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/input.h>
  22 #include <linux/err.h>
  23 #include <linux/clk.h>
  24
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/flash.h>
  30
  31 #include <mach/control.h>
  32 #include <mach/gpio.h>
  33 #include <mach/gpioexpander.h>
  34 #include <mach/mux.h>
  35 #include <mach/usb.h>
  36 #include <mach/irda.h>
  37 #include <mach/board.h>
  38 #include <mach/common.h>
  39 #include <mach/keypad.h>
  40 #include <mach/menelaus.h>
  41 #include <mach/dma.h>
  42 #include <mach/gpmc.h>
  43
  44 #include <asm/io.h>
  45
  46 #define H4_FLASH_CS     0
  47 #define H4_SMC91X_CS    1
  48
  49 static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
  50 static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
  51
  52 static int h4_keymap[] = {
  53         KEY(0, 0, KEY_LEFT),
  54         KEY(0, 1, KEY_RIGHT),
  55         KEY(0, 2, KEY_A),
  56         KEY(0, 3, KEY_B),
  57         KEY(0, 4, KEY_C),
  58         KEY(1, 0, KEY_DOWN),
  59         KEY(1, 1, KEY_UP),
  60         KEY(1, 2, KEY_E),
  61         KEY(1, 3, KEY_F),
  62         KEY(1, 4, KEY_G),
  63         KEY(2, 0, KEY_ENTER),
  64         KEY(2, 1, KEY_I),
  65         KEY(2, 2, KEY_J),
  66         KEY(2, 3, KEY_K),
  67         KEY(2, 4, KEY_3),
  68         KEY(3, 0, KEY_M),
  69         KEY(3, 1, KEY_N),
  70         KEY(3, 2, KEY_O),
  71         KEY(3, 3, KEY_P),
  72         KEY(3, 4, KEY_Q),
  73         KEY(4, 0, KEY_R),
  74         KEY(4, 1, KEY_4),
  75         KEY(4, 2, KEY_T),
  76         KEY(4, 3, KEY_U),
  77         KEY(4, 4, KEY_ENTER),
  78         KEY(5, 0, KEY_V),
  79         KEY(5, 1, KEY_W),
  80         KEY(5, 2, KEY_L),
  81         KEY(5, 3, KEY_S),
  82         KEY(5, 4, KEY_ENTER),
  83         0
  84 };
  85
  86 static struct mtd_partition h4_partitions[] = {
  87         /* bootloader (U-Boot, etc) in first sector */
  88         {
  89               .name             = "bootloader",
  90               .offset           = 0,
  91               .size             = SZ_128K,
  92               .mask_flags       = MTD_WRITEABLE, /* force read-only */
  93         },
  94         /* bootloader params in the next sector */
  95         {
  96               .name             = "params",
  97               .offset           = MTDPART_OFS_APPEND,
  98               .size             = SZ_128K,
  99               .mask_flags       = 0,
 100         },
 101         /* kernel */
 102         {
 103               .name             = "kernel",
 104               .offset           = MTDPART_OFS_APPEND,
 105               .size             = SZ_2M,
 106               .mask_flags       = 0
 107         },
 108         /* file system */
 109         {
 110               .name             = "filesystem",
 111               .offset           = MTDPART_OFS_APPEND,
 112               .size             = MTDPART_SIZ_FULL,
 113               .mask_flags       = 0
 114         }
 115 };
 116
 117 static struct flash_platform_data h4_flash_data = {
 118         .map_name       = "cfi_probe",
 119         .width          = 2,
 120         .parts          = h4_partitions,
 121         .nr_parts       = ARRAY_SIZE(h4_partitions),
 122 };
 123
 124 static struct resource h4_flash_resource = {
 125         .flags          = IORESOURCE_MEM,
 126 };
 127
 128 static struct platform_device h4_flash_device = {
 129         .name           = "omapflash",
 130         .id             = 0,
 131         .dev            = {
 132                 .platform_data  = &h4_flash_data,
 133         },
 134         .num_resources  = 1,
 135         .resource       = &h4_flash_resource,
 136 };
 137
 138 /* Select between the IrDA and aGPS module
 139  */
 140 static int h4_select_irda(struct device *dev, int state)
 141 {
 142         unsigned char expa;
 143         int err = 0;
 144
 145         if ((err = read_gpio_expa(&expa, 0x21))) {
 146                 printk(KERN_ERR "Error reading from I/O expander\n");
 147                 return err;
 148         }
 149
 150         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
 151         if (state & IR_SEL) {   /* IrDa */
 152                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
 153                         printk(KERN_ERR "Error writing to I/O expander\n");
