kernel/2.6.29.6-aldebaran-rt/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 static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
  51 static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
  52
  53 static int h4_keymap[] = {
  54         KEY(0, 0, KEY_LEFT),
  55         KEY(0, 1, KEY_RIGHT),
  56         KEY(0, 2, KEY_A),
  57         KEY(0, 3, KEY_B),
  58         KEY(0, 4, KEY_C),
  59         KEY(1, 0, KEY_DOWN),
  60         KEY(1, 1, KEY_UP),
  61         KEY(1, 2, KEY_E),
  62         KEY(1, 3, KEY_F),
  63         KEY(1, 4, KEY_G),
  64         KEY(2, 0, KEY_ENTER),
  65         KEY(2, 1, KEY_I),
  66         KEY(2, 2, KEY_J),
  67         KEY(2, 3, KEY_K),
  68         KEY(2, 4, KEY_3),
  69         KEY(3, 0, KEY_M),
  70         KEY(3, 1, KEY_N),
  71         KEY(3, 2, KEY_O),
  72         KEY(3, 3, KEY_P),
  73         KEY(3, 4, KEY_Q),
  74         KEY(4, 0, KEY_R),
  75         KEY(4, 1, KEY_4),
  76         KEY(4, 2, KEY_T),
  77         KEY(4, 3, KEY_U),
  78         KEY(4, 4, KEY_ENTER),
  79         KEY(5, 0, KEY_V),
  80         KEY(5, 1, KEY_W),
  81         KEY(5, 2, KEY_L),
  82         KEY(5, 3, KEY_S),
  83         KEY(5, 4, KEY_ENTER),
  84         0
  85 };
  86
  87 static struct mtd_partition h4_partitions[] = {
  88         /* bootloader (U-Boot, etc) in first sector */
  89         {
  90               .name             = "bootloader",
  91               .offset           = 0,
  92               .size             = SZ_128K,
  93               .mask_flags       = MTD_WRITEABLE, /* force read-only */
  94         },
  95         /* bootloader params in the next sector */
  96         {
  97               .name             = "params",
  98               .offset           = MTDPART_OFS_APPEND,
  99               .size             = SZ_128K,
 100               .mask_flags       = 0,
 101         },
 102         /* kernel */
 103         {
 104               .name             = "kernel",
 105               .offset           = MTDPART_OFS_APPEND,
 106               .size             = SZ_2M,
 107               .mask_flags       = 0
 108         },
 109         /* file system */
 110         {
 111               .name             = "filesystem",
 112               .offset           = MTDPART_OFS_APPEND,
 113               .size             = MTDPART_SIZ_FULL,
 114               .mask_flags       = 0
 115         }
 116 };
 117
 118 static struct flash_platform_data h4_flash_data = {
 119         .map_name       = "cfi_probe",
 120         .width          = 2,
 121         .parts          = h4_partitions,
 122         .nr_parts       = ARRAY_SIZE(h4_partitions),
 123 };
 124
 125 static struct resource h4_flash_resource = {
 126         .flags          = IORESOURCE_MEM,
 127 };
 128
 129 static struct platform_device h4_flash_device = {
 130         .name           = "omapflash",
 131         .id             = 0,
 132         .dev            = {
 133                 .platform_data  = &h4_flash_data,
 134         },
 135         .num_resources  = 1,
 136         .resource       = &h4_flash_resource,
 137 };
 138
 139 /* Select between the IrDA and aGPS module
 140  */
 141 static int h4_select_irda(struct device *dev, int state)
 142 {
 143         unsigned char expa;
 144         int err = 0;
 145
 146         if ((err = read_gpio_expa(&expa, 0x21))) {
 147                 printk(KERN_ERR "Error reading from I/O expander\n");
 148                 return err;
 149         }
 150
 151         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
 152         if (state & IR_SEL) {   /* IrDa */
 153                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
 154                         printk(KERN_ERR "Error writing to I/O expander\n");
 155                         return err;
 156                 }
 157         } else {
 158                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
 159                         printk(KERN_ERR "Error writing to I/O expander\n");
 160                         return err;
