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 static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
  48 static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
  49
  50 static int h4_keymap[] = {
  51         KEY(0, 0, KEY_LEFT),
  52         KEY(0, 1, KEY_RIGHT),
  53         KEY(0, 2, KEY_A),
  54         KEY(0, 3, KEY_B),
  55         KEY(0, 4, KEY_C),
  56         KEY(1, 0, KEY_DOWN),
  57         KEY(1, 1, KEY_UP),
  58         KEY(1, 2, KEY_E),
  59         KEY(1, 3, KEY_F),
  60         KEY(1, 4, KEY_G),
  61         KEY(2, 0, KEY_ENTER),
  62         KEY(2, 1, KEY_I),
  63         KEY(2, 2, KEY_J),
  64         KEY(2, 3, KEY_K),
  65         KEY(2, 4, KEY_3),
  66         KEY(3, 0, KEY_M),
  67         KEY(3, 1, KEY_N),
  68         KEY(3, 2, KEY_O),
  69         KEY(3, 3, KEY_P),
  70         KEY(3, 4, KEY_Q),
  71         KEY(4, 0, KEY_R),
  72         KEY(4, 1, KEY_4),
  73         KEY(4, 2, KEY_T),
  74         KEY(4, 3, KEY_U),
  75         KEY(4, 4, KEY_ENTER),
  76         KEY(5, 0, KEY_V),
  77         KEY(5, 1, KEY_W),
  78         KEY(5, 2, KEY_L),
  79         KEY(5, 3, KEY_S),
  80         KEY(5, 4, KEY_ENTER),
  81         0
  82 };
  83
  84 static struct mtd_partition h4_partitions[] = {
  85         /* bootloader (U-Boot, etc) in first sector */
  86         {
  87               .name             = "bootloader",
  88               .offset           = 0,
  89               .size             = SZ_128K,
  90               .mask_flags       = MTD_WRITEABLE, /* force read-only */
  91         },
  92         /* bootloader params in the next sector */
  93         {
  94               .name             = "params",
  95               .offset           = MTDPART_OFS_APPEND,
  96               .size             = SZ_128K,
  97               .mask_flags       = 0,
  98         },
  99         /* kernel */
 100         {
 101               .name             = "kernel",
 102               .offset           = MTDPART_OFS_APPEND,
 103               .size             = SZ_2M,
 104               .mask_flags       = 0
 105         },
 106         /* file system */
 107         {
 108               .name             = "filesystem",
 109               .offset           = MTDPART_OFS_APPEND,
 110               .size             = MTDPART_SIZ_FULL,
 111               .mask_flags       = 0
 112         }
 113 };
 114
 115 static struct flash_platform_data h4_flash_data = {
 116         .map_name       = "cfi_probe",
 117         .width          = 2,
 118         .parts          = h4_partitions,
 119         .nr_parts       = ARRAY_SIZE(h4_partitions),
 120 };
 121
 122 static struct resource h4_flash_resource = {
 123         .start          = H4_CS0_BASE,
 124         .end            = H4_CS0_BASE + SZ_64M - 1,
 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 static struct resource h4_smc91x_resources[] = {
 139         [0] = {
 140                 .flags  = IORESOURCE_MEM,
 141         },
 142         [1] = {
 143                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 144                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 145                 .flags  = IORESOURCE_IRQ,
 146         },
 147 };
 148
 149 static struct platform_device h4_smc91x_device = {
 150         .name           = "smc91x",
 151         .id             = -1,
 152         .num_resources  = ARRAY_SIZE(h4_smc91x_resources),
 153         .resource       = h4_smc91x_resources,
 154 };
 155
 156 /* Select between the IrDA and aGPS module
 157  */
 158 static int h4_select_irda(struct device *dev, int state)
 159 {
 160         unsigned char expa;
 161         int err = 0;
 162
 163         if ((err = read_gpio_expa(&expa, 0x21))) {
 164                 printk(KERN_ERR "Error reading from I/O expander\n");
 165                 return err;
 166         }
 167
 168         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
 169         if (state & IR_SEL) {   /* IrDa */
 170                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
