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

   1 /*
   2  * HTC Herald board configuration
   3  * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
   4  * Copyright (C) 2009 Wing Linux
   5  *
   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
   9  *
  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.
  14  *
  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.
  19  *
  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
  23  * 02110-1301, USA.
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/init.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/input.h>
  31 #include <linux/io.h>
  32 #include <linux/gpio.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36
  37 #include <plat/omap7xx.h>
  38 #include <plat/common.h>
  39 #include <plat/board.h>
  40 #include <plat/keypad.h>
  41 #include <plat/usb.h>
  42
  43 #include <mach/irqs.h>
  44
  45 #include <linux/delay.h>
  46
  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)
  54
  55 static struct omap_lcd_config htcherald_lcd_config __initdata = {
  56         .ctrl_name      = "internal",
  57 };
  58
  59 static struct omap_board_config_kernel htcherald_config[] __initdata = {
  60         { OMAP_TAG_LCD, &htcherald_lcd_config },
  61 };
  62
  63 /* Keyboard definition */
  64
  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 */
  74         KEY(1, 1, KEY_COMMA),
  75         KEY(1, 2, KEY_M),
  76         KEY(1, 3, KEY_K),
  77         KEY(1, 4, KEY_SLASH), /* OK key */
  78         KEY(1, 5, KEY_I),
  79         KEY(1, 6, KEY_U),
  80         KEY(2, 0, KEY_LEFTALT),
  81         KEY(2, 1, KEY_TAB),
  82         KEY(2, 2, KEY_N),
  83         KEY(2, 3, KEY_J),
  84         KEY(2, 4, KEY_ENTER),
  85         KEY(2, 5, KEY_H),
  86         KEY(2, 6, KEY_Y),
  87         KEY(3, 0, KEY_SPACE),
  88         KEY(3, 1, KEY_L),
  89         KEY(3, 2, KEY_B),
  90         KEY(3, 3, KEY_V),
  91         KEY(3, 4, KEY_BACKSPACE),
  92         KEY(3, 5, KEY_G),
  93         KEY(3, 6, KEY_T),
  94         KEY(4, 0, KEY_CAPSLOCK), /* Shift */
  95         KEY(4, 1, KEY_C),
  96         KEY(4, 2, KEY_F),
  97         KEY(4, 3, KEY_R),
  98         KEY(4, 4, KEY_O),
  99         KEY(4, 5, KEY_E),
 100         KEY(4, 6, KEY_D),
 101         KEY(5, 0, KEY_X),
 102         KEY(5, 1, KEY_Z),
 103         KEY(5, 2, KEY_S),
 104         KEY(5, 3, KEY_W),
 105         KEY(5, 4, KEY_P),
 106         KEY(5, 5, KEY_Q),
 107         KEY(5, 6, KEY_A),
 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) */
 114         0
 115 };
 116
 117 struct omap_kp_platform_data htcherald_kp_data = {
 118         .rows   = 7,
 119         .cols   = 7,
 120         .delay = 20,
 121         .rep = 1,
 122         .keymap = htc_herald_keymap,
 123 };
 124
 125 static struct resource kp_resources[] = {
 126         [0] = {
 127                 .start  = INT_7XX_MPUIO_KEYPAD,
 128                 .end    = INT_7XX_MPUIO_KEYPAD,
 129                 .flags  = IORESOURCE_IRQ,
 130         },
 131 };
 132
 133 static struct platform_device kp_device = {
 134         .name           = "omap-keypad",
 135         .id             = -1,
 136         .dev            = {
 137                 .platform_data = &htcherald_kp_data,
 138         },
 139         .num_resources  = ARRAY_SIZE(kp_resources),
 140         .resource       = kp_resources,
 141 };
 142
 143 /* USB Device */
 144 static struct omap_usb_config htcherald_usb_config __initdata = {
 145         .otg = 0,
 146         .register_host = 0,
 147         .register_dev  = 1,
 148         .hmc_mode = 4,
 149         .pins[0] = 2,
 150 };
 151
 152 /* LCD Device resources */
 153 static struct platform_device lcd_device = {
 154         .name           = "lcd_htcherald",
 155         .id             = -1,
 156 };
 157
 158 static struct platform_device *devices[] __initdata = {
 159         &kp_device,
 160         &lcd_device,
 161 };
 162
 163 /*
 164  * Init functions from here on
 165  */
 166
 167 static void __init htcherald_lcd_init(void)
 168 {
 169         u32 reg;
 170         unsigned int tries = 200;
