arch/arm/mach-omap2/board-h4.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-h4.c
   3  *
   4  * Copyright (C) 2005 Nokia Corporation
   5  * Author: Paul Mundt <paul.mundt@nokia.com>
   6  *
   7  * Modified from mach-omap/omap1/board-generic.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/partitions.h>
  19 #include <linux/delay.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/i2c.h>
  22 #include <linux/i2c/at24.h>
  23 #include <linux/input.h>
  24 #include <linux/err.h>
  25 #include <linux/clk.h>
  26 #include <linux/io.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/flash.h>
  33
  34 #include <mach/control.h>
  35 #include <mach/gpio.h>
  36 #include <mach/gpioexpander.h>
  37 #include <mach/mux.h>
  38 #include <mach/usb.h>
  39 #include <mach/irda.h>
  40 #include <mach/board.h>
  41 #include <mach/common.h>
  42 #include <mach/keypad.h>
  43 #include <mach/menelaus.h>
  44 #include <mach/dma.h>
  45 #include <mach/gpmc.h>
  46
  47 #define H4_FLASH_CS     0
  48 #define H4_SMC91X_CS    1
  49
  50 #define H4_ETHR_GPIO_IRQ                92
  51
  52 static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
  53 static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
  54
  55 static int h4_keymap[] = {
  56         KEY(0, 0, KEY_LEFT),
  57         KEY(0, 1, KEY_RIGHT),
  58         KEY(0, 2, KEY_A),
  59         KEY(0, 3, KEY_B),
  60         KEY(0, 4, KEY_C),
  61         KEY(1, 0, KEY_DOWN),
  62         KEY(1, 1, KEY_UP),
  63         KEY(1, 2, KEY_E),
  64         KEY(1, 3, KEY_F),
  65         KEY(1, 4, KEY_G),
  66         KEY(2, 0, KEY_ENTER),
  67         KEY(2, 1, KEY_I),
  68         KEY(2, 2, KEY_J),
  69         KEY(2, 3, KEY_K),
  70         KEY(2, 4, KEY_3),
  71         KEY(3, 0, KEY_M),
  72         KEY(3, 1, KEY_N),
  73         KEY(3, 2, KEY_O),
  74         KEY(3, 3, KEY_P),
  75         KEY(3, 4, KEY_Q),
  76         KEY(4, 0, KEY_R),
  77         KEY(4, 1, KEY_4),
  78         KEY(4, 2, KEY_T),
  79         KEY(4, 3, KEY_U),
  80         KEY(4, 4, KEY_ENTER),
  81         KEY(5, 0, KEY_V),
  82         KEY(5, 1, KEY_W),
  83         KEY(5, 2, KEY_L),
  84         KEY(5, 3, KEY_S),
  85         KEY(5, 4, KEY_ENTER),
  86         0
  87 };
  88
  89 static struct mtd_partition h4_partitions[] = {
  90         /* bootloader (U-Boot, etc) in first sector */
  91         {
  92               .name             = "bootloader",
  93               .offset           = 0,
  94               .size             = SZ_128K,
  95               .mask_flags       = MTD_WRITEABLE, /* force read-only */
  96         },
  97         /* bootloader params in the next sector */
  98         {
  99               .name             = "params",
 100               .offset           = MTDPART_OFS_APPEND,
 101               .size             = SZ_128K,
 102               .mask_flags       = 0,
 103         },
 104         /* kernel */
 105         {
 106               .name             = "kernel",
 107               .offset           = MTDPART_OFS_APPEND,
 108               .size             = SZ_2M,
 109               .mask_flags       = 0
 110         },
 111         /* file system */
 112         {
 113               .name             = "filesystem",
 114               .offset           = MTDPART_OFS_APPEND,
 115               .size             = MTDPART_SIZ_FULL,
 116               .mask_flags       = 0
 117         }
 118 };
 119
 120 static struct flash_platform_data h4_flash_data = {
 121         .map_name       = "cfi_probe",
 122         .width          = 2,
 123         .parts          = h4_partitions,
 124         .nr_parts       = ARRAY_SIZE(h4_partitions),
 125 };
 126
 127 static struct resource h4_flash_resource = {
 128         .flags          = IORESOURCE_MEM,
 129 };
 130
 131 static struct platform_device h4_flash_device = {
 132         .name           = "omapflash",
 133         .id             = 0,
 134         .dev            = {
 135                 .platform_data  = &h4_flash_data,
 136         },
 137         .num_resources  = 1,
 138         .resource       = &h4_flash_resource,
 139 };
 140
 141 /* Select between the IrDA and aGPS module
 142  */
 143 static int h4_select_irda(struct device *dev, int state)
 144 {
 145         unsigned char expa;
 146         int err = 0;
 147
 148         if ((err = read_gpio_expa(&expa, 0x21))) {
 149                 printk(KERN_ERR "Error reading from I/O expander\n");
 150                 return err;
 151         }
 152
 153         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