 171                         printk(KERN_ERR "Error writing to I/O expander\n");
 172                         return err;
 173                 }
 174         } else {
 175                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
 176                         printk(KERN_ERR "Error writing to I/O expander\n");
 177                         return err;
 178                 }
 179         }
 180         return err;
 181 }
 182
 183 static void set_trans_mode(void *data)
 184 {
 185         int *mode = data;
 186         unsigned char expa;
 187         int err = 0;
 188
 189         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
 190                 printk(KERN_ERR "Error reading from I/O expander\n");
 191         }
 192
 193         expa &= ~0x01;
 194
 195         if (!(*mode & IR_SIRMODE)) { /* MIR/FIR */
 196                 expa |= 0x01;
 197         }
 198
 199         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
 200                 printk(KERN_ERR "Error writing to I/O expander\n");
 201         }
 202 }
 203
 204 static int h4_transceiver_mode(struct device *dev, int mode)
 205 {
 206         struct omap_irda_config *irda_config = dev->platform_data;
 207
 208         cancel_delayed_work(&irda_config->gpio_expa);
 209         PREPARE_WORK(&irda_config->gpio_expa, set_trans_mode, &mode);
 210         schedule_work(&irda_config->gpio_expa);
 211
 212         return 0;
 213 }
 214
 215 static struct omap_irda_config h4_irda_data = {
 216         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
 217         .transceiver_mode       = h4_transceiver_mode,
 218         .select_irda            = h4_select_irda,
 219         .rx_channel             = OMAP24XX_DMA_UART3_RX,
 220         .tx_channel             = OMAP24XX_DMA_UART3_TX,
 221         .dest_start             = OMAP_UART3_BASE,
 222         .src_start              = OMAP_UART3_BASE,
 223         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
 224         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
 225 };
 226
 227 static struct resource h4_irda_resources[] = {
 228         [0] = {
 229                 .start  = INT_24XX_UART3_IRQ,
 230                 .end    = INT_24XX_UART3_IRQ,
 231                 .flags  = IORESOURCE_IRQ,
 232         },
 233 };
 234
 235 static struct platform_device h4_irda_device = {
 236         .name           = "omapirda",
 237         .id             = -1,
 238         .dev            = {
 239                 .platform_data  = &h4_irda_data,
 240         },
 241         .num_resources  = 1,
 242         .resource       = h4_irda_resources,
 243 };
 244
 245 static struct omap_kp_platform_data h4_kp_data = {
 246         .rows           = 6,
 247         .cols           = 7,
 248         .keymap         = h4_keymap,
 249         .rep            = 1,
 250         .row_gpios      = row_gpios,
 251         .col_gpios      = col_gpios,
 252 };
 253
 254 static struct platform_device h4_kp_device = {
 255         .name           = "omap-keypad",
 256         .id             = -1,
 257         .dev            = {
 258                 .platform_data = &h4_kp_data,
 259         },
 260 };
 261
 262 static struct platform_device h4_lcd_device = {
 263         .name           = "lcd_h4",
 264         .id             = -1,
 265 };
 266
 267 static struct platform_device *h4_devices[] __initdata = {
 268         &h4_smc91x_device,
 269         &h4_flash_device,
 270         &h4_irda_device,
 271         &h4_kp_device,
 272         &h4_lcd_device,
 273 };
 274
 275 /* 2420 Sysboot setup (2430 is different) */
 276 static u32 get_sysboot_value(void)
 277 {
 278         return (omap_readl(OMAP242X_CONTROL_STATUS) & 0xFFF);
 279 }
 280
 281 /* FIXME: This function should be moved to some other file, gpmc.c? */
 282
 283 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 284  *
 285  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 286  *  correctly.  The macro needs to look at production_id not just hawkeye.
