kernel/2.6.29.6-aldebaran-rt/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/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
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/flash.h>
  34
  35 #include <mach/gpio.h>
  36 #include <mach/mux.h>
  37 #include <mach/usb.h>
  38 #include <mach/dma.h>
  39 #include <mach/tc.h>
  40 #include <mach/board.h>
  41 #include <mach/irda.h>
  42 #include <mach/keypad.h>
  43 #include <mach/common.h>
  44 #include <mach/omap-alsa.h>
  45
  46 #include <linux/spi/spi.h>
  47 #include <linux/spi/ads7846.h>
  48
  49 static void __init
  50 omap_palmz71_init_irq(void)
  51 {
  52         omap1_init_common_hw();
  53         omap_init_irq();
  54         omap_gpio_init();
  55 }
  56
  57 static int palmz71_keymap[] = {
  58         KEY(0, 0, KEY_F1),
  59         KEY(0, 1, KEY_F2),
  60         KEY(0, 2, KEY_F3),
  61         KEY(0, 3, KEY_F4),
  62         KEY(0, 4, KEY_POWER),
  63         KEY(1, 0, KEY_LEFT),
  64         KEY(1, 1, KEY_DOWN),
  65         KEY(1, 2, KEY_UP),
  66         KEY(1, 3, KEY_RIGHT),
  67         KEY(1, 4, KEY_ENTER),
  68         KEY(2, 0, KEY_CAMERA),
  69         0,
  70 };
  71
  72 static struct omap_kp_platform_data palmz71_kp_data = {
  73         .rows   = 8,
  74         .cols   = 8,
  75         .keymap = palmz71_keymap,
  76         .rep    = 1,
  77         .delay  = 80,
  78 };
  79
  80 static struct resource palmz71_kp_resources[] = {
  81         [0] = {
  82                 .start  = INT_KEYBOARD,
  83                 .end    = INT_KEYBOARD,
  84                 .flags  = IORESOURCE_IRQ,
  85         },
  86 };
  87
  88 static struct platform_device palmz71_kp_device = {
  89         .name   = "omap-keypad",
  90         .id     = -1,
  91         .dev    = {
  92                 .platform_data = &palmz71_kp_data,
  93         },
  94         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
  95         .resource       = palmz71_kp_resources,
  96 };
  97
  98 static struct mtd_partition palmz71_rom_partitions[] = {
  99         /* PalmOS "Small ROM", contains the bootloader and the debugger */
 100         {
 101                 .name           = "smallrom",
 102                 .offset         = 0,
 103                 .size           = 0xa000,
 104                 .mask_flags     = MTD_WRITEABLE,
 105         },
 106         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 107         {
 108                 .name   = "bigrom",
 109                 .offset = SZ_128K,
 110                 /*
 111                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 112                  * 0x7b0000 bytes in the English-only ("enUS") version.
 113                  */
 114                 .size           = 0x7b0000,
 115                 .mask_flags     = MTD_WRITEABLE,
 116         },
 117 };
 118
 119 static struct flash_platform_data palmz71_rom_data = {
 120         .map_name       = "map_rom",
 121         .name           = "onboardrom",
 122         .width          = 2,
 123         .parts          = palmz71_rom_partitions,
 124         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 125 };
 126
 127 static struct resource palmz71_rom_resource = {
 128         .start  = OMAP_CS0_PHYS,
 129         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 130         .flags  = IORESOURCE_MEM,
 131 };
 132
 133 static struct platform_device palmz71_rom_device = {
 134         .name   = "omapflash",
 135         .id     = -1,
 136         .dev = {
 137                 .platform_data = &palmz71_rom_data,
 138         },
 139         .num_resources  = 1,
 140         .resource       = &palmz71_rom_resource,
 141 };
 142
 143 static struct platform_device palmz71_lcd_device = {
 144         .name   = "lcd_palmz71",
 145         .id     = -1,
 146 };
 147
 148 static struct omap_irda_config palmz71_irda_config = {
 149         .transceiver_cap        = IR_SIRMODE,
 150         .rx_channel             = OMAP_DMA_UART3_RX,
 151         .tx_channel             = OMAP_DMA_UART3_TX,
 152         .dest_start             = UART3_THR,
 153         .src_start              = UART3_RHR,
 154         .tx_trigger             = 0,
 155         .rx_trigger             = 0,
 156 };
 157
 158 static struct resource palmz71_irda_resources[] = {
 159         [0] = {
 160                 .start  = INT_UART3,
 161                 .end    = INT_UART3,
 162                 .flags  = IORESOURCE_IRQ,
 163         },
 164 };
 165
 166 static struct platform_device palmz71_irda_device = {
 167         .name   = "omapirda",
 168         .id     = -1,
 169         .dev = {
 170                 .platform_data = &palmz71_irda_config,
 171         },
 172         .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 173         .resource       = palmz71_irda_resources,
 174 };
 175
 176 static struct platform_device palmz71_spi_device = {
 177         .name   = "spi_palmz71",
 178         .id     = -1,
 179 };
 180
 181 static struct omap_backlight_config palmz71_backlight_config = {
 182         .default_intensity      = 0xa0,
 183 };
 184
 185 static struct platform_device palmz71_backlight_device = {
 186         .name   = "omap-bl",
 187         .id     = -1,
 188         .dev    = {
 189                 .platform_data = &palmz71_backlight_config,
 190         },
 191 };
 192
 193 static struct platform_device *devices[] __initdata = {
