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diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c
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1/*
2 * Copyright (C) 2010 Linaro Limited
3 *
4 * based on code from the following
5 * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
6 * Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
7 * Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
8 *
9 * The code contained herein is licensed under the GNU General Public
10 * License. You may obtain a copy of the GNU General Public License
11 * Version 2 or later at the following locations:
12 *
13 * http://www.opensource.org/licenses/gpl-license.html
14 * http://www.gnu.org/copyleft/gpl.html
15 */
16
17#include <linux/init.h>
18#include <linux/platform_device.h>
19#include <linux/i2c.h>
20#include <linux/gpio.h>
21#include <linux/leds.h>
22#include <linux/input.h>
23#include <linux/delay.h>
24#include <linux/io.h>
25#include <linux/spi/flash.h>
26#include <linux/spi/spi.h>
27#include <linux/mfd/mc13892.h>
28#include <linux/regulator/machine.h>
29#include <linux/regulator/consumer.h>
30
31#include <mach/common.h>
32#include <mach/hardware.h>
33#include <mach/iomux-mx51.h>
34
35#include <asm/irq.h>
36#include <asm/setup.h>
37#include <asm/mach-types.h>
38#include <asm/mach/arch.h>
39#include <asm/mach/time.h>
40
41#include "devices-imx51.h"
42#include "devices.h"
43#include "efika.h"
44
45#define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16)
46#define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17)
47#define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11)
48
49#define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13)
50#define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14)
51#define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15)
52
53#define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31)
54
55/* board 1.1 doesn't have same reset gpio */
56#define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2)
57#define EFIKAMX_RESET IMX_GPIO_NR(1, 4)
58
59#define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13)
60
61#define EFIKAMX_PMIC IMX_GPIO_NR(1, 6)
62
63/* the pci ids pin have pull up. they're driven low according to board id */
64#define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
65#define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
66#define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
67#define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
68
69static iomux_v3_cfg_t mx51efikamx_pads[] = {
70 /* board id */
71 MX51_PAD_PCBID0,
72 MX51_PAD_PCBID1,
73 MX51_PAD_PCBID2,
74
75 /* leds */
76 MX51_PAD_CSI1_D9__GPIO3_13,
77 MX51_PAD_CSI1_VSYNC__GPIO3_14,
78 MX51_PAD_CSI1_HSYNC__GPIO3_15,
79
80 /* power key */
81 MX51_PAD_PWRKEY,
82
83 /* reset */
84 MX51_PAD_DI1_PIN13__GPIO3_2,
85 MX51_PAD_GPIO1_4__GPIO1_4,
86
87 /* power off */
88 MX51_PAD_CSI2_VSYNC__GPIO4_13,
89};
90
91/* PCBID2 PCBID1 PCBID0 STATE
92 1 1 1 ER1:rev1.1
93 1 1 0 ER2:rev1.2
94 1 0 1 ER3:rev1.3
95 1 0 0 ER4:rev1.4
96*/
97static void __init mx51_efikamx_board_id(void)
98{
99 int id;
100
101 /* things are taking time to settle */
102 msleep(150);
103
104 gpio_request(EFIKAMX_PCBID0, "pcbid0");
105 gpio_direction_input(EFIKAMX_PCBID0);
106 gpio_request(EFIKAMX_PCBID1, "pcbid1");
107 gpio_direction_input(EFIKAMX_PCBID1);
108 gpio_request(EFIKAMX_PCBID2, "pcbid2");
109 gpio_direction_input(EFIKAMX_PCBID2);
110
111 id = gpio_get_value(EFIKAMX_PCBID0) ? 1 : 0;
112 id |= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1;
113 id |= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 2;
114
115 switch (id) {
116 case 7:
117 system_rev = 0x11;
118 break;
119 case 6:
120 system_rev = 0x12;
121 break;
122 case 5:
123 system_rev = 0x13;
124 break;
125 case 4:
126 system_rev = 0x14;
127 break;
128 default:
129 system_rev = 0x10;
130 break;
131 }
132
133 if ((system_rev == 0x10)
134 || (system_rev == 0x12)
135 || (system_rev == 0x14)) {
136 printk(KERN_WARNING
137 "EfikaMX: Unsupported board revision 1.%u!\n",
138 system_rev & 0xf);
139 }