 161                 }
 162         }
 163         return err;
 164 }
 165
 166 static void set_trans_mode(struct work_struct *work)
 167 {
 168         struct omap_irda_config *irda_config =
 169                 container_of(work, struct omap_irda_config, gpio_expa.work);
 170         int mode = irda_config->mode;
 171         unsigned char expa;
 172         int err = 0;
 173
 174         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
 175                 printk(KERN_ERR "Error reading from I/O expander\n");
 176         }
 177
 178         expa &= ~0x01;
 179
 180         if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
 181                 expa |= 0x01;
 182         }
 183
 184         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
 185                 printk(KERN_ERR "Error writing to I/O expander\n");
 186         }
 187 }
 188
 189 static int h4_transceiver_mode(struct device *dev, int mode)
 190 {
 191         struct omap_irda_config *irda_config = dev->platform_data;
 192
 193         irda_config->mode = mode;
 194         cancel_delayed_work(&irda_config->gpio_expa);
 195         PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
 196         schedule_delayed_work(&irda_config->gpio_expa, 0);
 197
 198         return 0;
 199 }
 200
 201 static struct omap_irda_config h4_irda_data = {
 202         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
 203         .transceiver_mode       = h4_transceiver_mode,
 204         .select_irda            = h4_select_irda,
 205         .rx_channel             = OMAP24XX_DMA_UART3_RX,
 206         .tx_channel             = OMAP24XX_DMA_UART3_TX,
 207         .dest_start             = OMAP_UART3_BASE,
 208         .src_start              = OMAP_UART3_BASE,
 209         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
 210         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
 211 };
 212
 213 static struct resource h4_irda_resources[] = {
 214         [0] = {
 215                 .start  = INT_24XX_UART3_IRQ,
 216                 .end    = INT_24XX_UART3_IRQ,
 217                 .flags  = IORESOURCE_IRQ,
 218         },
 219 };
 220
 221 static struct platform_device h4_irda_device = {
 222         .name           = "omapirda",
 223         .id             = -1,
 224         .dev            = {
 225                 .platform_data  = &h4_irda_data,
 226         },
 227         .num_resources  = 1,
 228         .resource       = h4_irda_resources,
 229 };
 230
 231 static struct omap_kp_platform_data h4_kp_data = {
 232         .rows           = 6,
 233         .cols           = 7,
 234         .keymap         = h4_keymap,
 235         .keymapsize     = ARRAY_SIZE(h4_keymap),
 236         .rep            = 1,
 237         .row_gpios      = row_gpios,
 238         .col_gpios      = col_gpios,
 239 };
 240
 241 static struct platform_device h4_kp_device = {
 242         .name           = "omap-keypad",
 243         .id             = -1,
 244         .dev            = {
 245                 .platform_data = &h4_kp_data,
 246         },
 247 };
 248
 249 static struct platform_device h4_lcd_device = {
 250         .name           = "lcd_h4",
 251         .id             = -1,
 252 };
 253
 254 static struct platform_device *h4_devices[] __initdata = {
 255         &h4_flash_device,
 256         &h4_irda_device,
 257         &h4_kp_device,
 258         &h4_lcd_device,
 259 };
 260
 261 /* 2420 Sysboot setup (2430 is different) */
 262 static u32 get_sysboot_value(void)
 263 {
 264         return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
 265                 (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
 266                  OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
 267                  OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
 268 }
 269
 270 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 271  *
 272  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 273  *  correctly.  The macro needs to look at production_id not just hawkeye.
