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/kernel.h>
  19#include <linux/init.h>
  20#include <linux/platform_device.h>
  21#include <linux/notifier.h>
  22#include <linux/clk.h>
  23#include <linux/irq.h>
  24#include <linux/input.h>
  25#include <linux/interrupt.h>
  26#include <linux/mtd/mtd.h>
  27#include <linux/mtd/partitions.h>
  28#include <linux/mtd/physmap.h>
  29
  30#include <mach/hardware.h>
  31#include <asm/mach-types.h>
  32#include <asm/mach/arch.h>
  33#include <asm/mach/map.h>
  34
  35#include <mach/gpio.h>
  36#include <plat/flash.h>
  37#include <plat/mux.h>
  38#include <plat/usb.h>
  39#include <plat/dma.h>
  40#include <plat/tc.h>
  41#include <plat/board.h>
  42#include <plat/irda.h>
  43#include <plat/keypad.h>
  44#include <plat/common.h>
  45#include <plat/omap-alsa.h>
  46
  47#include <linux/spi/spi.h>
  48#include <linux/spi/ads7846.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 void __init
  61omap_palmz71_init_irq(void)
  62{
  63        omap1_init_common_hw();
  64        omap_init_irq();
  65}
  66
  67static const unsigned int palmz71_keymap[] = {
  68        KEY(0, 0, KEY_F1),
  69        KEY(1, 0, KEY_F2),
  70        KEY(2, 0, KEY_F3),
  71        KEY(3, 0, KEY_F4),
  72        KEY(4, 0, KEY_POWER),
  73        KEY(0, 1, KEY_LEFT),
  74        KEY(1, 1, KEY_DOWN),
  75        KEY(2, 1, KEY_UP),
  76        KEY(3, 1, KEY_RIGHT),
  77        KEY(4, 1, KEY_ENTER),
  78        KEY(0, 2, KEY_CAMERA),
  79};
  80
  81static const struct matrix_keymap_data palmz71_keymap_data = {
  82        .keymap         = palmz71_keymap,
  83        .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  84};
  85
  86static struct omap_kp_platform_data palmz71_kp_data = {
  87        .rows   = 8,
  88        .cols   = 8,
  89        .keymap_data    = &palmz71_keymap_data,
  90        .rep    = true,
  91        .delay  = 80,
  92};
  93
  94static struct resource palmz71_kp_resources[] = {
  95        [0] = {
  96                .start  = INT_KEYBOARD,
  97                .end    = INT_KEYBOARD,
  98                .flags  = IORESOURCE_IRQ,
  99        },
 100};
 101
 102static struct platform_device palmz71_kp_device = {
 103        .name   = "omap-keypad",
 104        .id     = -1,
 105        .dev    = {
 106                .platform_data = &palmz71_kp_data,
 107        },
 108        .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 109        .resource       = palmz71_kp_resources,
 110};
 111
 112static struct mtd_partition palmz71_rom_partitions[] = {
 113        /* PalmOS "Small ROM", contains the bootloader and the debugger */
 114        {
 115                .name           = "smallrom",
 116                .offset         = 0,
 117                .size           = 0xa000,
 118                .mask_flags     = MTD_WRITEABLE,
 119        },
 120        /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 121        {
 122                .name   = "bigrom",
 123                .offset = SZ_128K,
 124                /*
 125                 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 126                 * 0x7b0000 bytes in the English-only ("enUS") version.
 127                 */
 128                .size           = 0x7b0000,
 129                .mask_flags     = MTD_WRITEABLE,
 130        },
 131};
 132
 133static struct physmap_flash_data palmz71_rom_data = {
 134        .width          = 2,
 135        .set_vpp        = omap1_set_vpp,
 136        .parts          = palmz71_rom_partitions,
 137        .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 138};
 139
 140static struct resource palmz71_rom_resource = {
 141        .start  = OMAP_CS0_PHYS,
 142        .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 143        .flags  = IORESOURCE_MEM,
 144};
 145
 146static struct platform_device palmz71_rom_device = {
 147        .name   = "physmap-flash",
 148        .id     = -1,
 149        .dev = {
 150                .platform_data = &palmz71_rom_data,
 151        },
 152        .num_resources  = 1,
 153        .resource       = &palmz71_rom_resource,
 154};
 155
 156static struct platform_device palmz71_lcd_device = {
 157        .name   = "lcd_palmz71",
 158        .id     = -1,
 159};
 160
 161static struct omap_irda_config palmz71_irda_config = {
 162        .transceiver_cap        = IR_SIRMODE,
 163        .rx_channel             = OMAP_DMA_UART3_RX,
 164        .tx_channel             = OMAP_DMA_UART3_TX,
 165        .dest_start             = UART3_THR,
 166        .src_start              = UART3_RHR,
 167        .tx_trigger             = 0,
 168        .rx_trigger             = 0,
 169};
 170
 171static struct resource palmz71_irda_resources[] = {
 172        [0] = {
 173                .start  = INT_UART3,
 174                .end    = INT_UART3,
 175                .flags  = IORESOURCE_IRQ,
 176        },
 177};
 178
 179static struct platform_device palmz71_irda_device = {
 180        .name   = "omapirda",
 181        .id     = -1,
 182        .dev = {
 183                .platform_data = &palmz71_irda_config,
 184        },
 185        .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 186        .resource       = palmz71_irda_resources,
 187};
 188
 189static struct platform_device palmz71_spi_device = {
 190        .name   = "spi_palmz71",
 191        .id     = -1,
 192};
 193
 194static struct omap_backlight_config palmz71_backlight_config = {
 195        .default_intensity      = 0xa0,
 196};
 197
 198static struct platform_device palmz71_backlight_device = {
 199        .name   = "omap-bl",
 200        .id     = -1,
