101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* arch/arm/plat-iop/i2c.c
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*
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* Author: Nicolas Pitre <nico@cam.org>
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* Copyright (C) 2001 MontaVista Software, Inc.
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* Copyright (C) 2004 Intel Corporation.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/major.h>
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#include <linux/fs.h>
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#include <linux/platform_device.h>
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#include <linux/serial.h>
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#include <linux/tty.h>
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#include <linux/serial_core.h>
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#include <linux/io.h>
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#include <linux/gpio/machine.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/mach/map.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <mach/hardware.h>
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#include <asm/hardware/iop3xx.h>
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#include <asm/mach/arch.h>
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#ifdef CONFIG_ARCH_IOP32X
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#define IRQ_IOP3XX_I2C_0 IRQ_IOP32X_I2C_0
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#define IRQ_IOP3XX_I2C_1 IRQ_IOP32X_I2C_1
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#endif
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#ifdef CONFIG_ARCH_IOP33X
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#define IRQ_IOP3XX_I2C_0 IRQ_IOP33X_I2C_0
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#define IRQ_IOP3XX_I2C_1 IRQ_IOP33X_I2C_1
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#endif
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/*
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* Each of the I2C busses have corresponding GPIO lines, and the driver
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* need to access these directly to drive the bus low at times.
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*/
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struct gpiod_lookup_table iop3xx_i2c0_gpio_lookup = {
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.dev_id = "IOP3xx-I2C.0",
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.table = {
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GPIO_LOOKUP("gpio-iop", 7, "scl", GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP("gpio-iop", 6, "sda", GPIO_ACTIVE_HIGH),
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{ }
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},
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};
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struct gpiod_lookup_table iop3xx_i2c1_gpio_lookup = {
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.dev_id = "IOP3xx-I2C.1",
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.table = {
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GPIO_LOOKUP("gpio-iop", 5, "scl", GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP("gpio-iop", 4, "sda", GPIO_ACTIVE_HIGH),
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{ }
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},
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};
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static struct resource iop3xx_i2c0_resources[] = {
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[0] = {
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.start = 0xfffff680,
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.end = 0xfffff697,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_IOP3XX_I2C_0,
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.end = IRQ_IOP3XX_I2C_0,
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.flags = IORESOURCE_IRQ,
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},
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};
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struct platform_device iop3xx_i2c0_device = {
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.name = "IOP3xx-I2C",
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.id = 0,
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.num_resources = 2,
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.resource = iop3xx_i2c0_resources,
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};
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static struct resource iop3xx_i2c1_resources[] = {
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[0] = {
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.start = 0xfffff6a0,
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.end = 0xfffff6b7,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_IOP3XX_I2C_1,
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.end = IRQ_IOP3XX_I2C_1,
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.flags = IORESOURCE_IRQ,
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}
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};
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struct platform_device iop3xx_i2c1_device = {
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.name = "IOP3xx-I2C",
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.id = 1,
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.num_resources = 2,
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.resource = iop3xx_i2c1_resources,
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};
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