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 }
  66
  67 static 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
  81 static const struct matrix_keymap_data palmz71_keymap_data = {
  82         .keymap         = palmz71_keymap,
  83         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  84 };
  85
  86 static 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
  94 static struct resource palmz71_kp_resources[] = {
  95         [0] = {
  96                 .start  = INT_KEYBOARD,
  97                 .end    = INT_KEYBOARD,
  98                 .flags  = IORESOURCE_IRQ,
  99         },
 100 };
 101
 102 static 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
 112 static 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
 133 static 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
 140 static struct resource palmz71_rom_resource = {
 141         .start  = OMAP_CS0_PHYS,
 142         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 143         .flags  = IORESOURCE_MEM,
 144 };
 145
 146 static 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
 156 static struct platform_device palmz71_lcd_device = {
 157         .name   = "lcd_palmz71",
 158         .id     = -1,
 159 };
 160
 161 static 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
 171 static struct resource palmz71_irda_resources[] = {
 172         [0] = {
 173                 .start  = INT_UART3,
 174                 .end    = INT_UART3,
 175                 .flags  = IORESOURCE_IRQ,
 176         },
 177 };
 178
 179 static 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
 189 static struct platform_device palmz71_spi_device = {
 190         .name   = "spi_palmz71",
 191         .id     = -1,
 192 };
 193
 194 static struct omap_backlight_config palmz71_backlight_config = {
 195         .default_intensity      = 0xa0,
 196 };
 197
 198 static struct platform_device palmz71_backlight_device = {
 199         .name   = "omap-bl",
 200         .id     = -1,
 201         .dev    = {
 202                 .platform_data = &palmz71_backlight_config,
 203         },
 204 };
 205
 206 static 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
 215 static int
 216 palmz71_get_pendown_state(void)
 217 {
 218         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 219 }
 220
 221 static 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
 229 static 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
 240 static 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
 246 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 247         .ctrl_name = "internal",
 248 };
 249
 250 static struct omap_board_config_kernel palmz71_config[] __initdata = {
 251         {OMAP_TAG_LCD,  &palmz71_lcd_config},
 252 };
 253
 254 static irqreturn_t
 255 palmz71_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                 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                 set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 264                                 IRQ_TYPE_EDGE_RISING);
 265         }
 266         return IRQ_HANDLED;
 267 }
 268
 269 static void __init
 270 omap_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
 280 static void __init
 281 palmz71_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
 310 static void __init
 311 omap_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
 337 static void __init
 338 omap_palmz71_map_io(void)
 339 {
 340         omap1_map_common_io();
 341 }
 342
 343 MACHINE_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,
 350 MACHINE_END