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
  31 #include <mach/hardware.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35
  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
  46 #include <linux/spi/spi.h>
  47 #include <linux/spi/ads7846.h>
  48
  49 #define PALMZ71_USBDETECT_GPIO  0
  50 #define PALMZ71_PENIRQ_GPIO     6
  51 #define PALMZ71_MMC_WP_GPIO     8
  52 #define PALMZ71_HDQ_GPIO        11
  53
  54 #define PALMZ71_HOTSYNC_GPIO    OMAP_MPUIO(1)
  55 #define PALMZ71_CABLE_GPIO      OMAP_MPUIO(2)
  56 #define PALMZ71_SLIDER_GPIO     OMAP_MPUIO(3)
  57 #define PALMZ71_MMC_IN_GPIO     OMAP_MPUIO(4)
  58
  59 static const unsigned int palmz71_keymap[] = {
  60         KEY(0, 0, KEY_F1),
  61         KEY(1, 0, KEY_F2),
  62         KEY(2, 0, KEY_F3),
  63         KEY(3, 0, KEY_F4),
  64         KEY(4, 0, KEY_POWER),
  65         KEY(0, 1, KEY_LEFT),
  66         KEY(1, 1, KEY_DOWN),
  67         KEY(2, 1, KEY_UP),
  68         KEY(3, 1, KEY_RIGHT),
  69         KEY(4, 1, KEY_ENTER),
  70         KEY(0, 2, KEY_CAMERA),
  71 };
  72
  73 static const struct matrix_keymap_data palmz71_keymap_data = {
  74         .keymap         = palmz71_keymap,
  75         .keymap_size    = ARRAY_SIZE(palmz71_keymap),
  76 };
  77
  78 static struct omap_kp_platform_data palmz71_kp_data = {
  79         .rows   = 8,
  80         .cols   = 8,
  81         .keymap_data    = &palmz71_keymap_data,
  82         .rep    = true,
  83         .delay  = 80,
  84 };
  85
  86 static struct resource palmz71_kp_resources[] = {
  87         [0] = {
  88                 .start  = INT_KEYBOARD,
  89                 .end    = INT_KEYBOARD,
  90                 .flags  = IORESOURCE_IRQ,
  91         },
  92 };
  93
  94 static struct platform_device palmz71_kp_device = {
  95         .name   = "omap-keypad",
  96         .id     = -1,
  97         .dev    = {
  98                 .platform_data = &palmz71_kp_data,
  99         },
 100         .num_resources  = ARRAY_SIZE(palmz71_kp_resources),
 101         .resource       = palmz71_kp_resources,
 102 };
 103
 104 static struct mtd_partition palmz71_rom_partitions[] = {
 105         /* PalmOS "Small ROM", contains the bootloader and the debugger */
 106         {
 107                 .name           = "smallrom",
 108                 .offset         = 0,
 109                 .size           = 0xa000,
 110                 .mask_flags     = MTD_WRITEABLE,
 111         },
 112         /* PalmOS "Big ROM", a filesystem with all the OS code and data */
 113         {
 114                 .name   = "bigrom",
 115                 .offset = SZ_128K,
 116                 /*
 117                  * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
 118                  * 0x7b0000 bytes in the English-only ("enUS") version.
 119                  */
 120                 .size           = 0x7b0000,
 121                 .mask_flags     = MTD_WRITEABLE,
 122         },
 123 };
 124
 125 static struct physmap_flash_data palmz71_rom_data = {
 126         .width          = 2,
 127         .set_vpp        = omap1_set_vpp,
 128         .parts          = palmz71_rom_partitions,
 129         .nr_parts       = ARRAY_SIZE(palmz71_rom_partitions),
 130 };
 131
 132 static struct resource palmz71_rom_resource = {
 133         .start  = OMAP_CS0_PHYS,
 134         .end    = OMAP_CS0_PHYS + SZ_8M - 1,
 135         .flags  = IORESOURCE_MEM,
 136 };
 137
 138 static struct platform_device palmz71_rom_device = {
 139         .name   = "physmap-flash",
 140         .id     = -1,
 141         .dev = {
 142                 .platform_data = &palmz71_rom_data,
 143         },
 144         .num_resources  = 1,
 145         .resource       = &palmz71_rom_resource,
 146 };
 147
 148 static struct platform_device palmz71_lcd_device = {
 149         .name   = "lcd_palmz71",
 150         .id     = -1,
 151 };
 152
 153 static struct omap_irda_config palmz71_irda_config = {
 154         .transceiver_cap        = IR_SIRMODE,
 155         .rx_channel             = OMAP_DMA_UART3_RX,
 156         .tx_channel             = OMAP_DMA_UART3_TX,
 157         .dest_start             = UART3_THR,
 158         .src_start              = UART3_RHR,
 159         .tx_trigger             = 0,
 160         .rx_trigger             = 0,
 161 };
 162
 163 static struct resource palmz71_irda_resources[] = {
 164         [0] = {
 165                 .start  = INT_UART3,
 166                 .end    = INT_UART3,
 167                 .flags  = IORESOURCE_IRQ,
 168         },
 169 };
 170
 171 static struct platform_device palmz71_irda_device = {
 172         .name   = "omapirda",
 173         .id     = -1,
 174         .dev = {
 175                 .platform_data = &palmz71_irda_config,
 176         },
 177         .num_resources  = ARRAY_SIZE(palmz71_irda_resources),
 178         .resource       = palmz71_irda_resources,
 179 };
 180
 181 static struct platform_device palmz71_spi_device = {
 182         .name   = "spi_palmz71",
 183         .id     = -1,
 184 };
 185
 186 static struct omap_backlight_config palmz71_backlight_config = {
 187         .default_intensity      = 0xa0,
 188 };
 189
 190 static struct platform_device palmz71_backlight_device = {
 191         .name   = "omap-bl",
 192         .id     = -1,
 193         .dev    = {
 194                 .platform_data = &palmz71_backlight_config,
 195         },
 196 };
 197
 198 static struct platform_device *devices[] __initdata = {
