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