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 <plat/dma.h>
  42#include <plat/tc.h>
  43#include <mach/irda.h>
  44#include <linux/platform_data/keypad-omap.h>
  45
  46#include <mach/hardware.h>
  47#include <mach/usb.h>
  48
  49#include "common.h"
  50
  51#define PALMZ71_USBDETECT_GPIO  0
  52#define PALMZ71_PENIRQ_GPIO     6
  53#define PALMZ71_MMC_WP_GPIO     8
  54#define PALMZ71_HDQ_GPIO        11
  55
  56#define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
  57#define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
  58#define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
  59#define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
  60
  61static const unsigned int palmz71_keymap[] = {
  62        KEY(0, 0, KEY_F1),
  63        KEY(1, 0, KEY_F2),
  64        KEY(2, 0, KEY_F3),
  65        KEY(3, 0, KEY_F4),
  66        KEY(4, 0, KEY_POWER),
  67        KEY(0, 1, KEY_LEFT),
  68        KEY(1, 1, KEY_DOWN),
  69        KEY(2, 1, KEY_UP),
  70        KEY(3, 1, KEY_RIGHT),
  71        KEY(4, 1, KEY_ENTER),
  72        KEY(0, 2, KEY_CAMERA),
  73};
  74
  75static const struct matrix_keymap_data palmz71_keymap_data = {
  76        .keymap         = palmz71_keymap,
  77        .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  78};
  79
  80static struct omap_kp_platform_data palmz71_kp_data = {
  81        .rows   = 8,
  82        .cols   = 8,
  83        .keymap_data    = &palmz71_keymap_data,
  84        .rep    = true,
  85        .delay  = 80,
  86};
  87
  88static struct resource palmz71_kp_resources[] = {
  89        [0] = {
  90                .start  = INT_KEYBOARD,
  91                .end    = INT_KEYBOARD,
  92                .flags  = IORESOURCE_IRQ,
  93        },
  94};
  95
  96static struct platform_device palmz71_kp_device = {
  97        .name   = "omap-keypad",
  98        .id     = -1,
  99        .dev    = {
 100                .platform_data = &palmz71_kp_data,
 101        },
 102        .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 103        .resource       = palmz71_kp_resources,
 104};
 105
 106static struct mtd_partition palmz71_rom_partitions[] = {
 107        /* PalmOS "Small ROM", contains the bootloader and the debugger */
 108        {
 109                .name           = "smallrom",
 110                .offset         = 0,
 111                .size           = 0xa000,
 112                .mask_flags     = MTD_WRITEABLE,
 113        },
 114        /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 115        {
 116                .name   = "bigrom",
 117                .offset = SZ_128K,
 118                /*
 119                 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 120                 * 0x7b0000 bytes in the English-only ("enUS") version.
 121                 */
 122                .size           = 0x7b0000,
 123                .mask_flags     = MTD_WRITEABLE,
 124        },
 125};
 126
 127static struct physmap_flash_data palmz71_rom_data = {
 128        .width          = 2,
 129        .set_vpp        = omap1_set_vpp,
 130        .parts          = palmz71_rom_partitions,
 131        .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 132};
 133
 134static struct resource palmz71_rom_resource = {
 135        .start  = OMAP_CS0_PHYS,
 136        .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 137        .flags  = IORESOURCE_MEM,
 138};
 139
 140static struct platform_device palmz71_rom_device = {
 141        .name   = "physmap-flash",
 142        .id     = -1,
 143        .dev = {
 144                .platform_data = &palmz71_rom_data,
 145        },
 146        .num_resources  = 1,
 147        .resource       = &palmz71_rom_resource,
 148};
 149
 150static struct platform_device palmz71_lcd_device = {
 151        .name   = "lcd_palmz71",
 152        .id     = -1,
 153};
 154
 155static struct omap_irda_config palmz71_irda_config = {
 156        .transceiver_cap        = IR_SIRMODE,
 157        .rx_channel             = OMAP_DMA_UART3_RX,
 158        .tx_channel             = OMAP_DMA_UART3_TX,
 159        .dest_start             = UART3_THR,
 160        .src_start              = UART3_RHR,
 161        .tx_trigger             = 0,
 162        .rx_trigger             = 0,
 163};
 164
 165static struct resource palmz71_irda_resources[] = {
 166        [0] = {
 167                .start  = INT_UART3,
 168                .end    = INT_UART3,
 169                .flags  = IORESOURCE_IRQ,
 170        },
 171};
 172
 173static struct platform_device palmz71_irda_device = {
 174        .name   = "omapirda",
 175        .id     = -1,
 176        .dev = {
 177                .platform_data = &palmz71_irda_config,
 178        },
 179        .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 180        .resource       = palmz71_irda_resources,
 181};
 182
 183static struct platform_device palmz71_spi_device = {
 184        .name   = "spi_palmz71",
 185        .id     = -1,
 186};
 187
 188static struct omap_backlight_config palmz71_backlight_config = {
 189        .default_intensity      = 0xa0,
 190};
 191
 192static struct platform_device palmz71_backlight_device = {
 193        .name   = "omap-bl",
 194        .id     = -1,
 195        .dev    = {
 196                .platform_data = &palmz71_backlight_config,
