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106997c1a4
This change implements USB client side support into the HTC Herald board configuration. It uses a similar, but updated algorithm to initialize the USB as is used in the linwizard project. Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
312 lines
7.8 KiB
C
312 lines
7.8 KiB
C
/*
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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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*
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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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*
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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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*
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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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*
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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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* 02110-1301, USA.
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*
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*/
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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/bootmem.h>
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#include <linux/io.h>
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#include <linux/gpio.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 <plat/usb.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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static struct omap_lcd_config htcherald_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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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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};
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/* Keyboard definition */
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static int htc_herald_keymap[] = {
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KEY(0, 0, KEY_RECORD), /* Mail button */
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KEY(0, 1, KEY_CAMERA), /* Camera */
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KEY(0, 2, KEY_PHONE), /* Send key */
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KEY(0, 3, KEY_VOLUMEUP), /* Volume up */
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KEY(0, 4, KEY_F2), /* Right bar (landscape) */
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KEY(0, 5, KEY_MAIL), /* Win key (portrait) */
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KEY(0, 6, KEY_DIRECTORY), /* Right bar (protrait) */
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KEY(1, 0, KEY_LEFTCTRL), /* Windows key */
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KEY(1, 1, KEY_COMMA),
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KEY(1, 2, KEY_M),
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KEY(1, 3, KEY_K),
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KEY(1, 4, KEY_SLASH), /* OK key */
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KEY(1, 5, KEY_I),
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KEY(1, 6, KEY_U),
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KEY(2, 0, KEY_LEFTALT),
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KEY(2, 1, KEY_TAB),
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KEY(2, 2, KEY_N),
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KEY(2, 3, KEY_J),
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KEY(2, 4, KEY_ENTER),
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KEY(2, 5, KEY_H),
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KEY(2, 6, KEY_Y),
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KEY(3, 0, KEY_SPACE),
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KEY(3, 1, KEY_L),
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KEY(3, 2, KEY_B),
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KEY(3, 3, KEY_V),
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KEY(3, 4, KEY_BACKSPACE),
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KEY(3, 5, KEY_G),
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KEY(3, 6, KEY_T),
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KEY(4, 0, KEY_CAPSLOCK), /* Shift */
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KEY(4, 1, KEY_C),
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KEY(4, 2, KEY_F),
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KEY(4, 3, KEY_R),
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KEY(4, 4, KEY_O),
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KEY(4, 5, KEY_E),
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KEY(4, 6, KEY_D),
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KEY(5, 0, KEY_X),
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KEY(5, 1, KEY_Z),
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KEY(5, 2, KEY_S),
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KEY(5, 3, KEY_W),
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KEY(5, 4, KEY_P),
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KEY(5, 5, KEY_Q),
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KEY(5, 6, KEY_A),
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KEY(6, 0, KEY_CONNECT), /* Voice button */
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KEY(6, 2, KEY_CANCEL), /* End key */
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KEY(6, 3, KEY_VOLUMEDOWN), /* Volume down */
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KEY(6, 4, KEY_F1), /* Left bar (landscape) */
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KEY(6, 5, KEY_WWW), /* OK button (portrait) */
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KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
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0
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};
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struct omap_kp_platform_data htcherald_kp_data = {
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.rows = 7,
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.cols = 7,
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.delay = 20,
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.rep = 1,
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.keymap = htc_herald_keymap,
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};
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static struct resource kp_resources[] = {
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[0] = {
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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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},
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};
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static struct platform_device kp_device = {
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.name = "omap-keypad",
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.id = -1,
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.dev = {
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.platform_data = &htcherald_kp_data,
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},
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.num_resources = ARRAY_SIZE(kp_resources),
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.resource = kp_resources,
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};
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/* USB Device */
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static struct omap_usb_config htcherald_usb_config __initdata = {
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.otg = 0,
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.register_host = 0,
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.register_dev = 1,
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.hmc_mode = 4,
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.pins[0] = 2,
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};
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/* LCD Device resources */
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static struct platform_device lcd_device = {
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.name = "lcd_htcherald",
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.id = -1,
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};
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static struct platform_device *devices[] __initdata = {
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&kp_device,
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&lcd_device,
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};
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/*
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* Init functions from here on
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*/
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static void __init htcherald_lcd_init(void)
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{
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u32 reg;
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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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tries--;
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if (!tries)
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break;
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}
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if (!tries)
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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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/* turn off DMA */
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reg = omap_readw(OMAP_DMA_LCD_CCR);
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reg &= ~(1 << 7);
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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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reg &= ~(1 << 8);
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omap_writew(reg, OMAP_DMA_LCD_CTRL);
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}
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}
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static void __init htcherald_map_io(void)
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{
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omap1_map_common_io();
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/*
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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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*/
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htcherald_lcd_init();
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printk(KERN_INFO "htcherald_map_io done.\n");
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}
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static void __init htcherald_disable_watchdog(void)
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{
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/* Disable watchdog if running */
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if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
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/*
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* disable a potentially running watchdog timer before
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* it kills us.
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*/
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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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}
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}
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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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{
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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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goto err1;
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if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
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goto err2;
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if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
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goto err3;
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if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
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goto err4;
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/* force USB_EN GPIO to 0 */
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do {
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/* output low */
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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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--tries);
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if (value == 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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goto done;
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err4:
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gpio_free(HTCHERALD_GPIO_USB_DM);
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err3:
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gpio_free(HTCHERALD_GPIO_USB_EN2);
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err2:
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gpio_free(HTCHERALD_GPIO_USB_EN1);
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err1:
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printk(KERN_ERR "Unabled to request GPIO for USB\n");
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done:
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printk(KERN_INFO "USB setup complete.\n");
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}
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static void __init htcherald_init(void)
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{
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printk(KERN_INFO "HTC Herald init.\n");
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omap_gpio_init();
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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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omap_usb_init(&htcherald_usb_config);
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}
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static void __init htcherald_init_irq(void)
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{
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printk(KERN_INFO "htcherald_init_irq.\n");
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omap1_init_common_hw();
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omap_init_irq();
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}
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MACHINE_START(HERALD, "HTC Herald")
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/* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
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/* Maintainer: wing-linux.sourceforge.net */
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.phys_io = 0xfff00000,
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.io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
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.boot_params = 0x10000100,
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.map_io = htcherald_map_io,
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.init_irq = htcherald_init_irq,
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.init_machine = htcherald_init,
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.timer = &omap_timer,
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MACHINE_END
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