1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * OMAP15xx specific gpio init 4 * 5 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/ 6 * 7 * Author: 8 * Charulatha V <charu@ti.com> 9 */ 10 11 #include <linux/gpio.h> 12 #include <linux/platform_data/gpio-omap.h> 13 #include <linux/soc/ti/omap1-soc.h> 14 15 #include "irqs.h" 16 17 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE 18 #define OMAP1510_GPIO_BASE 0xFFFCE000 19 20 /* gpio1 */ 21 static struct resource omap15xx_mpu_gpio_resources[] = { 22 { 23 .start = OMAP1_MPUIO_VBASE, 24 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, 25 .flags = IORESOURCE_MEM, 26 }, 27 { 28 .start = INT_MPUIO, 29 .flags = IORESOURCE_IRQ, 30 }, 31 }; 32 33 static struct omap_gpio_reg_offs omap15xx_mpuio_regs = { 34 .revision = USHRT_MAX, 35 .direction = OMAP_MPUIO_IO_CNTL, 36 .datain = OMAP_MPUIO_INPUT_LATCH, 37 .dataout = OMAP_MPUIO_OUTPUT, 38 .irqstatus = OMAP_MPUIO_GPIO_INT, 39 .irqenable = OMAP_MPUIO_GPIO_MASKIT, 40 .irqenable_inv = true, 41 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE, 42 }; 43 44 static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = { 45 .is_mpuio = true, 46 .bank_width = 16, 47 .bank_stride = 1, 48 .regs = &omap15xx_mpuio_regs, 49 }; 50 51 static struct platform_device omap15xx_mpu_gpio = { 52 .name = "omap_gpio", 53 .id = 0, 54 .dev = { 55 .platform_data = &omap15xx_mpu_gpio_config, 56 }, 57 .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), 58 .resource = omap15xx_mpu_gpio_resources, 59 }; 60 61 /* gpio2 */ 62 static struct resource omap15xx_gpio_resources[] = { 63 { 64 .start = OMAP1510_GPIO_BASE, 65 .end = OMAP1510_GPIO_BASE + SZ_2K - 1, 66 .flags = IORESOURCE_MEM, 67 }, 68 { 69 .start = INT_GPIO_BANK1, 70 .flags = IORESOURCE_IRQ, 71 }, 72 }; 73 74 static struct omap_gpio_reg_offs omap15xx_gpio_regs = { 75 .revision = USHRT_MAX, 76 .direction = OMAP1510_GPIO_DIR_CONTROL, 77 .datain = OMAP1510_GPIO_DATA_INPUT, 78 .dataout = OMAP1510_GPIO_DATA_OUTPUT, 79 .irqstatus = OMAP1510_GPIO_INT_STATUS, 80 .irqenable = OMAP1510_GPIO_INT_MASK, 81 .irqenable_inv = true, 82 .irqctrl = OMAP1510_GPIO_INT_CONTROL, 83 .pinctrl = OMAP1510_GPIO_PIN_CONTROL, 84 }; 85 86 static struct omap_gpio_platform_data omap15xx_gpio_config = { 87 .bank_width = 16, 88 .regs = &omap15xx_gpio_regs, 89 }; 90 91 static struct platform_device omap15xx_gpio = { 92 .name = "omap_gpio", 93 .id = 1, 94 .dev = { 95 .platform_data = &omap15xx_gpio_config, 96 }, 97 .num_resources = ARRAY_SIZE(omap15xx_gpio_resources), 98 .resource = omap15xx_gpio_resources, 99 }; 100 101 /* 102 * omap15xx_gpio_init needs to be done before 103 * machine_init functions access gpio APIs. 104 * Hence omap15xx_gpio_init is a postcore_initcall. 105 */ 106 static int __init omap15xx_gpio_init(void) 107 { 108 if (!cpu_is_omap15xx()) 109 return -EINVAL; 110 111 platform_device_register(&omap15xx_mpu_gpio); 112 platform_device_register(&omap15xx_gpio); 113 114 return 0; 115 } 116 postcore_initcall(omap15xx_gpio_init); 117