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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 | 34 | |
088d01b0 | 35 | #include <asm/setup.h> |
9f97da78 | 36 | #include <asm/system_info.h> |
088d01b0 AK |
37 | #include <asm/mach-types.h> |
38 | #include <asm/mach/arch.h> | |
39 | #include <asm/mach/time.h> | |
40 | ||
41 | #include "devices-imx51.h" | |
7ac18a38 | 42 | #include "efika.h" |
81490fcd | 43 | |
96886c43 APR |
44 | #define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16) |
45 | #define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17) | |
46 | #define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11) | |
f1dd361b | 47 | |
96886c43 APR |
48 | #define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13) |
49 | #define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14) | |
50 | #define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15) | |
9d2c0ef7 | 51 | |
96886c43 | 52 | #define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31) |
fcbd0c5f | 53 | |
c2932bf4 | 54 | /* board 1.1 doesn't have same reset gpio */ |
96886c43 APR |
55 | #define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2) |
56 | #define EFIKAMX_RESET IMX_GPIO_NR(1, 4) | |
c2932bf4 | 57 | |
2432cff0 APR |
58 | #define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13) |
59 | ||
60 | #define EFIKAMX_PMIC IMX_GPIO_NR(1, 6) | |
61 | ||
f1dd361b APR |
62 | /* the pci ids pin have pull up. they're driven low according to board id */ |
63 | #define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) | |
64 | #define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) | |
65 | #define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) | |
fcbd0c5f | 66 | #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE) |
f1dd361b | 67 | |
8f5260c8 | 68 | static iomux_v3_cfg_t mx51efikamx_pads[] = { |
f1dd361b APR |
69 | /* board id */ |
70 | MX51_PAD_PCBID0, | |
71 | MX51_PAD_PCBID1, | |
72 | MX51_PAD_PCBID2, | |
a96eb148 | 73 | |
9d2c0ef7 | 74 | /* leds */ |
ee1ae4d7 SH |
75 | MX51_PAD_CSI1_D9__GPIO3_13, |
76 | MX51_PAD_CSI1_VSYNC__GPIO3_14, | |
77 | MX51_PAD_CSI1_HSYNC__GPIO3_15, | |
fcbd0c5f APR |
78 | |
79 | /* power key */ | |
80 | MX51_PAD_PWRKEY, | |
c6e34a4c | 81 | |
c2932bf4 | 82 | /* reset */ |
ee1ae4d7 SH |
83 | MX51_PAD_DI1_PIN13__GPIO3_2, |
84 | MX51_PAD_GPIO1_4__GPIO1_4, | |
2432cff0 APR |
85 | |
86 | /* power off */ | |
87 | MX51_PAD_CSI2_VSYNC__GPIO4_13, | |
088d01b0 AK |
88 | }; |
89 | ||
f1dd361b APR |
90 | /* PCBID2 PCBID1 PCBID0 STATE |
91 | 1 1 1 ER1:rev1.1 | |
92 | 1 1 0 ER2:rev1.2 | |
93 | 1 0 1 ER3:rev1.3 | |
94 | 1 0 0 ER4:rev1.4 | |
95 | */ | |
96 | static void __init mx51_efikamx_board_id(void) | |
97 | { | |
98 | int id; | |
99 | ||
100 | /* things are taking time to settle */ | |
101 | msleep(150); | |
102 | ||
103 | gpio_request(EFIKAMX_PCBID0, "pcbid0"); | |
104 | gpio_direction_input(EFIKAMX_PCBID0); | |
105 | gpio_request(EFIKAMX_PCBID1, "pcbid1"); | |
106 | gpio_direction_input(EFIKAMX_PCBID1); | |
107 | gpio_request(EFIKAMX_PCBID2, "pcbid2"); | |
108 | gpio_direction_input(EFIKAMX_PCBID2); | |
109 | ||
fbd60a7e APR |
110 | id = gpio_get_value(EFIKAMX_PCBID0) ? 1 : 0; |
111 | id |= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1; | |
