276 lines
6.4 KiB
C
276 lines
6.4 KiB
C
/*
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* Copyright (C) Arnaud Patard <arnaud.patard@rtp-net.org>
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*
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* based on code from the following
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* Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
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* Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/leds.h>
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#include <linux/input.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/spi/flash.h>
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#include <linux/spi/spi.h>
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#include <linux/mfd/mc13892.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/consumer.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/ulpi.h>
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#include <mach/ulpi.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/iomux-mx51.h>
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#include <asm/irq.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include "devices-imx51.h"
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#include "devices.h"
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#include "efika.h"
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#define EFIKASB_USBH2_STP IMX_GPIO_NR(2, 20)
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#define EFIKASB_GREEN_LED IMX_GPIO_NR(1, 3)
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#define EFIKASB_WHITE_LED IMX_GPIO_NR(2, 25)
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#define EFIKASB_PCBID0 IMX_GPIO_NR(2, 28)
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#define EFIKASB_PCBID1 IMX_GPIO_NR(2, 29)
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#define EFIKASB_PWRKEY IMX_GPIO_NR(2, 31)
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#define EFIKASB_LID IMX_GPIO_NR(3, 14)
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#define EFIKASB_POWEROFF IMX_GPIO_NR(4, 13)
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#define EFIKASB_RFKILL IMX_GPIO_NR(3, 1)
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#define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
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static iomux_v3_cfg_t mx51efikasb_pads[] = {
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/* USB HOST2 */
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MX51_PAD_EIM_D16__USBH2_DATA0,
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MX51_PAD_EIM_D17__USBH2_DATA1,
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MX51_PAD_EIM_D18__USBH2_DATA2,
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MX51_PAD_EIM_D19__USBH2_DATA3,
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MX51_PAD_EIM_D20__USBH2_DATA4,
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MX51_PAD_EIM_D21__USBH2_DATA5,
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MX51_PAD_EIM_D22__USBH2_DATA6,
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MX51_PAD_EIM_D23__USBH2_DATA7,
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MX51_PAD_EIM_A24__USBH2_CLK,
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MX51_PAD_EIM_A25__USBH2_DIR,
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MX51_PAD_EIM_A26__USBH2_STP,
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MX51_PAD_EIM_A27__USBH2_NXT,
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/* leds */
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MX51_PAD_EIM_CS0__GPIO2_25,
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MX51_PAD_GPIO1_3__GPIO1_3,
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/* pcb id */
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MX51_PAD_EIM_CS3__GPIO2_28,
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MX51_PAD_EIM_CS4__GPIO2_29,
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/* lid */
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MX51_PAD_CSI1_VSYNC__GPIO3_14,
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/* power key*/
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MX51_PAD_PWRKEY,
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/* wifi/bt button */
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MX51_PAD_DI1_PIN12__GPIO3_1,
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/* power off */
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MX51_PAD_CSI2_VSYNC__GPIO4_13,
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/* wdog reset */
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MX51_PAD_GPIO1_4__WDOG1_WDOG_B,
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/* BT */
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MX51_PAD_EIM_A17__GPIO2_11,
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};
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static int initialize_usbh2_port(struct platform_device *pdev)
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{
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iomux_v3_cfg_t usbh2stp = MX51_PAD_EIM_A26__USBH2_STP;
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iomux_v3_cfg_t usbh2gpio = MX51_PAD_EIM_A26__GPIO2_20;
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mxc_iomux_v3_setup_pad(usbh2gpio);
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gpio_request(EFIKASB_USBH2_STP, "usbh2_stp");
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gpio_direction_output(EFIKASB_USBH2_STP, 0);
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msleep(1);
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gpio_set_value(EFIKASB_USBH2_STP, 1);
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msleep(1);
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gpio_free(EFIKASB_USBH2_STP);
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mxc_iomux_v3_setup_pad(usbh2stp);
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mdelay(10);
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return mx51_initialize_usb_hw(pdev->id, MXC_EHCI_ITC_NO_THRESHOLD);
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}
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static struct mxc_usbh_platform_data usbh2_config = {
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.init = initialize_usbh2_port,
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.portsc = MXC_EHCI_MODE_ULPI,
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};
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static void __init mx51_efikasb_usb(void)
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{
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usbh2_config.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
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ULPI_OTG_DRVVBUS_EXT | ULPI_OTG_EXTVBUSIND);
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if (usbh2_config.otg)
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mxc_register_device(&mxc_usbh2_device, &usbh2_config);
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}
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static const struct gpio_led mx51_efikasb_leds[] __initconst = {
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{
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.name = "efikasb:green",
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.default_trigger = "default-on",
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.gpio = EFIKASB_GREEN_LED,
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.active_low = 1,
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},
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{
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.name = "efikasb:white",
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.default_trigger = "caps",
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.gpio = EFIKASB_WHITE_LED,
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},
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};
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static const struct gpio_led_platform_data
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mx51_efikasb_leds_data __initconst = {
