1 /* 2 * OMAP15xx specific gpio init 3 * 4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ 5 * 6 * Author: 7 * Charulatha V <charu@ti.com> 8 * 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. 12 * 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. 17 */ 18 19 #include <linux/gpio.h> 20 21 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE 22 #define OMAP1510_GPIO_BASE 0xFFFCE000 23 24 /* gpio1 */ 25 static struct __initdata resource omap15xx_mpu_gpio_resources[] = { 26 { 27 .start = OMAP1_MPUIO_VBASE, 28 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, 29 .flags = IORESOURCE_MEM, 30 }, 31 { 32 .start = INT_MPUIO, 33 .flags = IORESOURCE_IRQ, 34 }, 35 }; 36 37 static struct omap_gpio_reg_offs omap15xx_mpuio_regs = { 38 .revision = USHRT_MAX, 39 .direction = OMAP_MPUIO_IO_CNTL, 40 .datain = OMAP_MPUIO_INPUT_LATCH, 41 .dataout = OMAP_MPUIO_OUTPUT, 42 .irqstatus = OMAP_MPUIO_GPIO_INT, 43 .irqenable = OMAP_MPUIO_GPIO_MASKIT, 44 .irqenable_inv = true, 45 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE, 46 }; 47 48 static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = { 49 .virtual_irq_start = IH_MPUIO_BASE, 50 .is_mpuio = true, 51 .bank_width = 16, 52 .bank_stride = 1, 53 .regs = &omap15xx_mpuio_regs, 54 }; 55 56 static struct platform_device omap15xx_mpu_gpio = { 57 .name = "omap_gpio", 58 .id = 0, 59 .dev = { 60 .platform_data = &omap15xx_mpu_gpio_config, 61 }, 62 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), 63 .resource = omap15xx_mpu_gpio_resources, 64 }; 65 66 /* gpio2 */ 67 static struct __initdata resource omap15xx_gpio_resources[] = { 68 { 69 .start = OMAP1510_GPIO_BASE, 70 .end = OMAP1510_GPIO_BASE + SZ_2K - 1, 71 .flags = IORESOURCE_MEM, 72 }, 73 { 74 .start = INT_GPIO_BANK1, 75 .flags = IORESOURCE_IRQ, 76 }, 77 }; 78 79 static struct omap_gpio_reg_offs omap15xx_gpio_regs = { 80 .revision = USHRT_MAX, 81 .direction = OMAP1510_GPIO_DIR_CONTROL, 82 .datain = OMAP1510_GPIO_DATA_INPUT, 83 .dataout = OMAP1510_GPIO_DATA_OUTPUT, 84 .irqstatus = OMAP1510_GPIO_INT_STATUS, 85 .irqenable = OMAP1510_GPIO_INT_MASK, 86 .irqenable_inv = true, 87 .irqctrl = OMAP1510_GPIO_INT_CONTROL, 88 .pinctrl = OMAP1510_GPIO_PIN_CONTROL, 89 }; 90 91 static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = { 92 .virtual_irq_start = IH_GPIO_BASE, 93 .bank_width = 16, 94 .regs = &omap15xx_gpio_regs, 95 }; 96 97 static struct platform_device omap15xx_gpio = { 98 .name = "omap_gpio", 99 .id = 1, 100 .dev = { 101 .platform_data = &omap15xx_gpio_config, 102 }, 103 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources), 104 .resource = omap15xx_gpio_resources, 105 }; 106 107 /* 108 * omap15xx_gpio_init needs to be done before 109 * machine_init functions access gpio APIs. 110 * Hence omap15xx_gpio_init is a postcore_initcall. 111 */ 112 static int __init omap15xx_gpio_init(void) 113 { 114 if (!cpu_is_omap15xx()) 115 return -EINVAL; 116 117 platform_device_register(&omap15xx_mpu_gpio); 118 platform_device_register(&omap15xx_gpio); 119 120 return 0; 121 } 122 postcore_initcall(omap15xx_gpio_init); 123