1 /* 2 * OMAP15xx specific gpio init 3 * 4 * Copyright (C) 2010 Texas Instruments Incorporated - https://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 #include <linux/platform_data/gpio-omap.h> 21 22 #include <mach/irqs.h> 23 24 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE 25 #define OMAP1510_GPIO_BASE 0xFFFCE000 26 27 /* gpio1 */ 28 static struct resource omap15xx_mpu_gpio_resources[] = { 29 { 30 .start = OMAP1_MPUIO_VBASE, 31 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, 32 .flags = IORESOURCE_MEM, 33 }, 34 { 35 .start = INT_MPUIO, 36 .flags = IORESOURCE_IRQ, 37 }, 38 }; 39 40 static struct omap_gpio_reg_offs omap15xx_mpuio_regs = { 41 .revision = USHRT_MAX, 42 .direction = OMAP_MPUIO_IO_CNTL, 43 .datain = OMAP_MPUIO_INPUT_LATCH, 44 .dataout = OMAP_MPUIO_OUTPUT, 45 .irqstatus = OMAP_MPUIO_GPIO_INT, 46 .irqenable = OMAP_MPUIO_GPIO_MASKIT, 47 .irqenable_inv = true, 48 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE, 49 }; 50 51 static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = { 52 .is_mpuio = true, 53 .bank_width = 16, 54 .bank_stride = 1, 55 .regs = &omap15xx_mpuio_regs, 56 }; 57 58 static struct platform_device omap15xx_mpu_gpio = { 59 .name = "omap_gpio", 60 .id = 0, 61 .dev = { 62 .platform_data = &omap15xx_mpu_gpio_config, 63 }, 64 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), 65 .resource = omap15xx_mpu_gpio_resources, 66 }; 67 68 /* gpio2 */ 69 static struct resource omap15xx_gpio_resources[] = { 70 { 71 .start = OMAP1510_GPIO_BASE, 72 .end = OMAP1510_GPIO_BASE + SZ_2K - 1, 73 .flags = IORESOURCE_MEM, 74 }, 75 { 76 .start = INT_GPIO_BANK1, 77 .flags = IORESOURCE_IRQ, 78 }, 79 }; 80 81 static struct omap_gpio_reg_offs omap15xx_gpio_regs = { 82 .revision = USHRT_MAX, 83 .direction = OMAP1510_GPIO_DIR_CONTROL, 84 .datain = OMAP1510_GPIO_DATA_INPUT, 85 .dataout = OMAP1510_GPIO_DATA_OUTPUT, 86 .irqstatus = OMAP1510_GPIO_INT_STATUS, 87 .irqenable = OMAP1510_GPIO_INT_MASK, 88 .irqenable_inv = true, 89 .irqctrl = OMAP1510_GPIO_INT_CONTROL, 90 .pinctrl = OMAP1510_GPIO_PIN_CONTROL, 91 }; 92 93 static struct omap_gpio_platform_data omap15xx_gpio_config = { 94 .bank_width = 16, 95 .regs = &omap15xx_gpio_regs, 96 }; 97 98 static struct platform_device omap15xx_gpio = { 99 .name = "omap_gpio", 100 .id = 1, 101 .dev = { 102 .platform_data = &omap15xx_gpio_config, 103 }, 104 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources), 105 .resource = omap15xx_gpio_resources, 106 }; 107 108 /* 109 * omap15xx_gpio_init needs to be done before 110 * machine_init functions access gpio APIs. 111 * Hence omap15xx_gpio_init is a postcore_initcall. 112 */ 113 static int __init omap15xx_gpio_init(void) 114 { 115 if (!cpu_is_omap15xx()) 116 return -EINVAL; 117 118 platform_device_register(&omap15xx_mpu_gpio); 119 platform_device_register(&omap15xx_gpio); 120 121 return 0; 122 } 123 postcore_initcall(omap15xx_gpio_init); 124