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 <mach/flash.h>
  40 #include <mach/mux.h>
  41 #include <plat-omap/dma-omap.h>
  42 #include <mach/tc.h>
  43 #include <mach/irda.h>
  44 #include <linux/platform_data/keypad-omap.h>
  45
  46 #include <mach/hardware.h>
  47 #include <mach/usb.h>
  48
  49 #include "common.h"
  50 #include "dma.h"
  51
  52 #define PALMZ71_USBDETECT_GPIO  0
  53 #define PALMZ71_PENIRQ_GPIO     6
  54 #define PALMZ71_MMC_WP_GPIO     8
  55 #define PALMZ71_HDQ_GPIO        11
  56
  57 #define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
  58 #define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
  59 #define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
  60 #define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
  61
  62 static const unsigned int palmz71_keymap[] = {
  63         KEY(0, 0, KEY_F1),
  64         KEY(1, 0, KEY_F2),
  65         KEY(2, 0, KEY_F3),
  66         KEY(3, 0, KEY_F4),
  67         KEY(4, 0, KEY_POWER),
  68         KEY(0, 1, KEY_LEFT),
  69         KEY(1, 1, KEY_DOWN),
  70         KEY(2, 1, KEY_UP),
  71         KEY(3, 1, KEY_RIGHT),
  72         KEY(4, 1, KEY_ENTER),
  73         KEY(0, 2, KEY_CAMERA),
  74 };
  75
  76 static const struct matrix_keymap_data palmz71_keymap_data = {
  77         .keymap         = palmz71_keymap,
  78         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  79 };
  80
  81 static struct omap_kp_platform_data palmz71_kp_data = {
  82         .rows   = 8,
  83         .cols   = 8,
  84         .keymap_data    = &palmz71_keymap_data,
  85         .rep    = true,
  86         .delay  = 80,
  87 };
  88
  89 static struct resource palmz71_kp_resources[] = {
  90         [0] = {
  91                 .start  = INT_KEYBOARD,
  92                 .end    = INT_KEYBOARD,
  93                 .flags  = IORESOURCE_IRQ,
  94         },
  95 };
  96
  97 static struct platform_device palmz71_kp_device = {
  98         .name   = "omap-keypad",
  99         .id     = -1,
 100         .dev    = {
 101                 .platform_data = &palmz71_kp_data,
 102         },
 103         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 104         .resource       = palmz71_kp_resources,
 105 };
 106
 107 static struct mtd_partition palmz71_rom_partitions[] = {
 108         /* PalmOS "Small ROM", contains the bootloader and the debugger */
 109         {
 110                 .name           = "smallrom",
 111                 .offset         = 0,
 112                 .size           = 0xa000,
 113                 .mask_flags     = MTD_WRITEABLE,
 114         },
 115         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 116         {
 117                 .name   = "bigrom",
 118                 .offset = SZ_128K,
 119                 /*
 120                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 121                  * 0x7b0000 bytes in the English-only ("enUS") version.
 122                  */
 123                 .size           = 0x7b0000,
 124                 .mask_flags     = MTD_WRITEABLE,
 125         },
 126 };
 127
 128 static struct physmap_flash_data palmz71_rom_data = {
 129         .width          = 2,
 130         .set_vpp        = omap1_set_vpp,
 131         .parts          = palmz71_rom_partitions,
 132         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 133 };
 134
 135 static struct resource palmz71_rom_resource = {
 136         .start  = OMAP_CS0_PHYS,
 137         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 138         .flags  = IORESOURCE_MEM,
 139 };
 140
 141 static struct platform_device palmz71_rom_device = {
 142         .name   = "physmap-flash",
 143         .id     = -1,
 144         .dev = {
 145                 .platform_data = &palmz71_rom_data,
 146         },
 147         .num_resources  = 1,
 148         .resource       = &palmz71_rom_resource,
 149 };
 150
 151 static struct platform_device palmz71_lcd_device = {
 152         .name   = "lcd_palmz71",
 153         .id     = -1,
 154 };
 155
 156 static struct omap_irda_config palmz71_irda_config = {
 157         .transceiver_cap        = IR_SIRMODE,
 158         .rx_channel             = OMAP_DMA_UART3_RX,
 159         .tx_channel             = OMAP_DMA_UART3_TX,
 160         .dest_start             = UART3_THR,
 161         .src_start              = UART3_RHR,
 162         .tx_trigger             = 0,
 163         .rx_trigger             = 0,
 164 };
 165
 166 static struct resource palmz71_irda_resources[] = {
 167         [0] = {
 168                 .start  = INT_UART3,
 169                 .end    = INT_UART3,
 170                 .flags  = IORESOURCE_IRQ,
 171         },
 172 };
 173
 174 static struct platform_device palmz71_irda_device = {
 175         .name   = "omapirda",
 176         .id     = -1,
 177         .dev = {
