1 /*
2 * arch/arm/mach-iop32x/glantank.c
3 *
4 * Board support code for the GLAN Tank.
5 *
6 * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
7 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15 #include <linux/mm.h>
16 #include <linux/init.h>
17 #include <linux/f75375s.h>
18 #include <linux/kernel.h>
19 #include <linux/pci.h>
20 #include <linux/pm.h>
21 #include <linux/string.h>
22 #include <linux/slab.h>
23 #include <linux/serial_core.h>
24 #include <linux/serial_8250.h>
25 #include <linux/mtd/physmap.h>
26 #include <linux/i2c.h>
27 #include <linux/platform_device.h>
28 #include <linux/io.h>
29 #include <mach/hardware.h>
30 #include <asm/irq.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/pci.h>
34 #include <asm/mach/time.h>
35 #include <asm/mach-types.h>
36 #include <asm/page.h>
37 #include <mach/time.h>
38
39 /*
40 * GLAN Tank timer tick configuration.
41 */
glantank_timer_init(void)42 static void __init glantank_timer_init(void)
43 {
44 /* 33.333 MHz crystal. */
45 iop_init_time(200000000);
46 }
47
48 static struct sys_timer glantank_timer = {
49 .init = glantank_timer_init,
50 .offset = iop_gettimeoffset,
51 };
52
53
54 /*
55 * GLAN Tank I/O.
56 */
57 static struct map_desc glantank_io_desc[] __initdata = {
58 { /* on-board devices */
59 .virtual = GLANTANK_UART,
60 .pfn = __phys_to_pfn(GLANTANK_UART),
61 .length = 0x00100000,
62 .type = MT_DEVICE
63 },
64 };
65
glantank_map_io(void)66 void __init glantank_map_io(void)
67 {
68 iop3xx_map_io();
69 iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
70 }
71
72
73 /*
74 * GLAN Tank PCI.
75 */
76 #define INTA IRQ_IOP32X_XINT0
77 #define INTB IRQ_IOP32X_XINT1
78 #define INTC IRQ_IOP32X_XINT2
79 #define INTD IRQ_IOP32X_XINT3
80
81 static int __init
glantank_pci_map_irq(struct pci_dev * dev,u8 slot,u8 pin)82 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
83 {
84 static int pci_irq_table[][4] = {
85 /*
86 * PCI IDSEL/INTPIN->INTLINE
87 * A B C D
88 */
89 {INTD, INTD, INTD, INTD}, /* UART (8250) */
90 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
91 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
92 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
93 };
94
95 BUG_ON(pin < 1 || pin > 4);
96
97 return pci_irq_table[slot % 4][pin - 1];
98 }
99
100 static struct hw_pci glantank_pci __initdata = {
101 .swizzle = pci_std_swizzle,
102 .nr_controllers = 1,
103 .setup = iop3xx_pci_setup,
104 .preinit = iop3xx_pci_preinit,
105 .scan = iop3xx_pci_scan_bus,
106 .map_irq = glantank_pci_map_irq,
107 };
108
glantank_pci_init(void)109 static int __init glantank_pci_init(void)
110 {
111 if (machine_is_glantank())
112 pci_common_init(&glantank_pci);
113
114 return 0;
115 }
116
117 subsys_initcall(glantank_pci_init);
118
119
120 /*
121 * GLAN Tank machine initialization.
122 */
123 static struct physmap_flash_data glantank_flash_data = {
124 .width = 2,
125 };
126
127 static struct resource glantank_flash_resource = {
128 .start = 0xf0000000,
129 .end = 0xf007ffff,
130 .flags = IORESOURCE_MEM,
131 };
132
133 static struct platform_device glantank_flash_device = {
134 .name = "physmap-flash",
135 .id = 0,
136 .dev = {
137 .platform_data = &glantank_flash_data,
138 },
139 .num_resources = 1,
140 .resource = &glantank_flash_resource,
141 };
142
143 static struct plat_serial8250_port glantank_serial_port[] = {
144 {
145 .mapbase = GLANTANK_UART,
146 .membase = (char *)GLANTANK_UART,
147 .irq = IRQ_IOP32X_XINT3,
148 .flags = UPF_SKIP_TEST,
149 .iotype = UPIO_MEM,
150 .regshift = 0,
151 .uartclk = 1843200,
152 },
153 { },
154 };
155
156 static struct resource glantank_uart_resource = {
157 .start = GLANTANK_UART,
158 .end = GLANTANK_UART + 7,
159 .flags = IORESOURCE_MEM,
160 };
161
162 static struct platform_device glantank_serial_device = {
163 .name = "serial8250",
164 .id = PLAT8250_DEV_PLATFORM,
165 .dev = {
166 .platform_data = glantank_serial_port,
167 },
168 .num_resources = 1,
169 .resource = &glantank_uart_resource,
170 };
171
172 static struct f75375s_platform_data glantank_f75375s = {
173 .pwm = { 255, 255 },
174 .pwm_enable = { 0, 0 },
175 };
176
177 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
178 {
179 I2C_BOARD_INFO("rs5c372a", 0x32),
180 },
181 {
182 I2C_BOARD_INFO("f75375", 0x2e),
183 .platform_data = &glantank_f75375s,
184 },
185 };
186
glantank_power_off(void)187 static void glantank_power_off(void)
188 {
189 __raw_writeb(0x01, 0xfe8d0004);
190
191 while (1)
192 ;
193 }
194
glantank_init_machine(void)195 static void __init glantank_init_machine(void)
196 {
197 platform_device_register(&iop3xx_i2c0_device);
198 platform_device_register(&iop3xx_i2c1_device);
199 platform_device_register(&glantank_flash_device);
200 platform_device_register(&glantank_serial_device);
201 platform_device_register(&iop3xx_dma_0_channel);
202 platform_device_register(&iop3xx_dma_1_channel);
203
204 i2c_register_board_info(0, glantank_i2c_devices,
205 ARRAY_SIZE(glantank_i2c_devices));
206
207 pm_power_off = glantank_power_off;
208 }
209
210 MACHINE_START(GLANTANK, "GLAN Tank")
211 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
212 .phys_io = GLANTANK_UART,
213 .io_pg_offst = ((GLANTANK_UART) >> 18) & 0xfffc,
214 .boot_params = 0xa0000100,
215 .map_io = glantank_map_io,
216 .init_irq = iop32x_init_irq,
217 .timer = &glantank_timer,
218 .init_machine = glantank_init_machine,
219 MACHINE_END
220