arch/arm/mach-omap1/board-palmz71.c

   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 "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
  60 static 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
  74 static const struct matrix_keymap_data palmz71_keymap_data = {
  75         .keymap         = palmz71_keymap,
  76         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  77 };
  78
  79 static 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
  87 static struct resource palmz71_kp_resources[] = {
  88         [0] = {
  89                 .start  = INT_KEYBOARD,
  90                 .end    = INT_KEYBOARD,
  91                 .flags  = IORESOURCE_IRQ,
  92         },
  93 };
  94
  95 static 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
 105 static 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
 126 static 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
 133 static struct resource palmz71_rom_resource = {
 134         .start  = OMAP_CS0_PHYS,
 135         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 136         .flags  = IORESOURCE_MEM,
 137 };
 138
 139 static 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
 149 static struct platform_device palmz71_lcd_device = {
 150         .name   = "lcd_palmz71",
 151         .id     = -1,
 152 };
 153
 154 static struct platform_device palmz71_spi_device = {
 155         .name   = "spi_palmz71",
 156         .id     = -1,
 157 };
 158
 159 static struct omap_backlight_config palmz71_backlight_config = {
 160         .default_intensity      = 0xa0,
 161 };
 162
 163 static struct platform_device palmz71_backlight_device = {
 164         .name   = "omap-bl",
 165         .id     = -1,
 166         .dev    = {
 167                 .platform_data = &palmz71_backlight_config,
 168         },
 169 };
 170
 171 static 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
 179 static int
 180 palmz71_get_pendown_state(void)
 181 {
 182         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 183 }
 184
 185 static 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
 193 static 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
 203 static 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
 209 static const struct omap_lcd_config palmz71_lcd_config __initconst = {
 210         .ctrl_name = "internal",
 211 };
 212
 213 static irqreturn_t
 214 palmz71_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
 228 static void __init
 229 omap_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
 239 static void __init
 240 palmz71_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
 268 static void __init
 269 omap_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
 295 MACHINE_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         .handle_irq     = omap1_handle_irq,
 301         .init_machine   = omap_palmz71_init,
 302         .init_late      = omap1_init_late,
 303         .init_time      = omap1_timer_init,
 304         .restart        = omap1_restart,
 305 MACHINE_END