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 omap_gpio_reg_offs omap15xx_mpuio_regs = {
38 .revision = USHRT_MAX,
39 .direction = OMAP_MPUIO_IO_CNTL,
40 .datain = OMAP_MPUIO_INPUT_LATCH,
41 .dataout = OMAP_MPUIO_OUTPUT,
42 .irqstatus = OMAP_MPUIO_GPIO_INT,
43 .irqenable = OMAP_MPUIO_GPIO_MASKIT,
44 .irqenable_inv = true,
45 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
46 };
47
48 static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = {
49 .virtual_irq_start = IH_MPUIO_BASE,
50 .is_mpuio = true,
51 .bank_width = 16,
52 .bank_stride = 1,
53 .regs = &omap15xx_mpuio_regs,
54 };
55
56 static struct platform_device omap15xx_mpu_gpio = {
57 .name = "omap_gpio",
58 .id = 0,
59 .dev = {
60 .platform_data = &omap15xx_mpu_gpio_config,
61 },
62 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
63 .resource = omap15xx_mpu_gpio_resources,
64 };
65
66 /* gpio2 */
67 static struct __initdata resource omap15xx_gpio_resources[] = {
68 {
69 .start = OMAP1510_GPIO_BASE,
70 .end = OMAP1510_GPIO_BASE + SZ_2K - 1,
71 .flags = IORESOURCE_MEM,
72 },
73 {
74 .start = INT_GPIO_BANK1,
75 .flags = IORESOURCE_IRQ,
76 },
77 };
78
79 static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
80 .revision = USHRT_MAX,
81 .direction = OMAP1510_GPIO_DIR_CONTROL,
82 .datain = OMAP1510_GPIO_DATA_INPUT,
83 .dataout = OMAP1510_GPIO_DATA_OUTPUT,
84 .irqstatus = OMAP1510_GPIO_INT_STATUS,
85 .irqenable = OMAP1510_GPIO_INT_MASK,
86 .irqenable_inv = true,
87 .irqctrl = OMAP1510_GPIO_INT_CONTROL,
88 .pinctrl = OMAP1510_GPIO_PIN_CONTROL,
89 };
90
91 static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = {
92 .virtual_irq_start = IH_GPIO_BASE,
93 .bank_width = 16,
94 .regs = &omap15xx_gpio_regs,
95 };
96
97 static struct platform_device omap15xx_gpio = {
98 .name = "omap_gpio",
99 .id = 1,
100 .dev = {
101 .platform_data = &omap15xx_gpio_config,
102 },
103 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
104 .resource = omap15xx_gpio_resources,
105 };
106
107 /*
108 * omap15xx_gpio_init needs to be done before
109 * machine_init functions access gpio APIs.
110 * Hence omap15xx_gpio_init is a postcore_initcall.
111 */
omap15xx_gpio_init(void)112 static int __init omap15xx_gpio_init(void)
113 {
114 if (!cpu_is_omap15xx())
115 return -EINVAL;
116
117 platform_device_register(&omap15xx_mpu_gpio);
118 platform_device_register(&omap15xx_gpio);
119
120 return 0;
121 }
122 postcore_initcall(omap15xx_gpio_init);
123