 194         &palmz71_rom_device,
 195         &palmz71_kp_device,
 196         &palmz71_lcd_device,
 197         &palmz71_irda_device,
 198         &palmz71_spi_device,
 199         &palmz71_backlight_device,
 200 };
 201
 202 static int
 203 palmz71_get_pendown_state(void)
 204 {
 205         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 206 }
 207
 208 static const struct ads7846_platform_data palmz71_ts_info = {
 209         .model                  = 7846,
 210         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 211         .x_plate_ohms           = 419,
 212         .y_plate_ohms           = 486,
 213         .get_pendown_state      = palmz71_get_pendown_state,
 214 };
 215
 216 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 217         /* MicroWire (bus 2) CS0 has an ads7846e */
 218         .modalias       = "ads7846",
 219         .platform_data  = &palmz71_ts_info,
 220         .irq            = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
 221         .max_speed_hz   = 120000        /* max sample rate at 3V */
 222                                 * 26    /* command + data + overhead */,
 223         .bus_num        = 2,
 224         .chip_select    = 0,
 225 } };
 226
 227 static struct omap_usb_config palmz71_usb_config __initdata = {
 228         .register_dev   = 1,    /* Mini-B only receptacle */
 229         .hmc_mode       = 0,
 230         .pins[0]        = 2,
 231 };
 232
 233 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 234         .ctrl_name = "internal",
 235 };
 236
 237 static struct omap_uart_config palmz71_uart_config __initdata = {
 238         .enabled_uarts = (1 << 0) | (1 << 1) | (0 << 2),
 239 };
 240
 241 static struct omap_board_config_kernel palmz71_config[] __initdata = {
 242         {OMAP_TAG_USB,  &palmz71_usb_config},
 243         {OMAP_TAG_LCD,  &palmz71_lcd_config},
 244         {OMAP_TAG_UART, &palmz71_uart_config},
 245 };
 246
 247 static irqreturn_t
 248 palmz71_powercable(int irq, void *dev_id)
 249 {
 250         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 251                 printk(KERN_INFO "PM: Power cable connected\n");
 252                 set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 253                                 IRQ_TYPE_EDGE_FALLING);
 254         } else {
 255                 printk(KERN_INFO "PM: Power cable disconnected\n");
 256                 set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 257                                 IRQ_TYPE_EDGE_RISING);
 258         }
 259         return IRQ_HANDLED;
 260 }
 261
 262 static void __init
 263 omap_mpu_wdt_mode(int mode)
 264 {
 265         if (mode)
 266                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 267         else {
 268                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 269                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 270         }
 271 }
 272
 273 static void __init
 274 palmz71_gpio_setup(int early)
 275 {
 276         if (early) {
 277                 /* Only set GPIO1 so we have a working serial */
 278                 gpio_direction_output(1, 1);
 279         } else {
 280                 /* Set MMC/SD host WP pin as input */
 281                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 282                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
 283                         return;
 284                 }
 285                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 286
 287                 /* Monitor the Power-cable-connected signal */
 288                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 289                         printk(KERN_ERR
 290                                 "Could not reserve cable signal GPIO!\n");
 291                         return;
 292                 }
 293                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 294                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 295                                 palmz71_powercable, IRQF_SAMPLE_RANDOM,
 296                                 "palmz71-cable", 0))
 297                         printk(KERN_ERR
 298                                         "IRQ request for power cable failed!\n");
 299                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
 300         }
 301 }
 302
 303 static void __init
 304 omap_palmz71_init(void)
 305 {
 306         palmz71_gpio_setup(1);
 307         omap_mpu_wdt_mode(0);
 308
 309         omap_board_config = palmz71_config;
 310         omap_board_config_size = ARRAY_SIZE(palmz71_config);
 311
 312         platform_add_devices(devices, ARRAY_SIZE(devices));
 313
 314         spi_register_board_info(palmz71_boardinfo,
 315                                 ARRAY_SIZE(palmz71_boardinfo));
 316         omap_serial_init();
 317         omap_register_i2c_bus(1, 100, NULL, 0);
 318         palmz71_gpio_setup(0);
 319 }
 320
 321 static void __init
 322 omap_palmz71_map_io(void)
 323 {
 324         omap1_map_common_io();
 325 }
 326
 327 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 328         .phys_io = 0xfff00000,
 329         .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
 330         .boot_params = 0x10000100,.map_io = omap_palmz71_map_io,
 331         .init_irq = omap_palmz71_init_irq,
 332         .init_machine = omap_palmz71_init,
 333         .timer = &omap_timer,
 334 MACHINE_END