1 /*
2 * Copyright (C) Arnaud Patard <arnaud.patard@rtp-net.org>
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 #include <linux/usb/otg.h>
31 #include <linux/usb/ulpi.h>
32 #include <mach/ulpi.h>
33
34 #include <mach/common.h>
35 #include <mach/hardware.h>
36 #include <mach/iomux-mx51.h>
37
38 #include <asm/setup.h>
39 #include <asm/system_info.h>
40 #include <asm/mach-types.h>
41 #include <asm/mach/arch.h>
42 #include <asm/mach/time.h>
43
44 #include "devices-imx51.h"
45 #include "efika.h"
46
47 #define EFIKASB_USBH2_STP IMX_GPIO_NR(2, 20)
48 #define EFIKASB_GREEN_LED IMX_GPIO_NR(1, 3)
49 #define EFIKASB_WHITE_LED IMX_GPIO_NR(2, 25)
50 #define EFIKASB_PCBID0 IMX_GPIO_NR(2, 28)
51 #define EFIKASB_PCBID1 IMX_GPIO_NR(2, 29)
52 #define EFIKASB_PWRKEY IMX_GPIO_NR(2, 31)
53 #define EFIKASB_LID IMX_GPIO_NR(3, 14)
54 #define EFIKASB_POWEROFF IMX_GPIO_NR(4, 13)
55 #define EFIKASB_RFKILL IMX_GPIO_NR(3, 1)
56
57 #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
58 #define MX51_PAD_SD1_CD IOMUX_PAD(0x47c, 0x0e8, 1, __NA_, 0, MX51_ESDHC_PAD_CTRL)
59
60 static iomux_v3_cfg_t mx51efikasb_pads[] = {
61 /* USB HOST2 */
62 MX51_PAD_EIM_D16__USBH2_DATA0,
63 MX51_PAD_EIM_D17__USBH2_DATA1,
64 MX51_PAD_EIM_D18__USBH2_DATA2,
65 MX51_PAD_EIM_D19__USBH2_DATA3,
66 MX51_PAD_EIM_D20__USBH2_DATA4,
67 MX51_PAD_EIM_D21__USBH2_DATA5,
68 MX51_PAD_EIM_D22__USBH2_DATA6,
69 MX51_PAD_EIM_D23__USBH2_DATA7,
70 MX51_PAD_EIM_A24__USBH2_CLK,
71 MX51_PAD_EIM_A25__USBH2_DIR,
72 MX51_PAD_EIM_A26__USBH2_STP,
73 MX51_PAD_EIM_A27__USBH2_NXT,
74
75 /* leds */
76 MX51_PAD_EIM_CS0__GPIO2_25,
77 MX51_PAD_GPIO1_3__GPIO1_3,
78
79 /* pcb id */
80 MX51_PAD_EIM_CS3__GPIO2_28,
81 MX51_PAD_EIM_CS4__GPIO2_29,
82
83 /* lid */
84 MX51_PAD_CSI1_VSYNC__GPIO3_14,
85
86 /* power key*/
87 MX51_PAD_PWRKEY,
88
89 /* wifi/bt button */
90 MX51_PAD_DI1_PIN12__GPIO3_1,
91
92 /* power off */
93 MX51_PAD_CSI2_VSYNC__GPIO4_13,
94
95 /* wdog reset */
96 MX51_PAD_GPIO1_4__WDOG1_WDOG_B,
97
98 /* BT */
99 MX51_PAD_EIM_A17__GPIO2_11,
100
101 MX51_PAD_SD1_CD,
102 };
103
initialize_usbh2_port(struct platform_device * pdev)104 static int initialize_usbh2_port(struct platform_device *pdev)
105 {
106 iomux_v3_cfg_t usbh2stp = MX51_PAD_EIM_A26__USBH2_STP;
107 iomux_v3_cfg_t usbh2gpio = MX51_PAD_EIM_A26__GPIO2_20;
108
109 mxc_iomux_v3_setup_pad(usbh2gpio);
110 gpio_request(EFIKASB_USBH2_STP, "usbh2_stp");
111 gpio_direction_output(EFIKASB_USBH2_STP, 0);
112 msleep(1);
113 gpio_set_value(EFIKASB_USBH2_STP, 1);
114 msleep(1);
115
116 gpio_free(EFIKASB_USBH2_STP);
117 mxc_iomux_v3_setup_pad(usbh2stp);
118
119 mdelay(10);
120
121 return mx51_initialize_usb_hw(pdev->id, MXC_EHCI_ITC_NO_THRESHOLD);
122 }
123
124 static struct mxc_usbh_platform_data usbh2_config __initdata = {
125 .init = initialize_usbh2_port,
126 .portsc = MXC_EHCI_MODE_ULPI,
127 };
128
mx51_efikasb_usb(void)129 static void __init mx51_efikasb_usb(void)
130 {
131 usbh2_config.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
132 ULPI_OTG_DRVVBUS_EXT | ULPI_OTG_EXTVBUSIND);
133 if (usbh2_config.otg)
134 imx51_add_mxc_ehci_hs(2, &usbh2_config);
135 }
136
137 static const struct gpio_led mx51_efikasb_leds[] __initconst = {
138 {
139 .name = "efikasb:green",
140 .default_trigger = "default-on",
141 .gpio = EFIKASB_GREEN_LED,
142 .active_low = 1,
143 },
144 {
145 .name = "efikasb:white",
146 .default_trigger = "caps",
147 .gpio = EFIKASB_WHITE_LED,
148 },
149 };
150
151 static const struct gpio_led_platform_data
152 mx51_efikasb_leds_data __initconst = {
153 .leds = mx51_efikasb_leds,
154 .num_leds = ARRAY_SIZE(mx51_efikasb_leds),
