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 }; 46 47 static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = { 48 .virtual_irq_start = IH_MPUIO_BASE, 49 .bank_type = METHOD_MPUIO, 50 .bank_width = 16, 51 .bank_stride = 1, 52 .regs = &omap15xx_mpuio_regs, 53 }; 54 55 static struct __initdata platform_device omap15xx_mpu_gpio = { 56 .name = "omap_gpio", 57 .id = 0, 58 .dev = { 59 .platform_data = &omap15xx_mpu_gpio_config, 60 }, 61 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), 62 .resource = omap15xx_mpu_gpio_resources, 63 }; 64 65 /* gpio2 */ 66 static struct __initdata resource omap15xx_gpio_resources[] = { 67 { 68 .start = OMAP1510_GPIO_BASE, 69 .end = OMAP1510_GPIO_BASE + SZ_2K - 1, 70 .flags = IORESOURCE_MEM, 71 }, 72 { 73 .start = INT_GPIO_BANK1, 74 .flags = IORESOURCE_IRQ, 75 }, 76 }; 77 78 static struct omap_gpio_reg_offs omap15xx_gpio_regs = { 79 .revision = USHRT_MAX, 80 .direction = OMAP1510_GPIO_DIR_CONTROL, 81 .datain = OMAP1510_GPIO_DATA_INPUT, 82 .dataout = OMAP1510_GPIO_DATA_OUTPUT, 83 .irqstatus = OMAP1510_GPIO_INT_STATUS, 84 .irqenable = OMAP1510_GPIO_INT_MASK, 85 .irqenable_inv = true, 86 }; 87 88 static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = { 89 .virtual_irq_start = IH_GPIO_BASE, 90 .bank_type = METHOD_GPIO_1510, 91 .bank_width = 16, 92 .regs = &omap15xx_gpio_regs, 93 }; 94 95 static struct __initdata platform_device omap15xx_gpio = { 96 .name = "omap_gpio", 97 .id = 1, 98 .dev = { 99 .platform_data = &omap15xx_gpio_config, 100 }, 101 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources), 102 .resource = omap15xx_gpio_resources, 103 }; 104 105 /* 106 * omap15xx_gpio_init needs to be done before 107 * machine_init functions access gpio APIs. 108 * Hence omap15xx_gpio_init is a postcore_initcall. 109 */ 110 static int __init omap15xx_gpio_init(void) 111 { 112 if (!cpu_is_omap15xx()) 113 return -EINVAL; 114 115 platform_device_register(&omap15xx_mpu_gpio); 116 platform_device_register(&omap15xx_gpio); 117 118 gpio_bank_count = 2; 119 return 0; 120 } 121 postcore_initcall(omap15xx_gpio_init); 122