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/fsl_devices.h>
  26 #include <linux/spi/flash.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/mfd/mc13892.h>
  29 #include <linux/regulator/machine.h>
  30 #include <linux/regulator/consumer.h>
  31 #include <linux/usb/otg.h>
  32 #include <linux/usb/ulpi.h>
  33 #include <mach/ulpi.h>
  34
  35 #include <mach/common.h>
  36 #include <mach/hardware.h>
  37 #include <mach/iomux-mx51.h>
  38 #include <mach/i2c.h>
  39 #include <mach/mxc_ehci.h>
  40
  41 #include <asm/irq.h>
  42 #include <asm/setup.h>
  43 #include <asm/mach-types.h>
  44 #include <asm/mach/arch.h>
  45 #include <asm/mach/time.h>
  46
  47 #include "devices-imx51.h"
  48 #include "devices.h"
  49 #include "efika.h"
  50
  51 #define EFIKASB_USBH2_STP       IMX_GPIO_NR(2, 20)
  52 #define EFIKASB_GREEN_LED       IMX_GPIO_NR(1, 3)
  53 #define EFIKASB_WHITE_LED       IMX_GPIO_NR(2, 25)
  54 #define EFIKASB_PCBID0          IMX_GPIO_NR(2, 28)
  55 #define EFIKASB_PCBID1          IMX_GPIO_NR(2, 29)
  56 #define EFIKASB_PWRKEY          IMX_GPIO_NR(2, 31)
  57 #define EFIKASB_LID             IMX_GPIO_NR(3, 14)
  58 #define EFIKASB_POWEROFF        IMX_GPIO_NR(4, 13)
  59 #define EFIKASB_RFKILL          IMX_GPIO_NR(3, 1)
  60
  61 #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0,   0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
  62
  63 static iomux_v3_cfg_t mx51efikasb_pads[] = {
  64         /* USB HOST2 */
  65         MX51_PAD_EIM_D16__USBH2_DATA0,
  66         MX51_PAD_EIM_D17__USBH2_DATA1,
  67         MX51_PAD_EIM_D18__USBH2_DATA2,
  68         MX51_PAD_EIM_D19__USBH2_DATA3,
  69         MX51_PAD_EIM_D20__USBH2_DATA4,
  70         MX51_PAD_EIM_D21__USBH2_DATA5,
  71         MX51_PAD_EIM_D22__USBH2_DATA6,
  72         MX51_PAD_EIM_D23__USBH2_DATA7,
  73         MX51_PAD_EIM_A24__USBH2_CLK,
  74         MX51_PAD_EIM_A25__USBH2_DIR,
  75         MX51_PAD_EIM_A26__USBH2_STP,
  76         MX51_PAD_EIM_A27__USBH2_NXT,
  77
  78         /* leds */
  79         MX51_PAD_EIM_CS0__GPIO2_25,
  80         MX51_PAD_GPIO1_3__GPIO1_3,
  81
  82         /* pcb id */
  83         MX51_PAD_EIM_CS3__GPIO2_28,
  84         MX51_PAD_EIM_CS4__GPIO2_29,
  85
  86         /* lid */
  87         MX51_PAD_CSI1_VSYNC__GPIO3_14,
  88
  89         /* power key*/
  90         MX51_PAD_PWRKEY,
  91
  92         /* wifi/bt button */
  93         MX51_PAD_DI1_PIN12__GPIO3_1,
  94
  95         /* power off */
  96         MX51_PAD_CSI2_VSYNC__GPIO4_13,
  97
  98         /* wdog reset */
  99         MX51_PAD_GPIO1_4__WDOG1_WDOG_B,
 100
 101         /* BT */
 102         MX51_PAD_EIM_A17__GPIO2_11,
 103 };
 104
 105 static int initialize_usbh2_port(struct platform_device *pdev)
 106 {
 107         iomux_v3_cfg_t usbh2stp = MX51_PAD_EIM_A26__USBH2_STP;
 108         iomux_v3_cfg_t usbh2gpio = MX51_PAD_EIM_A26__GPIO2_20;
 109
 110         mxc_iomux_v3_setup_pad(usbh2gpio);
 111         gpio_request(EFIKASB_USBH2_STP, "usbh2_stp");
 112         gpio_direction_output(EFIKASB_USBH2_STP, 0);
 113         msleep(1);
 114         gpio_set_value(EFIKASB_USBH2_STP, 1);
 115         msleep(1);
 116
 117         gpio_free(EFIKASB_USBH2_STP);
 118         mxc_iomux_v3_setup_pad(usbh2stp);
 119
 120         mdelay(10);
 121
 122         return mx51_initialize_usb_hw(pdev->id, MXC_EHCI_ITC_NO_THRESHOLD);
 123 }
 124
 125 static struct mxc_usbh_platform_data usbh2_config = {
 126         .init   = initialize_usbh2_port,
 127         .portsc = MXC_EHCI_MODE_ULPI,
 128 };
 129
 130 static void __init mx51_efikasb_usb(void)
 131 {
 132         usbh2_config.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 133                         ULPI_OTG_DRVVBUS_EXT | ULPI_OTG_EXTVBUSIND);
 134         if (usbh2_config.otg)
 135                 mxc_register_device(&mxc_usbh2_device, &usbh2_config);
 136 }
 137
 138 static struct gpio_led mx51_efikasb_leds[] = {
 139         {
 140                 .name = "efikasb:green",
 141                 .default_trigger = "default-on",
 142                 .gpio = EFIKASB_GREEN_LED,
 143                 .active_low = 1,
 144         },
 145         {
 146                 .name = "efikasb:white",
