/* * OMAP16xx specific gpio init * * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ * * Author: * Charulatha V * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation version 2. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #define OMAP1610_GPIO1_BASE 0xfffbe400 #define OMAP1610_GPIO2_BASE 0xfffbec00 #define OMAP1610_GPIO3_BASE 0xfffbb400 #define OMAP1610_GPIO4_BASE 0xfffbbc00 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE /* smart idle, enable wakeup */ #define SYSCONFIG_WORD 0x14 /* mpu gpio */ static struct __initdata resource omap16xx_mpu_gpio_resources[] = { { .start = OMAP1_MPUIO_VBASE, .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, .flags = IORESOURCE_MEM, }, { .start = INT_MPUIO, .flags = IORESOURCE_IRQ, }, }; static struct omap_gpio_reg_offs omap16xx_mpuio_regs = { .revision = USHRT_MAX, .direction = OMAP_MPUIO_IO_CNTL, .datain = OMAP_MPUIO_INPUT_LATCH, .dataout = OMAP_MPUIO_OUTPUT, .irqstatus = OMAP_MPUIO_GPIO_INT, .irqenable = OMAP_MPUIO_GPIO_MASKIT, .irqenable_inv = true, .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE, }; static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = { .virtual_irq_start = IH_MPUIO_BASE, .is_mpuio = true, .bank_width = 16, .bank_stride = 1, .regs = &omap16xx_mpuio_regs, }; static struct platform_device omap16xx_mpu_gpio = { .name = "omap_gpio", .id = 0, .dev = { .platform_data = &omap16xx_mpu_gpio_config, }, .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources), .resource = omap16xx_mpu_gpio_resources, }; /* gpio1 */ static struct __initdata resource omap16xx_gpio1_resources[] = { { .start = OMAP1610_GPIO1_BASE, .end = OMAP1610_GPIO1_BASE + SZ_2K - 1, .flags = IORESOURCE_MEM, }, { .start = INT_GPIO_BANK1, .flags = IORESOURCE_IRQ, }, }; static struct omap_gpio_reg_offs omap16xx_gpio_regs = { .revision = OMAP1610_GPIO_REVISION, .direction = OMAP1610_GPIO_DIRECTION, .set_dataout = OMAP1610_GPIO_SET_DATAOUT, .clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT, .datain = OMAP1610_GPIO_DATAIN, .dataout = OMAP1610_GPIO_DATAOUT, .irqstatus = OMAP1610_GPIO_IRQSTATUS1, .irqenable = OMAP1610_GPIO_IRQENABLE1, .set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1, .clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1, .wkup_en = OMAP1610_GPIO_WAKEUPENABLE, .edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1, .edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2, }; static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = { .virtual_irq_start = IH_GPIO_BASE, .bank_width = 16, .regs = &omap16xx_gpio_regs, }; static struct platform_device omap16xx_gpio1 = { .name = "omap_gpio", .id = 1, .dev = { .platform_data = &omap16xx_gpio1_config, }, .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources), .resource = omap16xx_gpio1_resources, }; /* gpio2 */ static struct __initdata resource omap16xx_gpio2_resources[] = { { .start = OMAP1610_GPIO2_BASE, .end = OMAP1610_GPIO2_BASE + SZ_2K - 1, .flags = IORESOURCE_MEM, }, { .start = INT_1610_GPIO_BANK2, .flags = IORESOURCE_IRQ, }, }; static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = { .virtual_irq_start = IH_GPIO_BASE + 16, .bank_width = 16, .regs = &omap16xx_gpio_regs, }; static struct platform_device omap16xx_gpio2 = { .name = "omap_gpio", .id = 2, .dev = { .platform_data = &omap16xx_gpio2_config, }, .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources), .resource = omap16xx_gpio2_resources, }; /* gpio3 */ static struct __initdata resource omap16xx_gpio3_resources[] = { { .start = OMAP1610_GPIO3_BASE, .end = OMAP1610_GPIO3_BASE + SZ_2K - 1, .flags = IORESOURCE_MEM, }, { .start = INT_1610_GPIO_BANK3, .flags = IORESOURCE_IRQ, }, }; static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = { .virtual_irq_start = IH_GPIO_BASE + 32, .bank_width = 16, .regs = &omap16xx_gpio_regs, }; static struct platform_device omap16xx_gpio3 = { .name = "omap_gpio", .id = 3, .dev = { .platform_data = &omap16xx_gpio3_config, }, .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources), .resource = omap16xx_gpio3_resources, }; /* gpio4 */ static struct __initdata resource omap16xx_gpio4_resources[] = { { .start = OMAP1610_GPIO4_BASE, .end = OMAP1610_GPIO4_BASE + SZ_2K - 1, .flags = IORESOURCE_MEM, }, { .start = INT_1610_GPIO_BANK4, .flags = IORESOURCE_IRQ, }, }; static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = { .virtual_irq_start = IH_GPIO_BASE + 48, .bank_width = 16, .regs = &omap16xx_gpio_regs, }; static struct platform_device omap16xx_gpio4 = { .name = "omap_gpio", .id = 4, .dev = { .platform_data = &omap16xx_gpio4_config, }, .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources), .resource = omap16xx_gpio4_resources, }; static struct __initdata platform_device * omap16xx_gpio_dev[] = { &omap16xx_mpu_gpio, &omap16xx_gpio1, &omap16xx_gpio2, &omap16xx_gpio3, &omap16xx_gpio4, }; /* * omap16xx_gpio_init needs to be done before * machine_init functions access gpio APIs. * Hence omap16xx_gpio_init is a postcore_initcall. */ static int __init omap16xx_gpio_init(void) { int i; void __iomem *base; struct resource *res; struct platform_device *pdev; struct omap_gpio_platform_data *pdata; if (!cpu_is_omap16xx()) return -EINVAL; for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) { pdev = omap16xx_gpio_dev[i]; pdata = pdev->dev.platform_data; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (unlikely(!res)) { dev_err(&pdev->dev, "Invalid mem resource.\n"); return -ENODEV; } base = ioremap(res->start, resource_size(res)); if (unlikely(!base)) { dev_err(&pdev->dev, "ioremap failed.\n"); return -ENOMEM; } __raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG); iounmap(base); /* * Enable system clock for GPIO module. * The CAM_CLK_CTRL *is* really the right place. */ omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL); platform_device_register(omap16xx_gpio_dev[i]); } return 0; } postcore_initcall(omap16xx_gpio_init);