1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* arch/arm/mach-ep93xx/snappercl15.c
* Bluewater Systems Snapper CL15 system module
*
* Copyright (C) 2009 Bluewater Systems Ltd
* Author: Ryan Mallon <ryan@bluewatersys.com>
*
* NAND code adapted from driver by:
* Andre Renaud <andre@bluewatersys.com>
* James R. McKaskill
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
*/
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/fb.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <mach/hardware.h>
#include <mach/fb.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M)
#define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */
#define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */
#define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */
#define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */
#define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */
#define NAND_CTRL_ADDR(chip) (chip->IO_ADDR_W + 0x40)
static void snappercl15_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
unsigned int ctrl)
{
struct nand_chip *chip = mtd->priv;
static u16 nand_state = SNAPPERCL15_NAND_WPN;
u16 set;
if (ctrl & NAND_CTRL_CHANGE) {
set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN;
if (ctrl & NAND_NCE)
set &= ~SNAPPERCL15_NAND_CEN;
if (ctrl & NAND_CLE)
set |= SNAPPERCL15_NAND_CLE;
if (ctrl & NAND_ALE)
set |= SNAPPERCL15_NAND_ALE;
nand_state &= ~(SNAPPERCL15_NAND_CEN |
SNAPPERCL15_NAND_CLE |
SNAPPERCL15_NAND_ALE);
nand_state |= set;
__raw_writew(nand_state, NAND_CTRL_ADDR(chip));
}
if (cmd != NAND_CMD_NONE)
__raw_writew((cmd & 0xff) | nand_state, chip->IO_ADDR_W);
}
static int snappercl15_nand_dev_ready(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY);
}
static const char *snappercl15_nand_part_probes[] = {"cmdlinepart", NULL};
static struct mtd_partition snappercl15_nand_parts[] = {
{
.name = "Kernel",
.offset = 0,
.size = SZ_2M,
},
{
.name = "Filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct platform_nand_data snappercl15_nand_data = {
.chip = {
.nr_chips = 1,
.part_probe_types = snappercl15_nand_part_probes,
.partitions = snappercl15_nand_parts,
.nr_partitions = ARRAY_SIZE(snappercl15_nand_parts),
.options = NAND_NO_AUTOINCR,
.chip_delay = 25,
},
.ctrl = {
.dev_ready = snappercl15_nand_dev_ready,
.cmd_ctrl = snappercl15_nand_cmd_ctrl,
},
};
static struct resource snappercl15_nand_resource[] = {
{
.start = SNAPPERCL15_NAND_BASE,
.end = SNAPPERCL15_NAND_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device snappercl15_nand_device = {
.name = "gen_nand",
.id = -1,
.dev.platform_data = &snappercl15_nand_data,
.resource = snappercl15_nand_resource,
.num_resources = ARRAY_SIZE(snappercl15_nand_resource),
};
static struct ep93xx_eth_data __initdata snappercl15_eth_data = {
.phy_id = 1,
};
static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = {
.sda_pin = EP93XX_GPIO_LINE_EEDAT,
.sda_is_open_drain = 0,
.scl_pin = EP93XX_GPIO_LINE_EECLK,
.scl_is_open_drain = 0,
.udelay = 0,
.timeout = 0,
};
static struct i2c_board_info __initdata snappercl15_i2c_data[] = {
{
/* Audio codec */
I2C_BOARD_INFO("tlv320aic23", 0x1a),
},
};
static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = {
.num_modes = EP93XXFB_USE_MODEDB,
.bpp = 16,
};
static void __init snappercl15_init_machine(void)
{
ep93xx_init_devices();
ep93xx_register_eth(&snappercl15_eth_data, 1);
ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data,
ARRAY_SIZE(snappercl15_i2c_data));
ep93xx_register_fb(&snappercl15_fb_info);
ep93xx_register_i2s();
platform_device_register(&snappercl15_nand_device);
}
MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15")
/* Maintainer: Ryan Mallon <ryan@bluewatersys.com> */
.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = snappercl15_init_machine,
MACHINE_END
|
