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088d01b0 AK |
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> | |
9d2c0ef7 | 21 | #include <linux/leds.h> |
fcbd0c5f | 22 | #include <linux/input.h> |
088d01b0 AK |
23 | #include <linux/delay.h> |
24 | #include <linux/io.h> | |
c6e34a4c APR |
25 | #include <linux/spi/flash.h> |
26 | #include <linux/spi/spi.h> | |
2432cff0 APR |
27 | #include <linux/mfd/mc13892.h> |
28 | #include <linux/regulator/machine.h> | |
29 | #include <linux/regulator/consumer.h> | |
088d01b0 AK |
30 | |
31 | #include <mach/common.h> | |
32 | #include <mach/hardware.h> | |
33 | #include <mach/iomux-mx51.h> | |
088d01b0 AK |
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" | |
7ac18a38 | 43 | #include "efika.h" |
81490fcd | 44 | |
96886c43 APR |
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) | |
f1dd361b | 48 | |
96886c43 APR |
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) | |
9d2c0ef7 | 52 | |
96886c43 | 53 | #define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31) |
fcbd0c5f | 54 | |
c2932bf4 | 55 | /* board 1.1 doesn't have same reset gpio */ |
96886c43 APR |
56 | #define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2) |
57 | #define EFIKAMX_RESET IMX_GPIO_NR(1, 4) | |
c2932bf4 | 58 | |
2432cff0 APR |
59 | #define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13) |
60 | ||
61 | #define EFIKAMX_PMIC IMX_GPIO_NR(1, 6) | |
62 | ||
f1dd361b APR |
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) | |
fcbd0c5f | 67 | #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE) |
f1dd361b | 68 | |
8f5260c8 | 69 | static iomux_v3_cfg_t mx51efikamx_pads[] = { |
f1dd361b APR |
70 | /* board id */ |
71 | MX51_PAD_PCBID0, | |
72 | MX51_PAD_PCBID1, | |
73 | MX51_PAD_PCBID2, | |
a96eb148 | 74 | |
9d2c0ef7 | 75 | /* leds */ |
ee1ae4d7 SH |
76 | MX51_PAD_CSI1_D9__GPIO3_13, |
77 | MX51_PAD_CSI1_VSYNC__GPIO3_14, | |
78 | MX51_PAD_CSI1_HSYNC__GPIO3_15, | |
fcbd0c5f APR |
79 | |
80 | /* power key */ | |
81 | MX51_PAD_PWRKEY, | |
c6e34a4c | 82 | |
c2932bf4 | 83 | /* reset */ |
ee1ae4d7 SH |
84 | MX51_PAD_DI1_PIN13__GPIO3_2, |
85 | MX51_PAD_GPIO1_4__GPIO1_4, | |
2432cff0 APR |
86 | |
87 | /* power off */ | |
88 | MX51_PAD_CSI2_VSYNC__GPIO4_13, | |
088d01b0 AK |
89 | }; |
90 | ||
f1dd361b APR |
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 | */ | |
97 | static 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); | |
112 | id |= gpio_get_value(EFIKAMX_PCBID1) << 1; | |
113 | id |= gpio_get_value(EFIKAMX_PCBID2) << 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 | ||
9d2c0ef7 APR |
142 | static struct gpio_led mx51_efikamx_leds[] = { |
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 | ||
160 | static struct gpio_led_platform_data mx51_efikamx_leds_data = { | |
161 | .leds = mx51_efikamx_leds, | |
162 | .num_leds = ARRAY_SIZE(mx51_efikamx_leds), | |
163 | }; | |
164 | ||
165 | static struct platform_device mx51_efikamx_leds_device = { | |
166 | .name = "leds-gpio", | |
167 | .id = -1, | |
168 | .dev = { | |
169 | .platform_data = &mx51_efikamx_leds_data, | |
170 | }, | |
171 | }; | |
172 | ||
fcbd0c5f APR |
173 | static struct gpio_keys_button mx51_efikamx_powerkey[] = { |
174 | { | |
175 | .code = KEY_POWER, | |
176 | .gpio = EFIKAMX_POWER_KEY, | |
177 | .type = EV_PWR, | |
178 | .desc = "Power Button (CM)", | |
179 | .wakeup = 1, | |
180 | .debounce_interval = 10, /* ms */ | |
181 | }, | |
182 | }; | |
183 | ||
184 | static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = { | |
185 | .buttons = mx51_efikamx_powerkey, | |
186 | .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey), | |
187 | }; | |
188 | ||
c2932bf4 APR |
189 | void mx51_efikamx_reset(void) |
190 | { | |
191 | if (system_rev == 0x11) | |
