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 | */ |
34 | static 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 | |
58 | static struct dm9000_plat_data dm9000_platdata = { |
59 | .flags = DM9000_PLATF_32BITONLY, |
60 | }; |
61 | |
62 | static 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 | |
73 | static 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 | */ |
82 | static 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 | |
100 | static struct physmap_flash_data flash_data = { |
101 | .parts = amcore_partitions, |
102 | .nr_parts = ARRAY_SIZE(amcore_partitions), |
103 | .width = 2, |
104 | }; |
105 | |
106 | static struct resource flash_resource = { |
107 | .start = 0xffc00000, |
108 | .end = 0xffffffff, |
109 | .flags = IORESOURCE_MEM, |
110 | }; |
111 | |
112 | static 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 | |
122 | static struct platform_device rtc_device = { |
123 | .name = "rtc-ds1307" , |
124 | .id = -1, |
125 | }; |
126 | |
127 | static struct i2c_board_info amcore_i2c_info[] __initdata = { |
128 | { |
129 | I2C_BOARD_INFO("ds1338" , 0x68), |
130 | }, |
131 | }; |
132 | |
133 | static 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 | |
141 | static 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(busnum: 0, info: 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 | |
156 | arch_initcall(init_amcore); |
157 | |