Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
glantank.c
Go to the documentation of this file.
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 <[email protected]>
7  * Copyright (C) 2006 Lennert Buytenhek <[email protected]>
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/serial_core.h>
23 #include <linux/serial_8250.h>
24 #include <linux/mtd/physmap.h>
25 #include <linux/i2c.h>
26 #include <linux/platform_device.h>
27 #include <linux/io.h>
28 #include <mach/hardware.h>
29 #include <asm/irq.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/pci.h>
33 #include <asm/mach/time.h>
34 #include <asm/mach-types.h>
35 #include <asm/page.h>
36 #include <mach/time.h>
37 
38 /*
39  * GLAN Tank timer tick configuration.
40  */
41 static void __init glantank_timer_init(void)
42 {
43  /* 33.333 MHz crystal. */
44  iop_init_time(200000000);
45 }
46 
47 static struct sys_timer glantank_timer = {
48  .init = glantank_timer_init,
49 };
50 
51 
52 /*
53  * GLAN Tank I/O.
54  */
55 static struct map_desc glantank_io_desc[] __initdata = {
56  { /* on-board devices */
57  .virtual = GLANTANK_UART,
59  .length = 0x00100000,
60  .type = MT_DEVICE
61  },
62 };
63 
65 {
66  iop3xx_map_io();
67  iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
68 }
69 
70 
71 /*
72  * GLAN Tank PCI.
73  */
74 #define INTA IRQ_IOP32X_XINT0
75 #define INTB IRQ_IOP32X_XINT1
76 #define INTC IRQ_IOP32X_XINT2
77 #define INTD IRQ_IOP32X_XINT3
78 
79 static int __init
80 glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
81 {
82  static int pci_irq_table[][4] = {
83  /*
84  * PCI IDSEL/INTPIN->INTLINE
85  * A B C D
86  */
87  {INTD, INTD, INTD, INTD}, /* UART (8250) */
88  {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
89  {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
90  {INTC, INTC, INTC, INTC}, /* USB (NEC) */
91  };
92 
93  BUG_ON(pin < 1 || pin > 4);
94 
95  return pci_irq_table[slot % 4][pin - 1];
96 }
97 
98 static struct hw_pci glantank_pci __initdata = {
99  .nr_controllers = 1,
100  .ops = &iop3xx_ops,
101  .setup = iop3xx_pci_setup,
102  .preinit = iop3xx_pci_preinit,
103  .map_irq = glantank_pci_map_irq,
104 };
105 
106 static int __init glantank_pci_init(void)
107 {
108  if (machine_is_glantank())
109  pci_common_init(&glantank_pci);
110 
111  return 0;
112 }
113 
114 subsys_initcall(glantank_pci_init);
115 
116 
117 /*
118  * GLAN Tank machine initialization.
119  */
120 static struct physmap_flash_data glantank_flash_data = {
121  .width = 2,
122 };
123 
124 static struct resource glantank_flash_resource = {
125  .start = 0xf0000000,
126  .end = 0xf007ffff,
127  .flags = IORESOURCE_MEM,
128 };
129 
130 static struct platform_device glantank_flash_device = {
131  .name = "physmap-flash",
132  .id = 0,
133  .dev = {
134  .platform_data = &glantank_flash_data,
135  },
136  .num_resources = 1,
137  .resource = &glantank_flash_resource,
138 };
139 
140 static struct plat_serial8250_port glantank_serial_port[] = {
141  {
142  .mapbase = GLANTANK_UART,
143  .membase = (char *)GLANTANK_UART,
145  .flags = UPF_SKIP_TEST,
146  .iotype = UPIO_MEM,
147  .regshift = 0,
148  .uartclk = 1843200,
149  },
150  { },
151 };
152 
153 static struct resource glantank_uart_resource = {
154  .start = GLANTANK_UART,
155  .end = GLANTANK_UART + 7,
156  .flags = IORESOURCE_MEM,
157 };
158 
159 static struct platform_device glantank_serial_device = {
160  .name = "serial8250",
161  .id = PLAT8250_DEV_PLATFORM,
162  .dev = {
163  .platform_data = glantank_serial_port,
164  },
165  .num_resources = 1,
166  .resource = &glantank_uart_resource,
167 };
168 
169 static struct f75375s_platform_data glantank_f75375s = {
170  .pwm = { 255, 255 },
171  .pwm_enable = { 0, 0 },
172 };
173 
174 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
175  {
176  I2C_BOARD_INFO("rs5c372a", 0x32),
177  },
178  {
179  I2C_BOARD_INFO("f75375", 0x2e),
180  .platform_data = &glantank_f75375s,
181  },
182 };
183 
184 static void glantank_power_off(void)
185 {
186  __raw_writeb(0x01, IOMEM(0xfe8d0004));
187 
188  while (1)
189  ;
190 }
191 
192 static void __init glantank_init_machine(void)
193 {
196  platform_device_register(&glantank_flash_device);
197  platform_device_register(&glantank_serial_device);
200 
201  i2c_register_board_info(0, glantank_i2c_devices,
202  ARRAY_SIZE(glantank_i2c_devices));
203 
204  pm_power_off = glantank_power_off;
205 }
206 
207 MACHINE_START(GLANTANK, "GLAN Tank")
208  /* Maintainer: Lennert Buytenhek <[email protected]> */
209  .atag_offset = 0x100,
210  .map_io = glantank_map_io,
211  .init_irq = iop32x_init_irq,
212  .timer = &glantank_timer,
213  .init_machine = glantank_init_machine,
214  .restart = iop3xx_restart,