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* HTC Herald board configuration
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* Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
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* Copyright (C) 2009 Wing Linux
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* Based on the board-htcwizard.c file from the linwizard project:
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* Copyright (C) 2006 Unai Uribarri
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* Copyright (C) 2008 linwizard.sourceforge.net
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/htcpld.h>
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#include <linux/leds.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <plat/omap7xx.h>
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#include <plat/common.h>
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#include <plat/board.h>
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#include <plat/keypad.h>
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#include <mach/irqs.h>
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#include <linux/delay.h>
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/* LCD register definition */
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#define OMAP_LCDC_CONTROL (0xfffec000 + 0x00)
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#define OMAP_LCDC_STATUS (0xfffec000 + 0x10)
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#define OMAP_DMA_LCD_CCR (0xfffee300 + 0xc2)
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#define OMAP_DMA_LCD_CTRL (0xfffee300 + 0xc4)
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#define OMAP_LCDC_CTRL_LCD_EN (1 << 0)
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#define OMAP_LCDC_STAT_DONE (1 << 0)
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/* GPIO definitions for the power button and keyboard slide switch */
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#define HTCHERALD_GPIO_POWER 139
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#define HTCHERALD_GPIO_SLIDE 174
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#define HTCHERALD_GIRQ_BTNS 141
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/* GPIO definitions for the touchscreen */
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#define HTCHERALD_GPIO_TS 76
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/* HTCPLD definitions */
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* Function 7 6 5 4 3 2 1 0
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* ------------------------------------
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* DPAD light x x x x x x x 1
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* SoundDev x x x x 1 x x x
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* Screen white 1 x x x x x x x
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* MMC power on x x x x x 1 x x
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* Happy times (n) 0 x x x x 1 x x
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* Function 7 6 5 4 3 2 1 0
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* ------------------------------------
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* Keyboard light x x x x x x x 1
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* LCD Bright (4) x x x x x 1 1 x
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* LCD Bright (3) x x x x x 0 1 x
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* LCD Bright (2) x x x x x 1 0 x
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* LCD Bright (1) x x x x x 0 0 x
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* LCD Off x x x x 0 x x x
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* LCD image (fb) 1 x x x x x x x
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* LCD image (white) 0 x x x x x x x
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* Caps lock LED x x 1 x x x x x
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* Function 7 6 5 4 3 2 1 0
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* ------------------------------------
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* Red (solid) x x x x x 1 x x
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* Red (flash) x x x x x x 1 x
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* Green (GSM flash) x x x x 1 x x x
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* Green (GSM solid) x x x 1 x x x x
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* Green (wifi flash) x x 1 x x x x x
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* Blue (bt flash) x 1 x x x x x x
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* DPAD Int Enable 1 x x x x x x 0
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* (Combinations of the above can be made for different colors.)
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* The direction pad interrupt enable must be set each time the
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* interrupt is handled.
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* Function 7 6 5 4 3 2 1 0
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* ------------------------------------
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* Vibrator x x x x 1 x x x
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* Alt LED x x x 1 x x x x
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* Screen white 1 x x x x x x x
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* Screen white x x 1 x x x x x
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* Screen white x 0 x x x x x x
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* Enable kbd dpad x x x x x x 0 x
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* Happy Times 0 1 0 x x x 0 x
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* HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
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* for the 16 MPUIO lines.
