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 "prcm-regs.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 static struct mtd_partition sdp2430_partitions[] = {
  55         /* bootloader (U-Boot, etc) in first sector */
  56         {
  57                 .name           = "bootloader",
  58                 .offset         = 0,
  59                 .size           = SZ_256K,
  60                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  61          },
  62         /* bootloader params in the next sector */
  63         {
  64                 .name           = "params",
  65                 .offset         = MTDPART_OFS_APPEND,
  66                 .size           = SZ_128K,
  67                 .mask_flags     = 0,
  68          },
  69         /* kernel */
  70         {
  71                 .name           = "kernel",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = SZ_2M,
  74                 .mask_flags     = 0
  75         },
  76         /* file system */
  77         {
  78                 .name           = "filesystem",
  79                 .offset         = MTDPART_OFS_APPEND,
  80                 .size           = MTDPART_SIZ_FULL,
  81                 .mask_flags     = 0
  82         }
  83 };
  84
  85 static struct flash_platform_data sdp2430_flash_data = {
  86         .map_name       = "cfi_probe",
  87         .width          = 2,
  88         .parts          = sdp2430_partitions,
  89         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  90 };
  91
  92 static struct resource sdp2430_flash_resource = {
  93         .start          = SDP2430_CS0_BASE,
  94         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  95         .flags          = IORESOURCE_MEM,
  96 };
  97
  98 static struct platform_device sdp2430_flash_device = {
  99         .name           = "omapflash",
 100         .id             = 0,
 101         .dev = {
 102                 .platform_data  = &sdp2430_flash_data,
 103         },
 104         .num_resources  = 1,
 105         .resource       = &sdp2430_flash_resource,
 106 };
 107
 108 static struct resource sdp2430_smc91x_resources[] = {
 109         [0] = {
 110                 .start  = SDP2430_CS0_BASE,
 111                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 112                 .flags  = IORESOURCE_MEM,
 113         },
 114         [1] = {
 115                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 116                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 117                 .flags  = IORESOURCE_IRQ,
 118         },
 119 };
 120
 121 static struct platform_device sdp2430_smc91x_device = {
 122         .name           = "smc91x",
 123         .id             = -1,
 124         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 125         .resource       = sdp2430_smc91x_resources,
 126 };
 127
 128 /*
 129  * Key mapping for 2430 SDP board
 130  */
 131
 132 static int sdp2430_keymap[] = {
 133         KEY(0, 0, KEY_LEFT),
 134         KEY(0, 1, KEY_RIGHT),
 135         KEY(0, 2, KEY_A),
 136         KEY(0, 3, KEY_B),
 137         KEY(0, 4, KEY_C),
 138         KEY(1, 0, KEY_DOWN),
 139         KEY(1, 1, KEY_UP),
 140         KEY(1, 2, KEY_E),
 141         KEY(1, 3, KEY_F),
 142         KEY(1, 4, KEY_G),
 143         KEY(2, 0, KEY_ENTER),
 144         KEY(2, 1, KEY_I),
 145         KEY(2, 2, KEY_J),
 146         KEY(2, 3, KEY_K),
 147         KEY(2, 4, KEY_3),
 148         KEY(3, 0, KEY_M),
 149         KEY(3, 1, KEY_N),
 150         KEY(3, 2, KEY_O),
 151         KEY(3, 3, KEY_P),
 152         KEY(3, 4, KEY_Q),
 153         KEY(4, 0, KEY_R),
 154         KEY(4, 1, KEY_4),
 155         KEY(4, 2, KEY_T),
 156         KEY(4, 3, KEY_U),
 157         KEY(4, 4, KEY_D),
 158         KEY(5, 0, KEY_V),
 159         KEY(5, 1, KEY_W),
 160         KEY(5, 2, KEY_L),
 161         KEY(5, 3, KEY_S),
 162         KEY(5, 4, KEY_H),
 163         0
 164 };
 165
 166 static struct omap_kp_platform_data sdp2430_kp_data = {
 167         .rows           = 5,
 168         .cols           = 6,
 169         .keymap         = sdp2430_keymap,
 170         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 171         .rep            = 1,
 172 };
 173
 174 static struct platform_device sdp2430_kp_device = {
 175         .name           = "omap_twl4030keypad",
 176         .id             = -1,
 177         .dev            = {
 178                 .platform_data  = &sdp2430_kp_data,
 179         },
 180 };
 181
 182 static struct platform_device *sdp2430_devices[] __initdata = {
 183         &sdp2430_smc91x_device,
 184         &sdp2430_flash_device,
 185         &sdp2430_kp_device,
 186 };
 187
 188 static void ads7846_dev_init(void)
 189 {
 190         if (omap_request_gpio(TS_GPIO) < 0)
 191                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 192
 193         omap_set_gpio_direction(TS_GPIO, 1);
 194
 195         omap_set_gpio_debounce(TS_GPIO, 1);
 196         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 197 }
 198
 199 static int ads7846_get_pendown_state(void)
 200 {
 201         return !omap_get_gpio_datain(TS_GPIO);
 202 }
 203
 204 static struct ads7846_platform_data tsc2046_config __initdata = {
 205         .get_pendown_state = ads7846_get_pendown_state,
 206         .keep_vref_on      = 1,
 207 };
 208
 209 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 210         .turbo_mode     = 0,
 211         .single_channel = 0,  /* 0: slave, 1: master */
 212 };
 213
 214 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 215         [0] = {
 216                 /*
 217                  * TSC2046 operates at a max freqency of 2MHz, so
 218                  * operate slightly below at 1.5MHz
 219                  */
 220                 .modalias        = "ads7846",
 221                 .bus_num         = 1,
 222                 .chip_select     = 0,
 223                 .max_speed_hz    = 1500000,
 224                 .controller_data = &tsc2046_mcspi_config,
 225                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 226                 .platform_data   = &tsc2046_config,
 227         },
 228 };
 229
 230 static inline void __init sdp2430_init_smc91x(void)
 231 {
 232         int eth_cs;
 233         unsigned long cs_mem_base;