140}
141
142static struct gpio_led mx51_efikamx_leds[] __initdata = {
143 {
144 .name = "efikamx:green",
145 .default_trigger = "default-on",
146 .gpio = EFIKAMX_GREEN_LED,
147 },
148 {
149 .name = "efikamx:red",
150 .default_trigger = "ide-disk",
151 .gpio = EFIKAMX_RED_LED,
152 },
153 {
154 .name = "efikamx:blue",
155 .default_trigger = "mmc0",
156 .gpio = EFIKAMX_BLUE_LED,
157 },
158};
159
160static const struct gpio_led_platform_data
161 mx51_efikamx_leds_data __initconst = {
162 .leds = mx51_efikamx_leds,
163 .num_leds = ARRAY_SIZE(mx51_efikamx_leds),
164};
165
166static struct gpio_keys_button mx51_efikamx_powerkey[] = {
167 {
168 .code = KEY_POWER,
169 .gpio = EFIKAMX_POWER_KEY,
170 .type = EV_PWR,
171 .desc = "Power Button (CM)",
172 .wakeup = 1,
173 .debounce_interval = 10, /* ms */
174 },
175};
176
177static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
178 .buttons = mx51_efikamx_powerkey,
179 .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
180};
181
182void mx51_efikamx_reset(void)
183{
184 if (system_rev == 0x11)
185 gpio_direction_output(EFIKAMX_RESET1_1, 0);
186 else
187 gpio_direction_output(EFIKAMX_RESET, 0);
188}
189
190static struct regulator *pwgt1, *pwgt2, *coincell;
191
192static void mx51_efikamx_power_off(void)
193{
194 if (!IS_ERR(coincell))
195 regulator_disable(coincell);
196
197 if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
198 regulator_disable(pwgt2);
199 regulator_disable(pwgt1);
200 }
201 gpio_direction_output(EFIKAMX_POWEROFF, 1);
202}
203
204static int __init mx51_efikamx_power_init(void)
205{
206 if (machine_is_mx51_efikamx()) {
207 pwgt1 = regulator_get(NULL, "pwgt1");
208 pwgt2 = regulator_get(NULL, "pwgt2");
209 if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
210 regulator_enable(pwgt1);
211 regulator_enable(pwgt2);
212 }
213 gpio_request(EFIKAMX_POWEROFF, "poweroff");
214 pm_power_off = mx51_efikamx_power_off;
215
216 /* enable coincell charger. maybe need a small power driver ? */
217 coincell = regulator_get(NULL, "coincell");
218 if (!IS_ERR(coincell)) {
219 regulator_set_voltage(coincell, 3000000, 3000000);
220 regulator_enable(coincell);
221 }
222
223 regulator_has_full_constraints();
224 }
225
226 return 0;
227}
228late_initcall(mx51_efikamx_power_init);
229
230static void __init mx51_efikamx_init(void)
231{
232 imx51_soc_init();
233
234 mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
235 ARRAY_SIZE(mx51efikamx_pads));
236 efika_board_common_init();
237
238 mx51_efikamx_board_id();
239
240 /* on < 1.2 boards both SD controllers are used */
241 if (system_rev < 0x12) {
242 imx51_add_sdhci_esdhc_imx(1, NULL);
243 mx51_efikamx_leds[2].default_trigger = "mmc1";
244 }
245
246 gpio_led_register_device(-1, &mx51_efikamx_leds_data);
247 imx_add_gpio_keys(&mx51_efikamx_powerkey_data);
248
249 if (system_rev == 0x11) {
250 gpio_request(EFIKAMX_RESET1_1, "reset");
251 gpio_direction_output(EFIKAMX_RESET1_1, 1);
252 } else {
253 gpio_request(EFIKAMX_RESET, "reset");
254 gpio_direction_output(EFIKAMX_RESET, 1);
255 }
256
257 /*
258 * enable wifi by default only on mx
259 * sb and mx have same wlan pin but the value to enable it are
260 * different :/
261 */
262 gpio_request(EFIKA_WLAN_EN, "wlan_en");
263 gpio_direction_output(EFIKA_WLAN_EN, 0);
264 msleep(10);
265
266 gpio_request(EFIKA_WLAN_RESET, "wlan_rst");
267 gpio_direction_output(EFIKA_WLAN_RESET, 0);
268 msleep(10);
269 gpio_set_value(EFIKA_WLAN_RESET, 1);
270}
271
272static void __init mx51_efikamx_timer_init(void)
273{
274 mx51_clocks_init(32768, 24000000, 22579200, 24576000);
275}
276
277static struct sys_timer mx51_efikamx_timer = {
278 .init = mx51_efikamx_timer_init,
279};
280
281MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
282 /* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
283 .boot_params = MX51_PHYS_OFFSET + 0x100,
284 .map_io = mx51_map_io,
285 .init_early = imx51_init_early,
286 .init_irq = mx51_init_irq,
287 .timer = &mx51_efikamx_timer,
288 .init_machine = mx51_efikamx_init,
289MACHINE_END
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