arch/arm/mach-omap2/board-2430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-2430sdp.c
   3  *
   4  * Copyright (C) 2006 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
   9  * Updated the Code for 2430 SDP : Syed Mohammed Khasim
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/delay.h>
  22 #include <linux/input.h>
  23 #include <linux/err.h>
  24 #include <linux/clk.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/ads7846.h>
  27
  28 #include <asm/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 <asm/arch/gpio.h>
  35 #include <asm/arch/mux.h>
  36 #include <asm/arch/board.h>
  37 #include <asm/arch/common.h>
  38 #include <asm/arch/keypad.h>
  39 #include <asm/arch/gpmc.h>
  40 #include <asm/arch/mcspi.h>
  41 #include <asm/arch/twl4030-rtc.h>
  42
  43 #include <asm/io.h>
  44
  45 #define SDP2430_FLASH_CS        0
  46 #define SDP2430_SMC91X_CS       5
  47
  48 /* GPIO used for TSC2046 (touchscreen)
  49  *
  50  * Also note that the tsc2046 is the same silicon as the ads7846, so
  51  * that driver is used for the touchscreen. */
  52 #define TS_GPIO                 24
  53
  54 #define TWL4030_MSECURE_GPIO    118
  55 #define SECONDARY_LCD_GPIO      147
  56
  57 static struct mtd_partition sdp2430_partitions[] = {
  58         /* bootloader (U-Boot, etc) in first sector */
  59         {
  60                 .name           = "bootloader",
  61                 .offset         = 0,
  62                 .size           = SZ_256K,
  63                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  64          },
  65         /* bootloader params in the next sector */
  66         {
  67                 .name           = "params",
  68                 .offset         = MTDPART_OFS_APPEND,
  69                 .size           = SZ_128K,
  70                 .mask_flags     = 0,
  71          },
  72         /* kernel */
  73         {
  74                 .name           = "kernel",
  75                 .offset         = MTDPART_OFS_APPEND,
  76                 .size           = SZ_2M,
  77                 .mask_flags     = 0
  78         },
  79         /* file system */
  80         {
  81                 .name           = "filesystem",
  82                 .offset         = MTDPART_OFS_APPEND,
  83                 .size           = MTDPART_SIZ_FULL,
  84                 .mask_flags     = 0
  85         }
  86 };
  87
  88 static struct flash_platform_data sdp2430_flash_data = {
  89         .map_name       = "cfi_probe",
  90         .width          = 2,
  91         .parts          = sdp2430_partitions,
  92         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  93 };
  94
  95 static struct resource sdp2430_flash_resource = {
  96         .start          = SDP2430_CS0_BASE,
  97         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  98         .flags          = IORESOURCE_MEM,
  99 };
 100
 101 static struct platform_device sdp2430_flash_device = {
 102         .name           = "omapflash",
 103         .id             = 0,
 104         .dev = {
 105                 .platform_data  = &sdp2430_flash_data,
 106         },
 107         .num_resources  = 1,
 108         .resource       = &sdp2430_flash_resource,
 109 };
 110
 111 static struct resource sdp2430_smc91x_resources[] = {
 112         [0] = {
 113                 .start  = SDP2430_CS0_BASE,
 114                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         [1] = {
 118                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 119                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 120                 .flags  = IORESOURCE_IRQ,
 121         },
 122 };
 123
 124 static struct platform_device sdp2430_lcd_device = {
 125         .name           = "sdp2430_lcd",
 126         .id             = -1,
 127 };
 128
 129 static struct platform_device sdp2430_smc91x_device = {
 130         .name           = "smc91x",
 131         .id             = -1,
 132         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 133         .resource       = sdp2430_smc91x_resources,
 134 };
 135
 136 /*
 137  * Key mapping for 2430 SDP board
 138  */
 139
 140 static int sdp2430_keymap[] = {
 141         KEY(0, 0, KEY_LEFT),
 142         KEY(0, 1, KEY_RIGHT),
 143         KEY(0, 2, KEY_A),
 144         KEY(0, 3, KEY_B),
 145         KEY(0, 4, KEY_C),
 146         KEY(1, 0, KEY_DOWN),
 147         KEY(1, 1, KEY_UP),
 148         KEY(1, 2, KEY_E),
 149         KEY(1, 3, KEY_F),
 150         KEY(1, 4, KEY_G),
 151         KEY(2, 0, KEY_ENTER),
 152         KEY(2, 1, KEY_I),
 153         KEY(2, 2, KEY_J),
 154         KEY(2, 3, KEY_K),
 155         KEY(2, 4, KEY_3),
 156         KEY(3, 0, KEY_M),
 157         KEY(3, 1, KEY_N),
 158         KEY(3, 2, KEY_O),
 159         KEY(3, 3, KEY_P),
 160         KEY(3, 4, KEY_Q),
 161         KEY(4, 0, KEY_R),
 162         KEY(4, 1, KEY_4),
 163         KEY(4, 2, KEY_T),
 164         KEY(4, 3, KEY_U),
 165         KEY(4, 4, KEY_D),
 166         KEY(5, 0, KEY_V),
 167         KEY(5, 1, KEY_W),
 168         KEY(5, 2, KEY_L),
 169         KEY(5, 3, KEY_S),
 170         KEY(5, 4, KEY_H),
 171         0
 172 };
 173
 174 static struct omap_kp_platform_data sdp2430_kp_data = {
 175         .rows           = 5,