 178                 .platform_data = &palmz71_irda_config,
 179         },
 180         .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 181         .resource       = palmz71_irda_resources,
 182 };
 183
 184 static struct platform_device palmz71_spi_device = {
 185         .name   = "spi_palmz71",
 186         .id     = -1,
 187 };
 188
 189 static struct omap_backlight_config palmz71_backlight_config = {
 190         .default_intensity      = 0xa0,
 191 };
 192
 193 static struct platform_device palmz71_backlight_device = {
 194         .name   = "omap-bl",
 195         .id     = -1,
 196         .dev    = {
 197                 .platform_data = &palmz71_backlight_config,
 198         },
 199 };
 200
 201 static struct platform_device *devices[] __initdata = {
 202         &palmz71_rom_device,
 203         &palmz71_kp_device,
 204         &palmz71_lcd_device,
 205         &palmz71_irda_device,
 206         &palmz71_spi_device,
 207         &palmz71_backlight_device,
 208 };
 209
 210 static int
 211 palmz71_get_pendown_state(void)
 212 {
 213         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 214 }
 215
 216 static const struct ads7846_platform_data palmz71_ts_info = {
 217         .model                  = 7846,
 218         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 219         .x_plate_ohms           = 419,
 220         .y_plate_ohms           = 486,
 221         .get_pendown_state      = palmz71_get_pendown_state,
 222 };
 223
 224 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 225         /* MicroWire (bus 2) CS0 has an ads7846e */
 226         .modalias       = "ads7846",
 227         .platform_data  = &palmz71_ts_info,
 228         .max_speed_hz   = 120000        /* max sample rate at 3V */
 229                                 * 26    /* command + data + overhead */,
 230         .bus_num        = 2,
 231         .chip_select    = 0,
 232 } };
 233
 234 static struct omap_usb_config palmz71_usb_config __initdata = {
 235         .register_dev   = 1,    /* Mini-B only receptacle */
 236         .hmc_mode       = 0,
 237         .pins[0]        = 2,
 238 };
 239
 240 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 241         .ctrl_name = "internal",
 242 };
 243
 244 static irqreturn_t
 245 palmz71_powercable(int irq, void *dev_id)
 246 {
 247         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 248                 printk(KERN_INFO "PM: Power cable connected\n");
 249                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 250                                  IRQ_TYPE_EDGE_FALLING);
 251         } else {
 252                 printk(KERN_INFO "PM: Power cable disconnected\n");
 253                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 254                                  IRQ_TYPE_EDGE_RISING);
 255         }
 256         return IRQ_HANDLED;
 257 }
 258
 259 static void __init
 260 omap_mpu_wdt_mode(int mode)
 261 {
 262         if (mode)
 263                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 264         else {
 265                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 266                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 267         }
 268 }
 269
 270 static void __init
 271 palmz71_gpio_setup(int early)
 272 {
 273         if (early) {
 274                 /* Only set GPIO1 so we have a working serial */
 275                 gpio_direction_output(1, 1);
 276         } else {
 277                 /* Set MMC/SD host WP pin as input */
 278                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 279                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
 280                         return;
 281                 }
 282                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 283
 284                 /* Monitor the Power-cable-connected signal */
 285                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 286                         printk(KERN_ERR
 287                                 "Could not reserve cable signal GPIO!\n");
 288                         return;
 289                 }
 290                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 291                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 292                                 palmz71_powercable, 0, "palmz71-cable", NULL))
 293                         printk(KERN_ERR
 294                                         "IRQ request for power cable failed!\n");
 295                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
 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         .init_irq       = omap1_init_irq,
 331         .init_machine   = omap_palmz71_init,
 332         .init_late      = omap1_init_late,
 333         .timer          = &omap1_timer,
 334         .restart        = omap1_restart,
 335 MACHINE_END