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/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
 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
 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
 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
 212 static int __init mx51_efikasb_power_init(void)
 213 {
 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         return 0;
 226 }
 227
 228 static void __init mx51_efikasb_init_late(void)
 229 {
 230         imx51_init_late();
 231         mx51_efikasb_power_init();
 232 }
 233
 234 /* 01     R1.3 board
 235    10     R2.0 board */
 236 static void __init mx51_efikasb_board_id(void)
 237 {
 238         int id;
 239
 240         gpio_request(EFIKASB_PCBID0, "pcb id0");
 241         gpio_direction_input(EFIKASB_PCBID0);
 242         gpio_request(EFIKASB_PCBID1, "pcb id1");
 243         gpio_direction_input(EFIKASB_PCBID1);
 244
 245         id = gpio_get_value(EFIKASB_PCBID0) ? 1 : 0;
 246         id |= (gpio_get_value(EFIKASB_PCBID1) ? 1 : 0) << 1;
 247
 248         switch (id) {
 249         default:
 250                 break;
 251         case 1:
 252                 system_rev = 0x13;
 253                 break;
 254         case 2:
 255                 system_rev = 0x20;
 256                 break;
 257         }
 258 }
 259
 260 static void __init efikasb_board_init(void)
 261 {
 262         imx51_soc_init();
 263
 264         mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
 265                                         ARRAY_SIZE(mx51efikasb_pads));
 266         efika_board_common_init();
 267
 268         mx51_efikasb_board_id();
 269         mx51_efikasb_usb();
 270         imx51_add_sdhci_esdhc_imx(0, &sd0_pdata);
 271         imx51_add_sdhci_esdhc_imx(1, &sd1_pdata);
 272
 273         gpio_led_register_device(-1, &mx51_efikasb_leds_data);
 274         imx_add_gpio_keys(&mx51_efikasb_keys_data);
 275 }
 276
 277 static void __init mx51_efikasb_timer_init(void)
 278 {
 279         mx51_clocks_init(32768, 24000000, 22579200, 24576000);
 280 }
 281
 282 static struct sys_timer mx51_efikasb_timer = {
 283         .init   = mx51_efikasb_timer_init,
 284 };
 285
 286 MACHINE_START(MX51_EFIKASB, "Genesi Efika MX (Smartbook)")
 287         .atag_offset = 0x100,
 288         .map_io = mx51_map_io,
 289         .init_early = imx51_init_early,
 290         .init_irq = mx51_init_irq,
 291         .handle_irq = imx51_handle_irq,
 292         .init_machine =  efikasb_board_init,
 293         .init_late = mx51_efikasb_init_late,
 294         .timer = &mx51_efikasb_timer,
 295         .restart        = mxc_restart,
 296 MACHINE_END