 176         .cols           = 6,
 177         .keymap         = sdp2430_keymap,
 178         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 179         .rep            = 1,
 180 };
 181
 182 static struct platform_device sdp2430_kp_device = {
 183         .name           = "omap_twl4030keypad",
 184         .id             = -1,
 185         .dev            = {
 186                 .platform_data  = &sdp2430_kp_data,
 187         },
 188 };
 189
 190 static int twl4030_rtc_init(void)
 191 {
 192         int ret = 0;
 193
 194         ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
 195         if (ret < 0) {
 196                 printk(KERN_ERR "twl4030_rtc_init: can't reserve GPIO:%d !\n",
 197                         TWL4030_MSECURE_GPIO);
 198                 goto out;
 199         }
 200         /*
 201          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 202          * Make msecure line high in order to change the TWL4030 RTC time
 203          * and calender registers.
 204          */
 205         omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);       /*dir out */
 206         omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
 207 out:
 208         return ret;
 209 }
 210
 211 static void twl4030_rtc_exit(void)
 212 {
 213         omap_free_gpio(TWL4030_MSECURE_GPIO);
 214 }
 215
 216 static struct twl4030rtc_platform_data sdp2430_twl4030rtc_data = {
 217         .init = &twl4030_rtc_init,
 218         .exit = &twl4030_rtc_exit,
 219 };
 220
 221 static struct platform_device sdp2430_twl4030rtc_device = {
 222         .name           = "twl4030_rtc",
 223         .id             = -1,
 224         .dev            = {
 225                 .platform_data  = &sdp2430_twl4030rtc_data,
 226         },
 227 };
 228
 229 static struct platform_device *sdp2430_devices[] __initdata = {
 230         &sdp2430_smc91x_device,
 231         &sdp2430_flash_device,
 232         &sdp2430_kp_device,
 233         &sdp2430_lcd_device,
 234         &sdp2430_twl4030rtc_device,
 235 };
 236
 237 static void ads7846_dev_init(void)
 238 {
 239         if (omap_request_gpio(TS_GPIO) < 0)
 240                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 241
 242         omap_set_gpio_direction(TS_GPIO, 1);
 243
 244         omap_set_gpio_debounce(TS_GPIO, 1);
 245         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 246 }
 247
 248 static int ads7846_get_pendown_state(void)
 249 {
 250         return !omap_get_gpio_datain(TS_GPIO);
 251 }
 252
 253 static struct ads7846_platform_data tsc2046_config __initdata = {
 254         .get_pendown_state = ads7846_get_pendown_state,
 255         .keep_vref_on      = 1,
 256 };
 257
 258 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 259         .turbo_mode     = 0,
 260         .single_channel = 0,  /* 0: slave, 1: master */
 261 };
 262
 263 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 264         .ctrl_name      = "internal",
 265 };
 266
 267 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 268         [0] = {
 269                 /*
 270                  * TSC2046 operates at a max freqency of 2MHz, so
 271                  * operate slightly below at 1.5MHz
 272                  */
 273                 .modalias        = "ads7846",
 274                 .bus_num         = 1,
 275                 .chip_select     = 0,
 276                 .max_speed_hz    = 1500000,
 277                 .controller_data = &tsc2046_mcspi_config,
 278                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 279                 .platform_data   = &tsc2046_config,
 280         },
 281 };
 282
 283 static inline void __init sdp2430_init_smc91x(void)
 284 {
 285         int eth_cs;
 286         unsigned long cs_mem_base;
 287         unsigned int rate;
 288         struct clk *l3ck;
 289
 290         eth_cs = SDP2430_SMC91X_CS;
 291
 292         l3ck = clk_get(NULL, "core_l3_ck");
 293         if (IS_ERR(l3ck))
 294                 rate = 100000000;
 295         else
 296                 rate = clk_get_rate(l3ck);
 297
 298         /* Make sure CS1 timings are correct, for 2430 always muxed */
 299         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 300
 301         if (rate >= 160000000) {
 302                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 303                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 304                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 305                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 306                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 307         } else if (rate >= 130000000) {
 308                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 309                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 310                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 311                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 312                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 313         } else { /* rate = 100000000 */
 314                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 315                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 316                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 318                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 319         }
