1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/arm/plat-iop/i2c.c 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Author: Nicolas Pitre <nico@cam.org> 6*4882a593Smuzhiyun * Copyright (C) 2001 MontaVista Software, Inc. 7*4882a593Smuzhiyun * Copyright (C) 2004 Intel Corporation. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/mm.h> 11*4882a593Smuzhiyun #include <linux/init.h> 12*4882a593Smuzhiyun #include <linux/major.h> 13*4882a593Smuzhiyun #include <linux/fs.h> 14*4882a593Smuzhiyun #include <linux/platform_device.h> 15*4882a593Smuzhiyun #include <linux/serial.h> 16*4882a593Smuzhiyun #include <linux/tty.h> 17*4882a593Smuzhiyun #include <linux/serial_core.h> 18*4882a593Smuzhiyun #include <linux/io.h> 19*4882a593Smuzhiyun #include <linux/gpio/machine.h> 20*4882a593Smuzhiyun #include <asm/page.h> 21*4882a593Smuzhiyun #include <asm/mach/map.h> 22*4882a593Smuzhiyun #include <asm/setup.h> 23*4882a593Smuzhiyun #include <asm/memory.h> 24*4882a593Smuzhiyun #include <asm/mach/arch.h> 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #include "hardware.h" 27*4882a593Smuzhiyun #include "iop3xx.h" 28*4882a593Smuzhiyun #include "irqs.h" 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun /* 31*4882a593Smuzhiyun * Each of the I2C busses have corresponding GPIO lines, and the driver 32*4882a593Smuzhiyun * need to access these directly to drive the bus low at times. 33*4882a593Smuzhiyun */ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun struct gpiod_lookup_table iop3xx_i2c0_gpio_lookup = { 36*4882a593Smuzhiyun .dev_id = "IOP3xx-I2C.0", 37*4882a593Smuzhiyun .table = { 38*4882a593Smuzhiyun GPIO_LOOKUP("gpio-iop", 7, "scl", GPIO_ACTIVE_HIGH), 39*4882a593Smuzhiyun GPIO_LOOKUP("gpio-iop", 6, "sda", GPIO_ACTIVE_HIGH), 40*4882a593Smuzhiyun { } 41*4882a593Smuzhiyun }, 42*4882a593Smuzhiyun }; 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun struct gpiod_lookup_table iop3xx_i2c1_gpio_lookup = { 45*4882a593Smuzhiyun .dev_id = "IOP3xx-I2C.1", 46*4882a593Smuzhiyun .table = { 47*4882a593Smuzhiyun GPIO_LOOKUP("gpio-iop", 5, "scl", GPIO_ACTIVE_HIGH), 48*4882a593Smuzhiyun GPIO_LOOKUP("gpio-iop", 4, "sda", GPIO_ACTIVE_HIGH), 49*4882a593Smuzhiyun { } 50*4882a593Smuzhiyun }, 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun static struct resource iop3xx_i2c0_resources[] = { 54*4882a593Smuzhiyun [0] = { 55*4882a593Smuzhiyun .start = 0xfffff680, 56*4882a593Smuzhiyun .end = 0xfffff697, 57*4882a593Smuzhiyun .flags = IORESOURCE_MEM, 58*4882a593Smuzhiyun }, 59*4882a593Smuzhiyun [1] = { 60*4882a593Smuzhiyun .start = IRQ_IOP32X_I2C_0, 61*4882a593Smuzhiyun .end = IRQ_IOP32X_I2C_0, 62*4882a593Smuzhiyun .flags = IORESOURCE_IRQ, 63*4882a593Smuzhiyun }, 64*4882a593Smuzhiyun }; 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun struct platform_device iop3xx_i2c0_device = { 67*4882a593Smuzhiyun .name = "IOP3xx-I2C", 68*4882a593Smuzhiyun .id = 0, 69*4882a593Smuzhiyun .num_resources = 2, 70*4882a593Smuzhiyun .resource = iop3xx_i2c0_resources, 71*4882a593Smuzhiyun }; 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun static struct resource iop3xx_i2c1_resources[] = { 75*4882a593Smuzhiyun [0] = { 76*4882a593Smuzhiyun .start = 0xfffff6a0, 77*4882a593Smuzhiyun .end = 0xfffff6b7, 78*4882a593Smuzhiyun .flags = IORESOURCE_MEM, 79*4882a593Smuzhiyun }, 80*4882a593Smuzhiyun [1] = { 81*4882a593Smuzhiyun .start = IRQ_IOP32X_I2C_1, 82*4882a593Smuzhiyun .end = IRQ_IOP32X_I2C_1, 83*4882a593Smuzhiyun .flags = IORESOURCE_IRQ, 84*4882a593Smuzhiyun } 85*4882a593Smuzhiyun }; 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun struct platform_device iop3xx_i2c1_device = { 88*4882a593Smuzhiyun .name = "IOP3xx-I2C", 89*4882a593Smuzhiyun .id = 1, 90*4882a593Smuzhiyun .num_resources = 2, 91*4882a593Smuzhiyun .resource = iop3xx_i2c1_resources, 92*4882a593Smuzhiyun }; 93