2 * HTC Herald board configuration
3 * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
4 * Copyright (C) 2009 Wing Linux
6 * Based on the board-htcwizard.c file from the linwizard project:
7 * Copyright (C) 2006 Unai Uribarri
8 * Copyright (C) 2008 linwizard.sourceforge.net
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of the
13 * License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
27 #include <linux/kernel.h>
28 #include <linux/init.h>
29 #include <linux/platform_device.h>
30 #include <linux/input.h>
32 #include <linux/gpio.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
37 #include <plat/omap7xx.h>
38 #include <plat/common.h>
39 #include <plat/board.h>
40 #include <plat/keypad.h>
43 #include <mach/irqs.h>
45 #include <linux/delay.h>
47 /* LCD register definition */
48 #define OMAP_LCDC_CONTROL (0xfffec000 + 0x00)
49 #define OMAP_LCDC_STATUS (0xfffec000 + 0x10)
50 #define OMAP_DMA_LCD_CCR (0xfffee300 + 0xc2)
51 #define OMAP_DMA_LCD_CTRL (0xfffee300 + 0xc4)
52 #define OMAP_LCDC_CTRL_LCD_EN (1 << 0)
53 #define OMAP_LCDC_STAT_DONE (1 << 0)
55 static struct omap_lcd_config htcherald_lcd_config __initdata = {
56 .ctrl_name = "internal",
59 static struct omap_board_config_kernel htcherald_config[] __initdata = {
60 { OMAP_TAG_LCD, &htcherald_lcd_config },
63 /* Keyboard definition */
65 static int htc_herald_keymap[] = {
66 KEY(0, 0, KEY_RECORD), /* Mail button */
67 KEY(0, 1, KEY_CAMERA), /* Camera */
68 KEY(0, 2, KEY_PHONE), /* Send key */
69 KEY(0, 3, KEY_VOLUMEUP), /* Volume up */
70 KEY(0, 4, KEY_F2), /* Right bar (landscape) */
71 KEY(0, 5, KEY_MAIL), /* Win key (portrait) */
72 KEY(0, 6, KEY_DIRECTORY), /* Right bar (protrait) */
73 KEY(1, 0, KEY_LEFTCTRL), /* Windows key */
77 KEY(1, 4, KEY_SLASH), /* OK key */
80 KEY(2, 0, KEY_LEFTALT),
91 KEY(3, 4, KEY_BACKSPACE),
94 KEY(4, 0, KEY_CAPSLOCK), /* Shift */
108 KEY(6, 0, KEY_CONNECT), /* Voice button */
109 KEY(6, 2, KEY_CANCEL), /* End key */
110 KEY(6, 3, KEY_VOLUMEDOWN), /* Volume down */
111 KEY(6, 4, KEY_F1), /* Left bar (landscape) */
112 KEY(6, 5, KEY_WWW), /* OK button (portrait) */
113 KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
117 struct omap_kp_platform_data htcherald_kp_data = {
122 .keymap = htc_herald_keymap,
125 static struct resource kp_resources[] = {
127 .start = INT_7XX_MPUIO_KEYPAD,
128 .end = INT_7XX_MPUIO_KEYPAD,
129 .flags = IORESOURCE_IRQ,
133 static struct platform_device kp_device = {
134 .name = "omap-keypad",
137 .platform_data = &htcherald_kp_data,
139 .num_resources = ARRAY_SIZE(kp_resources),
140 .resource = kp_resources,
144 static struct omap_usb_config htcherald_usb_config __initdata = {
152 /* LCD Device resources */
153 static struct platform_device lcd_device = {
154 .name = "lcd_htcherald",
158 static struct platform_device *devices[] __initdata = {
164 * Init functions from here on
167 static void __init htcherald_lcd_init(void)
170 unsigned int tries = 200;
172 /* disable controller if active */
173 reg = omap_readl(OMAP_LCDC_CONTROL);
174 if (reg & OMAP_LCDC_CTRL_LCD_EN) {
175 reg &= ~OMAP_LCDC_CTRL_LCD_EN;
176 omap_writel(reg, OMAP_LCDC_CONTROL);
178 /* wait for end of frame */
179 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
185 printk(KERN_WARNING "Timeout waiting for end of frame "
186 "-- LCD may not be available\n");
189 reg = omap_readw(OMAP_DMA_LCD_CCR);
191 omap_writew(reg, OMAP_DMA_LCD_CCR);
193 reg = omap_readw(OMAP_DMA_LCD_CTRL);
195 omap_writew(reg, OMAP_DMA_LCD_CTRL);
199 static void __init htcherald_map_io(void)
201 omap1_map_common_io();
204 * The LCD panel must be disabled and DMA turned off here, as doing
205 * it later causes the LCD never to reinitialize.
207 htcherald_lcd_init();
209 printk(KERN_INFO "htcherald_map_io done.\n");
212 static void __init htcherald_disable_watchdog(void)
214 /* Disable watchdog if running */
215 if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
217 * disable a potentially running watchdog timer before
220 printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
221 omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
222 omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
226 #define HTCHERALD_GPIO_USB_EN1 33
227 #define HTCHERALD_GPIO_USB_EN2 73
228 #define HTCHERALD_GPIO_USB_DM 35
229 #define HTCHERALD_GPIO_USB_DP 36
231 static void __init htcherald_usb_enable(void)
233 unsigned int tries = 20;
234 unsigned int value = 0;
236 /* Request the GPIOs we need to control here */
237 if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
240 if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
243 if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
246 if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
249 /* force USB_EN GPIO to 0 */
252 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
253 } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
257 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
259 gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
260 gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
261 gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
266 gpio_free(HTCHERALD_GPIO_USB_DM);
268 gpio_free(HTCHERALD_GPIO_USB_EN2);
270 gpio_free(HTCHERALD_GPIO_USB_EN1);
272 printk(KERN_ERR "Unabled to request GPIO for USB\n");
274 printk(KERN_INFO "USB setup complete.\n");
277 static void __init htcherald_init(void)
279 printk(KERN_INFO "HTC Herald init.\n");
283 omap_board_config = htcherald_config;
284 omap_board_config_size = ARRAY_SIZE(htcherald_config);
285 platform_add_devices(devices, ARRAY_SIZE(devices));
287 htcherald_disable_watchdog();
289 htcherald_usb_enable();
290 omap_usb_init(&htcherald_usb_config);
293 static void __init htcherald_init_irq(void)
295 printk(KERN_INFO "htcherald_init_irq.\n");
296 omap1_init_common_hw();
300 MACHINE_START(HERALD, "HTC Herald")
301 /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
302 /* Maintainer: wing-linux.sourceforge.net */
303 .phys_io = 0xfff00000,
304 .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
305 .boot_params = 0x10000100,
306 .map_io = htcherald_map_io,
307 .reserve = omap_reserve,
308 .init_irq = htcherald_init_irq,
309 .init_machine = htcherald_init,
310 .timer = &omap_timer,