192 | gpio_direction_output(EFIKAMX_RESET1_1, 0); | |
193 | else | |
194 | gpio_direction_output(EFIKAMX_RESET, 0); | |
195 | } | |
196 | ||
2432cff0 APR |
197 | static struct regulator *pwgt1, *pwgt2, *coincell; |
198 | ||
199 | static void mx51_efikamx_power_off(void) | |
200 | { | |
201 | if (!IS_ERR(coincell)) | |
202 | regulator_disable(coincell); | |
203 | ||
204 | if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) { | |
205 | regulator_disable(pwgt2); | |
206 | regulator_disable(pwgt1); | |
207 | } | |
208 | gpio_direction_output(EFIKAMX_POWEROFF, 1); | |
209 | } | |
210 | ||
211 | static int __init mx51_efikamx_power_init(void) | |
212 | { | |
213 | if (machine_is_mx51_efikamx()) { | |
214 | pwgt1 = regulator_get(NULL, "pwgt1"); | |
215 | pwgt2 = regulator_get(NULL, "pwgt2"); | |
216 | if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) { | |
217 | regulator_enable(pwgt1); | |
218 | regulator_enable(pwgt2); | |
219 | } | |
220 | gpio_request(EFIKAMX_POWEROFF, "poweroff"); | |
221 | pm_power_off = mx51_efikamx_power_off; | |
222 | ||
223 | /* enable coincell charger. maybe need a small power driver ? */ | |
224 | coincell = regulator_get(NULL, "coincell"); | |
225 | if (!IS_ERR(coincell)) { | |
226 | regulator_set_voltage(coincell, 3000000, 3000000); | |
227 | regulator_enable(coincell); | |
228 | } | |
229 | ||
230 | regulator_has_full_constraints(); | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | late_initcall(mx51_efikamx_power_init); | |
236 | ||
e134fb2b | 237 | static void __init mx51_efikamx_init(void) |
088d01b0 AK |
238 | { |
239 | mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, | |
240 | ARRAY_SIZE(mx51efikamx_pads)); | |
7ac18a38 APR |
241 | efika_board_common_init(); |
242 | ||
f1dd361b | 243 | mx51_efikamx_board_id(); |
a96eb148 APR |
244 | |
245 | /* on < 1.2 boards both SD controllers are used */ | |
9d2c0ef7 | 246 | if (system_rev < 0x12) { |
0ef51953 | 247 | imx51_add_sdhci_esdhc_imx(1, NULL); |
9d2c0ef7 APR |
248 | mx51_efikamx_leds[2].default_trigger = "mmc1"; |
249 | } | |
250 | ||
251 | platform_device_register(&mx51_efikamx_leds_device); | |
fcbd0c5f | 252 | imx51_add_gpio_keys(&mx51_efikamx_powerkey_data); |
c6e34a4c | 253 | |
c2932bf4 APR |
254 | if (system_rev == 0x11) { |
255 | gpio_request(EFIKAMX_RESET1_1, "reset"); | |
256 | gpio_direction_output(EFIKAMX_RESET1_1, 1); | |
257 | } else { | |
258 | gpio_request(EFIKAMX_RESET, "reset"); | |
259 | gpio_direction_output(EFIKAMX_RESET, 1); | |
260 | } | |
9d72af6e APR |
261 | |
262 | /* | |
263 | * enable wifi by default only on mx | |
264 | * sb and mx have same wlan pin but the value to enable it are | |
265 | * different :/ | |
266 | */ | |
267 | gpio_request(EFIKA_WLAN_EN, "wlan_en"); | |
268 | gpio_direction_output(EFIKA_WLAN_EN, 0); | |
269 | msleep(10); | |
270 | ||
271 | gpio_request(EFIKA_WLAN_RESET, "wlan_rst"); | |
272 | gpio_direction_output(EFIKA_WLAN_RESET, 0); | |
273 | msleep(10); | |
274 | gpio_set_value(EFIKA_WLAN_RESET, 1); | |
088d01b0 AK |
275 | } |
276 | ||
277 | static void __init mx51_efikamx_timer_init(void) | |
278 | { | |
279 | mx51_clocks_init(32768, 24000000, 22579200, 24576000); | |
280 | } | |
281 | ||
e134fb2b UKK |
282 | static struct sys_timer mx51_efikamx_timer = { |
283 | .init = mx51_efikamx_timer_init, | |
088d01b0 AK |
284 | }; |
285 | ||
286 | MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop") | |
287 | /* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */ | |
088d01b0 AK |
288 | .boot_params = MX51_PHYS_OFFSET + 0x100, |
289 | .map_io = mx51_map_io, | |
ab130421 | 290 | .init_early = imx51_init_early, |
088d01b0 | 291 | .init_irq = mx51_init_irq, |
e134fb2b UKK |
292 | .timer = &mx51_efikamx_timer, |
293 | .init_machine = mx51_efikamx_init, | |
088d01b0 | 294 | MACHINE_END |