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 #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
  60 static void __init
  61 omap_palmz71_init_irq(void)
  62 {
  63         omap1_init_common_hw();
  64         omap_init_irq();
  65         omap_gpio_init();
  66 }
  67
  68 static int palmz71_keymap[] = {
  69         KEY(0, 0, KEY_F1),
  70         KEY(0, 1, KEY_F2),
  71         KEY(0, 2, KEY_F3),
  72         KEY(0, 3, KEY_F4),
  73         KEY(0, 4, KEY_POWER),
  74         KEY(1, 0, KEY_LEFT),
  75         KEY(1, 1, KEY_DOWN),
  76         KEY(1, 2, KEY_UP),
  77         KEY(1, 3, KEY_RIGHT),
  78         KEY(1, 4, KEY_ENTER),
  79         KEY(2, 0, KEY_CAMERA),
  80         0,
  81 };
  82
  83 static struct omap_kp_platform_data palmz71_kp_data = {
  84         .rows   = 8,
  85         .cols   = 8,
  86         .keymap = palmz71_keymap,
  87         .rep    = 1,
  88         .delay  = 80,
  89 };
  90
  91 static struct resource palmz71_kp_resources[] = {
  92         [0] = {
  93                 .start  = INT_KEYBOARD,
  94                 .end    = INT_KEYBOARD,
  95                 .flags  = IORESOURCE_IRQ,
  96         },
  97 };
  98
  99 static struct platform_device palmz71_kp_device = {
 100         .name   = "omap-keypad",
 101         .id     = -1,
 102         .dev    = {
 103                 .platform_data = &palmz71_kp_data,
 104         },
 105         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 106         .resource       = palmz71_kp_resources,
 107 };
 108
 109 static struct mtd_partition palmz71_rom_partitions[] = {
 110         /* PalmOS "Small ROM", contains the bootloader and the debugger */
 111         {
 112                 .name           = "smallrom",
 113                 .offset         = 0,
 114                 .size           = 0xa000,
 115                 .mask_flags     = MTD_WRITEABLE,
 116         },
 117         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 118         {
 119                 .name   = "bigrom",
 120                 .offset = SZ_128K,
 121                 /*
 122                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 123                  * 0x7b0000 bytes in the English-only ("enUS") version.
 124                  */
 125                 .size           = 0x7b0000,
 126                 .mask_flags     = MTD_WRITEABLE,
 127         },
 128 };
 129
 130 static struct physmap_flash_data palmz71_rom_data = {
 131         .width          = 2,
 132         .set_vpp        = omap1_set_vpp,
 133         .parts          = palmz71_rom_partitions,
 134         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 135 };
 136
 137 static struct resource palmz71_rom_resource = {
 138         .start  = OMAP_CS0_PHYS,
 139         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 140         .flags  = IORESOURCE_MEM,
 141 };
 142
 143 static struct platform_device palmz71_rom_device = {
 144         .name   = "physmap-flash",
 145         .id     = -1,
 146         .dev = {
 147                 .platform_data = &palmz71_rom_data,
 148         },
 149         .num_resources  = 1,
 150         .resource       = &palmz71_rom_resource,
 151 };
 152
 153 static struct platform_device palmz71_lcd_device = {
 154         .name   = "lcd_palmz71",
 155         .id     = -1,
 156 };
 157
 158 static struct omap_irda_config palmz71_irda_config = {
 159         .transceiver_cap        = IR_SIRMODE,
 160         .rx_channel             = OMAP_DMA_UART3_RX,
 161         .tx_channel             = OMAP_DMA_UART3_TX,
 162         .dest_start             = UART3_THR,
 163         .src_start              = UART3_RHR,
 164         .tx_trigger             = 0,
 165         .rx_trigger             = 0,
 166 };
 167
 168 static struct resource palmz71_irda_resources[] = {
 169         [0] = {
 170                 .start  = INT_UART3,
 171                 .end    = INT_UART3,
 172                 .flags  = IORESOURCE_IRQ,
 173         },
 174 };
 175
 176 static struct platform_device palmz71_irda_device = {
 177         .name   = "omapirda",
 178         .id     = -1,
 179         .dev = {
 180                 .platform_data = &palmz71_irda_config,
 181         },
 182         .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 183         .resource       = palmz71_irda_resources,
 184 };
 185
 186 static struct platform_device palmz71_spi_device = {
 187         .name   = "spi_palmz71",
 188         .id     = -1,
 189 };
 190
 191 static struct omap_backlight_config palmz71_backlight_config = {
 192         .default_intensity      = 0xa0,
 193 };
 194
 195 static struct platform_device palmz71_backlight_device = {
 196         .name   = "omap-bl",
 197         .id     = -1,
 198         .dev    = {
 199                 .platform_data = &palmz71_backlight_config,
 200         },
 201 };
 202
 203 static struct platform_device *devices[] __initdata = {
 204         &palmz71_rom_device,
 205         &palmz71_kp_device,
 206         &palmz71_lcd_device,
 207         &palmz71_irda_device,
 208         &palmz71_spi_device,
 209         &palmz71_backlight_device,
 210 };
 211
 212 static int
 213 palmz71_get_pendown_state(void)
 214 {
 215         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 216 }
