Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / arch / arm / mach-mx3 / mx31lite.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/kernel.h>
24 #include <linux/memory.h>
25 #include <linux/platform_device.h>
26 #include <linux/gpio.h>
27 #include <linux/smsc911x.h>
28
29 #include <mach/hardware.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/time.h>
33 #include <asm/mach/map.h>
34 #include <mach/common.h>
35 #include <asm/page.h>
36 #include <asm/setup.h>
37 #include <mach/board-mx31lite.h>
38 #include <mach/imx-uart.h>
39 #include <mach/iomux-mx3.h>
40 #include <mach/irqs.h>
41 #include <mach/mxc_nand.h>
42 #include "devices.h"
43
44 /*
45  * This file contains the board-specific initialization routines.
46  */
47
48 static unsigned int mx31lite_pins[] = {
49         /* UART1 */
50         MX31_PIN_CTS1__CTS1,
51         MX31_PIN_RTS1__RTS1,
52         MX31_PIN_TXD1__TXD1,
53         MX31_PIN_RXD1__RXD1,
54         /* LAN9117 IRQ pin */
55         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
56 };
57
58 static struct imxuart_platform_data uart_pdata = {
59         .flags = IMXUART_HAVE_RTSCTS,
60 };
61
62 static struct mxc_nand_platform_data mx31lite_nand_board_info = {
63         .width = 1,
64         .hw_ecc = 1,
65 };
66
67 static struct smsc911x_platform_config smsc911x_config = {
68         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
69         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
70         .flags          = SMSC911X_USE_16BIT,
71 };
72
73 static struct resource smsc911x_resources[] = {
74         {
75                 .start          = CS4_BASE_ADDR,
76                 .end            = CS4_BASE_ADDR + 0x100,
77                 .flags          = IORESOURCE_MEM,
78         }, {
79                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
80                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
81                 .flags          = IORESOURCE_IRQ,
82         },
83 };
84
85 static struct platform_device smsc911x_device = {
86         .name           = "smsc911x",
87         .id             = -1,
88         .num_resources  = ARRAY_SIZE(smsc911x_resources),
89         .resource       = smsc911x_resources,
90         .dev            = {
91                 .platform_data = &smsc911x_config,
92         },
93 };
94
95 /*
96  * This structure defines the MX31 memory map.
97  */
98 static struct map_desc mx31lite_io_desc[] __initdata = {
99         {
100                 .virtual = SPBA0_BASE_ADDR_VIRT,
101                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
102                 .length = SPBA0_SIZE,
103                 .type = MT_DEVICE_NONSHARED
104         }, {
105                 .virtual = CS4_BASE_ADDR_VIRT,
106                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
107                 .length = CS4_SIZE,
108                 .type = MT_DEVICE
109         }
110 };
111
112 /*
113  * Set up static virtual mappings.
114  */
115 void __init mx31lite_map_io(void)
116 {
117         mx31_map_io();
118         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
119 }
120
121 /*
122  * Board specific initialization.
123  */
124 static void __init mxc_board_init(void)
125 {
126         int ret;
127
128         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
129                                       "mx31lite");
130
131         mxc_register_device(&mxc_uart_device0, &uart_pdata);
132         mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
133
134         /* SMSC9117 IRQ pin */
135         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
136         if (ret)
137                 pr_warning("could not get LAN irq gpio\n");
138         else {
139                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
140                 platform_device_register(&smsc911x_device);
141         }
142 }
143
144 static void __init mx31lite_timer_init(void)
145 {
146         mx31_clocks_init(26000000);
147 }
148
149 struct sys_timer mx31lite_timer = {
150         .init   = mx31lite_timer_init,
151 };
152
153 /*
154  * The following uses standard kernel macros defined in arch.h in order to
155  * initialize __mach_desc_MX31LITE data structure.
156  */
157
158 MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
159         /* Maintainer: Freescale Semiconductor, Inc. */
160         .phys_io        = AIPS1_BASE_ADDR,
161         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
162         .boot_params    = PHYS_OFFSET + 0x100,
163         .map_io         = mx31lite_map_io,
164         .init_irq       = mx31_init_irq,
165         .init_machine   = mxc_board_init,
166         .timer          = &mx31lite_timer,
167 MACHINE_END