 320
 321         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 322                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 323                 return;
 324         }
 325
 326         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 327         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 328         udelay(100);
 329
 330         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 331                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 332                         OMAP24XX_ETHR_GPIO_IRQ);
 333                 gpmc_cs_free(eth_cs);
 334                 return;
 335         }
 336         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 337
 338 }
 339
 340 static void __init omap_2430sdp_init_irq(void)
 341 {
 342         omap2_init_common_hw();
 343         omap_init_irq();
 344         omap_gpio_init();
 345         sdp2430_init_smc91x();
 346 }
 347
 348 static struct omap_uart_config sdp2430_uart_config __initdata = {
 349         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 350 };
 351
 352 static
 353 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 354         .console_uart = 1,
 355         .console_speed = 115200,
 356 };
 357
 358 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 359         {OMAP_TAG_UART, &sdp2430_uart_config},
 360         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 361         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 362 };
 363
 364 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
 365
 366 #define OMAP2_I2C_BASE1         0x48070000
 367 #define OMAP2_I2C_BASE2         0x48072000
 368 #define OMAP2_I2C_INT1          56
 369 #define OMAP2_I2C_INT2          57
 370
 371 static u32 omap2_i2c1_clkrate   = 400;
 372 static u32 omap2_i2c2_clkrate   = 2600;
 373
 374 static struct resource i2c_resources1[] = {
 375         {
 376                 .start  = OMAP2_I2C_BASE1,
 377                 .end    = OMAP2_I2C_BASE1 + 0x3f,
 378                 .flags  = IORESOURCE_MEM,
 379         },
 380         {
 381                 .start  = OMAP2_I2C_INT1,
 382                 .flags  = IORESOURCE_IRQ,
 383         },
 384 };
 385
 386 static struct resource i2c_resources2[] = {
 387         {
 388                 .start  = OMAP2_I2C_BASE2,
 389                 .end    = OMAP2_I2C_BASE2 + 0x3f,
 390                 .flags  = IORESOURCE_MEM,
 391         },
 392         {
 393                 .start  = OMAP2_I2C_INT2,
 394                 .flags  = IORESOURCE_IRQ,
 395         },
 396 };
 397
 398 static struct platform_device omap_i2c_device1 = {
 399         .name           = "i2c_omap",
 400         .id             = 1,
 401         .num_resources  = ARRAY_SIZE(i2c_resources1),
 402         .resource       = i2c_resources1,
 403         .dev            = {
 404                 .platform_data  = &omap2_i2c1_clkrate,
 405         },
 406 };
 407
 408 static struct platform_device omap_i2c_device2 = {
 409         .name           = "i2c_omap",
 410         .id             = 2,
 411         .num_resources  = ARRAY_SIZE(i2c_resources2),
 412         .resource       = i2c_resources2,
 413         .dev            = {
 414                 .platform_data  = &omap2_i2c2_clkrate,
 415         },
 416 };
 417
 418 static void omap_init_i2c(void)
 419 {
 420         (void) platform_device_register(&omap_i2c_device2);
 421         (void) platform_device_register(&omap_i2c_device1);
 422 }
 423
 424 #else
 425
 426 static void omap_init_i2c(void) {}
 427
 428 #endif
 429
 430 static int __init omap2430_i2c_init(void)
 431 {
 432         omap_init_i2c();
 433         return 0;
 434 }
 435
 436 extern void __init sdp2430_flash_init(void);
 437 extern void __init sdp2430_usb_init(void);
 438
 439 static void __init omap_2430sdp_init(void)
 440 {
 441         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 442         omap_board_config = sdp2430_config;
 443         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 444         omap_serial_init();
 445
 446         sdp2430_flash_init();
 447         sdp2430_usb_init();
 448
 449         spi_register_board_info(sdp2430_spi_board_info,
 450                                 ARRAY_SIZE(sdp2430_spi_board_info));
 451         ads7846_dev_init();
 452
 453         /* turn off secondary LCD backlight */
 454         omap_set_gpio_direction(SECONDARY_LCD_GPIO, 0);
 455         omap_set_gpio_dataout(SECONDARY_LCD_GPIO, 0);
 456 }
 457
 458 static void __init omap_2430sdp_map_io(void)
 459 {
 460         omap2_map_common_io();
 461 }
 462
 463 arch_initcall(omap2430_i2c_init);
 464
 465 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 466         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 467         .phys_io        = 0x48000000,
 468         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 469         .boot_params    = 0x80000100,
 470         .map_io         = omap_2430sdp_map_io,
 471         .init_irq       = omap_2430sdp_init_irq,
 472         .init_machine   = omap_2430sdp_init,
 473         .timer          = &omap_timer,
 474 MACHINE_END