1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * arch/arm/plat-iop/i2c.c 4 * 5 * Author: Nicolas Pitre <nico@cam.org> 6 * Copyright (C) 2001 MontaVista Software, Inc. 7 * Copyright (C) 2004 Intel Corporation. 8 */ 9 10 #include <linux/mm.h> 11 #include <linux/init.h> 12 #include <linux/major.h> 13 #include <linux/fs.h> 14 #include <linux/platform_device.h> 15 #include <linux/serial.h> 16 #include <linux/tty.h> 17 #include <linux/serial_core.h> 18 #include <linux/io.h> 19 #include <linux/gpio/machine.h> 20 #include <asm/page.h> 21 #include <asm/mach/map.h> 22 #include <asm/setup.h> 23 #include <asm/memory.h> 24 #include <asm/mach/arch.h> 25 26 #include "hardware.h" 27 #include "iop3xx.h" 28 #include "irqs.h" 29 30 /* 31 * Each of the I2C busses have corresponding GPIO lines, and the driver 32 * need to access these directly to drive the bus low at times. 33 */ 34 35 struct gpiod_lookup_table iop3xx_i2c0_gpio_lookup = { 36 .dev_id = "IOP3xx-I2C.0", 37 .table = { 38 GPIO_LOOKUP("gpio-iop", 7, "scl", GPIO_ACTIVE_HIGH), 39 GPIO_LOOKUP("gpio-iop", 6, "sda", GPIO_ACTIVE_HIGH), 40 { } 41 }, 42 }; 43 44 struct gpiod_lookup_table iop3xx_i2c1_gpio_lookup = { 45 .dev_id = "IOP3xx-I2C.1", 46 .table = { 47 GPIO_LOOKUP("gpio-iop", 5, "scl", GPIO_ACTIVE_HIGH), 48 GPIO_LOOKUP("gpio-iop", 4, "sda", GPIO_ACTIVE_HIGH), 49 { } 50 }, 51 }; 52 53 static struct resource iop3xx_i2c0_resources[] = { 54 [0] = { 55 .start = 0xfffff680, 56 .end = 0xfffff697, 57 .flags = IORESOURCE_MEM, 58 }, 59 [1] = { 60 .start = IRQ_IOP32X_I2C_0, 61 .end = IRQ_IOP32X_I2C_0, 62 .flags = IORESOURCE_IRQ, 63 }, 64 }; 65 66 struct platform_device iop3xx_i2c0_device = { 67 .name = "IOP3xx-I2C", 68 .id = 0, 69 .num_resources = 2, 70 .resource = iop3xx_i2c0_resources, 71 }; 72 73 74 static struct resource iop3xx_i2c1_resources[] = { 75 [0] = { 76 .start = 0xfffff6a0, 77 .end = 0xfffff6b7, 78 .flags = IORESOURCE_MEM, 79 }, 80 [1] = { 81 .start = IRQ_IOP32X_I2C_1, 82 .end = IRQ_IOP32X_I2C_1, 83 .flags = IORESOURCE_IRQ, 84 } 85 }; 86 87 struct platform_device iop3xx_i2c1_device = { 88 .name = "IOP3xx-I2C", 89 .id = 1, 90 .num_resources = 2, 91 .resource = iop3xx_i2c1_resources, 92 }; 93