1/*
2 * amcore.c -- Support for Sysam AMCORE open board
3 *
4 * (C) Copyright 2016, Angelo Dureghello <angelo@sysam.it>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License.  See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/device.h>
12#include <linux/platform_device.h>
13#include <linux/dm9000.h>
14#include <linux/irq.h>
15#include <linux/interrupt.h>
16#include <linux/mtd/mtd.h>
17#include <linux/mtd/map.h>
18#include <linux/mtd/partitions.h>
19#include <linux/mtd/physmap.h>
20#include <linux/i2c.h>
21
22#include <asm/coldfire.h>
23#include <asm/mcfsim.h>
24#include <asm/io.h>
25
26#if IS_ENABLED(CONFIG_DM9000)
27
28#define DM9000_IRQ	25
29#define DM9000_ADDR	0x30000000
30
31/*
32 * DEVICES and related device RESOURCES
33 */
34static struct resource dm9000_resources[] = {
35	/* physical address of the address register (CMD [A2] to 0)*/
36	[0] = {
37		.start  = DM9000_ADDR,
38		.end    = DM9000_ADDR,
39		.flags  = IORESOURCE_MEM,
40	},
41	/*
42	 * physical address of the data register (CMD [A2] to 1),
43	 * driver wants a range >=4 to assume a 32bit data bus
44	 */
45	[1] = {
46		.start  = DM9000_ADDR + 4,
47		.end    = DM9000_ADDR + 7,
48		.flags  = IORESOURCE_MEM,
49	},
50	/* IRQ line the device's interrupt pin is connected to */
51	[2] = {
52		.start  = DM9000_IRQ,
53		.end    = DM9000_IRQ,
54		.flags  = IORESOURCE_IRQ,
55	},
56};
57
58static struct dm9000_plat_data dm9000_platdata = {
59	.flags		= DM9000_PLATF_32BITONLY,
60};
61
62static struct platform_device dm9000_device = {
63	.name           = "dm9000",
64	.id             = 0,
65	.num_resources  = ARRAY_SIZE(dm9000_resources),
66	.resource       = dm9000_resources,
67	.dev = {
68		.platform_data = &dm9000_platdata,
69	}
70};
71#endif
72
73static void __init dm9000_pre_init(void)
74{
75	/* Set the dm9000 interrupt to be auto-vectored */
76	mcf_autovector(DM9000_IRQ);
77}
78
79/*
80 * Partitioning of parallel NOR flash (39VF3201B)
81 */
82static struct mtd_partition amcore_partitions[] = {
83	{
84		.name	= "U-Boot (128K)",
85		.size	= 0x20000,
86		.offset	= 0x0
87	},
88	{
89		.name	= "Kernel+ROMfs (2994K)",
90		.size	= 0x2E0000,
91		.offset	= MTDPART_OFS_APPEND
92	},
93	{
94		.name	= "Flash Free Space (1024K)",
95		.size	= MTDPART_SIZ_FULL,
96		.offset	= MTDPART_OFS_APPEND
97	}
98};
99
100static struct physmap_flash_data flash_data = {
101	.parts		= amcore_partitions,
102	.nr_parts	= ARRAY_SIZE(amcore_partitions),
103	.width		= 2,
104};
105
106static struct resource flash_resource = {
107	.start		= 0xffc00000,
108	.end		= 0xffffffff,
109	.flags		= IORESOURCE_MEM,
110};
111
112static struct platform_device flash_device = {
113	.name		= "physmap-flash",
114	.id		= -1,
115	.resource	= &flash_resource,
116	.num_resources	= 1,
117	.dev		= {
118		.platform_data	= &flash_data,
119	},
120};
121
122static struct platform_device rtc_device = {
123	.name	= "rtc-ds1307",
124	.id	= -1,
125};
126
127static struct i2c_board_info amcore_i2c_info[] __initdata = {
128	{
129		I2C_BOARD_INFO("ds1338", 0x68),
130	},
131};
132
133static struct platform_device *amcore_devices[] __initdata = {
134#if IS_ENABLED(CONFIG_DM9000)
135	&dm9000_device,
136#endif
137	&flash_device,
138	&rtc_device,
139};
140
141static int __init init_amcore(void)
142{
143#if IS_ENABLED(CONFIG_DM9000)
144	dm9000_pre_init();
145#endif
146
147	/* Add i2c RTC Dallas chip supprt */
148	i2c_register_board_info(0, amcore_i2c_info,
149				ARRAY_SIZE(amcore_i2c_info));
150
151	platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices));
152
153	return 0;
154}
155
156arch_initcall(init_amcore);
157