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
em7210_timer_init(void)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 };
46
47 /*
48 * EM7210 RTC
49 */
50 static struct i2c_board_info __initdata em7210_i2c_devices[] = {
51 {
52 I2C_BOARD_INFO("rs5c372a", 0x32),
53 },
54 };
55
56 /*
57 * EM7210 I/O
58 */
59 static 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
em7210_map_io(void)68 void __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
83 static int __init
em7210_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)84 em7210_pci_map_irq(const 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
105 static 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
em7210_pci_init(void)114 static int __init em7210_pci_init(void)
115 {
116 if (machine_is_em7210())
117 pci_common_init(&em7210_pci);
118
119 return 0;
120 }
121
122 subsys_initcall(em7210_pci_init);
123
124
125 /*
126 * EM7210 Flash
127 */
128 static struct physmap_flash_data em7210_flash_data = {
129 .width = 2,
130 };
131
132 static struct resource em7210_flash_resource = {
133 .start = 0xf0000000,
134 .end = 0xf1ffffff,
135 .flags = IORESOURCE_MEM,
136 };
137
138 static 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 */
154 static 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
167 static struct resource em7210_uart_resource = {
168 .start = IQ31244_UART,
169 .end = IQ31244_UART + 7,
170 .flags = IORESOURCE_MEM,
171 };
172
173 static 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
em7210_power_off(void)183 void em7210_power_off(void)
184 {
185 *IOP3XX_GPOE &= 0xfe;
186 *IOP3XX_GPOD |= 0x01;
187 }
188
em7210_init_machine(void)189 static 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
205 MACHINE_START(EM7210, "Lanner EM7210")
206 .atag_offset = 0x100,
207 .map_io = em7210_map_io,
208 .init_irq = iop32x_init_irq,
209 .timer = &em7210_timer,
210 .init_machine = em7210_init_machine,
211 .restart = iop3xx_restart,
212 MACHINE_END
213