1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * OMAP15xx specific gpio init
4 *
5 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
6 *
7 * Author:
8 * Charulatha V <charu@ti.com>
9 */
10
11 #include <linux/platform_data/gpio-omap.h>
12 #include <linux/soc/ti/omap1-soc.h>
13 #include <asm/irq.h>
14
15 #include "irqs.h"
16
17 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
18 #define OMAP1510_GPIO_BASE 0xFFFCE000
19
20 /* gpio1 */
21 static struct resource omap15xx_mpu_gpio_resources[] = {
22 {
23 .start = OMAP1_MPUIO_VBASE,
24 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
25 .flags = IORESOURCE_MEM,
26 },
27 {
28 .start = INT_MPUIO,
29 .flags = IORESOURCE_IRQ,
30 },
31 };
32
33 static struct omap_gpio_reg_offs omap15xx_mpuio_regs = {
34 .revision = USHRT_MAX,
35 .direction = OMAP_MPUIO_IO_CNTL,
36 .datain = OMAP_MPUIO_INPUT_LATCH,
37 .dataout = OMAP_MPUIO_OUTPUT,
38 .irqstatus = OMAP_MPUIO_GPIO_INT,
39 .irqenable = OMAP_MPUIO_GPIO_MASKIT,
40 .irqenable_inv = true,
41 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
42 };
43
44 static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = {
45 .is_mpuio = true,
46 .bank_width = 16,
47 .bank_stride = 1,
48 .regs = &omap15xx_mpuio_regs,
49 };
50
51 static struct platform_device omap15xx_mpu_gpio = {
52 .name = "omap_gpio",
53 .id = 0,
54 .dev = {
55 .platform_data = &omap15xx_mpu_gpio_config,
56 },
57 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
58 .resource = omap15xx_mpu_gpio_resources,
59 };
60
61 /* gpio2 */
62 static struct resource omap15xx_gpio_resources[] = {
63 {
64 .start = OMAP1510_GPIO_BASE,
65 .end = OMAP1510_GPIO_BASE + SZ_2K - 1,
66 .flags = IORESOURCE_MEM,
67 },
68 {
69 .start = INT_GPIO_BANK1,
70 .flags = IORESOURCE_IRQ,
71 },
72 };
73
74 static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
75 .revision = USHRT_MAX,
76 .direction = OMAP1510_GPIO_DIR_CONTROL,
77 .datain = OMAP1510_GPIO_DATA_INPUT,
78 .dataout = OMAP1510_GPIO_DATA_OUTPUT,
79 .irqstatus = OMAP1510_GPIO_INT_STATUS,
80 .irqenable = OMAP1510_GPIO_INT_MASK,
81 .irqenable_inv = true,
82 .irqctrl = OMAP1510_GPIO_INT_CONTROL,
83 .pinctrl = OMAP1510_GPIO_PIN_CONTROL,
84 };
85
86 static struct omap_gpio_platform_data omap15xx_gpio_config = {
87 .bank_width = 16,
88 .regs = &omap15xx_gpio_regs,
89 };
90
91 static struct platform_device omap15xx_gpio = {
92 .name = "omap_gpio",
93 .id = 1,
94 .dev = {
95 .platform_data = &omap15xx_gpio_config,
96 },
97 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
98 .resource = omap15xx_gpio_resources,
99 };
100
101 /*
102 * omap15xx_gpio_init needs to be done before
103 * machine_init functions access gpio APIs.
104 * Hence omap15xx_gpio_init is a postcore_initcall.
105 */
omap15xx_gpio_init(void)106 static int __init omap15xx_gpio_init(void)
107 {
108 if (!cpu_is_omap15xx())
109 return -EINVAL;
110
111 platform_device_register(&omap15xx_mpu_gpio);
112 platform_device_register(&omap15xx_gpio);
113
114 return 0;
115 }
116 postcore_initcall(omap15xx_gpio_init);
117