 201        .dev    = {
 202                .platform_data = &palmz71_backlight_config,
 203        },
 204};
 205
 206static struct platform_device *devices[] __initdata = {
 207        &palmz71_rom_device,
 208        &palmz71_kp_device,
 209        &palmz71_lcd_device,
 210        &palmz71_irda_device,
 211        &palmz71_spi_device,
 212        &palmz71_backlight_device,
 213};
 214
 215static int
 216palmz71_get_pendown_state(void)
 217{
 218        return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 219}
 220
 221static const struct ads7846_platform_data palmz71_ts_info = {
 222        .model                  = 7846,
 223        .vref_delay_usecs       = 100,  /* internal, no capacitor */
 224        .x_plate_ohms           = 419,
 225        .y_plate_ohms           = 486,
 226        .get_pendown_state      = palmz71_get_pendown_state,
 227};
 228
 229static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 230        /* MicroWire (bus 2) CS0 has an ads7846e */
 231        .modalias       = "ads7846",
 232        .platform_data  = &palmz71_ts_info,
 233        .irq            = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
 234        .max_speed_hz   = 120000        /* max sample rate at 3V */
 235                                * 26    /* command + data + overhead */,
 236        .bus_num        = 2,
 237        .chip_select    = 0,
 238} };
 239
 240static struct omap_usb_config palmz71_usb_config __initdata = {
 241        .register_dev   = 1,    /* Mini-B only receptacle */
 242        .hmc_mode       = 0,
 243        .pins[0]        = 2,
 244};
 245
 246static struct omap_lcd_config palmz71_lcd_config __initdata = {
 247        .ctrl_name = "internal",
 248};
 249
 250static struct omap_board_config_kernel palmz71_config[] __initdata = {
 251        {OMAP_TAG_LCD,  &palmz71_lcd_config},
 252};
 253
 254static irqreturn_t
 255palmz71_powercable(int irq, void *dev_id)
 256{
 257        if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 258                printk(KERN_INFO "PM: Power cable connected\n");
 259                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 260                                 IRQ_TYPE_EDGE_FALLING);
 261        } else {
 262                printk(KERN_INFO "PM: Power cable disconnected\n");
 263                irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 264                                 IRQ_TYPE_EDGE_RISING);
 265        }
 266        return IRQ_HANDLED;
 267}
 268
 269static void __init
 270omap_mpu_wdt_mode(int mode)
 271{
 272        if (mode)
 273                omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 274        else {
 275                omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 276                omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 277        }
 278}
 279
 280static void __init
 281palmz71_gpio_setup(int early)
 282{
 283        if (early) {
 284                /* Only set GPIO1 so we have a working serial */
 285                gpio_direction_output(1, 1);
 286        } else {
 287                /* Set MMC/SD host WP pin as input */
 288                if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 289                        printk(KERN_ERR "Could not reserve WP GPIO!\n");
 290                        return;
 291                }
 292                gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 293
 294                /* Monitor the Power-cable-connected signal */
 295                if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 296                        printk(KERN_ERR
 297                                "Could not reserve cable signal GPIO!\n");
 298                        return;
 299                }
 300                gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 301                if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 302                                palmz71_powercable, IRQF_SAMPLE_RANDOM,
 303                                "palmz71-cable", 0))
 304                        printk(KERN_ERR
 305                                        "IRQ request for power cable failed!\n");
 306                palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
 307        }
 308}
 309
 310static void __init
 311omap_palmz71_init(void)
 312{
 313        /* mux pins for uarts */
 314        omap_cfg_reg(UART1_TX);
 315        omap_cfg_reg(UART1_RTS);
 316        omap_cfg_reg(UART2_TX);
 317        omap_cfg_reg(UART2_RTS);
 318        omap_cfg_reg(UART3_TX);
 319        omap_cfg_reg(UART3_RX);
 320
 321        palmz71_gpio_setup(1);
 322        omap_mpu_wdt_mode(0);
 323
 324        omap_board_config = palmz71_config;
 325        omap_board_config_size = ARRAY_SIZE(palmz71_config);
 326
 327        platform_add_devices(devices, ARRAY_SIZE(devices));
 328
 329        spi_register_board_info(palmz71_boardinfo,
 330                                ARRAY_SIZE(palmz71_boardinfo));
 331        omap1_usb_init(&palmz71_usb_config);
 332        omap_serial_init();
 333        omap_register_i2c_bus(1, 100, NULL, 0);
 334        palmz71_gpio_setup(0);
 335}
 336
 337static void __init
 338omap_palmz71_map_io(void)
 339{
 340        omap1_map_common_io();
 341}
 342
 343MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 344        .boot_params    = 0x10000100,
 345        .map_io         = omap_palmz71_map_io,
 346        .reserve        = omap_reserve,
 347        .init_irq       = omap_palmz71_init_irq,
 348        .init_machine   = omap_palmz71_init,
 349        .timer          = &omap_timer,
 350MACHINE_END
 351