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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
|
/*
* Copyright (C) 2010 Linaro Limited
*
* based on code from the following
* Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
* Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <linux/mfd/mc13892.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/consumer.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx51.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include "devices-imx51.h"
#include "devices.h"
#include "efika.h"
#define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16)
#define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17)
#define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11)
#define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13)
#define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14)
#define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15)
#define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31)
/* board 1.1 doesn't have same reset gpio */
#define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2)
#define EFIKAMX_RESET IMX_GPIO_NR(1, 4)
#define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13)
#define EFIKAMX_PMIC IMX_GPIO_NR(1, 6)
/* the pci ids pin have pull up. they're driven low according to board id */
#define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
static iomux_v3_cfg_t mx51efikamx_pads[] = {
/* board id */
MX51_PAD_PCBID0,
MX51_PAD_PCBID1,
MX51_PAD_PCBID2,
/* leds */
MX51_PAD_CSI1_D9__GPIO3_13,
MX51_PAD_CSI1_VSYNC__GPIO3_14,
MX51_PAD_CSI1_HSYNC__GPIO3_15,
/* power key */
MX51_PAD_PWRKEY,
/* reset */
MX51_PAD_DI1_PIN13__GPIO3_2,
MX51_PAD_GPIO1_4__GPIO1_4,
/* power off */
MX51_PAD_CSI2_VSYNC__GPIO4_13,
};
/* PCBID2 PCBID1 PCBID0 STATE
1 1 1 ER1:rev1.1
1 1 0 ER2:rev1.2
1 0 1 ER3:rev1.3
1 0 0 ER4:rev1.4
*/
static void __init mx51_efikamx_board_id(void)
{
int id;
/* things are taking time to settle */
msleep(150);
gpio_request(EFIKAMX_PCBID0, "pcbid0");
gpio_direction_input(EFIKAMX_PCBID0);
gpio_request(EFIKAMX_PCBID1, "pcbid1");
gpio_direction_input(EFIKAMX_PCBID1);
gpio_request(EFIKAMX_PCBID2, "pcbid2");
gpio_direction_input(EFIKAMX_PCBID2);
id = gpio_get_value(EFIKAMX_PCBID0) ? 1 : 0;
id |= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1;
id |= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 2;
switch (id) {
case 7:
system_rev = 0x11;
break;
case 6:
system_rev = 0x12;
break;
case 5:
system_rev = 0x13;
break;
case 4:
system_rev = 0x14;
break;
default:
system_rev = 0x10;
break;
}
if ((system_rev == 0x10)
|| (system_rev == 0x12)
|| (system_rev == 0x14)) {
printk(KERN_WARNING
"EfikaMX: Unsupported board revision 1.%u!\n",
system_rev & 0xf);
}
}
static struct gpio_led mx51_efikamx_leds[] __initdata = {
{
.name = "efikamx:green",
.default_trigger = "default-on",
.gpio = EFIKAMX_GREEN_LED,
},
{
.name = "efikamx:red",
.default_trigger = "ide-disk",
.gpio = EFIKAMX_RED_LED,
},
{
.name = "efikamx:blue",
.default_trigger = "mmc0",
.gpio = EFIKAMX_BLUE_LED,
},
};
static const struct gpio_led_platform_data
mx51_efikamx_leds_data __initconst = {
.leds = mx51_efikamx_leds,
.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
};
static struct gpio_keys_button mx51_efikamx_powerkey[] = {
{
.code = KEY_POWER,
.gpio = EFIKAMX_POWER_KEY,
.type = EV_PWR,
.desc = "Power Button (CM)",
.wakeup = 1,
.debounce_interval = 10, /* ms */
},
};
static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
.buttons = mx51_efikamx_powerkey,
.nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
};
void mx51_efikamx_reset(void)
{
if (system_rev == 0x11)
gpio_direction_output(EFIKAMX_RESET1_1, 0);
else
gpio_direction_output(EFIKAMX_RESET, 0);
}
static struct regulator *pwgt1, *pwgt2, *coincell;
static void mx51_efikamx_power_off(void)
{
if (!IS_ERR(coincell))
regulator_disable(coincell);
if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
regulator_disable(pwgt2);
regulator_disable(pwgt1);
}
gpio_direction_output(EFIKAMX_POWEROFF, 1);
}
static int __init mx51_efikamx_power_init(void)
{
if (machine_is_mx51_efikamx()) {
pwgt1 = regulator_get(NULL, "pwgt1");
pwgt2 = regulator_get(NULL, "pwgt2");
if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
regulator_enable(pwgt1);
regulator_enable(pwgt2);
}
gpio_request(EFIKAMX_POWEROFF, "poweroff");
pm_power_off = mx51_efikamx_power_off;
/* enable coincell charger. maybe need a small power driver ? */
coincell = regulator_get(NULL, "coincell");
if (!IS_ERR(coincell)) {
regulator_set_voltage(coincell, 3000000, 3000000);
regulator_enable(coincell);
}
regulator_has_full_constraints();
}
return 0;
}
late_initcall(mx51_efikamx_power_init);
static void __init mx51_efikamx_init(void)
{
imx51_soc_init();
mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
ARRAY_SIZE(mx51efikamx_pads));
efika_board_common_init();
mx51_efikamx_board_id();
/* on < 1.2 boards both SD controllers are used */
if (system_rev < 0x12) {
imx51_add_sdhci_esdhc_imx(1, NULL);
mx51_efikamx_leds[2].default_trigger = "mmc1";
}
gpio_led_register_device(-1, &mx51_efikamx_leds_data);
imx_add_gpio_keys(&mx51_efikamx_powerkey_data);
if (system_rev == 0x11) {
gpio_request(EFIKAMX_RESET1_1, "reset");
gpio_direction_output(EFIKAMX_RESET1_1, 1);
} else {
gpio_request(EFIKAMX_RESET, "reset");
gpio_direction_output(EFIKAMX_RESET, 1);
}
/*
* enable wifi by default only on mx
* sb and mx have same wlan pin but the value to enable it are
* different :/
*/
gpio_request(EFIKA_WLAN_EN, "wlan_en");
gpio_direction_output(EFIKA_WLAN_EN, 0);
msleep(10);
gpio_request(EFIKA_WLAN_RESET, "wlan_rst");
gpio_direction_output(EFIKA_WLAN_RESET, 0);
msleep(10);
gpio_set_value(EFIKA_WLAN_RESET, 1);
}
static void __init mx51_efikamx_timer_init(void)
{
mx51_clocks_init(32768, 24000000, 22579200, 24576000);
}
static struct sys_timer mx51_efikamx_timer = {
.init = mx51_efikamx_timer_init,
};
MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
/* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
.boot_params = MX51_PHYS_OFFSET + 0x100,
.map_io = mx51_map_io,
.init_early = imx51_init_early,
.init_irq = mx51_init_irq,
.timer = &mx51_efikamx_timer,
.init_machine = mx51_efikamx_init,
MACHINE_END
|