 171
 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);
 177
 178                 /* wait for end of frame */
 179                 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
 180                         tries--;
 181                         if (!tries)
 182                                 break;
 183                 }
 184                 if (!tries)
 185                         printk(KERN_WARNING "Timeout waiting for end of frame "
 186                                "-- LCD may not be available\n");
 187
 188                 /* turn off DMA */
 189                 reg = omap_readw(OMAP_DMA_LCD_CCR);
 190                 reg &= ~(1 << 7);
 191                 omap_writew(reg, OMAP_DMA_LCD_CCR);
 192
 193                 reg = omap_readw(OMAP_DMA_LCD_CTRL);
 194                 reg &= ~(1 << 8);
 195                 omap_writew(reg, OMAP_DMA_LCD_CTRL);
 196         }
 197 }
 198
 199 static void __init htcherald_map_io(void)
 200 {
 201         omap1_map_common_io();
 202
 203         /*
 204          * The LCD panel must be disabled and DMA turned off here, as doing
 205          * it later causes the LCD never to reinitialize.
 206          */
 207         htcherald_lcd_init();
 208
 209         printk(KERN_INFO "htcherald_map_io done.\n");
 210 }
 211
 212 static void __init htcherald_disable_watchdog(void)
 213 {
 214         /* Disable watchdog if running */
 215         if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
 216                 /*
 217                  * disable a potentially running watchdog timer before
 218                  * it kills us.
 219                  */
 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);
 223         }
 224 }
 225
 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
 230
 231 static void __init htcherald_usb_enable(void)
 232 {
 233         unsigned int tries = 20;
 234         unsigned int value = 0;
 235
 236         /* Request the GPIOs we need to control here */
 237         if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
 238                 goto err1;
 239
 240         if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
 241                 goto err2;
 242
 243         if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
 244                 goto err3;
 245
 246         if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
 247                 goto err4;
 248
 249         /* force USB_EN GPIO to 0 */
 250         do {
 251                 /* output low */
 252                 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
 253         } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
 254                         --tries);
 255
 256         if (value == 1)
 257                 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
 258
 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 */
 262
 263         goto done;
 264
 265 err4:
 266         gpio_free(HTCHERALD_GPIO_USB_DM);
 267 err3:
 268         gpio_free(HTCHERALD_GPIO_USB_EN2);
 269 err2:
 270         gpio_free(HTCHERALD_GPIO_USB_EN1);
 271 err1:
 272         printk(KERN_ERR "Unabled to request GPIO for USB\n");
 273 done:
 274         printk(KERN_INFO "USB setup complete.\n");
 275 }
 276
 277 static void __init htcherald_init(void)
 278 {
 279         printk(KERN_INFO "HTC Herald init.\n");
 280
 281         omap_gpio_init();
 282
 283         omap_board_config = htcherald_config;
 284         omap_board_config_size = ARRAY_SIZE(htcherald_config);
 285         platform_add_devices(devices, ARRAY_SIZE(devices));
 286
 287         htcherald_disable_watchdog();
 288
 289         htcherald_usb_enable();
 290         omap_usb_init(&htcherald_usb_config);
 291 }
 292
 293 static void __init htcherald_init_irq(void)
 294 {
 295         printk(KERN_INFO "htcherald_init_irq.\n");
 296         omap1_init_common_hw();
 297         omap_init_irq();
 298 }
 299
 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         .init_irq       = htcherald_init_irq,
 308         .init_machine   = htcherald_init,
 309         .timer          = &omap_timer,
 310 MACHINE_END