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 <linux/i2c.h>
26 #include <mach/hardware.h>
27 #include <linux/io.h>
28 #include <linux/irq.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/pci.h>
32 #include <asm/mach/time.h>
33 #include <asm/mach-types.h>
34 #include <mach/time.h>
35
36 static void __init em7210_timer_init(void)
37 {
38 /* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
39 /* 33.333 MHz crystal. */
40 iop_init_time(200000000);
41 }
42
43 static struct sys_timer em7210_timer = {
44 .init = em7210_timer_init,
45 .offset = iop_gettimeoffset,
46 };
47
48 /*
49 * EM7210 RTC
50 */
51 static struct i2c_board_info __initdata em7210_i2c_devices[] = {
52 {
53 I2C_BOARD_INFO("rs5c372a", 0x32),
54 },
55 };
56
57 /*
58 * EM7210 I/O
59 */
60 static struct map_desc em7210_io_desc[] __initdata = {
61 { /* on-board devices */
62 .virtual = IQ31244_UART,
63 .pfn = __phys_to_pfn(IQ31244_UART),
64 .length = 0x00100000,
65 .type = MT_DEVICE,
66 },
67 };
68
69 void __init em7210_map_io(void)
70 {
71 iop3xx_map_io();
72 iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
73 }
74
75
76 /*
77 * EM7210 PCI
78 */
79 #define INTA IRQ_IOP32X_XINT0
80 #define INTB IRQ_IOP32X_XINT1
81 #define INTC IRQ_IOP32X_XINT2
82 #define INTD IRQ_IOP32X_XINT3
83
84 static int __init
85 em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
86 {
87 static int pci_irq_table[][4] = {
88 /*
89 * PCI IDSEL/INTPIN->INTLINE
90 * A B C D
91 */
92 {INTB, INTB, INTB, INTB}, /* console / uart */
93 {INTA, INTA, INTA, INTA}, /* 1st 82541 */
94 {INTD, INTD, INTD, INTD}, /* 2nd 82541 */
95 {INTC, INTC, INTC, INTC}, /* GD31244 */
96 {INTD, INTA, INTA, INTA}, /* mini-PCI */
97 {INTD, INTC, INTA, INTA}, /* NEC USB */
98 };
99
100 if (pin < 1 || pin > 4)
101 return -1;
102
103 return pci_irq_table[slot % 6][pin - 1];
104 }
105
106 static struct hw_pci em7210_pci __initdata = {
107 .swizzle = pci_std_swizzle,
108 .nr_controllers = 1,
109 .setup = iop3xx_pci_setup,
110 .preinit = iop3xx_pci_preinit,
111 .scan = iop3xx_pci_scan_bus,
112 .map_irq = em7210_pci_map_irq,
113 };
114
115 static int __init em7210_pci_init(void)
116 {
117 if (machine_is_em7210())
118 pci_common_init(&em7210_pci);
119
120 return 0;
121 }
122
123 subsys_initcall(em7210_pci_init);
124
125
126 /*
127 * EM7210 Flash
128 */
129 static struct physmap_flash_data em7210_flash_data = {
130 .width = 2,
131 };
132
133 static struct resource em7210_flash_resource = {
134 .start = 0xf0000000,
135 .end = 0xf1ffffff,
136 .flags = IORESOURCE_MEM,
137 };
138
139 static struct platform_device em7210_flash_device = {
140 .name = "physmap-flash",
141 .id = 0,
142 .dev = {
143 .platform_data = &em7210_flash_data,
144 },
145 .num_resources = 1,
146 .resource = &em7210_flash_resource,
147 };
148
149
150 /*
151 * EM7210 UART
152 * The physical address of the serial port is 0xfe800000,
153 * so it can be used for physical and virtual address.
154 */
155 static struct plat_serial8250_port em7210_serial_port[] = {
156 {
157 .mapbase = IQ31244_UART,
158 .membase = (char *)IQ31244_UART,
159 .irq = IRQ_IOP32X_XINT1,
160 .flags = UPF_SKIP_TEST,
161 .iotype = UPIO_MEM,
162 .regshift = 0,
163 .uartclk = 1843200,
164 },
165 { },
166 };
167
168 static struct resource em7210_uart_resource = {
169 .start = IQ31244_UART,
170 .end = IQ31244_UART + 7,
171 .flags = IORESOURCE_MEM,
172 };
173
174 static struct platform_device em7210_serial_device = {
175 .name = "serial8250",
176 .id = PLAT8250_DEV_PLATFORM,
177 .dev = {
178 .platform_data = em7210_serial_port,
179 },
180 .num_resources = 1,
181 .resource = &em7210_uart_resource,
182 };
183
184 void em7210_power_off(void)
185 {
186 *IOP3XX_GPOE &= 0xfe;
187 *IOP3XX_GPOD |= 0x01;
188 }
189
190 static void __init em7210_init_machine(void)
191 {
192 platform_device_register(&em7210_serial_device);
193 platform_device_register(&iop3xx_i2c0_device);
194 platform_device_register(&iop3xx_i2c1_device);
195 platform_device_register(&em7210_flash_device);
196 platform_device_register(&iop3xx_dma_0_channel);
197 platform_device_register(&iop3xx_dma_1_channel);
198
199 i2c_register_board_info(0, em7210_i2c_devices,
200 ARRAY_SIZE(em7210_i2c_devices));
201
202
203 pm_power_off = em7210_power_off;
204 }
205
206 MACHINE_START(EM7210, "Lanner EM7210")
207 .phys_io = IQ31244_UART,
208 .io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
209 .boot_params = 0xa0000100,
210 .map_io = em7210_map_io,
211 .init_irq = iop32x_init_irq,
212 .timer = &em7210_timer,
213 .init_machine = em7210_init_machine,
214 MACHINE_END
215
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