linux/arch/arm/mach-omap1/board-palmz71.c
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   1/*
   2 * linux/arch/arm/mach-omap1/board-palmz71.c
   3 *
   4 * Modified from board-generic.c
   5 *
   6 * Support for the Palm Zire71 PDA.
   7 *
   8 * Original version : Laurent Gonzalez
   9 *
  10 * Modified for zire71 : Marek Vasut
  11 *
  12 * This program is free software; you can redistribute it and/or modify
  13 * it under the terms of the GNU General Public License version 2 as
  14 * published by the Free Software Foundation.
  15 */
  16
  17#include <linux/delay.h>
  18#include <linux/gpio.h>
  19#include <linux/kernel.h>
  20#include <linux/init.h>
  21#include <linux/platform_device.h>
  22#include <linux/notifier.h>
  23#include <linux/clk.h>
  24#include <linux/irq.h>
  25#include <linux/input.h>
  26#include <linux/interrupt.h>
  27#include <linux/mtd/mtd.h>
  28#include <linux/mtd/partitions.h>
  29#include <linux/mtd/physmap.h>
  30#include <linux/omapfb.h>
  31#include <linux/spi/spi.h>
  32#include <linux/spi/ads7846.h>
  33#include <linux/platform_data/omap1_bl.h>
  34
  35#include <asm/mach-types.h>
  36#include <asm/mach/arch.h>
  37#include <asm/mach/map.h>
  38
  39#include <mach/flash.h>
  40#include <mach/mux.h>
  41#include <linux/omap-dma.h>
  42#include <mach/tc.h>
  43#include <linux/platform_data/keypad-omap.h>
  44
  45#include <mach/hardware.h>
  46#include <mach/usb.h>
  47
  48#include "common.h"
  49
  50#define PALMZ71_USBDETECT_GPIO  0
  51#define PALMZ71_PENIRQ_GPIO     6
  52#define PALMZ71_MMC_WP_GPIO     8
  53#define PALMZ71_HDQ_GPIO        11
  54
  55#define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
  56#define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
  57#define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
  58#define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
  59
  60static const unsigned int palmz71_keymap[] = {
  61        KEY(0, 0, KEY_F1),
  62        KEY(1, 0, KEY_F2),
  63        KEY(2, 0, KEY_F3),
  64        KEY(3, 0, KEY_F4),
  65        KEY(4, 0, KEY_POWER),
  66        KEY(0, 1, KEY_LEFT),
  67        KEY(1, 1, KEY_DOWN),
  68        KEY(2, 1, KEY_UP),
  69        KEY(3, 1, KEY_RIGHT),
  70        KEY(4, 1, KEY_ENTER),
  71        KEY(0, 2, KEY_CAMERA),
  72};
  73
  74static const struct matrix_keymap_data palmz71_keymap_data = {
  75        .keymap         = palmz71_keymap,
  76        .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  77};
  78
  79static struct omap_kp_platform_data palmz71_kp_data = {
  80        .rows   = 8,
  81        .cols   = 8,
  82        .keymap_data    = &palmz71_keymap_data,
  83        .rep    = true,
  84        .delay  = 80,
  85};
  86
  87static struct resource palmz71_kp_resources[] = {
  88        [0] = {
  89                .start  = INT_KEYBOARD,
  90                .end    = INT_KEYBOARD,
  91                .flags  = IORESOURCE_IRQ,
  92        },
  93};
  94
  95static struct platform_device palmz71_kp_device = {
  96        .name   = "omap-keypad",
  97        .id     = -1,
  98        .dev    = {
  99                .platform_data = &palmz71_kp_data,
 100        },
 101        .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 102        .resource       = palmz71_kp_resources,
 103};
 104
 105static struct mtd_partition palmz71_rom_partitions[] = {
 106        /* PalmOS "Small ROM", contains the bootloader and the debugger */
 107        {
 108                .name           = "smallrom",
 109                .offset         = 0,
 110                .size           = 0xa000,
 111                .mask_flags     = MTD_WRITEABLE,
 112        },
 113        /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 114        {
 115                .name   = "bigrom",
 116                .offset = SZ_128K,
 117                /*
 118                 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 119                 * 0x7b0000 bytes in the English-only ("enUS") version.
