Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / arch / arm / mach-mx3 / mx31ads.c
1 /*
2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/types.h>
22 #include <linux/init.h>
23 #include <linux/clk.h>
24 #include <linux/serial_8250.h>
25
26 #include <asm/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/memory.h>
30 #include <asm/mach/map.h>
31 #include <asm/arch/common.h>
32
33 /*!
34  * @file mx31ads.c
35  *
36  * @brief This file contains the board-specific initialization routines.
37  *
38  * @ingroup System
39  */
40
41 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
42 /*!
43  * The serial port definition structure.
44  */
45 static struct plat_serial8250_port serial_platform_data[] = {
46         {
47                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
48                 .mapbase  = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTA),
49                 .irq      = EXPIO_INT_XUART_INTA,
50                 .uartclk  = 14745600,
51                 .regshift = 0,
52                 .iotype   = UPIO_MEM,
53                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
54         }, {
55                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
56                 .mapbase  = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTB),
57                 .irq      = EXPIO_INT_XUART_INTB,
58                 .uartclk  = 14745600,
59                 .regshift = 0,
60                 .iotype   = UPIO_MEM,
61                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
62         },
63         {},
64 };
65
66 static struct platform_device serial_device = {
67         .name   = "serial8250",
68         .id     = 0,
69         .dev    = {
70                 .platform_data = serial_platform_data,
71         },
72 };
73
74 static int __init mxc_init_extuart(void)
75 {
76         return platform_device_register(&serial_device);
77 }
78 #else
79 static inline int mxc_init_extuart(void)
80 {
81         return 0;
82 }
83 #endif
84
85 /*!
86  * This structure defines static mappings for the i.MX31ADS board.
87  */
88 static struct map_desc mx31ads_io_desc[] __initdata = {
89         {
90                 .virtual        = AIPS1_BASE_ADDR_VIRT,
91                 .pfn            = __phys_to_pfn(AIPS1_BASE_ADDR),
92                 .length         = AIPS1_SIZE,
93                 .type           = MT_NONSHARED_DEVICE
94         }, {
95                 .virtual        = SPBA0_BASE_ADDR_VIRT,
96                 .pfn            = __phys_to_pfn(SPBA0_BASE_ADDR),
97                 .length         = SPBA0_SIZE,
98                 .type           = MT_NONSHARED_DEVICE
99         }, {
100                 .virtual        = AIPS2_BASE_ADDR_VIRT,
101                 .pfn            = __phys_to_pfn(AIPS2_BASE_ADDR),
102                 .length         = AIPS2_SIZE,
103                 .type           = MT_NONSHARED_DEVICE
104         }, {
105                 .virtual        = CS4_BASE_ADDR_VIRT,
106                 .pfn            = __phys_to_pfn(CS4_BASE_ADDR),
107                 .length         = CS4_SIZE / 2,
108                 .type           = MT_DEVICE
109         },
110 };
111
112 /*!
113  * Set up static virtual mappings.
114  */
115 void __init mx31ads_map_io(void)
116 {
117         mxc_map_io();
118         iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
119 }
120
121 /*!
122  * Board specific initialization.
123  */
124 static void __init mxc_board_init(void)
125 {
126         mxc_init_extuart();
127 }
128
129 /*
130  * The following uses standard kernel macros defined in arch.h in order to
131  * initialize __mach_desc_MX31ADS data structure.
132  */
133 MACHINE_START(MX31ADS, "Freescale MX31ADS")
134         /* Maintainer: Freescale Semiconductor, Inc. */
135         .phys_io        = AIPS1_BASE_ADDR,
136         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
137         .boot_params    = PHYS_OFFSET + 0x100,
138         .map_io         = mx31ads_map_io,
139         .init_irq       = mxc_init_irq,
140         .init_machine   = mxc_board_init,
141         .timer          = &mxc_timer,
142 MACHINE_END