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#define HTCPLD_GPIO_START_OFFSET (OMAP_MAX_GPIO_LINES + 16)
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#define HTCPLD_IRQ(chip, offset) (OMAP_IRQ_END + 8 * (chip) + (offset))
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#define HTCPLD_BASE(chip, offset) \
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(HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
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#define HTCPLD_GPIO_LED_DPAD HTCPLD_BASE(0, 0)
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#define HTCPLD_GPIO_LED_KBD HTCPLD_BASE(1, 0)
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#define HTCPLD_GPIO_LED_CAPS HTCPLD_BASE(1, 5)
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#define HTCPLD_GPIO_LED_RED_FLASH HTCPLD_BASE(2, 1)
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#define HTCPLD_GPIO_LED_RED_SOLID HTCPLD_BASE(2, 2)
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#define HTCPLD_GPIO_LED_GREEN_FLASH HTCPLD_BASE(2, 3)
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#define HTCPLD_GPIO_LED_GREEN_SOLID HTCPLD_BASE(2, 4)
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#define HTCPLD_GPIO_LED_WIFI HTCPLD_BASE(2, 5)
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#define HTCPLD_GPIO_LED_BT HTCPLD_BASE(2, 6)
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#define HTCPLD_GPIO_LED_VIBRATE HTCPLD_BASE(3, 3)
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#define HTCPLD_GPIO_LED_ALT HTCPLD_BASE(3, 4)
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#define HTCPLD_GPIO_RIGHT_KBD HTCPLD_BASE(6, 7)
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#define HTCPLD_GPIO_UP_KBD HTCPLD_BASE(6, 6)
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#define HTCPLD_GPIO_LEFT_KBD HTCPLD_BASE(6, 5)
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#define HTCPLD_GPIO_DOWN_KBD HTCPLD_BASE(6, 4)
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#define HTCPLD_GPIO_RIGHT_DPAD HTCPLD_BASE(7, 7)
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#define HTCPLD_GPIO_UP_DPAD HTCPLD_BASE(7, 6)
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#define HTCPLD_GPIO_LEFT_DPAD HTCPLD_BASE(7, 5)
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#define HTCPLD_GPIO_DOWN_DPAD HTCPLD_BASE(7, 4)
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#define HTCPLD_GPIO_ENTER_DPAD HTCPLD_BASE(7, 3)
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* The htcpld chip requires a gpio write to a specific line
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* to re-enable interrupts after one has occurred.
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#define HTCPLD_GPIO_INT_RESET_HI HTCPLD_BASE(2, 7)
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#define HTCPLD_GPIO_INT_RESET_LO HTCPLD_BASE(2, 0)
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#define HTCPLD_IRQ_RIGHT_KBD HTCPLD_IRQ(0, 7)
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#define HTCPLD_IRQ_UP_KBD HTCPLD_IRQ(0, 6)
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#define HTCPLD_IRQ_LEFT_KBD HTCPLD_IRQ(0, 5)
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#define HTCPLD_IRQ_DOWN_KBD HTCPLD_IRQ(0, 4)
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#define HTCPLD_IRQ_RIGHT_DPAD HTCPLD_IRQ(1, 7)
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#define HTCPLD_IRQ_UP_DPAD HTCPLD_IRQ(1, 6)
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#define HTCPLD_IRQ_LEFT_DPAD HTCPLD_IRQ(1, 5)
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#define HTCPLD_IRQ_DOWN_DPAD HTCPLD_IRQ(1, 4)
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#define HTCPLD_IRQ_ENTER_DPAD HTCPLD_IRQ(1, 3)
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/* Keyboard definition */
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static const unsigned int htc_herald_keymap[] = {
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KEY(0, 0, KEY_RECORD), /* Mail button */
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KEY(1, 0, KEY_CAMERA), /* Camera */
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KEY(2, 0, KEY_PHONE), /* Send key */
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KEY(3, 0, KEY_VOLUMEUP), /* Volume up */
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KEY(4, 0, KEY_F2), /* Right bar (landscape) */
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KEY(5, 0, KEY_MAIL), /* Win key (portrait) */
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KEY(6, 0, KEY_DIRECTORY), /* Right bar (protrait) */
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KEY(0, 1, KEY_LEFTCTRL), /* Windows key */
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KEY(1, 1, KEY_COMMA),
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KEY(4, 1, KEY_SLASH), /* OK key */
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KEY(0, 2, KEY_LEFTALT),
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KEY(4, 2, KEY_ENTER),
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KEY(0, 3, KEY_SPACE),
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KEY(4, 3, KEY_BACKSPACE),
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KEY(0, 4, KEY_CAPSLOCK), /* Shift */
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KEY(0, 6, KEY_CONNECT), /* Voice button */
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KEY(2, 6, KEY_CANCEL), /* End key */
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KEY(3, 6, KEY_VOLUMEDOWN), /* Volume down */
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KEY(4, 6, KEY_F1), /* Left bar (landscape) */
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KEY(5, 6, KEY_WWW), /* OK button (portrait) */
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KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
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static const struct matrix_keymap_data htc_herald_keymap_data = {
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.keymap = htc_herald_keymap,
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.keymap_size = ARRAY_SIZE(htc_herald_keymap),
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static struct omap_kp_platform_data htcherald_kp_data = {
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.keymap_data = &htc_herald_keymap_data,
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static struct resource kp_resources[] = {
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.start = INT_7XX_MPUIO_KEYPAD,
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.end = INT_7XX_MPUIO_KEYPAD,
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.flags = IORESOURCE_IRQ,
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static struct platform_device kp_device = {
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.name = "omap-keypad",
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.platform_data = &htcherald_kp_data,
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.num_resources = ARRAY_SIZE(kp_resources),
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.resource = kp_resources,
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/* GPIO buttons for keyboard slide and power button */
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static struct gpio_keys_button herald_gpio_keys_table[] = {
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{BTN_0, HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