 120                 */
 121                .size           = 0x7b0000,
 122                .mask_flags     = MTD_WRITEABLE,
 123        },
 124};
 125
 126static struct physmap_flash_data palmz71_rom_data = {
 127        .width          = 2,
 128        .set_vpp        = omap1_set_vpp,
 129        .parts          = palmz71_rom_partitions,
 130        .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 131};
 132
 133static struct resource palmz71_rom_resource = {
 134        .start  = OMAP_CS0_PHYS,
 135        .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 136        .flags  = IORESOURCE_MEM,
 137};
 138
 139static struct platform_device palmz71_rom_device = {
 140        .name   = "physmap-flash",
 141        .id     = -1,
 142        .dev = {
 143                .platform_data = &palmz71_rom_data,
 144        },
 145        .num_resources  = 1,
 146        .resource       = &palmz71_rom_resource,
 147};
 148
 149static struct platform_device palmz71_lcd_device = {
 150        .name   = "lcd_palmz71",
 151        .id     = -1,
 152};
 153
 154static struct platform_device palmz71_spi_device = {
 155        .name   = "spi_palmz71",
 156        .id     = -1,
 157};
 158
 159static struct omap_backlight_config palmz71_backlight_config = {
 160        .default_intensity      = 0xa0,
 161};
 162
 163static struct platform_device palmz71_backlight_device = {
 164        .name   = "omap-bl",
 165        .id     = -1,
 166        .dev    = {
 167                .platform_data = &palmz71_backlight_config,
 168        },
 169};
 170
 171static struct platform_device *devices[] __initdata = {
 172        &palmz71_rom_device,
 173        &palmz71_kp_device,
 174        &palmz71_lcd_device,
 175        &palmz71_spi_device,
 176        &palmz71_backlight_device,
 177};
 178
 179static int
 180palmz71_get_pendown_state(void)
 181{
 182        return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 183}
 184
 185static const struct ads7846_platform_data palmz71_ts_info = {
 186        .model                  = 7846,
 187        .vref_delay_usecs       = 100,  /* internal, no capacitor */
 188        .x_plate_ohms           = 419,
 189        .y_plate_ohms           = 486,
 190        .get_pendown_state      = palmz71_get_pendown_state,
 191};
 192
 193static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 194        /* MicroWire (bus 2) CS0 has an ads7846e */
 195        .modalias       = "ads7846",
 196        .platform_data  = &palmz71_ts_info,
 197        .max_speed_hz   = 120000        /* max sample rate at 3V */
 198                                * 26    /* command + data + overhead */,
 199        .bus_num        = 2,
 200        .chip_select    = 0,
 201} };
 202
 203static struct omap_usb_config palmz71_usb_config __initdata = {
 204        .register_dev   = 1,    /* Mini-B only receptacle */
 205        .hmc_mode       = 0,
 206        .pins[0]        = 2,
 207};
 208
 209static struct omap_lcd_config palmz71_lcd_config __initdata = {
 210        .ctrl_name = "internal",
 211};
 212
 213static irqreturn_t
 214palmz71_powercable(int irq, void *dev_id)
 215{
 216        if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 217                printk(KERN_INFO "PM: Power cable connected\n");
 218                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 219                                 IRQ_TYPE_EDGE_FALLING);
 220        } else {
 221                printk(KERN_INFO "PM: Power cable disconnected\n");
 222                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 223                                 IRQ_TYPE_EDGE_RISING);
 224        }
 225        return IRQ_HANDLED;
 226}
 227
 228static void __init
 229omap_mpu_wdt_mode(int mode)
 230{
 231        if (mode)
 232                omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 233        else {
 234                omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 235                omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 236        }
 237}
 238
 239static void __init
 240palmz71_gpio_setup(int early)
 241{
 242        if (early) {
 243                /* Only set GPIO1 so we have a working serial */
 244                gpio_direction_output(1, 1);
 245        } else {
 246                /* Set MMC/SD host WP pin as input */
 247                if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 248                        printk(KERN_ERR "Could not reserve WP GPIO!\n");
 249                        return;
 250                }
 251                gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 252
 253                /* Monitor the Power-cable-connected signal */
 254                if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 255                        printk(KERN_ERR
 256                                "Could not reserve cable signal GPIO!\n");
 257                        return;
 258                }
 259                gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 260                if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 261                                palmz71_powercable, 0, "palmz71-cable", NULL))
 262                        printk(KERN_ERR
 263                                        "IRQ request for power cable failed!\n");
 264                palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
 265        }
 266}
 267
 268static void __init
 269omap_palmz71_init(void)
 270{
 271        /* mux pins for uarts */
 272        omap_cfg_reg(UART1_TX);
 273        omap_cfg_reg(UART1_RTS);
 274        omap_cfg_reg(UART2_TX);
 275        omap_cfg_reg(UART2_RTS);
 276        omap_cfg_reg(UART3_TX);
 277        omap_cfg_reg(UART3_RX);
 278
 279        palmz71_gpio_setup(1);
 280        omap_mpu_wdt_mode(0);
 281
 282        platform_add_devices(devices, ARRAY_SIZE(devices));
 283
 284        palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
 285        spi_register_board_info(palmz71_boardinfo,
 286                                ARRAY_SIZE(palmz71_boardinfo));
 287        omap1_usb_init(&palmz71_usb_config);
 288        omap_serial_init();
 289        omap_register_i2c_bus(1, 100, NULL, 0);
 290        palmz71_gpio_setup(0);
 291
 292        omapfb_set_lcd_config(&palmz71_lcd_config);
 293}
 294
 295MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 296        .atag_offset    = 0x100,
 297        .map_io         = omap15xx_map_io,
 298        .init_early     = omap1_init_early,
 299        .init_irq       = omap1_init_irq,
 300        .init_machine   = omap_palmz71_init,
 301        .init_late      = omap1_init_late,
 302        .init_time      = omap1_timer_init,
 303        .restart        = omap1_restart,
 304MACHINE_END
 305