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 = {
55 .virtual_irq_start = IH_MPUIO_BASE,
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 = {
102 .virtual_irq_start = IH_GPIO_BASE,
104 .regs = &omap16xx_gpio_regs,
107 static struct platform_device omap16xx_gpio1 = {
111 .platform_data = &omap16xx_gpio1_config,
113 .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
114 .resource = omap16xx_gpio1_resources,
118 static struct __initdata resource omap16xx_gpio2_resources[] = {
120 .start = OMAP1610_GPIO2_BASE,
121 .end = OMAP1610_GPIO2_BASE + SZ_2K - 1,
122 .flags = IORESOURCE_MEM,
125 .start = INT_1610_GPIO_BANK2,
126 .flags = IORESOURCE_IRQ,
130 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
131 .virtual_irq_start = IH_GPIO_BASE + 16,
133 .regs = &omap16xx_gpio_regs,
136 static struct platform_device omap16xx_gpio2 = {
140 .platform_data = &omap16xx_gpio2_config,
142 .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
143 .resource = omap16xx_gpio2_resources,
147 static struct __initdata resource omap16xx_gpio3_resources[] = {
149 .start = OMAP1610_GPIO3_BASE,
150 .end = OMAP1610_GPIO3_BASE + SZ_2K - 1,
151 .flags = IORESOURCE_MEM,
154 .start = INT_1610_GPIO_BANK3,
155 .flags = IORESOURCE_IRQ,
159 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
160 .virtual_irq_start = IH_GPIO_BASE + 32,
162 .regs = &omap16xx_gpio_regs,
165 static struct platform_device omap16xx_gpio3 = {
169 .platform_data = &omap16xx_gpio3_config,
171 .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
172 .resource = omap16xx_gpio3_resources,
176 static struct __initdata resource omap16xx_gpio4_resources[] = {
178 .start = OMAP1610_GPIO4_BASE,
179 .end = OMAP1610_GPIO4_BASE + SZ_2K - 1,
180 .flags = IORESOURCE_MEM,
183 .start = INT_1610_GPIO_BANK4,
184 .flags = IORESOURCE_IRQ,
188 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
189 .virtual_irq_start = IH_GPIO_BASE + 48,
191 .regs = &omap16xx_gpio_regs,
194 static struct platform_device omap16xx_gpio4 = {
198 .platform_data = &omap16xx_gpio4_config,
200 .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
201 .resource = omap16xx_gpio4_resources,
204 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
213 * omap16xx_gpio_init needs to be done before
214 * machine_init functions access gpio APIs.
215 * Hence omap16xx_gpio_init is a postcore_initcall.
217 static int __init omap16xx_gpio_init(void)
221 struct resource *res;
222 struct platform_device *pdev;
223 struct omap_gpio_platform_data *pdata;
225 if (!cpu_is_omap16xx())
229 * Enable system clock for GPIO module.
230 * The CAM_CLK_CTRL *is* really the right place.
232 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
235 for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
236 pdev = omap16xx_gpio_dev[i];
237 pdata = pdev->dev.platform_data;
239 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
240 if (unlikely(!res)) {
241 dev_err(&pdev->dev, "Invalid mem resource.\n");
245 base = ioremap(res->start, resource_size(res));
246 if (unlikely(!base)) {
247 dev_err(&pdev->dev, "ioremap failed.\n");
251 __raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG);
254 platform_device_register(omap16xx_gpio_dev[i]);
259 postcore_initcall(omap16xx_gpio_init);