Fix for KVMFORNFV-23(Fuel installed KVM kernel blank screens on boot).
[kvmfornfv.git] / kernel / arch / arm / mach-s3c24xx / common-smdk.c
1 /* linux/arch/arm/plat-s3c24xx/common-smdk.c
2  *
3  * Copyright (c) 2006 Simtec Electronics
4  *      Ben Dooks <ben@simtec.co.uk>
5  *
6  * Common code for SMDK2410 and SMDK2440 boards
7  *
8  * http://www.fluff.org/ben/smdk2440/
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 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/timer.h>
20 #include <linux/init.h>
21 #include <linux/gpio.h>
22 #include <linux/device.h>
23 #include <linux/platform_device.h>
24
25 #include <linux/mtd/mtd.h>
26 #include <linux/mtd/nand.h>
27 #include <linux/mtd/nand_ecc.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/io.h>
30
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/irq.h>
34
35 #include <asm/mach-types.h>
36 #include <mach/hardware.h>
37 #include <asm/irq.h>
38
39 #include <mach/regs-gpio.h>
40 #include <mach/gpio-samsung.h>
41 #include <linux/platform_data/leds-s3c24xx.h>
42 #include <linux/platform_data/mtd-nand-s3c2410.h>
43
44 #include <plat/gpio-cfg.h>
45 #include <plat/devs.h>
46 #include <plat/pm.h>
47
48 #include "common-smdk.h"
49
50 /* LED devices */
51
52 static struct s3c24xx_led_platdata smdk_pdata_led4 = {
53         .gpio           = S3C2410_GPF(4),
54         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
55         .name           = "led4",
56         .def_trigger    = "timer",
57 };
58
59 static struct s3c24xx_led_platdata smdk_pdata_led5 = {
60         .gpio           = S3C2410_GPF(5),
61         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
62         .name           = "led5",
63         .def_trigger    = "nand-disk",
64 };
65
66 static struct s3c24xx_led_platdata smdk_pdata_led6 = {
67         .gpio           = S3C2410_GPF(6),
68         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
69         .name           = "led6",
70 };
71
72 static struct s3c24xx_led_platdata smdk_pdata_led7 = {
73         .gpio           = S3C2410_GPF(7),
74         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
75         .name           = "led7",
76 };
77
78 static struct platform_device smdk_led4 = {
79         .name           = "s3c24xx_led",
80         .id             = 0,
81         .dev            = {
82                 .platform_data = &smdk_pdata_led4,
83         },
84 };
85
86 static struct platform_device smdk_led5 = {
87         .name           = "s3c24xx_led",
88         .id             = 1,
89         .dev            = {
90                 .platform_data = &smdk_pdata_led5,
91         },
92 };
93
94 static struct platform_device smdk_led6 = {
95         .name           = "s3c24xx_led",
96         .id             = 2,
97         .dev            = {
98                 .platform_data = &smdk_pdata_led6,
99         },
100 };
101
102 static struct platform_device smdk_led7 = {
103         .name           = "s3c24xx_led",
104         .id             = 3,
105         .dev            = {
106                 .platform_data = &smdk_pdata_led7,
107         },
108 };
109
110 /* NAND parititon from 2.4.18-swl5 */
111
112 static struct mtd_partition smdk_default_nand_part[] = {
113         [0] = {
114                 .name   = "Boot Agent",
115                 .size   = SZ_16K,
116                 .offset = 0,
117         },
118         [1] = {
119                 .name   = "S3C2410 flash partition 1",
120                 .offset = 0,
121                 .size   = SZ_2M,
122         },
123         [2] = {
124                 .name   = "S3C2410 flash partition 2",
125                 .offset = SZ_4M,
126                 .size   = SZ_4M,
127         },
128         [3] = {
129                 .name   = "S3C2410 flash partition 3",
130                 .offset = SZ_8M,
131                 .size   = SZ_2M,
132         },
133         [4] = {
134                 .name   = "S3C2410 flash partition 4",
135                 .offset = SZ_1M * 10,
136                 .size   = SZ_4M,
137         },
138         [5] = {
139                 .name   = "S3C2410 flash partition 5",
140                 .offset = SZ_1M * 14,
141                 .size   = SZ_1M * 10,
142         },
143         [6] = {
144                 .name   = "S3C2410 flash partition 6",
145                 .offset = SZ_1M * 24,
146                 .size   = SZ_1M * 24,
147         },
148         [7] = {
149                 .name   = "S3C2410 flash partition 7",
150                 .offset = SZ_1M * 48,
151                 .size   = MTDPART_SIZ_FULL,
152         }
153 };
154
155 static struct s3c2410_nand_set smdk_nand_sets[] = {
156         [0] = {
157                 .name           = "NAND",
158                 .nr_chips       = 1,
159                 .nr_partitions  = ARRAY_SIZE(smdk_default_nand_part),
160                 .partitions     = smdk_default_nand_part,
161         },
162 };
163
164 /* choose a set of timings which should suit most 512Mbit
165  * chips and beyond.
166 */
167
168 static struct s3c2410_platform_nand smdk_nand_info = {
169         .tacls          = 20,
170         .twrph0         = 60,
171         .twrph1         = 20,
172         .nr_sets        = ARRAY_SIZE(smdk_nand_sets),
173         .sets           = smdk_nand_sets,
174 };
175
176 /* devices we initialise */
177
178 static struct platform_device __initdata *smdk_devs[] = {
179         &s3c_device_nand,
180         &smdk_led4,
181         &smdk_led5,
182         &smdk_led6,
183         &smdk_led7,
184 };
185
186 static const struct gpio smdk_led_gpios[] = {
187         { S3C2410_GPF(4), GPIOF_OUT_INIT_HIGH, NULL },
188         { S3C2410_GPF(5), GPIOF_OUT_INIT_HIGH, NULL },
189         { S3C2410_GPF(6), GPIOF_OUT_INIT_HIGH, NULL },
190         { S3C2410_GPF(7), GPIOF_OUT_INIT_HIGH, NULL },
191 };
192
193 void __init smdk_machine_init(void)
194 {
195         /* Configure the LEDs (even if we have no LED support)*/
196
197         int ret = gpio_request_array(smdk_led_gpios,
198                                      ARRAY_SIZE(smdk_led_gpios));
199         if (!WARN_ON(ret < 0))
200                 gpio_free_array(smdk_led_gpios, ARRAY_SIZE(smdk_led_gpios));
201
202         if (machine_is_smdk2443())
203                 smdk_nand_info.twrph0 = 50;
204
205         s3c_nand_set_platdata(&smdk_nand_info);
206
207         platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
208
209         s3c_pm_init();
210 }