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