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{SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW, 1, 20},
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{KEY_LEFT, HTCPLD_GPIO_LEFT_KBD, 1, "LEFT", EV_KEY, 1, 20},
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{KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
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{KEY_UP, HTCPLD_GPIO_UP_KBD, 1, "UP", EV_KEY, 1, 20},
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{KEY_DOWN, HTCPLD_GPIO_DOWN_KBD, 1, "DOWN", EV_KEY, 1, 20},
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{KEY_LEFT, HTCPLD_GPIO_LEFT_DPAD, 1, "DLEFT", EV_KEY, 1, 20},
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{KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD, 1, "DRIGHT", EV_KEY, 1, 20},
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{KEY_UP, HTCPLD_GPIO_UP_DPAD, 1, "DUP", EV_KEY, 1, 20},
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{KEY_DOWN, HTCPLD_GPIO_DOWN_DPAD, 1, "DDOWN", EV_KEY, 1, 20},
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{KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD, 1, "DENTER", EV_KEY, 1, 20},
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static struct gpio_keys_platform_data herald_gpio_keys_data = {
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.buttons = herald_gpio_keys_table,
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.nbuttons = ARRAY_SIZE(herald_gpio_keys_table),
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static struct platform_device herald_gpiokeys_device = {
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.platform_data = &herald_gpio_keys_data,
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/* LEDs for the Herald. These connect to the HTCPLD GPIO device. */
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static struct gpio_led gpio_leds[] = {
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{"dpad", NULL, HTCPLD_GPIO_LED_DPAD, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"kbd", NULL, HTCPLD_GPIO_LED_KBD, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"vibrate", NULL, HTCPLD_GPIO_LED_VIBRATE, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"red_solid", "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"red_flash", NULL, HTCPLD_GPIO_LED_RED_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"wifi", NULL, HTCPLD_GPIO_LED_WIFI, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"bt", NULL, HTCPLD_GPIO_LED_BT, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"caps", NULL, HTCPLD_GPIO_LED_CAPS, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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{"alt", NULL, HTCPLD_GPIO_LED_ALT, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
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static struct gpio_led_platform_data gpio_leds_data = {
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.num_leds = ARRAY_SIZE(gpio_leds),
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static struct platform_device gpio_leds_device = {
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.platform_data = &gpio_leds_data,
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static struct resource htcpld_resources[] = {
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.start = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
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.end = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
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.flags = IORESOURCE_IRQ,
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static struct htcpld_chip_platform_data htcpld_chips[] = {
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.gpio_out_base = HTCPLD_BASE(0, 0),
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.gpio_in_base = HTCPLD_BASE(4, 0),
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.gpio_out_base = HTCPLD_BASE(1, 0),
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.gpio_in_base = HTCPLD_BASE(5, 0),
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.gpio_out_base = HTCPLD_BASE(2, 0),
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.gpio_in_base = HTCPLD_BASE(6, 0),
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.irq_base = HTCPLD_IRQ(0, 0),
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.gpio_out_base = HTCPLD_BASE(3, 0),
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.gpio_in_base = HTCPLD_BASE(7, 0),
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.irq_base = HTCPLD_IRQ(1, 0),
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static struct htcpld_core_platform_data htcpld_pfdata = {
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.int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
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.int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
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.chip = htcpld_chips,
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.num_chip = ARRAY_SIZE(htcpld_chips),
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static struct platform_device htcpld_device = {
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.name = "i2c-htcpld",
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.resource = htcpld_resources,
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.num_resources = ARRAY_SIZE(htcpld_resources),
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.platform_data = &htcpld_pfdata,
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static struct omap_usb_config htcherald_usb_config __initdata = {
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/* LCD Device resources */
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static struct omap_lcd_config htcherald_lcd_config __initdata = {
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.ctrl_name = "internal",
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static struct omap_board_config_kernel htcherald_config[] __initdata = {
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{ OMAP_TAG_LCD, &htcherald_lcd_config },
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static struct platform_device lcd_device = {
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.name = "lcd_htcherald",
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#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
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static struct omap_mmc_platform_data htc_mmc1_data = {
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
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static struct omap_mmc_platform_data *htc_mmc_data[1];
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/* Platform devices for the Herald */
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static struct platform_device *devices[] __initdata = {
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&herald_gpiokeys_device,
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static const struct ads7846_platform_data htcherald_ts_platform_data = {
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.gpio_pendown = HTCHERALD_GPIO_TS,
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.pressure_max = 10000,
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.pressure_min = 5000,
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static struct spi_board_info __initdata htcherald_spi_board_info[] = {