 197        },
 198};
 199
 200static struct platform_device *devices[] __initdata = {
 201        &palmz71_rom_device,
 202        &palmz71_kp_device,
 203        &palmz71_lcd_device,
 204        &palmz71_irda_device,
 205        &palmz71_spi_device,
 206        &palmz71_backlight_device,
 207};
 208
 209static int
 210palmz71_get_pendown_state(void)
 211{
 212        return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 213}
 214
 215static const struct ads7846_platform_data palmz71_ts_info = {
 216        .model                  = 7846,
 217        .vref_delay_usecs       = 100,  /* internal, no capacitor */
 218        .x_plate_ohms           = 419,
 219        .y_plate_ohms           = 486,
 220        .get_pendown_state      = palmz71_get_pendown_state,
 221};
 222
 223static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 224        /* MicroWire (bus 2) CS0 has an ads7846e */
 225        .modalias       = "ads7846",
 226        .platform_data  = &palmz71_ts_info,
 227        .max_speed_hz   = 120000        /* max sample rate at 3V */
 228                                * 26    /* command + data + overhead */,
 229        .bus_num        = 2,
 230        .chip_select    = 0,
 231} };
 232
 233static struct omap_usb_config palmz71_usb_config __initdata = {
 234        .register_dev   = 1,    /* Mini-B only receptacle */
 235        .hmc_mode       = 0,
 236        .pins[0]        = 2,
 237};
 238
 239static struct omap_lcd_config palmz71_lcd_config __initdata = {
 240        .ctrl_name = "internal",
 241};
 242
 243static irqreturn_t
 244palmz71_powercable(int irq, void *dev_id)
 245{
 246        if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 247                printk(KERN_INFO "PM: Power cable connected\n");
 248                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 249                                 IRQ_TYPE_EDGE_FALLING);
 250        } else {
 251                printk(KERN_INFO "PM: Power cable disconnected\n");
 252                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 253                                 IRQ_TYPE_EDGE_RISING);
 254        }
 255        return IRQ_HANDLED;
 256}
 257
 258static void __init
 259omap_mpu_wdt_mode(int mode)
 260{
 261        if (mode)
 262                omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 263        else {
 264                omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 265                omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 266        }
 267}
 268
 269static void __init
 270palmz71_gpio_setup(int early)
 271{
 272        if (early) {
 273                /* Only set GPIO1 so we have a working serial */
 274                gpio_direction_output(1, 1);
 275        } else {
 276                /* Set MMC/SD host WP pin as input */
 277                if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 278                        printk(KERN_ERR "Could not reserve WP GPIO!\n");
 279                        return;
 280                }
 281                gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 282
 283                /* Monitor the Power-cable-connected signal */
 284                if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 285                        printk(KERN_ERR
 286                                "Could not reserve cable signal GPIO!\n");
 287                        return;
 288                }
 289                gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 290                if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 291                                palmz71_powercable, 0, "palmz71-cable", NULL))
 292                        printk(KERN_ERR
 293                                        "IRQ request for power cable failed!\n");
 294                palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
 295        }
 296}
 297
 298static void __init
 299omap_palmz71_init(void)
 300{
 301        /* mux pins for uarts */
 302        omap_cfg_reg(UART1_TX);
 303        omap_cfg_reg(UART1_RTS);
 304        omap_cfg_reg(UART2_TX);
 305        omap_cfg_reg(UART2_RTS);
 306        omap_cfg_reg(UART3_TX);
 307        omap_cfg_reg(UART3_RX);
 308
 309        palmz71_gpio_setup(1);
 310        omap_mpu_wdt_mode(0);
 311
 312        platform_add_devices(devices, ARRAY_SIZE(devices));
 313
 314        palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
 315        spi_register_board_info(palmz71_boardinfo,
 316                                ARRAY_SIZE(palmz71_boardinfo));
 317        omap1_usb_init(&palmz71_usb_config);
 318        omap_serial_init();
 319        omap_register_i2c_bus(1, 100, NULL, 0);
 320        palmz71_gpio_setup(0);
 321
 322        omapfb_set_lcd_config(&palmz71_lcd_config);
 323}
 324
 325MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 326        .atag_offset    = 0x100,
 327        .map_io         = omap15xx_map_io,
 328        .init_early     = omap1_init_early,
 329        .reserve        = omap_reserve,
 330        .init_irq       = omap1_init_irq,
 331        .init_machine   = omap_palmz71_init,
 332        .init_late      = omap1_init_late,
 333        .timer          = &omap1_timer,
 334        .restart        = omap1_restart,
 335MACHINE_END
 336