Root/arch/arm/mach-iop32x/em7210.c

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

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