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.modalias = "ads7846",
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.platform_data = &htcherald_ts_platform_data,
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.irq = OMAP_GPIO_IRQ(HTCHERALD_GPIO_TS),
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.max_speed_hz = 2500000,
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* Init functions from here on
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static void __init htcherald_lcd_init(void)
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unsigned int tries = 200;
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/* disable controller if active */
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reg = omap_readl(OMAP_LCDC_CONTROL);
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if (reg & OMAP_LCDC_CTRL_LCD_EN) {
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reg &= ~OMAP_LCDC_CTRL_LCD_EN;
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omap_writel(reg, OMAP_LCDC_CONTROL);
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/* wait for end of frame */
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while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
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printk(KERN_WARNING "Timeout waiting for end of frame "
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"-- LCD may not be available\n");
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reg = omap_readw(OMAP_DMA_LCD_CCR);
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omap_writew(reg, OMAP_DMA_LCD_CCR);
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reg = omap_readw(OMAP_DMA_LCD_CTRL);
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omap_writew(reg, OMAP_DMA_LCD_CTRL);
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static void __init htcherald_map_io(void)
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* The LCD panel must be disabled and DMA turned off here, as doing
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* it later causes the LCD never to reinitialize.
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htcherald_lcd_init();
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printk(KERN_INFO "htcherald_map_io done.\n");
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static void __init htcherald_disable_watchdog(void)
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/* Disable watchdog if running */
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if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
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* disable a potentially running watchdog timer before
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printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
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omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
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omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
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#define HTCHERALD_GPIO_USB_EN1 33
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#define HTCHERALD_GPIO_USB_EN2 73
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#define HTCHERALD_GPIO_USB_DM 35
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#define HTCHERALD_GPIO_USB_DP 36
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static void __init htcherald_usb_enable(void)
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unsigned int tries = 20;
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unsigned int value = 0;
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/* Request the GPIOs we need to control here */
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if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
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if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
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if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
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if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
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/* force USB_EN GPIO to 0 */
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gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
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} while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
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printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
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gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
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gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
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gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
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gpio_free(HTCHERALD_GPIO_USB_DM);
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gpio_free(HTCHERALD_GPIO_USB_EN2);
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gpio_free(HTCHERALD_GPIO_USB_EN1);
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printk(KERN_ERR "Unabled to request GPIO for USB\n");
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printk(KERN_INFO "USB setup complete.\n");
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static void __init htcherald_init(void)
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printk(KERN_INFO "HTC Herald init.\n");
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/* Do board initialization before we register all the devices */
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omap_board_config = htcherald_config;
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omap_board_config_size = ARRAY_SIZE(htcherald_config);
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platform_add_devices(devices, ARRAY_SIZE(devices));
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htcherald_disable_watchdog();
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htcherald_usb_enable();
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omap1_usb_init(&htcherald_usb_config);
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spi_register_board_info(htcherald_spi_board_info,
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ARRAY_SIZE(htcherald_spi_board_info));
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omap_register_i2c_bus(1, 100, NULL, 0);
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#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
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htc_mmc_data[0] = &htc_mmc1_data;
599
omap1_init_mmc(htc_mmc_data, 1);
603
MACHINE_START(HERALD, "HTC Herald")
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/* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
605
/* Maintainer: wing-linux.sourceforge.net */
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.atag_offset = 0x100,
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.map_io = htcherald_map_io,
608
.init_early = omap1_init_early,
609
.reserve = omap_reserve,
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.init_irq = omap1_init_irq,
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.init_machine = htcherald_init,
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.timer = &omap1_timer,