arch/arm/mach-mx5/board-mx51_efikasb.c

   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/irq.h>
  39 #include <asm/setup.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 "devices.h"
  46 #include "efika.h"
  47
  48 #define EFIKASB_USBH2_STP       IMX_GPIO_NR(2, 20)
  49 #define EFIKASB_GREEN_LED       IMX_GPIO_NR(1, 3)
  50 #define EFIKASB_WHITE_LED       IMX_GPIO_NR(2, 25)
  51 #define EFIKASB_PCBID0          IMX_GPIO_NR(2, 28)
  52 #define EFIKASB_PCBID1          IMX_GPIO_NR(2, 29)
  53 #define EFIKASB_PWRKEY          IMX_GPIO_NR(2, 31)
  54 #define EFIKASB_LID             IMX_GPIO_NR(3, 14)
  55 #define EFIKASB_POWEROFF        IMX_GPIO_NR(4, 13)
  56 #define EFIKASB_RFKILL          IMX_GPIO_NR(3, 1)
  57
  58 #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0,   0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
  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
 102 static int initialize_usbh2_port(struct platform_device *pdev)
 103 {
 104         iomux_v3_cfg_t usbh2stp = MX51_PAD_EIM_A26__USBH2_STP;
 105         iomux_v3_cfg_t usbh2gpio = MX51_PAD_EIM_A26__GPIO2_20;
 106
 107         mxc_iomux_v3_setup_pad(usbh2gpio);
 108         gpio_request(EFIKASB_USBH2_STP, "usbh2_stp");
 109         gpio_direction_output(EFIKASB_USBH2_STP, 0);
 110         msleep(1);
 111         gpio_set_value(EFIKASB_USBH2_STP, 1);
 112         msleep(1);
 113
 114         gpio_free(EFIKASB_USBH2_STP);
 115         mxc_iomux_v3_setup_pad(usbh2stp);
 116
 117         mdelay(10);
 118
 119         return mx51_initialize_usb_hw(pdev->id, MXC_EHCI_ITC_NO_THRESHOLD);
 120 }
 121
 122 static struct mxc_usbh_platform_data usbh2_config = {
 123         .init   = initialize_usbh2_port,
 124         .portsc = MXC_EHCI_MODE_ULPI,
 125 };
 126
 127 static void __init mx51_efikasb_usb(void)
 128 {
 129         usbh2_config.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 130                         ULPI_OTG_DRVVBUS_EXT | ULPI_OTG_EXTVBUSIND);
 131         if (usbh2_config.otg)
 132                 mxc_register_device(&mxc_usbh2_device, &usbh2_config);
 133 }
 134
 135 static struct gpio_led mx51_efikasb_leds[] = {
 136         {
 137                 .name = "efikasb:green",
 138                 .default_trigger = "default-on",
 139                 .gpio = EFIKASB_GREEN_LED,
 140                 .active_low = 1,
 141         },
 142         {
 143                 .name = "efikasb:white",
 144                 .default_trigger = "caps",
 145                 .gpio = EFIKASB_WHITE_LED,
 146         },
 147 };
 148
 149 static struct gpio_led_platform_data mx51_efikasb_leds_data = {
 150         .leds = mx51_efikasb_leds,
 151         .num_leds = ARRAY_SIZE(mx51_efikasb_leds),
 152 };
 153
 154 static struct platform_device mx51_efikasb_leds_device = {
 155         .name = "leds-gpio",
 156         .id = -1,
 157         .dev = {
 158                 .platform_data = &mx51_efikasb_leds_data,
 159         },
 160 };
 161
 162 static struct gpio_keys_button mx51_efikasb_keys[] = {
 163         {
 164                 .code = KEY_POWER,
 165                 .gpio = EFIKASB_PWRKEY,
 166                 .type = EV_PWR,
 167                 .desc = "Power Button",
 168                 .wakeup = 1,
 169                 .debounce_interval = 10, /* ms */
 170         },
 171         {
 172                 .code = SW_LID,
 173                 .gpio = EFIKASB_LID,
 174                 .type = EV_SW,
 175                 .desc = "Lid Switch",
 176         },
 177         {
 178                 /* SW_RFKILLALL vs KEY_RFKILL ? */
 179                 .code = SW_RFKILL_ALL,
 180                 .gpio = EFIKASB_RFKILL,
 181                 .type = EV_SW,
 182                 .desc = "rfkill",
 183         },
 184 };
 185
 186 static const struct gpio_keys_platform_data mx51_efikasb_keys_data __initconst = {
 187         .buttons = mx51_efikasb_keys,
 188         .nbuttons = ARRAY_SIZE(mx51_efikasb_keys),
 189 };
 190
 191 static struct regulator *pwgt1, *pwgt2;
 192
 193 static void mx51_efikasb_power_off(void)
 194 {
 195         gpio_set_value(EFIKA_USB_PHY_RESET, 0);
 196
 197         if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
 198                 regulator_disable(pwgt2);
 199                 regulator_disable(pwgt1);
 200         }
 201         gpio_direction_output(EFIKASB_POWEROFF, 1);
 202 }
 203
 204 static int __init mx51_efikasb_power_init(void)
 205 {
 206         if (machine_is_mx51_efikasb()) {
 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(EFIKASB_POWEROFF, "poweroff");
 214                 pm_power_off = mx51_efikasb_power_off;
 215
 216                 regulator_has_full_constraints();
 217         }
 218
 219         return 0;
 220 }
 221 late_initcall(mx51_efikasb_power_init);
 222
 223 /* 01     R1.3 board
 224    10     R2.0 board */
 225 static void __init mx51_efikasb_board_id(void)
 226 {
 227         int id;
 228
 229         gpio_request(EFIKASB_PCBID0, "pcb id0");
 230         gpio_direction_input(EFIKASB_PCBID0);
 231         gpio_request(EFIKASB_PCBID1, "pcb id1");
 232         gpio_direction_input(EFIKASB_PCBID1);
 233
 234         id = gpio_get_value(EFIKASB_PCBID0);
 235         id |= gpio_get_value(EFIKASB_PCBID1) << 1;
 236
 237         switch (id) {
 238         default:
 239                 break;
 240         case 1:
 241                 system_rev = 0x13;
 242                 break;
 243         case 2:
 244                 system_rev = 0x20;
 245                 break;
 246         }
 247 }
 248
 249 static void __init efikasb_board_init(void)
 250 {
 251         mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
 252                                         ARRAY_SIZE(mx51efikasb_pads));
 253         efika_board_common_init();
 254
 255         mx51_efikasb_board_id();
 256         mx51_efikasb_usb();
 257         imx51_add_sdhci_esdhc_imx(1, NULL);
 258
 259         platform_device_register(&mx51_efikasb_leds_device);
 260         imx_add_gpio_keys(&mx51_efikasb_keys_data);
 261
 262 }
 263
 264 static void __init mx51_efikasb_timer_init(void)
 265 {
 266         mx51_clocks_init(32768, 24000000, 22579200, 24576000);
 267 }
 268
 269 static struct sys_timer mx51_efikasb_timer = {
 270         .init   = mx51_efikasb_timer_init,
 271 };
 272
 273 MACHINE_START(MX51_EFIKASB, "Genesi Efika Smartbook")
 274         .boot_params = MX51_PHYS_OFFSET + 0x100,
 275         .map_io = mx51_map_io,
 276         .init_early = imx51_init_early,
 277         .init_irq = mx51_init_irq,
 278         .init_machine =  efikasb_board_init,
 279         .timer = &mx51_efikasb_timer,
 280 MACHINE_END