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
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37
  38 #include <plat/flash.h>
  39 #include <plat/mux.h>
  40 #include <plat/usb.h>
  41 #include <plat/dma.h>
  42 #include <plat/tc.h>
  43 #include <plat/board.h>
  44 #include <plat/irda.h>
  45 #include <plat/keypad.h>
  46
  47 #include <mach/hardware.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
  61 static 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
  75 static const struct matrix_keymap_data palmz71_keymap_data = {
  76         .keymap         = palmz71_keymap,
  77         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  78 };
  79
  80 static 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
  88 static struct resource palmz71_kp_resources[] = {
  89         [0] = {
  90                 .start  = INT_KEYBOARD,
  91                 .end    = INT_KEYBOARD,
  92                 .flags  = IORESOURCE_IRQ,
  93         },
  94 };
  95
  96 static 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
 106 static 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
 127 static 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
 134 static struct resource palmz71_rom_resource = {
 135         .start  = OMAP_CS0_PHYS,
 136         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 137         .flags  = IORESOURCE_MEM,
 138 };
 139
 140 static 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
 150 static struct platform_device palmz71_lcd_device = {
 151         .name   = "lcd_palmz71",
 152         .id     = -1,
 153 };
 154
 155 static 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
 165 static struct resource palmz71_irda_resources[] = {
 166         [0] = {
 167                 .start  = INT_UART3,
 168                 .end    = INT_UART3,
 169                 .flags  = IORESOURCE_IRQ,
 170         },
 171 };
 172
 173 static 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
 183 static struct platform_device palmz71_spi_device = {
 184         .name   = "spi_palmz71",
 185         .id     = -1,
 186 };
 187
 188 static struct omap_backlight_config palmz71_backlight_config = {
 189         .default_intensity      = 0xa0,
 190 };
 191
 192 static struct platform_device palmz71_backlight_device = {
 193         .name   = "omap-bl",
 194         .id     = -1,
 195         .dev    = {
 196                 .platform_data = &palmz71_backlight_config,
 197         },
 198 };
 199
 200 static 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
 209 static int
 210 palmz71_get_pendown_state(void)
 211 {
 212         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 213 }
 214
 215 static 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
 223 static 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
 233 static 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
 239 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 240         .ctrl_name = "internal",
 241 };
 242
 243 static irqreturn_t
 244 palmz71_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
 258 static void __init
 259 omap_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
 269 static void __init
 270 palmz71_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, IRQF_SAMPLE_RANDOM,
 292                                 "palmz71-cable", 0))
 293                         printk(KERN_ERR
 294                                         "IRQ request for power cable failed!\n");
 295                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
 296         }
 297 }
 298
 299 static void __init
 300 omap_palmz71_init(void)
 301 {
 302         /* mux pins for uarts */
 303         omap_cfg_reg(UART1_TX);
 304         omap_cfg_reg(UART1_RTS);
 305         omap_cfg_reg(UART2_TX);
 306         omap_cfg_reg(UART2_RTS);
 307         omap_cfg_reg(UART3_TX);
 308         omap_cfg_reg(UART3_RX);
 309
 310         palmz71_gpio_setup(1);
 311         omap_mpu_wdt_mode(0);
 312
 313         platform_add_devices(devices, ARRAY_SIZE(devices));
 314
 315         palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
 316         spi_register_board_info(palmz71_boardinfo,
 317                                 ARRAY_SIZE(palmz71_boardinfo));
 318         omap1_usb_init(&palmz71_usb_config);
 319         omap_serial_init();
 320         omap_register_i2c_bus(1, 100, NULL, 0);
 321         palmz71_gpio_setup(0);
 322
 323         omapfb_set_lcd_config(&palmz71_lcd_config);
 324 }
 325
 326 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 327         .atag_offset    = 0x100,
 328         .map_io         = omap15xx_map_io,
 329         .init_early     = omap1_init_early,
 330         .reserve        = omap_reserve,
 331         .init_irq       = omap1_init_irq,
 332         .init_machine   = omap_palmz71_init,
 333         .timer          = &omap1_timer,
 334         .restart        = omap1_restart,
 335 MACHINE_END