 154         if (state & IR_SEL) {   /* IrDa */
 155                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
 156                         printk(KERN_ERR "Error writing to I/O expander\n");
 157                         return err;
 158                 }
 159         } else {
 160                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
 161                         printk(KERN_ERR "Error writing to I/O expander\n");
 162                         return err;
 163                 }
 164         }
 165         return err;
 166 }
 167
 168 static void set_trans_mode(struct work_struct *work)
 169 {
 170         struct omap_irda_config *irda_config =
 171                 container_of(work, struct omap_irda_config, gpio_expa.work);
 172         int mode = irda_config->mode;
 173         unsigned char expa;
 174         int err = 0;
 175
 176         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
 177                 printk(KERN_ERR "Error reading from I/O expander\n");
 178         }
 179
 180         expa &= ~0x01;
 181
 182         if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
 183                 expa |= 0x01;
 184         }
 185
 186         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
 187                 printk(KERN_ERR "Error writing to I/O expander\n");
 188         }
 189 }
 190
 191 static int h4_transceiver_mode(struct device *dev, int mode)
 192 {
 193         struct omap_irda_config *irda_config = dev->platform_data;
 194
 195         irda_config->mode = mode;
 196         cancel_delayed_work(&irda_config->gpio_expa);
 197         PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
 198         schedule_delayed_work(&irda_config->gpio_expa, 0);
 199
 200         return 0;
 201 }
 202
 203 static struct omap_irda_config h4_irda_data = {
 204         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
 205         .transceiver_mode       = h4_transceiver_mode,
 206         .select_irda            = h4_select_irda,
 207         .rx_channel             = OMAP24XX_DMA_UART3_RX,
 208         .tx_channel             = OMAP24XX_DMA_UART3_TX,
 209         .dest_start             = OMAP_UART3_BASE,
 210         .src_start              = OMAP_UART3_BASE,
 211         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
 212         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
 213 };
 214
 215 static struct resource h4_irda_resources[] = {
 216         [0] = {
 217                 .start  = INT_24XX_UART3_IRQ,
 218                 .end    = INT_24XX_UART3_IRQ,
 219                 .flags  = IORESOURCE_IRQ,
 220         },
 221 };
 222
 223 static struct platform_device h4_irda_device = {
 224         .name           = "omapirda",
 225         .id             = -1,
 226         .dev            = {
 227                 .platform_data  = &h4_irda_data,
 228         },
 229         .num_resources  = 1,
 230         .resource       = h4_irda_resources,
 231 };
 232
 233 static struct omap_kp_platform_data h4_kp_data = {
 234         .rows           = 6,
 235         .cols           = 7,
 236         .keymap         = h4_keymap,
 237         .keymapsize     = ARRAY_SIZE(h4_keymap),
 238         .rep            = 1,
 239         .row_gpios      = row_gpios,
 240         .col_gpios      = col_gpios,
 241 };
 242
 243 static struct platform_device h4_kp_device = {
 244         .name           = "omap-keypad",
 245         .id             = -1,
 246         .dev            = {
 247                 .platform_data = &h4_kp_data,
 248         },
 249 };
 250
 251 static struct platform_device h4_lcd_device = {
 252         .name           = "lcd_h4",
 253         .id             = -1,
 254 };
 255
 256 static struct platform_device *h4_devices[] __initdata = {
 257         &h4_flash_device,
 258         &h4_irda_device,
 259         &h4_kp_device,
 260         &h4_lcd_device,
 261 };
 262
 263 /* 2420 Sysboot setup (2430 is different) */
 264 static u32 get_sysboot_value(void)
 265 {
 266         return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
 267                 (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
 268                  OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
 269                  OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
 270 }
 271
 272 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 273  *
 274  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 275  *  correctly.  The macro needs to look at production_id not just hawkeye.
