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