diff options
Diffstat (limited to 'drivers/mtd/nand/h1910.c')
-rw-r--r-- | drivers/mtd/nand/h1910.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c deleted file mode 100644 index 50166e93ba96..000000000000 --- a/drivers/mtd/nand/h1910.c +++ /dev/null | |||
@@ -1,167 +0,0 @@ | |||
1 | /* | ||
2 | * drivers/mtd/nand/h1910.c | ||
3 | * | ||
4 | * Copyright (C) 2003 Joshua Wise (joshua@joshuawise.com) | ||
5 | * | ||
6 | * Derived from drivers/mtd/nand/edb7312.c | ||
7 | * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) | ||
8 | * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) | ||
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 | * Overview: | ||
15 | * This is a device driver for the NAND flash device found on the | ||
16 | * iPAQ h1910 board which utilizes the Samsung K9F2808 part. This is | ||
17 | * a 128Mibit (16MiB x 8 bits) NAND flash device. | ||
18 | */ | ||
19 | |||
20 | #include <linux/slab.h> | ||
21 | #include <linux/init.h> | ||
22 | #include <linux/module.h> | ||
23 | #include <linux/mtd/mtd.h> | ||
24 | #include <linux/mtd/nand.h> | ||
25 | #include <linux/mtd/partitions.h> | ||
26 | #include <asm/io.h> | ||
27 | #include <mach/hardware.h> | ||
28 | #include <asm/sizes.h> | ||
29 | #include <mach/h1900-gpio.h> | ||
30 | #include <mach/ipaq.h> | ||
31 | |||
32 | /* | ||
33 | * MTD structure for EDB7312 board | ||
34 | */ | ||
35 | static struct mtd_info *h1910_nand_mtd = NULL; | ||
36 | |||
37 | /* | ||
38 | * Module stuff | ||
39 | */ | ||
40 | |||
41 | /* | ||
42 | * Define static partitions for flash device | ||
43 | */ | ||
44 | static struct mtd_partition partition_info[] = { | ||
45 | {name:"h1910 NAND Flash", | ||
46 | offset:0, | ||
47 | size:16 * 1024 * 1024} | ||
48 | }; | ||
49 | |||
50 | #define NUM_PARTITIONS 1 | ||
51 | |||
52 | /* | ||
53 | * hardware specific access to control-lines | ||
54 | * | ||
55 | * NAND_NCE: bit 0 - don't care | ||
56 | * NAND_CLE: bit 1 - address bit 2 | ||
57 | * NAND_ALE: bit 2 - address bit 3 | ||
58 | */ | ||
59 | static void h1910_hwcontrol(struct mtd_info *mtd, int cmd, | ||
60 | unsigned int ctrl) | ||
61 | { | ||
62 | struct nand_chip *chip = mtd->priv; | ||
63 | |||
64 | if (cmd != NAND_CMD_NONE) | ||
65 | writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1)); | ||
66 | } | ||
67 | |||
68 | /* | ||
69 | * read device ready pin | ||
70 | */ | ||
71 | #if 0 | ||
72 | static int h1910_device_ready(struct mtd_info *mtd) | ||
73 | { | ||
74 | return (GPLR(55) & GPIO_bit(55)); | ||
75 | } | ||
76 | #endif | ||
77 | |||
78 | /* | ||
79 | * Main initialization routine | ||
80 | */ | ||
81 | static int __init h1910_init(void) | ||
82 | { | ||
83 | struct nand_chip *this; | ||
84 | void __iomem *nandaddr; | ||
85 | |||
86 | if (!machine_is_h1900()) | ||
87 | return -ENODEV; | ||
88 | |||
89 | nandaddr = ioremap(0x08000000, 0x1000); | ||
90 | if (!nandaddr) { | ||
91 | printk("Failed to ioremap nand flash.\n"); | ||
92 | return -ENOMEM; | ||
93 | } | ||
94 | |||
95 | /* Allocate memory for MTD device structure and private data */ | ||
96 | h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); | ||
97 | if (!h1910_nand_mtd) { | ||
98 | printk("Unable to allocate h1910 NAND MTD device structure.\n"); | ||
99 | iounmap((void *)nandaddr); | ||
100 | return -ENOMEM; | ||
101 | } | ||
102 | |||
103 | /* Get pointer to private data */ | ||
104 | this = (struct nand_chip *)(&h1910_nand_mtd[1]); | ||
105 | |||
106 | /* Initialize structures */ | ||
107 | memset(h1910_nand_mtd, 0, sizeof(struct mtd_info)); | ||
108 | memset(this, 0, sizeof(struct nand_chip)); | ||
109 | |||
110 | /* Link the private data with the MTD structure */ | ||
111 | h1910_nand_mtd->priv = this; | ||
112 | h1910_nand_mtd->owner = THIS_MODULE; | ||
113 | |||
114 | /* | ||
115 | * Enable VPEN | ||
116 | */ | ||
117 | GPSR(37) = GPIO_bit(37); | ||
118 | |||
119 | /* insert callbacks */ | ||
120 | this->IO_ADDR_R = nandaddr; | ||
121 | this->IO_ADDR_W = nandaddr; | ||
122 | this->cmd_ctrl = h1910_hwcontrol; | ||
123 | this->dev_ready = NULL; /* unknown whether that was correct or not so we will just do it like this */ | ||
124 | /* 15 us command delay time */ | ||
125 | this->chip_delay = 50; | ||
126 | this->ecc.mode = NAND_ECC_SOFT; | ||
127 | |||
128 | /* Scan to find existence of the device */ | ||
129 | if (nand_scan(h1910_nand_mtd, 1)) { | ||
130 | printk(KERN_NOTICE "No NAND device - returning -ENXIO\n"); | ||
131 | kfree(h1910_nand_mtd); | ||
132 | iounmap((void *)nandaddr); | ||
133 | return -ENXIO; | ||
134 | } | ||
135 | |||
136 | /* Register the partitions */ | ||
137 | mtd_device_parse_register(h1910_nand_mtd, NULL, NULL, partition_info, | ||
138 | NUM_PARTITIONS); | ||
139 | |||
140 | /* Return happy */ | ||
141 | return 0; | ||
142 | } | ||
143 | |||
144 | module_init(h1910_init); | ||
145 | |||
146 | /* | ||
147 | * Clean up routine | ||
148 | */ | ||
149 | static void __exit h1910_cleanup(void) | ||
150 | { | ||
151 | struct nand_chip *this = (struct nand_chip *)&h1910_nand_mtd[1]; | ||
152 | |||
153 | /* Release resources, unregister device */ | ||
154 | nand_release(h1910_nand_mtd); | ||
155 | |||
156 | /* Release io resource */ | ||
157 | iounmap((void *)this->IO_ADDR_W); | ||
158 | |||
159 | /* Free the MTD device structure */ | ||
160 | kfree(h1910_nand_mtd); | ||
161 | } | ||
162 | |||
163 | module_exit(h1910_cleanup); | ||
164 | |||
165 | MODULE_LICENSE("GPL"); | ||
166 | MODULE_AUTHOR("Joshua Wise <joshua at joshuawise dot com>"); | ||
167 | MODULE_DESCRIPTION("NAND flash driver for iPAQ h1910"); | ||