 276  */
 277 static u32 is_gpmc_muxed(void)
 278 {
 279         u32 mux;
 280         mux = get_sysboot_value();
 281         if ((mux & 0xF) == 0xd)
 282                 return 1;       /* NAND config (could be either) */
 283         if (mux & 0x2)          /* if mux'ed */
 284                 return 1;
 285         else
 286                 return 0;
 287 }
 288
 289 static inline void __init h4_init_debug(void)
 290 {
 291         int eth_cs;
 292         unsigned long cs_mem_base;
 293         unsigned int muxed, rate;
 294         struct clk *gpmc_fck;
 295
 296         eth_cs  = H4_SMC91X_CS;
 297
 298         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 299         if (IS_ERR(gpmc_fck)) {
 300                 WARN_ON(1);
 301                 return;
 302         }
 303
 304         clk_enable(gpmc_fck);
 305         rate = clk_get_rate(gpmc_fck);
 306         clk_disable(gpmc_fck);
 307         clk_put(gpmc_fck);
 308
 309         if (is_gpmc_muxed())
 310                 muxed = 0x200;
 311         else
 312                 muxed = 0;
 313
 314         /* Make sure CS1 timings are correct */
 315         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 316                           0x00011000 | muxed);
 317
 318         if (rate >= 160000000) {
 319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 320                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 321                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 322                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 324         } else if (rate >= 130000000) {
 325                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 326                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 327                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 328                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 329                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 330         } else {/* rate = 100000000 */
 331                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 333                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 334                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 335                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 336         }
 337
 338         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 339                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 340                 goto out;
 341         }
 342
 343         udelay(100);
 344
 345         omap_cfg_reg(M15_24XX_GPIO92);
 346         if (debug_card_init(cs_mem_base, H4_ETHR_GPIO_IRQ) < 0)
 347                 gpmc_cs_free(eth_cs);
 348
 349 out:
 350         clk_disable(gpmc_fck);
 351         clk_put(gpmc_fck);
 352 }
 353
 354 static void __init h4_init_flash(void)
 355 {
 356         unsigned long base;
 357
 358         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
 359                 printk("Can't request GPMC CS for flash\n");
 360                 return;
 361         }
 362         h4_flash_resource.start = base;
 363         h4_flash_resource.end   = base + SZ_64M - 1;
 364 }
 365
 366 static void __init omap_h4_init_irq(void)
 367 {
 368         omap2_init_common_hw(NULL);
 369         omap_init_irq();
 370         omap_gpio_init();
 371         h4_init_flash();
 372 }
 373
 374 static struct omap_uart_config h4_uart_config __initdata = {
 375         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 376 };
 377
 378 static struct omap_lcd_config h4_lcd_config __initdata = {
 379         .ctrl_name      = "internal",
 380 };
 381
 382 static struct omap_usb_config h4_usb_config __initdata = {
 383 #ifdef  CONFIG_MACH_OMAP2_H4_USB1
 384         /* NOTE:  usb1 could also be used with 3 wire signaling */