112 | id |= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 2; | |
f1dd361b APR |
113 | |
114 | switch (id) { | |
115 | case 7: | |
116 | system_rev = 0x11; | |
117 | break; | |
118 | case 6: | |
119 | system_rev = 0x12; | |
120 | break; | |
121 | case 5: | |
122 | system_rev = 0x13; | |
123 | break; | |
124 | case 4: | |
125 | system_rev = 0x14; | |
126 | break; | |
127 | default: | |
128 | system_rev = 0x10; | |
129 | break; | |
130 | } | |
131 | ||
132 | if ((system_rev == 0x10) | |
133 | || (system_rev == 0x12) | |
134 | || (system_rev == 0x14)) { | |
135 | printk(KERN_WARNING | |
136 | "EfikaMX: Unsupported board revision 1.%u!\n", | |
137 | system_rev & 0xf); | |
138 | } | |
139 | } | |
140 | ||
5b8d628c | 141 | static struct gpio_led mx51_efikamx_leds[] __initdata = { |
9d2c0ef7 APR |
142 | { |
143 | .name = "efikamx:green", | |
144 | .default_trigger = "default-on", | |
145 | .gpio = EFIKAMX_GREEN_LED, | |
146 | }, | |
147 | { | |
148 | .name = "efikamx:red", | |
149 | .default_trigger = "ide-disk", | |
150 | .gpio = EFIKAMX_RED_LED, | |
151 | }, | |
152 | { | |
153 | .name = "efikamx:blue", | |
154 | .default_trigger = "mmc0", | |
155 | .gpio = EFIKAMX_BLUE_LED, | |
156 | }, | |
157 | }; | |
158 | ||
5b8d628c UKK |
159 | static const struct gpio_led_platform_data |
160 | mx51_efikamx_leds_data __initconst = { | |
9d2c0ef7 APR |
161 | .leds = mx51_efikamx_leds, |
162 | .num_leds = ARRAY_SIZE(mx51_efikamx_leds), | |
163 | }; | |
164 | ||
600ea5cd APR |
165 | static struct esdhc_platform_data sd_pdata = { |
166 | .cd_type = ESDHC_CD_CONTROLLER, | |
167 | .wp_type = ESDHC_WP_CONTROLLER, | |
168 | }; | |
169 | ||
fcbd0c5f APR |
170 | static struct gpio_keys_button mx51_efikamx_powerkey[] = { |
171 | { | |
172 | .code = KEY_POWER, | |
173 | .gpio = EFIKAMX_POWER_KEY, | |
174 | .type = EV_PWR, | |
175 | .desc = "Power Button (CM)", | |
176 | .wakeup = 1, | |
177 | .debounce_interval = 10, /* ms */ | |
178 | }, | |
179 | }; | |
180 | ||
181 | static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = { | |
182 | .buttons = mx51_efikamx_powerkey, | |
183 | .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey), | |
184 | }; | |
185 | ||
65ea7884 | 186 | static void mx51_efikamx_restart(char mode, const char *cmd) |
c2932bf4 APR |
187 | { |
188 | if (system_rev == 0x11) | |
189 | gpio_direction_output(EFIKAMX_RESET1_1, 0); | |
190 | else | |
191 | gpio_direction_output(EFIKAMX_RESET, 0); | |
192 | } | |
193 | ||
2432cff0 APR |
194 | static struct regulator *pwgt1, *pwgt2, *coincell; |
195 | ||
196 | static void mx51_efikamx_power_off(void) | |
197 | { | |
198 | if (!IS_ERR(coincell)) | |
199 | regulator_disable(coincell); | |
200 | ||
201 | if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) { | |
202 | regulator_disable(pwgt2); | |
203 | regulator_disable(pwgt1); | |
204 | } | |
205 | gpio_direction_output(EFIKAMX_POWEROFF, 1); | |
206 | } | |
207 | ||
208 | static int __init mx51_efikamx_power_init(void) | |
209 | { | |
8321b758 SG |
210 | pwgt1 = regulator_get(NULL, "pwgt1"); |
211 | pwgt2 = regulator_get(NULL, "pwgt2"); | |
212 | if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) { | |
213 | regulator_enable(pwgt1); | |
214 | regulator_enable(pwgt2); | |
215 | } | |
