1 /*
2 * OMAP15xx specific gpio init
3 *
4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * Author:
7 * Charulatha V <charu@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation version 2.
12 *
13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
14 * kind, whether express or implied; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19 #include <linux/gpio.h>
20
21 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
22 #define OMAP1510_GPIO_BASE 0xFFFCE000
23
24 /* gpio1 */
25 static struct __initdata resource omap15xx_mpu_gpio_resources[] = {
26 {
27 .start = OMAP1_MPUIO_VBASE,
28 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
29 .flags = IORESOURCE_MEM,
30 },
31 {
32 .start = INT_MPUIO,
33 .flags = IORESOURCE_IRQ,
34 },
35 };
36
37 static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = {
38 .virtual_irq_start = IH_MPUIO_BASE,
39 .bank_type = METHOD_MPUIO,
40 .bank_width = 16,
41 .bank_stride = 1,
42 };
43
44 static struct __initdata platform_device omap15xx_mpu_gpio = {
45 .name = "omap_gpio",
46 .id = 0,
47 .dev = {
48 .platform_data = &omap15xx_mpu_gpio_config,
49 },
50 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
51 .resource = omap15xx_mpu_gpio_resources,
52 };
53
54 /* gpio2 */
55 static struct __initdata resource omap15xx_gpio_resources[] = {
56 {
57 .start = OMAP1510_GPIO_BASE,
58 .end = OMAP1510_GPIO_BASE + SZ_2K - 1,
59 .flags = IORESOURCE_MEM,
60 },
61 {
62 .start = INT_GPIO_BANK1,
63 .flags = IORESOURCE_IRQ,
64 },
65 };
66
67 static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = {
68 .virtual_irq_start = IH_GPIO_BASE,
69 .bank_type = METHOD_GPIO_1510,
70 .bank_width = 16,
71 };
72
73 static struct __initdata platform_device omap15xx_gpio = {
74 .name = "omap_gpio",
75 .id = 1,
76 .dev = {
77 .platform_data = &omap15xx_gpio_config,
78 },
79 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
80 .resource = omap15xx_gpio_resources,
81 };
82
83 /*
84 * omap15xx_gpio_init needs to be done before
85 * machine_init functions access gpio APIs.
86 * Hence omap15xx_gpio_init is a postcore_initcall.
87 */
omap15xx_gpio_init(void)88 static int __init omap15xx_gpio_init(void)
89 {
90 if (!cpu_is_omap15xx())
91 return -EINVAL;
92
93 platform_device_register(&omap15xx_mpu_gpio);
94 platform_device_register(&omap15xx_gpio);
95
96 gpio_bank_count = 2;
97 return 0;
98 }
99 postcore_initcall(omap15xx_gpio_init);
100