 287  */
 288 static u32 is_gpmc_muxed(void)
 289 {
 290         u32 mux;
 291         mux = get_sysboot_value();
 292         if ((mux & 0xF) == 0xd)
 293                 return 1;       /* NAND config (could be either) */
 294         if (mux & 0x2)          /* if mux'ed */
 295                 return 1;
 296         else
 297                 return 0;
 298 }
 299
 300 #define SMC91X_CS       1
 301
 302 static inline void __init h4_init_smc91x(void)
 303 {
 304         int eth_cs;
 305         unsigned int muxed, rate;
 306         struct clk *l3ck;
 307
 308         eth_cs  = SMC91X_CS;
 309
 310         l3ck = clk_get(NULL, "core_l3_ck");
 311         if (IS_ERR(l3ck))
 312                 rate = 100000000;
 313         else
 314                 rate = clk_get_rate(l3ck);
 315
 316         if (is_gpmc_muxed())
 317                 muxed = 0x200;
 318         else
 319                 muxed = 0;
 320
 321         /* Make sure CS1 timings are correct */
 322         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 323                           0x00011000 | muxed);
 324
 325         if (rate >= 160000000) {
 326                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 327                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 328                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 329                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 330                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 331         } else if (rate >= 130000000) {
 332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 333                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 334                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 335                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 336                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 337         } else {/* rate = 100000000 */
 338                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 339                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 340                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 341                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 342                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 343         }
 344
 345         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG7,
 346                           0x00000f40 | (0x08000000 >> 24));
 347         udelay(100);
 348
 349         omap_cfg_reg(M15_24XX_GPIO92);
 350         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 351                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 352                         OMAP24XX_ETHR_GPIO_IRQ);
 353                 return;
 354         }
 355         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 356
 357         h4_smc91x_resources[0].start = gpmc_cs_get_base_addr(1) + 0x300;
 358         h4_smc91x_resources[0].end   = h4_smc91x_resources[0].start + 0xf;
 359 }
 360
 361 static void __init omap_h4_init_irq(void)
 362 {
 363         omap2_init_common_hw();
 364         omap_init_irq();
 365         omap_gpio_init();
 366         h4_init_smc91x();
 367 }
 368
 369 static struct omap_uart_config h4_uart_config __initdata = {
 370         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 371 };
 372
 373 static struct omap_mmc_config h4_mmc_config __initdata = {
 374         .mmc [0] = {
 375                 .enabled        = 1,
 376                 .wire4          = 1,
 377                 .wp_pin         = -1,
 378                 .power_pin      = -1,
 379                 .switch_pin     = -1,
 380         },
 381 };
 382
 383 static struct omap_lcd_config h4_lcd_config __initdata = {
 384         .ctrl_name      = "internal",
 385 };
 386
 387 static struct omap_board_config_kernel h4_config[] = {
 388         { OMAP_TAG_UART,        &h4_uart_config },
 389         { OMAP_TAG_MMC,         &h4_mmc_config },
 390         { OMAP_TAG_LCD,         &h4_lcd_config },
 391 };
 392
 393 static void __init omap_h4_init(void)
 394 {
 395         /*
 396          * Make sure the serial ports are muxed on at this point.
 397          * You have to mux them off in device drivers later on
 398          * if not needed.
 399          */
 400 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
 401         omap_cfg_reg(K15_24XX_UART3_TX);
 402         omap_cfg_reg(K14_24XX_UART3_RX);
 403 #endif
 404
 405 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 406         if (omap_has_menelaus()) {
 407                 row_gpios[5] = 0;
 408                 col_gpios[2] = 15;
 409                 col_gpios[6] = 18;
 410         }
 411 #endif
 412
 413         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 414         omap_board_config = h4_config;
 415         omap_board_config_size = ARRAY_SIZE(h4_config);
 416         omap_serial_init();
 417 }
 418
 419 static void __init omap_h4_map_io(void)
 420 {
 421         omap2_map_common_io();
 422 }
 423
 424 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 425         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 426         .phys_io        = 0x48000000,
 427         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 428         .boot_params    = 0x80000100,
 429         .map_io         = omap_h4_map_io,
 430         .init_irq       = omap_h4_init_irq,
 431         .init_machine   = omap_h4_init,
 432         .timer          = &omap_timer,
 433 MACHINE_END