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

   1 /*
   2  * linux/arch/arm/mach-omap/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 <asm/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 <asm/arch/gpio.h>
  32 #include <asm/arch/gpioexpander.h>
  33 #include <asm/arch/mux.h>
  34 #include <asm/arch/usb.h>
  35 #include <asm/arch/irda.h>
  36 #include <asm/arch/board.h>
  37 #include <asm/arch/common.h>
  38 #include <asm/arch/keypad.h>
  39 #include <asm/arch/menelaus.h>
  40 #include <asm/arch/dma.h>
  41 #include <asm/arch/gpmc.h>
  42 #include "prcm-regs.h"
  43
  44 #include <asm/io.h>
  45 #include <asm/delay.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 static struct resource h4_smc91x_resources[] = {
 140         [0] = {
 141                 .flags  = IORESOURCE_MEM,
 142         },
 143         [1] = {
 144                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 145                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 146                 .flags  = IORESOURCE_IRQ,
 147         },
 148 };
 149
 150 static struct platform_device h4_smc91x_device = {
 151         .name           = "smc91x",
 152         .id             = -1,
 153         .num_resources  = ARRAY_SIZE(h4_smc91x_resources),
 154         .resource       = h4_smc91x_resources,
 155 };
 156
 157 /* Select between the IrDA and aGPS module
 158  */
 159 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 160 static int h4_select_irda(struct device *dev, int state)
 161 {
 162         unsigned char expa;
 163         int err = 0;
 164
 165         if ((err = read_gpio_expa(&expa, 0x21))) {
 166                 printk(KERN_ERR "Error reading from I/O expander\n");
 167                 return err;
 168         }
 169
 170         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
 171         if (state & IR_SEL) {   /* IrDa */
 172                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
 173                         printk(KERN_ERR "Error writing to I/O expander\n");
 174                         return err;
 175                 }
 176         } else {
 177                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
 178                         printk(KERN_ERR "Error writing to I/O expander\n");
 179                         return err;
 180                 }
 181         }
 182         return err;
 183 }
 184
 185 static void set_trans_mode(void *data)
 186 {
 187         int *mode = data;
 188         unsigned char expa;
 189         int err = 0;
 190
 191         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
 192                 printk(KERN_ERR "Error reading from I/O expander\n");
 193         }
 194
 195         expa &= ~0x01;
 196
 197         if (!(*mode & IR_SIRMODE)) { /* MIR/FIR */
 198                 expa |= 0x01;
 199         }
 200
 201         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
 202                 printk(KERN_ERR "Error writing to I/O expander\n");
 203         }
 204 }
 205
 206 static int h4_transceiver_mode(struct device *dev, int mode)
 207 {
 208         struct omap_irda_config *irda_config = dev->platform_data;
 209
 210         cancel_delayed_work(&irda_config->gpio_expa);
 211         PREPARE_WORK(&irda_config->gpio_expa, set_trans_mode, &mode);
 212         schedule_work(&irda_config->gpio_expa);
 213
 214         return 0;
 215 }
 216 #else
 217 static int h4_select_irda(struct device *dev, int state) { return 0; }
 218 static int h4_transceiver_mode(struct device *dev, int mode) { return 0; }
 219 #endif
 220
 221 static struct omap_irda_config h4_irda_data = {
 222         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
 223         .transceiver_mode       = h4_transceiver_mode,
 224         .select_irda            = h4_select_irda,
 225         .rx_channel             = OMAP24XX_DMA_UART3_RX,
 226         .tx_channel             = OMAP24XX_DMA_UART3_TX,
 227         .dest_start             = OMAP_UART3_BASE,
 228         .src_start              = OMAP_UART3_BASE,
 229         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
 230         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
 231 };
 232
 233 static struct resource h4_irda_resources[] = {
 234         [0] = {
 235                 .start  = INT_24XX_UART3_IRQ,
 236                 .end    = INT_24XX_UART3_IRQ,
 237                 .flags  = IORESOURCE_IRQ,
 238         },
 239 };
 240
 241 static struct platform_device h4_irda_device = {
 242         .name           = "omapirda",
 243         .id             = -1,
 244         .dev            = {
 245                 .platform_data  = &h4_irda_data,
 246         },
 247         .num_resources  = 1,
 248         .resource       = h4_irda_resources,
 249 };
 250
 251 static struct omap_kp_platform_data h4_kp_data = {
 252         .rows           = 6,
 253         .cols           = 7,
 254         .keymap         = h4_keymap,
 255         .rep            = 1,
 256         .row_gpios      = row_gpios,
 257         .col_gpios      = col_gpios,
 258 };
 259
 260 static struct platform_device h4_kp_device = {
 261         .name           = "omap-keypad",
 262         .id             = -1,
 263         .dev            = {
 264                 .platform_data = &h4_kp_data,
 265         },
 266 };
 267
 268 static struct platform_device h4_lcd_device = {
 269         .name           = "lcd_h4",
 270         .id             = -1,
 271 };
 272
 273 static struct platform_device *h4_devices[] __initdata = {
 274         &h4_smc91x_device,
 275         &h4_flash_device,
 276         &h4_irda_device,
 277         &h4_kp_device,
 278         &h4_lcd_device,
 279 };
 280
 281 /* 2420 Sysboot setup (2430 is different) */
 282 static u32 get_sysboot_value(void)
 283 {
 284         return (omap_readl(OMAP242X_CONTROL_STATUS) & 0xFFF);
 285 }
 286
 287 /* FIXME: This function should be moved to some other file, gpmc.c? */
 288
 289 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 290  *
 291  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 292  *  correctly.  The macro needs to look at production_id not just hawkeye.
