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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* Board-specific setup code for the ATNGW100 Network Gateway
*
* Copyright (C) 2005-2006 Atmel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/etherdevice.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/init.h>
#include <linux/linkage.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <linux/atmel-mci.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <mach/at32ap700x.h>
#include <mach/board.h>
#include <mach/init.h>
#include <mach/portmux.h>
/* Oscillator frequencies. These are board-specific */
unsigned long at32_board_osc_rates[3] = {
[0] = 32768, /* 32.768 kHz on RTC osc */
[1] = 20000000, /* 20 MHz on osc0 */
[2] = 12000000, /* 12 MHz on osc1 */
};
/* Initialized by bootloader-specific startup code. */
struct tag *bootloader_tags __initdata;
struct eth_addr {
u8 addr[6];
};
static struct eth_addr __initdata hw_addr[2];
static struct eth_platform_data __initdata eth_data[2];
static struct spi_board_info spi0_board_info[] __initdata = {
{
.modalias = "mtd_dataflash",
.max_speed_hz = 8000000,
.chip_select = 0,
},
};
static struct mci_platform_data __initdata mci0_data = {
.slot[0] = {
.bus_width = 4,
#ifndef CONFIG_BOARD_ATNGW100_EVKLCD10X
.detect_pin = GPIO_PIN_PC(25),
.wp_pin = GPIO_PIN_PE(0),
#else
.detect_pin = GPIO_PIN_NONE,
.wp_pin = GPIO_PIN_NONE,
#endif
},
};
/*
* The next two functions should go away as the boot loader is
* supposed to initialize the macb address registers with a valid
* ethernet address. But we need to keep it around for a while until
* we can be reasonably sure the boot loader does this.
*
* The phy_id is ignored as the driver will probe for it.
*/
static int __init parse_tag_ethernet(struct tag *tag)
{
int i;
i = tag->u.ethernet.mac_index;
if (i < ARRAY_SIZE(hw_addr))
memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
sizeof(hw_addr[i].addr));
return 0;
}
__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
static void __init set_hw_addr(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
const u8 *addr;
void __iomem *regs;
struct clk *pclk;
if (!res)
return;
if (pdev->id >= ARRAY_SIZE(hw_addr))
return;
addr = hw_addr[pdev->id].addr;
if (!is_valid_ether_addr(addr))
return;
/*
* Since this is board-specific code, we'll cheat and use the
* physical address directly as we happen to know that it's
* the same as the virtual address.
*/
regs = (void __iomem __force *)res->start;
pclk = clk_get(&pdev->dev, "pclk");
if (!pclk)
return;
clk_enable(pclk);
__raw_writel((addr[3] << 24) | (addr[2] << 16)
| (addr[1] << 8) | addr[0], regs + 0x98);
__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
clk_disable(pclk);
clk_put(pclk);
}
void __init setup_board(void)
{
at32_map_usart(1, 0); /* USART 1: /dev/ttyS0, DB9 */
at32_setup_serial_console(0);
}
static const struct gpio_led ngw_leds[] = {
{ .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,
.default_trigger = "heartbeat",
},
{ .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },
{ .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },
};
static const struct gpio_led_platform_data ngw_led_data = {
.num_leds = ARRAY_SIZE(ngw_leds),
.leds = (void *) ngw_leds,
};
static struct platform_device ngw_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = (void *) &ngw_led_data,
}
};
static struct i2c_gpio_platform_data i2c_gpio_data = {
.sda_pin = GPIO_PIN_PA(6),
.scl_pin = GPIO_PIN_PA(7),
.sda_is_open_drain = 1,
.scl_is_open_drain = 1,
.udelay = 2, /* close to 100 kHz */
};
static struct platform_device i2c_gpio_device = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &i2c_gpio_data,
},
};
static struct i2c_board_info __initdata i2c_info[] = {
/* NOTE: original ATtiny24 firmware is at address 0x0b */
};
static int __init atngw100_init(void)
{
unsigned i;
/*
* ATNGW100 uses 16-bit SDRAM interface, so we don't need to
* reserve any pins for it.
*/
at32_add_device_usart(0);
set_hw_addr(at32_add_device_eth(0, ð_data[0]));
set_hw_addr(at32_add_device_eth(1, ð_data[1]));
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
at32_add_device_mci(0, &mci0_data);
at32_add_device_usba(0, NULL);
for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
at32_select_gpio(ngw_leds[i].gpio,
AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
}
platform_device_register(&ngw_gpio_leds);
/* all these i2c/smbus pins should have external pullups for
* open-drain sharing among all I2C devices. SDA and SCL do;
* PB28/EXTINT3 doesn't; it should be SMBALERT# (for PMBus),
* but it's not available off-board.
*/
at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP);
at32_select_gpio(i2c_gpio_data.sda_pin,
AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
at32_select_gpio(i2c_gpio_data.scl_pin,
AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
platform_device_register(&i2c_gpio_device);
i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
return 0;
}
postcore_initcall(atngw100_init);
static int __init atngw100_arch_init(void)
{
/* PB30 is the otherwise unused jumper on the mainboard, with an
* external pullup; the jumper grounds it. Use it however you
* like, including letting U-Boot or Linux tweak boot sequences.
*/
at32_select_gpio(GPIO_PIN_PB(30), 0);
gpio_request(GPIO_PIN_PB(30), "j15");
gpio_direction_input(GPIO_PIN_PB(30));
gpio_export(GPIO_PIN_PB(30), false);
/* set_irq_type() after the arch_initcall for EIC has run, and
* before the I2C subsystem could try using this IRQ.
*/
return set_irq_type(AT32_EXTINT(3), IRQ_TYPE_EDGE_FALLING);
}
arch_initcall(atngw100_arch_init);
|
