2 * (C) Copyright 2007-2008
3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef __ASM_PPC_GPIO_H
25 #define __ASM_PPC_GPIO_H
27 #include <asm/types.h>
29 /* 4xx PPC's have 2 GPIO controllers */
30 #if defined(CONFIG_405EZ) || \
31 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
32 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
33 defined(CONFIG_460EX) || defined(CONFIG_460GT)
34 #define GPIO_GROUP_MAX 2
36 #define GPIO_GROUP_MAX 1
41 u32 or; /* Output Control */
42 u32 tcr; /* Tri-State Control */
43 u32 osl; /* Output Select 16..31 */
44 u32 osh; /* Output Select 0..15 */
45 u32 tsl; /* Tri-State Select 16..31 */
46 u32 tsh; /* Tri-State Select 0..15 */
47 u32 odr; /* Open Drain */
49 u32 rr1; /* Receive Register 1 */
50 u32 rr2; /* Receive Register 2 */
51 u32 rr3; /* Receive Register 3 */
53 u32 is1l; /* Input Select 1 16..31 */
54 u32 is1h; /* Input Select 1 0..15 */
55 u32 is2l; /* Input Select 2 16..31 */
56 u32 is2h; /* Input Select 2 0..15 */
57 u32 is3l; /* Input Select 3 16..31 */
58 u32 is3h; /* Input Select 3 0..15 */
62 #define GPIOx_OR 0x00 /* GPIO Output Register */
63 #define GPIOx_TCR 0x04 /* GPIO Three-State Control Register */
64 #define GPIOx_OSL 0x08 /* GPIO Output Select Register (Bits 0-31) */
65 #define GPIOx_OSH 0x0C /* GPIO Ouput Select Register (Bits 32-63) */
66 #define GPIOx_TSL 0x10 /* GPIO Three-State Select Register (Bits 0-31) */
67 #define GPIOx_TSH 0x14 /* GPIO Three-State Select Register (Bits 32-63) */
68 #define GPIOx_ODR 0x18 /* GPIO Open drain Register */
69 #define GPIOx_IR 0x1C /* GPIO Input Register */
70 #define GPIOx_RR1 0x20 /* GPIO Receive Register 1 */
71 #define GPIOx_RR2 0x24 /* GPIO Receive Register 2 */
72 #define GPIOx_RR3 0x28 /* GPIO Receive Register 3 */
73 #define GPIOx_IS1L 0x30 /* GPIO Input Select Register 1 (Bits 0-31) */
74 #define GPIOx_IS1H 0x34 /* GPIO Input Select Register 1 (Bits 32-63) */
75 #define GPIOx_IS2L 0x38 /* GPIO Input Select Register 2 (Bits 0-31) */
76 #define GPIOx_IS2H 0x3C /* GPIO Input Select Register 2 (Bits 32-63) */
77 #define GPIOx_IS3L 0x40 /* GPIO Input Select Register 3 (Bits 0-31) */
78 #define GPIOx_IS3H 0x44 /* GPIO Input Select Register 3 (Bits 32-63) */
80 #define GPIO_OR(x) (x+GPIOx_OR) /* GPIO Output Register */
81 #define GPIO_TCR(x) (x+GPIOx_TCR) /* GPIO Three-State Control Register */
82 #define GPIO_OS(x) (x+GPIOx_OSL) /* GPIO Output Select Register High or Low */
83 #define GPIO_TS(x) (x+GPIOx_TSL) /* GPIO Three-state Control Reg High or Low */
84 #define GPIO_IS1(x) (x+GPIOx_IS1L) /* GPIO Input register1 High or Low */
85 #define GPIO_IS2(x) (x+GPIOx_IS2L) /* GPIO Input register2 High or Low */
86 #define GPIO_IS3(x) (x+GPIOx_IS3L) /* GPIO Input register3 High or Low */
92 #define GPIO_ALT1_SEL 0x40000000
93 #define GPIO_ALT2_SEL 0x80000000
94 #define GPIO_ALT3_SEL 0xc0000000
95 #define GPIO_IN_SEL 0x40000000
96 #define GPIO_MASK 0xc0000000
98 #define GPIO_VAL(gpio) (0x80000000 >> (gpio))
101 typedef enum gpio_select { GPIO_SEL, GPIO_ALT1, GPIO_ALT2, GPIO_ALT3 } gpio_select_t;
102 typedef enum gpio_driver { GPIO_DIS, GPIO_IN, GPIO_OUT, GPIO_BI } gpio_driver_t;
103 typedef enum gpio_out { GPIO_OUT_0, GPIO_OUT_1, GPIO_OUT_NO_CHG } gpio_out_t;
106 unsigned long add; /* gpio core base address */
107 gpio_driver_t in_out; /* Driver Setting */
108 gpio_select_t alt_nb; /* Selected Alternate */
109 gpio_out_t out_val;/* Default Output Value */
113 void gpio_config(int pin, int in_out, int gpio_alt, int out_val);
114 void gpio_write_bit(int pin, int val);
115 int gpio_read_out_bit(int pin);
116 int gpio_read_in_bit(int pin);
117 void gpio_set_chip_configuration(void);
119 #endif /* __ASM_PPC_GPIO_H */