 154                         return err;
 155                 }
 156         } else {
 157                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
 158                         printk(KERN_ERR "Error writing to I/O expander\n");
 159                         return err;
 160                 }
 161         }
 162         return err;
 163 }
 164
 165 static void set_trans_mode(struct work_struct *work)
 166 {
 167         struct omap_irda_config *irda_config =
 168                 container_of(work, struct omap_irda_config, gpio_expa.work);
 169         int mode = irda_config->mode;
 170         unsigned char expa;
 171         int err = 0;
 172
 173         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
 174                 printk(KERN_ERR "Error reading from I/O expander\n");
 175         }
 176
 177         expa &= ~0x01;
 178
 179         if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
 180                 expa |= 0x01;
 181         }
 182
 183         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
 184                 printk(KERN_ERR "Error writing to I/O expander\n");
 185         }
 186 }
 187
 188 static int h4_transceiver_mode(struct device *dev, int mode)
 189 {
 190         struct omap_irda_config *irda_config = dev->platform_data;
 191
 192         irda_config->mode = mode;
 193         cancel_delayed_work(&irda_config->gpio_expa);
 194         PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
 195         schedule_delayed_work(&irda_config->gpio_expa, 0);
 196
 197         return 0;
 198 }
 199
 200 static struct omap_irda_config h4_irda_data = {
 201         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
 202         .transceiver_mode       = h4_transceiver_mode,
 203         .select_irda            = h4_select_irda,
 204         .rx_channel             = OMAP24XX_DMA_UART3_RX,
 205         .tx_channel             = OMAP24XX_DMA_UART3_TX,
 206         .dest_start             = OMAP_UART3_BASE,
 207         .src_start              = OMAP_UART3_BASE,
 208         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
 209         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
 210 };
 211
 212 static struct resource h4_irda_resources[] = {
 213         [0] = {
 214                 .start  = INT_24XX_UART3_IRQ,
 215                 .end    = INT_24XX_UART3_IRQ,
 216                 .flags  = IORESOURCE_IRQ,
 217         },
 218 };
 219
 220 static struct platform_device h4_irda_device = {
 221         .name           = "omapirda",
 222         .id             = -1,
 223         .dev            = {
 224                 .platform_data  = &h4_irda_data,
 225         },
 226         .num_resources  = 1,
 227         .resource       = h4_irda_resources,
 228 };
 229
 230 static struct omap_kp_platform_data h4_kp_data = {
 231         .rows           = 6,
 232         .cols           = 7,
 233         .keymap         = h4_keymap,
 234         .keymapsize     = ARRAY_SIZE(h4_keymap),
 235         .rep            = 1,
 236         .row_gpios      = row_gpios,
 237         .col_gpios      = col_gpios,
 238 };
 239
 240 static struct platform_device h4_kp_device = {
 241         .name           = "omap-keypad",
 242         .id             = -1,
 243         .dev            = {
 244                 .platform_data = &h4_kp_data,
 245         },
 246 };
 247
 248 static struct platform_device h4_lcd_device = {
 249         .name           = "lcd_h4",
 250         .id             = -1,
 251 };
 252
 253 static struct platform_device *h4_devices[] __initdata = {
 254         &h4_flash_device,
 255         &h4_irda_device,
 256         &h4_kp_device,
 257         &h4_lcd_device,
 258 };
 259
 260 /* 2420 Sysboot setup (2430 is different) */
 261 static u32 get_sysboot_value(void)
 262 {
 263         return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
 264                 (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
 265                  OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
 266                  OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
 267 }
 268
 269 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 270  *
 271  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 272  *  correctly.  The macro needs to look at production_id not just hawkeye.
