALT_USB_MINIMUM,
114 GPIO_ALT_USB_I2C,
115 GPIO_ALT_OWM,
116 GPIO_ALT_PWL,
117 GPIO_ALT_FSMC,
118 GPIO_ALT_COMP_FLASH,
119 GPIO_ALT_SRAM_NOR_FLASH,
120 GPIO_ALT_FSMC_ADDLINE_0_TO_15,
121 GPIO_ALT_SCROLL_KEY,
122 GPIO_ALT_MSHC,
123 GPIO_ALT_HPI,
124 GPIO_ALT_USB_OTG,
125 GPIO_ALT_SDIO,
126 GPIO_ALT_HSMMC,
127 GPIO_ALT_FSMC_ADD_DATA_0_TO_25,
128 GPIO_ALT_HSI1,
129 GPIO_ALT_NOR,
130 GPIO_ALT_NAND,
131 GPIO_ALT_KEYPAD,
132 GPIO_ALT_VPIP,
133 GPIO_ALT_CAM,
134 GPIO_ALT_CCP1,
135 GPIO_ALT_EMMC,
136 GPIO_ALT_POP_EMMC,
137 GPIO_ALT_FUNMAX /* Add new alt func before this */
138};
139
140/* Defines pin assignment(Software mode or Alternate mode) */
141enum gpio_mode {
142 GPIO_MODE_LEAVE_UNCHANGED, /* Parameter will be ignored */
143 GPIO_MODE_SOFTWARE, /* Pin connected to GPIO (SW controlled) */
144 GPIO_ALTF_A, /* Pin connected to altfunc 1 (HW periph 1) */
145 GPIO_ALTF_B, /* Pin connected to altfunc 2 (HW periph 2) */
146 GPIO_ALTF_C, /* Pin connected to altfunc 3 (HW periph 3) */
147 GPIO_ALTF_FIND, /* Pin connected to altfunc 3 (HW periph 3) */
148 GPIO_ALTF_DISABLE /* Pin connected to altfunc 3 (HW periph 3) */
149};
150
151/* Defines GPIO pin direction */
152enum gpio_direction {
153 GPIO_DIR_LEAVE_UNCHANGED, /* Parameter will be ignored */
154 GPIO_DIR_INPUT, /* GPIO set as input */
155 GPIO_DIR_OUTPUT /* GPIO set as output */
156};
157
158/* Interrupt trigger mode */
159enum gpio_trig {
160 GPIO_TRIG_LEAVE_UNCHANGED, /* Parameter will be ignored */
161 GPIO_TRIG_DISABLE, /* Trigger no IT */
162 GPIO_TRIG_RISING_EDGE, /* Trigger an IT on rising edge */
163 GPIO_TRIG_FALLING_EDGE, /* Trigger an IT on falling edge */
164 GPIO_TRIG_BOTH_EDGES, /* Trigger an IT on rising and falling edge */
165 GPIO_TRIG_HIGH_LEVEL, /* Trigger an IT on high level */
166 GPIO_TRIG_LOW_LEVEL /* Trigger an IT on low level */
167};
168
169/* Configuration parameters for one GPIO pin.*/
170struct gpio_config {
171 enum gpio_mode mode;
172 enum gpio_direction direction;
173 enum gpio_trig trig;
174 char *dev_name; /* Who owns the gpio pin */
175};
176
177/* GPIO pin data*/
178enum gpio_data {
179 GPIO_DATA_LOW,
180 GPIO_DATA_HIGH
181};
182
183/* GPIO behaviour in sleep mode */
184enum gpio_sleep_mode {
185 GPIO_SLEEP_MODE_LEAVE_UNCHANGED, /* Parameter will be ignored */
186 GPIO_SLEEP_MODE_INPUT_DEFAULTVOLT, /* GPIO is an input with pull
187 up/down enabled when in sleep
188 mode. */
189 GPIO_SLEEP_MODE_CONTROLLED_BY_GPIO /* GPIO pin is controlled by
190 GPIO IP. So mode, direction
191 and data values for GPIO pin
192 in sleep mode are determined
193 by configuration set to GPIO
194 pin before entering to sleep
195 mode. */
196};
197
198/* GPIO ability to wake the system up from sleep mode.*/
199enum gpio_wake {
200 GPIO_WAKE_LEAVE_UNCHANGED, /* Parameter will be ignored */
201 GPIO_WAKE_DISABLE, /* No wake of system from sleep mode. */
202 GPIO_WAKE_LOW_LEVEL, /* Wake the system up on a LOW level. */
203 GPIO_WAKE_HIGH_LEVEL, /* Wake the system up on a HIGH level. */
204 GPIO_WAKE_RISING_EDGE, /* Wake the system up on a RISING edge. */
205 GPIO_WAKE_FALLING_EDGE, /* Wake the system up on a FALLING edge. */
206 GPIO_WAKE_BOTH_EDGES /* Wake the system up on both RISE and FALL. */
207};
208
209/* Configuration parameters for one GPIO pin in sleep mode.*/
210struct gpio_sleep_config {
211 enum gpio_sleep_mode sleep_mode;/* GPIO behaviour in sleep mode. */
212 enum gpio_wake wake; /* GPIO ability to wake up system. */
213};
214
215extern int gpio_setpinconfig(int pin_id, struct gpio_config *pin_config);
216extern int gpio_resetpinconfig(int pin_id, char *dev_name);
217extern int gpio_writepin(int pin_id, enum gpio_data value, char *dev_name);
218extern int gpio_readpin(int pin_id, enum gpio_data *value);
219extern int gpio_altfuncenable(enum gpio_alt_function altfunc,
220 char *dev_name);
221extern int gpio_altfuncdisable(enum gpio_alt_function altfunc,
222 char *dev_name);
223
224struct gpio_altfun_data {
225 u16 altfun;
226 u16 start;
227 u16 end;
228 u16 cont;
229 u8 type;
230};
231#endif