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linux/arch/arm/mach-omap1/board-htcherald.c

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/*
* HTC Herald board configuration
* Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
* Copyright (C) 2009 Wing Linux
*
* Based on the board-htcwizard.c file from the linwizard project:
* Copyright (C) 2006 Unai Uribarri
* Copyright (C) 2008 linwizard.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <plat/omap7xx.h>
#include <plat/common.h>
#include <plat/board.h>
#include <plat/keypad.h>
#include <plat/usb.h>
#include <mach/irqs.h>
#include <linux/delay.h>
/* LCD register definition */
#define OMAP_LCDC_CONTROL (0xfffec000 + 0x00)
#define OMAP_LCDC_STATUS (0xfffec000 + 0x10)
#define OMAP_DMA_LCD_CCR (0xfffee300 + 0xc2)
#define OMAP_DMA_LCD_CTRL (0xfffee300 + 0xc4)
#define OMAP_LCDC_CTRL_LCD_EN (1 << 0)
#define OMAP_LCDC_STAT_DONE (1 << 0)
static struct omap_lcd_config htcherald_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel htcherald_config[] __initdata = {
{ OMAP_TAG_LCD, &htcherald_lcd_config },
};
/* Keyboard definition */
static int htc_herald_keymap[] = {
KEY(0, 0, KEY_RECORD), /* Mail button */
KEY(0, 1, KEY_CAMERA), /* Camera */
KEY(0, 2, KEY_PHONE), /* Send key */
KEY(0, 3, KEY_VOLUMEUP), /* Volume up */
KEY(0, 4, KEY_F2), /* Right bar (landscape) */
KEY(0, 5, KEY_MAIL), /* Win key (portrait) */
KEY(0, 6, KEY_DIRECTORY), /* Right bar (protrait) */
KEY(1, 0, KEY_LEFTCTRL), /* Windows key */
KEY(1, 1, KEY_COMMA),
KEY(1, 2, KEY_M),
KEY(1, 3, KEY_K),
KEY(1, 4, KEY_SLASH), /* OK key */
KEY(1, 5, KEY_I),
KEY(1, 6, KEY_U),
KEY(2, 0, KEY_LEFTALT),
KEY(2, 1, KEY_TAB),
KEY(2, 2, KEY_N),
KEY(2, 3, KEY_J),
KEY(2, 4, KEY_ENTER),
KEY(2, 5, KEY_H),
KEY(2, 6, KEY_Y),
KEY(3, 0, KEY_SPACE),
KEY(3, 1, KEY_L),
KEY(3, 2, KEY_B),
KEY(3, 3, KEY_V),
KEY(3, 4, KEY_BACKSPACE),
KEY(3, 5, KEY_G),
KEY(3, 6, KEY_T),
KEY(4, 0, KEY_CAPSLOCK), /* Shift */
KEY(4, 1, KEY_C),
KEY(4, 2, KEY_F),
KEY(4, 3, KEY_R),
KEY(4, 4, KEY_O),
KEY(4, 5, KEY_E),
KEY(4, 6, KEY_D),
KEY(5, 0, KEY_X),
KEY(5, 1, KEY_Z),
KEY(5, 2, KEY_S),
KEY(5, 3, KEY_W),
KEY(5, 4, KEY_P),
KEY(5, 5, KEY_Q),
KEY(5, 6, KEY_A),
KEY(6, 0, KEY_CONNECT), /* Voice button */
KEY(6, 2, KEY_CANCEL), /* End key */
KEY(6, 3, KEY_VOLUMEDOWN), /* Volume down */
KEY(6, 4, KEY_F1), /* Left bar (landscape) */
KEY(6, 5, KEY_WWW), /* OK button (portrait) */
KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
0
};
struct omap_kp_platform_data htcherald_kp_data = {
.rows = 7,
.cols = 7,
.delay = 20,
.rep = 1,
.keymap = htc_herald_keymap,
};
static struct resource kp_resources[] = {
[0] = {
.start = INT_7XX_MPUIO_KEYPAD,
.end = INT_7XX_MPUIO_KEYPAD,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device kp_device = {
.name = "omap-keypad",
.id = -1,
.dev = {
.platform_data = &htcherald_kp_data,
},
.num_resources = ARRAY_SIZE(kp_resources),
.resource = kp_resources,
};
/* USB Device */
static struct omap_usb_config htcherald_usb_config __initdata = {
.otg = 0,
.register_host = 0,
.register_dev = 1,
.hmc_mode = 4,
.pins[0] = 2,
};
/* LCD Device resources */
static struct platform_device lcd_device = {
.name = "lcd_htcherald",
.id = -1,
};
static struct platform_device *devices[] __initdata = {