 273  */
 274 static u32 is_gpmc_muxed(void)
 275 {
 276         u32 mux;
 277         mux = get_sysboot_value();
 278         if ((mux & 0xF) == 0xd)
 279                 return 1;       /* NAND config (could be either) */
 280         if (mux & 0x2)          /* if mux'ed */
 281                 return 1;
 282         else
 283                 return 0;
 284 }
 285
 286 static inline void __init h4_init_debug(void)
 287 {
 288         int eth_cs;
 289         unsigned long cs_mem_base;
 290         unsigned int muxed, rate;
 291         struct clk *gpmc_fck;
 292
 293         eth_cs  = H4_SMC91X_CS;
 294
 295         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 296         if (IS_ERR(gpmc_fck)) {
 297                 WARN_ON(1);
 298                 return;
 299         }
 300
 301         clk_enable(gpmc_fck);
 302         rate = clk_get_rate(gpmc_fck);
 303         clk_disable(gpmc_fck);
 304         clk_put(gpmc_fck);
 305
 306         if (is_gpmc_muxed())
 307                 muxed = 0x200;
 308         else
 309                 muxed = 0;
 310
 311         /* Make sure CS1 timings are correct */
 312         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 313                           0x00011000 | muxed);
 314
 315         if (rate >= 160000000) {
 316                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 318                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 320                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 321         } else if (rate >= 130000000) {
 322                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 324                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 325                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 326                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 327         } else {/* rate = 100000000 */
 328                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 329                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 330                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 331                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 333         }
 334
 335         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 336                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 337                 goto out;
 338         }
 339
 340         udelay(100);
 341
 342         omap_cfg_reg(M15_24XX_GPIO92);
 343         if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
 344                 gpmc_cs_free(eth_cs);
 345
 346 out:
 347         clk_disable(gpmc_fck);
 348         clk_put(gpmc_fck);
 349 }
 350
 351 static void __init h4_init_flash(void)
 352 {
 353         unsigned long base;
 354
 355         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
 356                 printk("Can't request GPMC CS for flash\n");
 357                 return;
 358         }
 359         h4_flash_resource.start = base;
 360         h4_flash_resource.end   = base + SZ_64M - 1;
 361 }
 362
 363 static void __init omap_h4_init_irq(void)
 364 {
 365         omap2_init_common_hw();
 366         omap_init_irq();
 367         omap_gpio_init();
 368         h4_init_flash();
 369 }
 370
 371 static struct omap_uart_config h4_uart_config __initdata = {
 372         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 373 };
 374
 375 static struct omap_mmc_config h4_mmc_config __initdata = {
 376         .mmc [0] = {
 377                 .enabled        = 1,
 378                 .wire4          = 1,
 379                 .wp_pin         = -1,
 380                 .power_pin      = -1,
 381                 .switch_pin     = -1,
 382         },
 383 };
 384
 385 static struct omap_lcd_config h4_lcd_config __initdata = {
 386         .ctrl_name      = "internal",
 387 };
 388
 389 static struct omap_board_config_kernel h4_config[] = {
 390         { OMAP_TAG_UART,        &h4_uart_config },
 391         { OMAP_TAG_MMC,         &h4_mmc_config },
 392         { OMAP_TAG_LCD,         &h4_lcd_config },
 393 };
 394
 395 static void __init omap_h4_init(void)
 396 {
 397         /*
 398          * Make sure the serial ports are muxed on at this point.
 399          * You have to mux them off in device drivers later on
 400          * if not needed.
 401          */
 402 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 403         omap_cfg_reg(K15_24XX_UART3_TX);
 404         omap_cfg_reg(K14_24XX_UART3_RX);
 405 #endif
 406
 407 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 408         if (omap_has_menelaus()) {
 409                 row_gpios[5] = 0;
 410                 col_gpios[2] = 15;
 411                 col_gpios[6] = 18;
 412         }
 413 #endif
 414
 415         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 416         omap_board_config = h4_config;
 417         omap_board_config_size = ARRAY_SIZE(h4_config);
 418         omap_serial_init();
 419 }
 420
 421 static void __init omap_h4_map_io(void)
 422 {
 423         omap2_set_globals_242x();
 424         omap2_map_common_io();
 425 }
 426
 427 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 428         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 429         .phys_io        = 0x48000000,
 430         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 431         .boot_params    = 0x80000100,
 432         .map_io         = omap_h4_map_io,
 433         .init_irq       = omap_h4_init_irq,
 434         .init_machine   = omap_h4_init,
 435         .timer          = &omap_timer,
 436 MACHINE_END