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a8135fcf AP |
1 | /* |
2 | * arch/arm/mach-iop32x/em7210.c | |
3 | * | |
4 | * Board support code for the Lanner EM7210 platforms. | |
5 | * | |
6 | * Based on arch/arm/mach-iop32x/iq31244.c file. | |
7 | * | |
8 | * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/mm.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/pm.h> | |
21 | #include <linux/serial_core.h> | |
22 | #include <linux/serial_8250.h> | |
23 | #include <linux/mtd/physmap.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <asm/hardware.h> | |
26 | #include <linux/io.h> | |
27 | #include <linux/irq.h> | |
28 | #include <asm/mach/arch.h> | |
29 | #include <asm/mach/map.h> | |
30 | #include <asm/mach/pci.h> | |
31 | #include <asm/mach/time.h> | |
32 | #include <asm/mach-types.h> | |
33 | #include <asm/arch/time.h> | |
34 | ||
35 | static void __init em7210_timer_init(void) | |
36 | { | |
37 | /* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */ | |
38 | /* 33.333 MHz crystal. */ | |
39 | iop_init_time(200000000); | |
40 | } | |
41 | ||
42 | static struct sys_timer em7210_timer = { | |
43 | .init = em7210_timer_init, | |
44 | .offset = iop_gettimeoffset, | |
45 | }; | |
46 | ||
47 | ||
48 | /* | |
49 | * EM7210 I/O | |
50 | */ | |
51 | static struct map_desc em7210_io_desc[] __initdata = { | |
52 | { /* on-board devices */ | |
53 | .virtual = IQ31244_UART, | |
54 | .pfn = __phys_to_pfn(IQ31244_UART), | |
55 | .length = 0x00100000, | |
56 | .type = MT_DEVICE, | |
57 | }, | |
58 | }; | |
59 | ||
60 | void __init em7210_map_io(void) | |
61 | { | |
62 | iop3xx_map_io(); | |
63 | iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc)); | |
64 | } | |
65 | ||
66 | ||
67 | /* | |
68 | * EM7210 PCI | |
69 | */ | |
70 | #define INTA IRQ_IOP32X_XINT0 | |
71 | #define INTB IRQ_IOP32X_XINT1 | |
72 | #define INTC IRQ_IOP32X_XINT2 | |
73 | #define INTD IRQ_IOP32X_XINT3 | |
74 | ||
75 | static int __init | |
76 | em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
77 | { | |
78 | static int pci_irq_table[][4] = { | |
79 | /* | |
80 | * PCI IDSEL/INTPIN->INTLINE | |
81 | * A B C D | |
82 | */ | |
83 | {INTB, INTB, INTB, INTB}, /* console / uart */ | |
84 | {INTA, INTA, INTA, INTA}, /* 1st 82541 */ | |
85 | {INTD, INTD, INTD, INTD}, /* 2nd 82541 */ | |
86 | {INTC, INTC, INTC, INTC}, /* GD31244 */ | |
87 | {INTD, INTA, INTA, INTA}, /* mini-PCI */ | |
88 | {INTD, INTC, INTA, INTA}, /* NEC USB */ | |
89 | }; | |
90 | ||
91 | if (pin < 1 || pin > 4) | |
92 | return -1; | |
93 | ||
94 | return pci_irq_table[slot % 6][pin - 1]; | |
95 | } | |
96 | ||
97 | static struct hw_pci em7210_pci __initdata = { | |
98 | .swizzle = pci_std_swizzle, | |
99 | .nr_controllers = 1, | |
100 | .setup = iop3xx_pci_setup, | |
101 | .preinit = iop3xx_pci_preinit, | |
102 | .scan = iop3xx_pci_scan_bus, | |
103 | .map_irq = em7210_pci_map_irq, | |
104 | }; | |
105 | ||
106 | static int __init em7210_pci_init(void) | |
107 | { | |
108 | if (machine_is_em7210()) | |
109 | pci_common_init(&em7210_pci); | |
110 | ||
111 | return 0; | |
112 | } | |
113 | ||
114 | subsys_initcall(em7210_pci_init); | |
115 | ||
116 | ||
117 | /* | |
118 | * EM7210 Flash | |
119 | */ | |
120 | static struct physmap_flash_data em7210_flash_data = { | |
121 | .width = 2, | |
122 | }; | |
123 | ||
124 | static struct resource em7210_flash_resource = { | |
125 | .start = 0xf0000000, | |
126 | .end = 0xf1ffffff, | |
127 | .flags = IORESOURCE_MEM, | |
128 | }; | |
129 | ||
130 | static struct platform_device em7210_flash_device = { | |
131 | .name = "physmap-flash", | |
132 | .id = 0, | |
133 | .dev = { | |
134 | .platform_data = &em7210_flash_data, | |
135 | }, | |
136 | .num_resources = 1, | |
137 | .resource = &em7210_flash_resource, | |
138 | }; | |
139 | ||
140 | ||
141 | /* | |
142 | * EM7210 UART | |
143 | * The physical address of the serial port is 0xfe800000, | |
144 | * so it can be used for physical and virtual address. | |
145 | */ | |
146 | static struct plat_serial8250_port em7210_serial_port[] = { | |
147 | { | |
148 | .mapbase = IQ31244_UART, | |
149 | .membase = (char *)IQ31244_UART, | |
150 | .irq = IRQ_IOP32X_XINT1, | |
151 | .flags = UPF_SKIP_TEST, | |
152 | .iotype = UPIO_MEM, | |
153 | .regshift = 0, | |
154 | .uartclk = 1843200, | |
155 | }, | |
156 | { }, | |
157 | }; | |
158 | ||
159 | static struct resource em7210_uart_resource = { | |
160 | .start = IQ31244_UART, | |
161 | .end = IQ31244_UART + 7, | |
162 | .flags = IORESOURCE_MEM, | |
163 | }; | |
164 | ||
165 | static struct platform_device em7210_serial_device = { | |
166 | .name = "serial8250", | |
167 | .id = PLAT8250_DEV_PLATFORM, | |
168 | .dev = { | |
169 | .platform_data = em7210_serial_port, | |
170 | }, | |
171 | .num_resources = 1, | |
172 | .resource = &em7210_uart_resource, | |
173 | }; | |
174 | ||
175 | void em7210_power_off(void) | |
176 | { | |
177 | *IOP3XX_GPOE &= 0xfe; | |
178 | *IOP3XX_GPOD |= 0x01; | |
179 | } | |
180 | ||
181 | static void __init em7210_init_machine(void) | |
182 | { | |
183 | platform_device_register(&em7210_serial_device); | |
184 | platform_device_register(&iop3xx_i2c0_device); | |
185 | platform_device_register(&iop3xx_i2c1_device); | |
186 | platform_device_register(&em7210_flash_device); | |
187 | platform_device_register(&iop3xx_dma_0_channel); | |
188 | platform_device_register(&iop3xx_dma_1_channel); | |
189 | ||
190 | ||
191 | pm_power_off = em7210_power_off; | |
192 | } | |
193 | ||
194 | MACHINE_START(EM7210, "Lanner EM7210") | |
195 | .phys_io = IQ31244_UART, | |
196 | .io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc, | |
197 | .boot_params = 0xa0000100, | |
198 | .map_io = em7210_map_io, | |
199 | .init_irq = iop32x_init_irq, | |
200 | .timer = &em7210_timer, | |
201 | .init_machine = em7210_init_machine, | |
202 | MACHINE_END |