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>
21 #define OMAP1610_GPIO1_BASE 0xfffbe400
22 #define OMAP1610_GPIO2_BASE 0xfffbec00
23 #define OMAP1610_GPIO3_BASE 0xfffbb400
24 #define OMAP1610_GPIO4_BASE 0xfffbbc00
25 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
27 /* smart idle, enable wakeup */
28 #define SYSCONFIG_WORD 0x14
31 static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
33 .start = OMAP1_MPUIO_VBASE,
34 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
35 .flags = IORESOURCE_MEM,
39 .flags = IORESOURCE_IRQ,
43 static struct omap_gpio_reg_offs omap16xx_mpuio_regs = {
44 .revision = USHRT_MAX,
45 .direction = OMAP_MPUIO_IO_CNTL,
46 .datain = OMAP_MPUIO_INPUT_LATCH,
47 .dataout = OMAP_MPUIO_OUTPUT,
48 .irqstatus = OMAP_MPUIO_GPIO_INT,
49 .irqenable = OMAP_MPUIO_GPIO_MASKIT,
50 .irqenable_inv = true,
51 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
54 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
58 .regs = &omap16xx_mpuio_regs,
61 static struct platform_device omap16xx_mpu_gpio = {
65 .platform_data = &omap16xx_mpu_gpio_config,
67 .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
68 .resource = omap16xx_mpu_gpio_resources,
72 static struct __initdata resource omap16xx_gpio1_resources[] = {
74 .start = OMAP1610_GPIO1_BASE,
75 .end = OMAP1610_GPIO1_BASE + SZ_2K - 1,
76 .flags = IORESOURCE_MEM,
79 .start = INT_GPIO_BANK1,
80 .flags = IORESOURCE_IRQ,
84 static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
85 .revision = OMAP1610_GPIO_REVISION,
86 .direction = OMAP1610_GPIO_DIRECTION,
87 .set_dataout = OMAP1610_GPIO_SET_DATAOUT,
88 .clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT,
89 .datain = OMAP1610_GPIO_DATAIN,
90 .dataout = OMAP1610_GPIO_DATAOUT,
91 .irqstatus = OMAP1610_GPIO_IRQSTATUS1,
92 .irqenable = OMAP1610_GPIO_IRQENABLE1,
93 .set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1,
94 .clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1,
95 .wkup_en = OMAP1610_GPIO_WAKEUPENABLE,
96 .edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1,
97 .edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2,
100 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
102 .regs = &omap16xx_gpio_regs,
105 static struct platform_device omap16xx_gpio1 = {
109 .platform_data = &omap16xx_gpio1_config,
111 .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
112 .resource = omap16xx_gpio1_resources,
116 static struct __initdata resource omap16xx_gpio2_resources[] = {
118 .start = OMAP1610_GPIO2_BASE,
119 .end = OMAP1610_GPIO2_BASE + SZ_2K - 1,
120 .flags = IORESOURCE_MEM,
123 .start = INT_1610_GPIO_BANK2,
124 .flags = IORESOURCE_IRQ,
128 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
130 .regs = &omap16xx_gpio_regs,
133 static struct platform_device omap16xx_gpio2 = {
137 .platform_data = &omap16xx_gpio2_config,
139 .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
140 .resource = omap16xx_gpio2_resources,
144 static struct __initdata resource omap16xx_gpio3_resources[] = {
146 .start = OMAP1610_GPIO3_BASE,
147 .end = OMAP1610_GPIO3_BASE + SZ_2K - 1,
148 .flags = IORESOURCE_MEM,
151 .start = INT_1610_GPIO_BANK3,
152 .flags = IORESOURCE_IRQ,
156 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
158 .regs = &omap16xx_gpio_regs,
161 static struct platform_device omap16xx_gpio3 = {
165 .platform_data = &omap16xx_gpio3_config,
167 .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
168 .resource = omap16xx_gpio3_resources,
172 static struct __initdata resource omap16xx_gpio4_resources[] = {
174 .start = OMAP1610_GPIO4_BASE,
175 .end = OMAP1610_GPIO4_BASE + SZ_2K - 1,
176 .flags = IORESOURCE_MEM,
179 .start = INT_1610_GPIO_BANK4,
180 .flags = IORESOURCE_IRQ,
184 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
186 .regs = &omap16xx_gpio_regs,
189 static struct platform_device omap16xx_gpio4 = {
193 .platform_data = &omap16xx_gpio4_config,
195 .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
196 .resource = omap16xx_gpio4_resources,
199 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
208 * omap16xx_gpio_init needs to be done before
209 * machine_init functions access gpio APIs.
210 * Hence omap16xx_gpio_init is a postcore_initcall.
212 static int __init omap16xx_gpio_init(void)
216 struct resource *res;
217 struct platform_device *pdev;
218 struct omap_gpio_platform_data *pdata;
220 if (!cpu_is_omap16xx())
224 * Enable system clock for GPIO module.
225 * The CAM_CLK_CTRL *is* really the right place.
227 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
230 for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
231 pdev = omap16xx_gpio_dev[i];
232 pdata = pdev->dev.platform_data;
234 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
235 if (unlikely(!res)) {
236 dev_err(&pdev->dev, "Invalid mem resource.\n");
240 base = ioremap(res->start, resource_size(res));
241 if (unlikely(!base)) {
242 dev_err(&pdev->dev, "ioremap failed.\n");
246 __raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG);
249 platform_device_register(omap16xx_gpio_dev[i]);
254 postcore_initcall(omap16xx_gpio_init);