&kp_device,
&lcd_device,
};
/*
* Init functions from here on
*/
static void __init htcherald_lcd_init(void)
{
u32 reg;
unsigned int tries = 200;
/* disable controller if active */
reg = omap_readl(OMAP_LCDC_CONTROL);
if (reg & OMAP_LCDC_CTRL_LCD_EN) {
reg &= ~OMAP_LCDC_CTRL_LCD_EN;
omap_writel(reg, OMAP_LCDC_CONTROL);
/* wait for end of frame */
while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
tries--;
if (!tries)
break;
}
if (!tries)
printk(KERN_WARNING "Timeout waiting for end of frame "
"-- LCD may not be available\n");
/* turn off DMA */
reg = omap_readw(OMAP_DMA_LCD_CCR);
reg &= ~(1 << 7);
omap_writew(reg, OMAP_DMA_LCD_CCR);
reg = omap_readw(OMAP_DMA_LCD_CTRL);
reg &= ~(1 << 8);
omap_writew(reg, OMAP_DMA_LCD_CTRL);
}
}
static void __init htcherald_map_io(void)
{
omap1_map_common_io();
/*
* The LCD panel must be disabled and DMA turned off here, as doing
* it later causes the LCD never to reinitialize.
*/
htcherald_lcd_init();
printk(KERN_INFO "htcherald_map_io done.\n");
}
static void __init htcherald_disable_watchdog(void)
{
/* Disable watchdog if running */
if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
/*
* disable a potentially running watchdog timer before
* it kills us.
*/
printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
}
}
#define HTCHERALD_GPIO_USB_EN1 33
#define HTCHERALD_GPIO_USB_EN2 73
#define HTCHERALD_GPIO_USB_DM 35
#define HTCHERALD_GPIO_USB_DP 36
static void __init htcherald_usb_enable(void)
{
unsigned int tries = 20;
unsigned int value = 0;
/* Request the GPIOs we need to control here */
if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
goto err1;
if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
goto err2;
if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
goto err3;
if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
goto err4;
/* force USB_EN GPIO to 0 */
do {
/* output low */
gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
} while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
--tries);
if (value == 1)
printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
goto done;
err4:
gpio_free(HTCHERALD_GPIO_USB_DM);
err3:
gpio_free(HTCHERALD_GPIO_USB_EN2);
err2:
gpio_free(HTCHERALD_GPIO_USB_EN1);
err1:
printk(KERN_ERR "Unabled to request GPIO for USB\n");
done:
printk(KERN_INFO "USB setup complete.\n");
}
static void __init htcherald_init(void)
{
printk(KERN_INFO "HTC Herald init.\n");
omap_gpio_init();
omap_board_config = htcherald_config;
omap_board_config_size = ARRAY_SIZE(htcherald_config);
platform_add_devices(devices, ARRAY_SIZE(devices));
htcherald_disable_watchdog();
htcherald_usb_enable();
omap1_usb_init(&htcherald_usb_config);
}
static void __init htcherald_init_irq(void)
{
printk(KERN_INFO "htcherald_init_irq.\n");
omap1_init_common_hw();
omap_init_irq();
}
MACHINE_START(HERALD, "HTC Herald")
/* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
/* Maintainer: wing-linux.sourceforge.net */
.phys_io = 0xfff00000,
.io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
.boot_params = 0x10000100,
.map_io = htcherald_map_io,
.reserve = omap_reserve,
.init_irq = htcherald_init_irq,
.init_machine = htcherald_init,
.timer = &omap_timer,
MACHINE_END
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