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