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.leds = mx51_efikasb_leds,
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.num_leds = ARRAY_SIZE(mx51_efikasb_leds),
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};
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static struct gpio_keys_button mx51_efikasb_keys[] = {
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{
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.code = KEY_POWER,
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.gpio = EFIKASB_PWRKEY,
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.type = EV_KEY,
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.desc = "Power Button",
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.wakeup = 1,
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.active_low = 1,
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},
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{
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.code = SW_LID,
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.gpio = EFIKASB_LID,
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.type = EV_SW,
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.desc = "Lid Switch",
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.active_low = 1,
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},
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{
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.code = KEY_RFKILL,
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.gpio = EFIKASB_RFKILL,
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.type = EV_KEY,
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.desc = "rfkill",
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.active_low = 1,
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},
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};
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static const struct gpio_keys_platform_data mx51_efikasb_keys_data __initconst = {
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.buttons = mx51_efikasb_keys,
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.nbuttons = ARRAY_SIZE(mx51_efikasb_keys),
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};
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static struct regulator *pwgt1, *pwgt2;
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static void mx51_efikasb_power_off(void)
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{
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gpio_set_value(EFIKA_USB_PHY_RESET, 0);
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if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
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regulator_disable(pwgt2);
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regulator_disable(pwgt1);
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}
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gpio_direction_output(EFIKASB_POWEROFF, 1);
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}
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static int __init mx51_efikasb_power_init(void)
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{
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if (machine_is_mx51_efikasb()) {
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pwgt1 = regulator_get(NULL, "pwgt1");
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pwgt2 = regulator_get(NULL, "pwgt2");
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if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
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regulator_enable(pwgt1);
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regulator_enable(pwgt2);
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}
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gpio_request(EFIKASB_POWEROFF, "poweroff");
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pm_power_off = mx51_efikasb_power_off;
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regulator_has_full_constraints();
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}
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return 0;
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}
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late_initcall(mx51_efikasb_power_init);
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/* 01 R1.3 board
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10 R2.0 board */
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static void __init mx51_efikasb_board_id(void)
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{
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int id;
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gpio_request(EFIKASB_PCBID0, "pcb id0");
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gpio_direction_input(EFIKASB_PCBID0);
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gpio_request(EFIKASB_PCBID1, "pcb id1");
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gpio_direction_input(EFIKASB_PCBID1);
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id = gpio_get_value(EFIKASB_PCBID0) ? 1 : 0;
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id |= (gpio_get_value(EFIKASB_PCBID1) ? 1 : 0) << 1;
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switch (id) {
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default:
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break;
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case 1:
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system_rev = 0x13;
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break;
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case 2:
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system_rev = 0x20;
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break;
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}
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}
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static void __init efikasb_board_init(void)
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{
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imx51_soc_init();
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mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
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ARRAY_SIZE(mx51efikasb_pads));
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efika_board_common_init();
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mx51_efikasb_board_id();
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mx51_efikasb_usb();
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imx51_add_sdhci_esdhc_imx(1, NULL);
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gpio_led_register_device(-1, &mx51_efikasb_leds_data);
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imx_add_gpio_keys(&mx51_efikasb_keys_data);
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}
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static void __init mx51_efikasb_timer_init(void)
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{
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mx51_clocks_init(32768, 24000000, 22579200, 24576000);
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}
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static struct sys_timer mx51_efikasb_timer = {
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.init = mx51_efikasb_timer_init,
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};
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MACHINE_START(MX51_EFIKASB, "Genesi Efika Smartbook")
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.atag_offset = 0x100,
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.map_io = mx51_map_io,
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.init_early = imx51_init_early,
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.init_irq = mx51_init_irq,
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.init_machine = efikasb_board_init,
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.timer = &mx51_efikasb_timer,
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MACHINE_END
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