 234         unsigned int rate;
 235         struct clk *l3ck;
 236
 237         eth_cs = SDP2430_SMC91X_CS;
 238
 239         l3ck = clk_get(NULL, "core_l3_ck");
 240         if (IS_ERR(l3ck))
 241                 rate = 100000000;
 242         else
 243                 rate = clk_get_rate(l3ck);
 244
 245         /* Make sure CS1 timings are correct, for 2430 always muxed */
 246         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 247
 248         if (rate >= 160000000) {
 249                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 250                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 251                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 252                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 253                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 254         } else if (rate >= 130000000) {
 255                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 256                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 257                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 258                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 259                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 260         } else { /* rate = 100000000 */
 261                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 262                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 263                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 264                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 265                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 266         }
 267
 268         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 269                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 270                 return;
 271         }
 272
 273         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 274         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 275         udelay(100);
 276
 277         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 278                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 279                         OMAP24XX_ETHR_GPIO_IRQ);
 280                 gpmc_cs_free(eth_cs);
 281                 return;
 282         }
 283         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 284
 285 }
 286
 287 static void __init omap_2430sdp_init_irq(void)
 288 {
 289         omap2_init_common_hw();
 290         omap_init_irq();
 291         omap_gpio_init();
 292         sdp2430_init_smc91x();
 293 }
 294
 295 static struct omap_uart_config sdp2430_uart_config __initdata = {
 296         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 297 };
 298
 299 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 300         {OMAP_TAG_UART, &sdp2430_uart_config},
 301 };
 302
 303 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
 304
 305 #define OMAP2_I2C_BASE1         0x48070000
 306 #define OMAP2_I2C_BASE2         0x48072000
 307 #define OMAP2_I2C_INT1          56
 308 #define OMAP2_I2C_INT2          57
 309
 310 static u32 omap2_i2c1_clkrate   = 400;
 311 static u32 omap2_i2c2_clkrate   = 2600;
 312
 313 static struct resource i2c_resources1[] = {
 314         {
 315                 .start  = OMAP2_I2C_BASE1,
 316                 .end    = OMAP2_I2C_BASE1 + 0x3f,
 317                 .flags  = IORESOURCE_MEM,
 318         },
 319         {
 320                 .start  = OMAP2_I2C_INT1,
 321                 .flags  = IORESOURCE_IRQ,
 322         },
 323 };
 324
 325 static struct resource i2c_resources2[] = {
 326         {
 327                 .start  = OMAP2_I2C_BASE2,
 328                 .end    = OMAP2_I2C_BASE2 + 0x3f,
 329                 .flags  = IORESOURCE_MEM,
 330         },
 331         {
 332                 .start  = OMAP2_I2C_INT2,
 333                 .flags  = IORESOURCE_IRQ,
 334         },
 335 };
 336
 337 static struct platform_device omap_i2c_device1 = {
 338         .name           = "i2c_omap",
 339         .id             = 1,
 340         .num_resources  = ARRAY_SIZE(i2c_resources1),
 341         .resource       = i2c_resources1,
 342         .dev            = {
 343                 .platform_data  = &omap2_i2c1_clkrate,
 344         },
 345 };
 346
 347 static struct platform_device omap_i2c_device2 = {
 348         .name           = "i2c_omap",
 349         .id             = 2,
 350         .num_resources  = ARRAY_SIZE(i2c_resources2),
 351         .resource       = i2c_resources2,
 352         .dev            = {
 353                 .platform_data  = &omap2_i2c2_clkrate,
 354         },
 355 };
 356
 357 static void omap_init_i2c(void)
 358 {
 359         (void) platform_device_register(&omap_i2c_device2);
 360         (void) platform_device_register(&omap_i2c_device1);
 361 }
 362
 363 #else
 364
 365 static void omap_init_i2c(void) {}
 366
 367 #endif
 368
 369 static int __init omap2430_i2c_init(void)
 370 {
 371         omap_init_i2c();
 372         return 0;
 373 }
 374
 375 extern void __init sdp2430_flash_init(void);
 376 extern void __init sdp2430_usb_init(void);
 377
 378 static void __init omap_2430sdp_init(void)
 379 {
 380         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 381         omap_board_config = sdp2430_config;
 382         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 383         omap_serial_init();
 384
 385         sdp2430_flash_init();
 386         sdp2430_usb_init();
 387
 388         spi_register_board_info(sdp2430_spi_board_info,
 389                                 ARRAY_SIZE(sdp2430_spi_board_info));
 390         ads7846_dev_init();
 391 }
 392
 393 static void __init omap_2430sdp_map_io(void)
 394 {
 395         omap2_map_common_io();
 396 }
 397
 398 arch_initcall(omap2430_i2c_init);
 399
 400 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 401         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 402         .phys_io        = 0x48000000,
 403         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 404         .boot_params    = 0x80000100,
 405         .map_io         = omap_2430sdp_map_io,
 406         .init_irq       = omap_2430sdp_init_irq,
 407         .init_machine   = omap_2430sdp_init,
 408         .timer          = &omap_timer,
 409 MACHINE_END