 385         .pins[1]        = 4,
 386 #endif
 387
 388 #ifdef  CONFIG_MACH_OMAP_H4_OTG
 389         /* S1.10 ON -- USB OTG port
 390          * usb0 switched to Mini-AB port and isp1301 transceiver;
 391          * S2.POS3 = OFF, S2.POS4 = ON ... to allow battery charging
 392          */
 393         .otg            = 1,
 394         .pins[0]        = 4,
 395 #ifdef  CONFIG_USB_GADGET_OMAP
 396         /* use OTG cable, or standard A-to-MiniB */
 397         .hmc_mode       = 0x14, /* 0:dev/otg 1:host 2:disable */
 398 #elif   defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 399         /* use OTG cable, or NONSTANDARD (B-to-MiniB) */
 400         .hmc_mode       = 0x11, /* 0:host 1:host 2:disable */
 401 #endif  /* XX */
 402
 403 #else
 404         /* S1.10 OFF -- usb "download port"
 405          * usb0 switched to Mini-B port and isp1105 transceiver;
 406          * S2.POS3 = ON, S2.POS4 = OFF ... to enable battery charging
 407          */
 408         .register_dev   = 1,
 409         .pins[0]        = 3,
 410 /*      .hmc_mode       = 0x14,*/       /* 0:dev 1:host 2:disable */
 411         .hmc_mode       = 0x00,         /* 0:dev|otg 1:disable 2:disable */
 412 #endif
 413 };
 414
 415 static struct omap_board_config_kernel h4_config[] = {
 416         { OMAP_TAG_UART,        &h4_uart_config },
 417         { OMAP_TAG_LCD,         &h4_lcd_config },
 418 };
 419
 420 static struct at24_platform_data m24c01 = {
 421         .byte_len       = SZ_1K / 8,
 422         .page_size      = 16,
 423 };
 424
 425 static struct i2c_board_info __initdata h4_i2c_board_info[] = {
 426         {
 427                 I2C_BOARD_INFO("isp1301_omap", 0x2d),
 428                 .irq            = OMAP_GPIO_IRQ(125),
 429         },
 430         {       /* EEPROM on mainboard */
 431                 I2C_BOARD_INFO("24c01", 0x52),
 432                 .platform_data  = &m24c01,
 433         },
 434         {       /* EEPROM on cpu card */
 435                 I2C_BOARD_INFO("24c01", 0x57),
 436                 .platform_data  = &m24c01,
 437         },
 438 };
 439
 440 static void __init omap_h4_init(void)
 441 {
 442         /*
 443          * Make sure the serial ports are muxed on at this point.
 444          * You have to mux them off in device drivers later on
 445          * if not needed.
 446          */
 447 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 448         omap_cfg_reg(K15_24XX_UART3_TX);
 449         omap_cfg_reg(K14_24XX_UART3_RX);
 450 #endif
 451
 452 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 453         if (omap_has_menelaus()) {
 454                 row_gpios[5] = 0;
 455                 col_gpios[2] = 15;
 456                 col_gpios[6] = 18;
 457         }
 458 #endif
 459
 460         i2c_register_board_info(1, h4_i2c_board_info,
 461                         ARRAY_SIZE(h4_i2c_board_info));
 462
 463         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 464         omap_board_config = h4_config;
 465         omap_board_config_size = ARRAY_SIZE(h4_config);
 466         omap_usb_init(&h4_usb_config);
 467         omap_serial_init();
 468 }
 469
 470 static void __init omap_h4_map_io(void)
 471 {
 472         omap2_set_globals_242x();
 473         omap2_map_common_io();
 474 }
 475
 476 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 477         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 478         .phys_io        = 0x48000000,
 479         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 480         .boot_params    = 0x80000100,
 481         .map_io         = omap_h4_map_io,
 482         .init_irq       = omap_h4_init_irq,
 483         .init_machine   = omap_h4_init,
 484         .timer          = &omap_timer,
 485 MACHINE_END