155 };
156
157 static struct gpio_keys_button mx51_efikasb_keys[] = {
158 {
159 .code = KEY_POWER,
160 .gpio = EFIKASB_PWRKEY,
161 .type = EV_KEY,
162 .desc = "Power Button",
163 .wakeup = 1,
164 .active_low = 1,
165 },
166 {
167 .code = SW_LID,
168 .gpio = EFIKASB_LID,
169 .type = EV_SW,
170 .desc = "Lid Switch",
171 .active_low = 1,
172 },
173 {
174 .code = KEY_RFKILL,
175 .gpio = EFIKASB_RFKILL,
176 .type = EV_KEY,
177 .desc = "rfkill",
178 .active_low = 1,
179 },
180 };
181
182 static const struct gpio_keys_platform_data mx51_efikasb_keys_data __initconst = {
183 .buttons = mx51_efikasb_keys,
184 .nbuttons = ARRAY_SIZE(mx51_efikasb_keys),
185 };
186
187 static struct esdhc_platform_data sd0_pdata = {
188 #define EFIKASB_SD1_CD IMX_GPIO_NR(2, 27)
189 .cd_gpio = EFIKASB_SD1_CD,
190 .cd_type = ESDHC_CD_GPIO,
191 .wp_type = ESDHC_WP_CONTROLLER,
192 };
193
194 static struct esdhc_platform_data sd1_pdata = {
195 .cd_type = ESDHC_CD_CONTROLLER,
196 .wp_type = ESDHC_WP_CONTROLLER,
197 };
198
199 static struct regulator *pwgt1, *pwgt2;
200
mx51_efikasb_power_off(void)201 static void mx51_efikasb_power_off(void)
202 {
203 gpio_set_value(EFIKA_USB_PHY_RESET, 0);
204
205 if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
206 regulator_disable(pwgt2);
207 regulator_disable(pwgt1);
208 }
209 gpio_direction_output(EFIKASB_POWEROFF, 1);
210 }
211
mx51_efikasb_power_init(void)212 static int __init mx51_efikasb_power_init(void)
213 {
214 if (machine_is_mx51_efikasb()) {
215 pwgt1 = regulator_get(NULL, "pwgt1");
216 pwgt2 = regulator_get(NULL, "pwgt2");
217 if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
218 regulator_enable(pwgt1);
219 regulator_enable(pwgt2);
220 }
221 gpio_request(EFIKASB_POWEROFF, "poweroff");
222 pm_power_off = mx51_efikasb_power_off;
223
224 regulator_has_full_constraints();
225 }
226
227 return 0;
228 }
229 late_initcall(mx51_efikasb_power_init);
230
231 /* 01 R1.3 board
232 10 R2.0 board */
mx51_efikasb_board_id(void)233 static void __init mx51_efikasb_board_id(void)
234 {
235 int id;
236
237 gpio_request(EFIKASB_PCBID0, "pcb id0");
238 gpio_direction_input(EFIKASB_PCBID0);
239 gpio_request(EFIKASB_PCBID1, "pcb id1");
240 gpio_direction_input(EFIKASB_PCBID1);
241
242 id = gpio_get_value(EFIKASB_PCBID0) ? 1 : 0;
243 id |= (gpio_get_value(EFIKASB_PCBID1) ? 1 : 0) << 1;
244
245 switch (id) {
246 default:
247 break;
248 case 1:
249 system_rev = 0x13;
250 break;
251 case 2:
252 system_rev = 0x20;
253 break;
254 }
255 }
256
efikasb_board_init(void)257 static void __init efikasb_board_init(void)
258 {
259 imx51_soc_init();
260
261 mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
262 ARRAY_SIZE(mx51efikasb_pads));
263 efika_board_common_init();
264
265 mx51_efikasb_board_id();
266 mx51_efikasb_usb();
267 imx51_add_sdhci_esdhc_imx(0, &sd0_pdata);
268 imx51_add_sdhci_esdhc_imx(1, &sd1_pdata);
269
270 gpio_led_register_device(-1, &mx51_efikasb_leds_data);
271 imx_add_gpio_keys(&mx51_efikasb_keys_data);
272 }
273
mx51_efikasb_timer_init(void)274 static void __init mx51_efikasb_timer_init(void)
275 {
276 mx51_clocks_init(32768, 24000000, 22579200, 24576000);
277 }
278
279 static struct sys_timer mx51_efikasb_timer = {
280 .init = mx51_efikasb_timer_init,
281 };
282
283 MACHINE_START(MX51_EFIKASB, "Genesi Efika Smartbook")
284 .atag_offset = 0x100,
285 .map_io = mx51_map_io,
286 .init_early = imx51_init_early,
287 .init_irq = mx51_init_irq,
288 .handle_irq = imx51_handle_irq,
289 .init_machine = efikasb_board_init,
290 .timer = &mx51_efikasb_timer,
291 .restart = mxc_restart,
292 MACHINE_END
293