 274  */
 275 static u32 is_gpmc_muxed(void)
 276 {
 277         u32 mux;
 278         mux = get_sysboot_value();
 279         if ((mux & 0xF) == 0xd)
 280                 return 1;       /* NAND config (could be either) */
 281         if (mux & 0x2)          /* if mux'ed */
 282                 return 1;
 283         else
 284                 return 0;
 285 }
 286
 287 static inline void __init h4_init_debug(void)
 288 {
 289         int eth_cs;
 290         unsigned long cs_mem_base;
 291         unsigned int muxed, rate;
 292         struct clk *gpmc_fck;
 293
 294         eth_cs  = H4_SMC91X_CS;
 295
 296         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 297         if (IS_ERR(gpmc_fck)) {
 298                 WARN_ON(1);
 299                 return;
 300         }
 301
 302         clk_enable(gpmc_fck);
 303         rate = clk_get_rate(gpmc_fck);
 304         clk_disable(gpmc_fck);
 305         clk_put(gpmc_fck);
 306
 307         if (is_gpmc_muxed())
 308                 muxed = 0x200;
 309         else
 310                 muxed = 0;
 311
 312         /* Make sure CS1 timings are correct */
 313         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 314                           0x00011000 | muxed);
 315
 316         if (rate >= 160000000) {
 317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 318                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 320                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 321                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 322         } else if (rate >= 130000000) {
 323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 324                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 325                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 326                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 327                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 328         } else {/* rate = 100000000 */
 329                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 330                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 331                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 333                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 334         }
 335
 336         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 337                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 338                 goto out;
 339         }
 340
 341         udelay(100);
 342
 343         omap_cfg_reg(M15_24XX_GPIO92);
 344         if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
 345                 gpmc_cs_free(eth_cs);
 346
 347 out:
 348         clk_disable(gpmc_fck);
 349         clk_put(gpmc_fck);
 350 }
 351
 352 static void __init h4_init_flash(void)
 353 {
 354         unsigned long base;
 355
 356         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
 357                 printk("Can't request GPMC CS for flash\n");
 358                 return;
 359         }
 360         h4_flash_resource.start = base;
 361         h4_flash_resource.end   = base + SZ_64M - 1;
 362 }
 363
 364 static void __init omap_h4_init_irq(void)
 365 {
 366         omap2_init_common_hw();
 367         omap_init_irq();
 368         omap_gpio_init();
 369         h4_init_flash();
 370 }
 371
 372 static struct omap_uart_config h4_uart_config __initdata = {
 373         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 374 };
 375
 376 static struct omap_lcd_config h4_lcd_config __initdata = {
 377         .ctrl_name      = "internal",
 378 };
 379
 380 static struct omap_board_config_kernel h4_config[] = {
 381         { OMAP_TAG_UART,        &h4_uart_config },
 382         { OMAP_TAG_LCD,         &h4_lcd_config },
 383 };
 384
 385 static struct at24_platform_data m24c01 = {
 386         .byte_len       = SZ_1K / 8,
 387         .page_size      = 16,
 388 };
 389
 390 static struct i2c_board_info __initdata h4_i2c_board_info[] = {
 391         {
 392                 I2C_BOARD_INFO("isp1301_omap", 0x2d),
 393                 .irq            = OMAP_GPIO_IRQ(125),
 394         },
 395         {       /* EEPROM on mainboard */
 396                 I2C_BOARD_INFO("24c01", 0x52),
 397                 .platform_data  = &m24c01,
 398         },
 399         {       /* EEPROM on cpu card */
 400                 I2C_BOARD_INFO("24c01", 0x57),
 401                 .platform_data  = &m24c01,
 402         },
 403 };
 404
 405 static void __init omap_h4_init(void)
 406 {
 407         /*
 408          * Make sure the serial ports are muxed on at this point.
 409          * You have to mux them off in device drivers later on
 410          * if not needed.
 411          */
 412 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 413         omap_cfg_reg(K15_24XX_UART3_TX);
 414         omap_cfg_reg(K14_24XX_UART3_RX);
 415 #endif
 416
 417 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 418         if (omap_has_menelaus()) {
 419                 row_gpios[5] = 0;
 420                 col_gpios[2] = 15;
 421                 col_gpios[6] = 18;
 422         }
 423 #endif
 424
 425         i2c_register_board_info(1, h4_i2c_board_info,
 426                         ARRAY_SIZE(h4_i2c_board_info));
 427
 428         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 429         omap_board_config = h4_config;
 430         omap_board_config_size = ARRAY_SIZE(h4_config);
 431         omap_serial_init();
 432 }
 433
 434 static void __init omap_h4_map_io(void)
 435 {
 436         omap2_set_globals_242x();
 437         omap2_map_common_io();
 438 }
 439
 440 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 441         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 442         .phys_io        = 0x48000000,
 443         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 444         .boot_params    = 0x80000100,
 445         .map_io         = omap_h4_map_io,
 446         .init_irq       = omap_h4_init_irq,
 447         .init_machine   = omap_h4_init,
 448         .timer          = &omap_timer,
 449 MACHINE_END