 199         &palmz71_rom_device,
 200         &palmz71_kp_device,
 201         &palmz71_lcd_device,
 202         &palmz71_irda_device,
 203         &palmz71_spi_device,
 204         &palmz71_backlight_device,
 205 };
 206
 207 static int
 208 palmz71_get_pendown_state(void)
 209 {
 210         return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
 211 }
 212
 213 static const struct ads7846_platform_data palmz71_ts_info = {
 214         .model                  = 7846,
 215         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 216         .x_plate_ohms           = 419,
 217         .y_plate_ohms           = 486,
 218         .get_pendown_state      = palmz71_get_pendown_state,
 219 };
 220
 221 static struct spi_board_info __initdata palmz71_boardinfo[] = { {
 222         /* MicroWire (bus 2) CS0 has an ads7846e */
 223         .modalias       = "ads7846",
 224         .platform_data  = &palmz71_ts_info,
 225         .irq            = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
 226         .max_speed_hz   = 120000        /* max sample rate at 3V */
 227                                 * 26    /* command + data + overhead */,
 228         .bus_num        = 2,
 229         .chip_select    = 0,
 230 } };
 231
 232 static struct omap_usb_config palmz71_usb_config __initdata = {
 233         .register_dev   = 1,    /* Mini-B only receptacle */
 234         .hmc_mode       = 0,
 235         .pins[0]        = 2,
 236 };
 237
 238 static struct omap_lcd_config palmz71_lcd_config __initdata = {
 239         .ctrl_name = "internal",
 240 };
 241
 242 static struct omap_board_config_kernel palmz71_config[] __initdata = {
 243         {OMAP_TAG_LCD,  &palmz71_lcd_config},
 244 };
 245
 246 static irqreturn_t
 247 palmz71_powercable(int irq, void *dev_id)
 248 {
 249         if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
 250                 printk(KERN_INFO "PM: Power cable connected\n");
 251                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 252                                  IRQ_TYPE_EDGE_FALLING);
 253         } else {
 254                 printk(KERN_INFO "PM: Power cable disconnected\n");
 255                 irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 256                                  IRQ_TYPE_EDGE_RISING);
 257         }
 258         return IRQ_HANDLED;
 259 }
 260
 261 static void __init
 262 omap_mpu_wdt_mode(int mode)
 263 {
 264         if (mode)
 265                 omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
 266         else {
 267                 omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
 268                 omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
 269         }
 270 }
 271
 272 static void __init
 273 palmz71_gpio_setup(int early)
 274 {
 275         if (early) {
 276                 /* Only set GPIO1 so we have a working serial */
 277                 gpio_direction_output(1, 1);
 278         } else {
 279                 /* Set MMC/SD host WP pin as input */
 280                 if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
 281                         printk(KERN_ERR "Could not reserve WP GPIO!\n");
 282                         return;
 283                 }
 284                 gpio_direction_input(PALMZ71_MMC_WP_GPIO);
 285
 286                 /* Monitor the Power-cable-connected signal */
 287                 if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
 288                         printk(KERN_ERR
 289                                 "Could not reserve cable signal GPIO!\n");
 290                         return;
 291                 }
 292                 gpio_direction_input(PALMZ71_USBDETECT_GPIO);
 293                 if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
 294                                 palmz71_powercable, IRQF_SAMPLE_RANDOM,
 295                                 "palmz71-cable", 0))
 296                         printk(KERN_ERR
 297                                         "IRQ request for power cable failed!\n");
 298                 palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
 299         }
 300 }
 301
 302 static void __init
 303 omap_palmz71_init(void)
 304 {
 305         /* mux pins for uarts */
 306         omap_cfg_reg(UART1_TX);
 307         omap_cfg_reg(UART1_RTS);
 308         omap_cfg_reg(UART2_TX);
 309         omap_cfg_reg(UART2_RTS);
 310         omap_cfg_reg(UART3_TX);
 311         omap_cfg_reg(UART3_RX);
 312
 313         palmz71_gpio_setup(1);
 314         omap_mpu_wdt_mode(0);
 315
 316         omap_board_config = palmz71_config;
 317         omap_board_config_size = ARRAY_SIZE(palmz71_config);
 318
 319         platform_add_devices(devices, ARRAY_SIZE(devices));
 320
 321         spi_register_board_info(palmz71_boardinfo,
 322                                 ARRAY_SIZE(palmz71_boardinfo));
 323         omap1_usb_init(&palmz71_usb_config);
 324         omap_serial_init();
 325         omap_register_i2c_bus(1, 100, NULL, 0);
 326         palmz71_gpio_setup(0);
 327 }
 328
 329 MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
 330         .atag_offset    = 0x100,
 331         .map_io         = omap15xx_map_io,
 332         .init_early     = omap1_init_early,
 333         .reserve        = omap_reserve,
 334         .init_irq       = omap1_init_irq,
 335         .init_machine   = omap_palmz71_init,
 336         .timer          = &omap1_timer,
 337 MACHINE_END