 217
 218 static const struct ads7846_platform_data palmz71_ts_info = {
 219         .model                  = 7846,
 220         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 221         .x_plate_ohms           = 419,
 222         .y_plate_ohms           = 486,
 223         .get_pendown_state      = palmz71_get_pendown_state,
 224 };
 225
 226 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 227         /* MicroWire (bus 2) CS0 has an ads7846e */
 228         .modalias       = "ads7846",
 229         .platform_data  = &palmz71_ts_info,
 230         .irq            = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
 231         .max_speed_hz   = 120000        /* max sample rate at 3V */
 232                                 * 26    /* command + data + overhead */,
 233         .bus_num        = 2,
 234         .chip_select    = 0,
 235 } };
 236
 237 static struct omap_usb_config palmz71_usb_config __initdata = {
 238         .register_dev   = 1,    /* Mini-B only receptacle */
 239         .hmc_mode       = 0,
 240         .pins[0]        = 2,
 241 };
 242
 243 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 244         .ctrl_name = "internal",
 245 };
 246
 247 static struct omap_board_config_kernel palmz71_config[] __initdata = {
 248         {OMAP_TAG_LCD,  &palmz71_lcd_config},
 249 };
 250
 251 static irqreturn_t
 252 palmz71_powercable(int irq, void *dev_id)
 253 {
 254         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 255                 printk(KERN_INFO "PM: Power cable connected\n");
 256                 set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 257                                 IRQ_TYPE_EDGE_FALLING);
 258         } else {
 259                 printk(KERN_INFO "PM: Power cable disconnected\n");
 260                 set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 261                                 IRQ_TYPE_EDGE_RISING);
 262         }
 263         return IRQ_HANDLED;
 264 }
 265
 266 static void __init
 267 omap_mpu_wdt_mode(int mode)
 268 {
 269         if (mode)
 270                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 271         else {
 272                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 273                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 274         }
 275 }
 276
 277 static void __init
 278 palmz71_gpio_setup(int early)
 279 {
 280         if (early) {
 281                 /* Only set GPIO1 so we have a working serial */
 282                 gpio_direction_output(1, 1);
 283         } else {
 284                 /* Set MMC/SD host WP pin as input */
 285                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 286                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
 287                         return;
 288                 }
 289                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 290
 291                 /* Monitor the Power-cable-connected signal */
 292                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 293                         printk(KERN_ERR
 294                                 "Could not reserve cable signal GPIO!\n");
 295                         return;
 296                 }
 297                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 298                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 299                                 palmz71_powercable, IRQF_SAMPLE_RANDOM,
 300                                 "palmz71-cable", 0))
 301                         printk(KERN_ERR
 302                                         "IRQ request for power cable failed!\n");
 303                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
 304         }
 305 }
 306
 307 static void __init
 308 omap_palmz71_init(void)
 309 {
 310         /* mux pins for uarts */
 311         omap_cfg_reg(UART1_TX);
 312         omap_cfg_reg(UART1_RTS);
 313         omap_cfg_reg(UART2_TX);
 314         omap_cfg_reg(UART2_RTS);
 315         omap_cfg_reg(UART3_TX);
 316         omap_cfg_reg(UART3_RX);
 317
 318         palmz71_gpio_setup(1);
 319         omap_mpu_wdt_mode(0);
 320
 321         omap_board_config = palmz71_config;
 322         omap_board_config_size = ARRAY_SIZE(palmz71_config);
 323
 324         platform_add_devices(devices, ARRAY_SIZE(devices));
 325
 326         spi_register_board_info(palmz71_boardinfo,
 327                                 ARRAY_SIZE(palmz71_boardinfo));
 328         omap1_usb_init(&palmz71_usb_config);
 329         omap_serial_init();
 330         omap_register_i2c_bus(1, 100, NULL, 0);
 331         palmz71_gpio_setup(0);
 332 }
 333
 334 static void __init
 335 omap_palmz71_map_io(void)
 336 {
 337         omap1_map_common_io();
 338 }
 339
 340 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 341         .phys_io        = 0xfff00000,
 342         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 343         .boot_params    = 0x10000100,
 344         .map_io         = omap_palmz71_map_io,
 345         .reserve        = omap_reserve,
 346         .init_irq       = omap_palmz71_init_irq,
 347         .init_machine   = omap_palmz71_init,
 348         .timer          = &omap_timer,
 349 MACHINE_END