2 * OMAP16xx specific gpio init
4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
7 * Charulatha V <charu@ti.com>
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.
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.
19 #include <linux/gpio.h>
20 #include <linux/platform_data/gpio-omap.h>
22 #define OMAP1610_GPIO1_BASE 0xfffbe400
23 #define OMAP1610_GPIO2_BASE 0xfffbec00
24 #define OMAP1610_GPIO3_BASE 0xfffbb400
25 #define OMAP1610_GPIO4_BASE 0xfffbbc00
26 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
28 /* smart idle, enable wakeup */
29 #define SYSCONFIG_WORD 0x14
32 static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
34 .start = OMAP1_MPUIO_VBASE,
35 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
36 .flags = IORESOURCE_MEM,
40 .flags = IORESOURCE_IRQ,
44 static struct omap_gpio_reg_offs omap16xx_mpuio_regs = {
45 .revision = USHRT_MAX,
46 .direction = OMAP_MPUIO_IO_CNTL,
47 .datain = OMAP_MPUIO_INPUT_LATCH,
48 .dataout = OMAP_MPUIO_OUTPUT,
49 .irqstatus = OMAP_MPUIO_GPIO_INT,
50 .irqenable = OMAP_MPUIO_GPIO_MASKIT,
51 .irqenable_inv = true,
52 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
55 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
59 .regs = &omap16xx_mpuio_regs,
62 static struct platform_device omap16xx_mpu_gpio = {
66 .platform_data = &omap16xx_mpu_gpio_config,
68 .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
69 .resource = omap16xx_mpu_gpio_resources,
73 static struct __initdata resource omap16xx_gpio1_resources[] = {
75 .start = OMAP1610_GPIO1_BASE,
76 .end = OMAP1610_GPIO1_BASE + SZ_2K - 1,
77 .flags = IORESOURCE_MEM,
80 .start = INT_GPIO_BANK1,
81 .flags = IORESOURCE_IRQ,
85 static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
86 .revision = OMAP1610_GPIO_REVISION,
87 .direction = OMAP1610_GPIO_DIRECTION,
88 .set_dataout = OMAP1610_GPIO_SET_DATAOUT,
89 .clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT,
90 .datain = OMAP1610_GPIO_DATAIN,
91 .dataout = OMAP1610_GPIO_DATAOUT,
92 .irqstatus = OMAP1610_GPIO_IRQSTATUS1,
93 .irqenable = OMAP1610_GPIO_IRQENABLE1,
94 .set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1,
95 .clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1,
96 .wkup_en = OMAP1610_GPIO_WAKEUPENABLE,
97 .edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1,
98 .edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2,
101 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
103 .regs = &omap16xx_gpio_regs,
106 static struct platform_device omap16xx_gpio1 = {
110 .platform_data = &omap16xx_gpio1_config,
112 .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
113 .resource = omap16xx_gpio1_resources,
117 static struct __initdata resource omap16xx_gpio2_resources[] = {
119 .start = OMAP1610_GPIO2_BASE,
120 .end = OMAP1610_GPIO2_BASE + SZ_2K - 1,
121 .flags = IORESOURCE_MEM,
124 .start = INT_1610_GPIO_BANK2,
125 .flags = IORESOURCE_IRQ,
129 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
131 .regs = &omap16xx_gpio_regs,
134 static struct platform_device omap16xx_gpio2 = {
138 .platform_data = &omap16xx_gpio2_config,
140 .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
141 .resource = omap16xx_gpio2_resources,
145 static struct __initdata resource omap16xx_gpio3_resources[] = {
147 .start = OMAP1610_GPIO3_BASE,
148 .end = OMAP1610_GPIO3_BASE + SZ_2K - 1,
149 .flags = IORESOURCE_MEM,
152 .start = INT_1610_GPIO_BANK3,
153 .flags = IORESOURCE_IRQ,
157 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
159 .regs = &omap16xx_gpio_regs,
162 static struct platform_device omap16xx_gpio3 = {
166 .platform_data = &omap16xx_gpio3_config,
168 .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
169 .resource = omap16xx_gpio3_resources,
173 static struct __initdata resource omap16xx_gpio4_resources[] = {
175 .start = OMAP1610_GPIO4_BASE,
176 .end = OMAP1610_GPIO4_BASE + SZ_2K - 1,
177 .flags = IORESOURCE_MEM,
180 .start = INT_1610_GPIO_BANK4,
181 .flags = IORESOURCE_IRQ,
185 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
187 .regs = &omap16xx_gpio_regs,
190 static struct platform_device omap16xx_gpio4 = {
194 .platform_data = &omap16xx_gpio4_config,
196 .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
197 .resource = omap16xx_gpio4_resources,
200 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
209 * omap16xx_gpio_init needs to be done before
210 * machine_init functions access gpio APIs.
211 * Hence omap16xx_gpio_init is a postcore_initcall.
213 static int __init omap16xx_gpio_init(void)
217 struct resource *res;
218 struct platform_device *pdev;
219 struct omap_gpio_platform_data *pdata;
221 if (!cpu_is_omap16xx())
225 * Enable system clock for GPIO module.
226 * The CAM_CLK_CTRL *is* really the right place.
228 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
231 for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
232 pdev = omap16xx_gpio_dev[i];
233 pdata = pdev->dev.platform_data;
235 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
236 if (unlikely(!res)) {
237 dev_err(&pdev->dev, "Invalid mem resource.\n");
241 base = ioremap(res->start, resource_size(res));
242 if (unlikely(!base)) {
243 dev_err(&pdev->dev, "ioremap failed.\n");
247 __raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG);
250 platform_device_register(omap16xx_gpio_dev[i]);
255 postcore_initcall(omap16xx_gpio_init);