216 | gpio_request(EFIKAMX_POWEROFF, "poweroff"); | |
217 | pm_power_off = mx51_efikamx_power_off; | |
218 | ||
219 | /* enable coincell charger. maybe need a small power driver ? */ | |
220 | coincell = regulator_get(NULL, "coincell"); | |
221 | if (!IS_ERR(coincell)) { | |
222 | regulator_set_voltage(coincell, 3000000, 3000000); | |
223 | regulator_enable(coincell); | |
2432cff0 APR |
224 | } |
225 | ||
8321b758 SG |
226 | regulator_has_full_constraints(); |
227 | ||
2432cff0 APR |
228 | return 0; |
229 | } | |
8321b758 SG |
230 | |
231 | static void __init mx51_efikamx_init_late(void) | |
232 | { | |
233 | imx51_init_late(); | |
234 | mx51_efikamx_power_init(); | |
235 | } | |
2432cff0 | 236 | |
e134fb2b | 237 | static void __init mx51_efikamx_init(void) |
088d01b0 | 238 | { |
b78d8e59 SG |
239 | imx51_soc_init(); |
240 | ||
088d01b0 AK |
241 | mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, |
242 | ARRAY_SIZE(mx51efikamx_pads)); | |
7ac18a38 APR |
243 | efika_board_common_init(); |
244 | ||
f1dd361b | 245 | mx51_efikamx_board_id(); |
a96eb148 APR |
246 | |
247 | /* on < 1.2 boards both SD controllers are used */ | |
9d2c0ef7 | 248 | if (system_rev < 0x12) { |
600ea5cd APR |
249 | imx51_add_sdhci_esdhc_imx(0, NULL); |
250 | imx51_add_sdhci_esdhc_imx(1, &sd_pdata); | |
9d2c0ef7 | 251 | mx51_efikamx_leds[2].default_trigger = "mmc1"; |
600ea5cd APR |
252 | } else |
253 | imx51_add_sdhci_esdhc_imx(0, &sd_pdata); | |
9d2c0ef7 | 254 | |
5b8d628c | 255 | gpio_led_register_device(-1, &mx51_efikamx_leds_data); |
ba8a6c04 | 256 | imx_add_gpio_keys(&mx51_efikamx_powerkey_data); |
c6e34a4c | 257 | |
c2932bf4 APR |
258 | if (system_rev == 0x11) { |
259 | gpio_request(EFIKAMX_RESET1_1, "reset"); | |
260 | gpio_direction_output(EFIKAMX_RESET1_1, 1); | |
261 | } else { | |
262 | gpio_request(EFIKAMX_RESET, "reset"); | |
263 | gpio_direction_output(EFIKAMX_RESET, 1); | |
264 | } | |
9d72af6e APR |
265 | |
266 | /* | |
267 | * enable wifi by default only on mx | |
268 | * sb and mx have same wlan pin but the value to enable it are | |
269 | * different :/ | |
270 | */ | |
271 | gpio_request(EFIKA_WLAN_EN, "wlan_en"); | |
272 | gpio_direction_output(EFIKA_WLAN_EN, 0); | |
273 | msleep(10); | |
274 | ||
275 | gpio_request(EFIKA_WLAN_RESET, "wlan_rst"); | |
276 | gpio_direction_output(EFIKA_WLAN_RESET, 0); | |
277 | msleep(10); | |
278 | gpio_set_value(EFIKA_WLAN_RESET, 1); | |
088d01b0 AK |
279 | } |
280 | ||
281 | static void __init mx51_efikamx_timer_init(void) | |
282 | { | |
283 | mx51_clocks_init(32768, 24000000, 22579200, 24576000); | |
284 | } | |
285 | ||
e134fb2b UKK |
286 | static struct sys_timer mx51_efikamx_timer = { |
287 | .init = mx51_efikamx_timer_init, | |
088d01b0 AK |
288 | }; |
289 | ||
33076883 | 290 | MACHINE_START(MX51_EFIKAMX, "Genesi Efika MX (Smarttop)") |
6192935c | 291 | .atag_offset = 0x100, |
088d01b0 | 292 | .map_io = mx51_map_io, |
ab130421 | 293 | .init_early = imx51_init_early, |
088d01b0 | 294 | .init_irq = mx51_init_irq, |
ffa2ea3f | 295 | .handle_irq = imx51_handle_irq, |
e134fb2b UKK |
296 | .timer = &mx51_efikamx_timer, |
297 | .init_machine = mx51_efikamx_init, | |
8321b758 | 298 | .init_late = mx51_efikamx_init_late, |
65ea7884 | 299 | .restart = mx51_efikamx_restart, |
088d01b0 | 300 | MACHINE_END |