 147                 .default_trigger = "caps",
 148                 .gpio = EFIKASB_WHITE_LED,
 149         },
 150 };
 151
 152 static struct gpio_led_platform_data mx51_efikasb_leds_data = {
 153         .leds = mx51_efikasb_leds,
 154         .num_leds = ARRAY_SIZE(mx51_efikasb_leds),
 155 };
 156
 157 static struct platform_device mx51_efikasb_leds_device = {
 158         .name = "leds-gpio",
 159         .id = -1,
 160         .dev = {
 161                 .platform_data = &mx51_efikasb_leds_data,
 162         },
 163 };
 164
 165 static struct gpio_keys_button mx51_efikasb_keys[] = {
 166         {
 167                 .code = KEY_POWER,
 168                 .gpio = EFIKASB_PWRKEY,
 169                 .type = EV_PWR,
 170                 .desc = "Power Button",
 171                 .wakeup = 1,
 172                 .debounce_interval = 10, /* ms */
 173         },
 174         {
 175                 .code = SW_LID,
 176                 .gpio = EFIKASB_LID,
 177                 .type = EV_SW,
 178                 .desc = "Lid Switch",
 179         },
 180         {
 181                 /* SW_RFKILLALL vs KEY_RFKILL ? */
 182                 .code = SW_RFKILL_ALL,
 183                 .gpio = EFIKASB_RFKILL,
 184                 .type = EV_SW,
 185                 .desc = "rfkill",
 186         },
 187 };
 188
 189 static const struct gpio_keys_platform_data mx51_efikasb_keys_data __initconst = {
 190         .buttons = mx51_efikasb_keys,
 191         .nbuttons = ARRAY_SIZE(mx51_efikasb_keys),
 192 };
 193
 194 static struct regulator *pwgt1, *pwgt2;
 195
 196 static void mx51_efikasb_power_off(void)
 197 {
 198         gpio_set_value(EFIKA_USB_PHY_RESET, 0);
 199
 200         if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
 201                 regulator_disable(pwgt2);
 202                 regulator_disable(pwgt1);
 203         }
 204         gpio_direction_output(EFIKASB_POWEROFF, 1);
 205 }
 206
 207 static int __init mx51_efikasb_power_init(void)
 208 {
 209         if (machine_is_mx51_efikasb()) {
 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(EFIKASB_POWEROFF, "poweroff");
 217                 pm_power_off = mx51_efikasb_power_off;
 218
 219                 regulator_has_full_constraints();
 220         }
 221
 222         return 0;
 223 }
 224 late_initcall(mx51_efikasb_power_init);
 225
 226 /* 01     R1.3 board
 227    10     R2.0 board */
 228 static void __init mx51_efikasb_board_id(void)
 229 {
 230         int id;
 231
 232         gpio_request(EFIKASB_PCBID0, "pcb id0");
 233         gpio_direction_input(EFIKASB_PCBID0);
 234         gpio_request(EFIKASB_PCBID1, "pcb id1");
 235         gpio_direction_input(EFIKASB_PCBID1);
 236
 237         id = gpio_get_value(EFIKASB_PCBID0);
 238         id |= gpio_get_value(EFIKASB_PCBID1) << 1;
 239
 240         switch (id) {
 241         default:
 242                 break;
 243         case 1:
 244                 system_rev = 0x13;
 245                 break;
 246         case 2:
 247                 system_rev = 0x20;
 248                 break;
 249         }
 250 }
 251
 252 static void __init efikasb_board_init(void)
 253 {
 254         mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
 255                                         ARRAY_SIZE(mx51efikasb_pads));
 256         efika_board_common_init();
 257
 258         mx51_efikasb_board_id();
 259         mx51_efikasb_usb();
 260         imx51_add_sdhci_esdhc_imx(1, NULL);
 261
 262         platform_device_register(&mx51_efikasb_leds_device);
 263         imx51_add_gpio_keys(&mx51_efikasb_keys_data);
 264
 265 }
 266
 267 static void __init mx51_efikasb_timer_init(void)
 268 {
 269         mx51_clocks_init(32768, 24000000, 22579200, 24576000);
 270 }
 271
 272 static struct sys_timer mx51_efikasb_timer = {
 273         .init   = mx51_efikasb_timer_init,
 274 };
 275
 276 MACHINE_START(MX51_EFIKASB, "Genesi Efika Smartbook")
 277         .boot_params = MX51_PHYS_OFFSET + 0x100,
 278         .map_io = mx51_map_io,
 279         .init_early = imx51_init_early,
 280         .init_irq = mx51_init_irq,
 281         .init_machine =  efikasb_board_init,
 282         .timer = &mx51_efikasb_timer,
 283 MACHINE_END