 293  */
 294 static u32 is_gpmc_muxed(void)
 295 {
 296         u32 mux;
 297         mux = get_sysboot_value();
 298         if ((mux & 0xF) == 0xd)
 299                 return 1;       /* NAND config (could be either) */
 300         if (mux & 0x2)          /* if mux'ed */
 301                 return 1;
 302         else
 303                 return 0;
 304 }
 305
 306 static inline void __init h4_init_smc91x(void)
 307 {
 308         int eth_cs;
 309         unsigned long cs_mem_base;
 310         unsigned int muxed, rate;
 311         struct clk *l3ck;
 312
 313         eth_cs  = H4_SMC91X_CS;
 314
 315         l3ck = clk_get(NULL, "core_l3_ck");
 316         if (IS_ERR(l3ck))
 317                 rate = 100000000;
 318         else
 319                 rate = clk_get_rate(l3ck);
 320
 321         if (is_gpmc_muxed())
 322                 muxed = 0x200;
 323         else
 324                 muxed = 0;
 325
 326         /* Make sure CS1 timings are correct */
 327         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 328                           0x00011000 | muxed);
 329
 330         if (rate >= 160000000) {
 331                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 333                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 334                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 335                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 336         } else if (rate >= 130000000) {
 337                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 338                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 339                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 340                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 341                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 342         } else {/* rate = 100000000 */
 343                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 344                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 345                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 346                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 347                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 348         }
 349
 350         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 351                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 352                 return;
 353         }
 354         h4_smc91x_resources[0].start = cs_mem_base + 0x300;
 355         h4_smc91x_resources[0].end   = cs_mem_base + 0x30f;
 356         udelay(100);
 357
 358         omap_cfg_reg(M15_24XX_GPIO92);
 359         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 360                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 361                         OMAP24XX_ETHR_GPIO_IRQ);
 362                 gpmc_cs_free(eth_cs);
 363                 return;
 364         }
 365         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 366
 367 }
 368
 369 static void __init h4_init_flash(void)
 370 {
 371         unsigned long base;
 372
 373         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
 374                 printk("Can't request GPMC CS for flash\n");
 375                 return;
 376         }
 377         h4_flash_resource.start = base;
 378         h4_flash_resource.end   = base + SZ_64M - 1;
 379 }
 380
 381 static void __init omap_h4_init_irq(void)
 382 {
 383         omap2_init_common_hw();
 384         omap_init_irq();
 385         omap_gpio_init();
 386         h4_init_smc91x();
 387         h4_init_flash();
 388 }
 389
 390 static struct omap_uart_config h4_uart_config __initdata = {
 391         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 392 };
 393
 394 static struct omap_mmc_config h4_mmc_config __initdata = {
 395         .mmc [0] = {
 396                 .enabled        = 1,
 397                 .wire4          = 1,
 398                 .wp_pin         = -1,
 399                 .power_pin      = -1,
 400                 .switch_pin     = -1,
 401         },
 402 };
 403
 404 static struct omap_lcd_config h4_lcd_config __initdata = {
 405         .ctrl_name      = "internal",
 406 };
 407
 408 static struct omap_board_config_kernel h4_config[] = {
 409         { OMAP_TAG_UART,        &h4_uart_config },
 410         { OMAP_TAG_MMC,         &h4_mmc_config },
 411         { OMAP_TAG_LCD,         &h4_lcd_config },
 412 };
 413
 414 static void __init omap_h4_init(void)
 415 {
 416         /*
 417          * Make sure the serial ports are muxed on at this point.
 418          * You have to mux them off in device drivers later on
 419          * if not needed.
 420          */
 421 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 422         omap_cfg_reg(K15_24XX_UART3_TX);
 423         omap_cfg_reg(K14_24XX_UART3_RX);
 424 #endif
 425
 426 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 427         if (omap_has_menelaus()) {
 428                 row_gpios[5] = 0;
 429                 col_gpios[2] = 15;
 430                 col_gpios[6] = 18;
 431         }
 432 #endif
 433
 434         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 435         omap_board_config = h4_config;
 436         omap_board_config_size = ARRAY_SIZE(h4_config);
 437         omap_serial_init();
 438 }
 439
 440 static void __init omap_h4_map_io(void)
 441 {
 442         omap2_map_common_io();
 443 }
 444
 445 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 446         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 447         .phys_io        = 0x48000000,
 448         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 449         .boot_params    = 0x80000100,
 450         .map_io         = omap_h4_map_io,
 451         .init_irq       = omap_h4_init_irq,
 452         .init_machine   = omap_h4_init,
 453         .timer          = &omap_timer,
 454 MACHINE_END