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
  42 #include <asm/io.h>
  43
  44 #define SDP2430_FLASH_CS        0
  45 #define SDP2430_SMC91X_CS       5
  46
  47 /* GPIO used for TSC2046 (touchscreen)
  48  *
  49  * Also note that the tsc2046 is the same silicon as the ads7846, so
  50  * that driver is used for the touchscreen. */
  51 #define TS_GPIO                 24
  52
  53 static struct mtd_partition sdp2430_partitions[] = {
  54         /* bootloader (U-Boot, etc) in first sector */
  55         {
  56                 .name           = "bootloader",
  57                 .offset         = 0,
  58                 .size           = SZ_256K,
  59                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  60          },
  61         /* bootloader params in the next sector */
  62         {
  63                 .name           = "params",
  64                 .offset         = MTDPART_OFS_APPEND,
  65                 .size           = SZ_128K,
  66                 .mask_flags     = 0,
  67          },
  68         /* kernel */
  69         {
  70                 .name           = "kernel",
  71                 .offset         = MTDPART_OFS_APPEND,
  72                 .size           = SZ_2M,
  73                 .mask_flags     = 0
  74         },
  75         /* file system */
  76         {
  77                 .name           = "filesystem",
  78                 .offset         = MTDPART_OFS_APPEND,
  79                 .size           = MTDPART_SIZ_FULL,
  80                 .mask_flags     = 0
  81         }
  82 };
  83
  84 static struct flash_platform_data sdp2430_flash_data = {
  85         .map_name       = "cfi_probe",
  86         .width          = 2,
  87         .parts          = sdp2430_partitions,
  88         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  89 };
  90
  91 static struct resource sdp2430_flash_resource = {
  92         .start          = SDP2430_CS0_BASE,
  93         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  94         .flags          = IORESOURCE_MEM,
  95 };
  96
  97 static struct platform_device sdp2430_flash_device = {
  98         .name           = "omapflash",
  99         .id             = 0,
 100         .dev = {
 101                 .platform_data  = &sdp2430_flash_data,
 102         },
 103         .num_resources  = 1,
 104         .resource       = &sdp2430_flash_resource,
 105 };
 106
 107 static struct resource sdp2430_smc91x_resources[] = {
 108         [0] = {
 109                 .start  = SDP2430_CS0_BASE,
 110                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 111                 .flags  = IORESOURCE_MEM,
 112         },
 113         [1] = {
 114                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 115                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 116                 .flags  = IORESOURCE_IRQ,
 117         },
 118 };
 119
 120 static struct platform_device sdp2430_lcd_device = {
 121         .name           = "sdp2430_lcd",
 122         .id             = -1,
 123 };
 124
 125 static struct platform_device sdp2430_smc91x_device = {
 126         .name           = "smc91x",
 127         .id             = -1,
 128         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 129         .resource       = sdp2430_smc91x_resources,
 130 };
 131
 132 /*
 133  * Key mapping for 2430 SDP board
 134  */
 135
 136 static int sdp2430_keymap[] = {
 137         KEY(0, 0, KEY_LEFT),
 138         KEY(0, 1, KEY_RIGHT),
 139         KEY(0, 2, KEY_A),
 140         KEY(0, 3, KEY_B),
 141         KEY(0, 4, KEY_C),
 142         KEY(1, 0, KEY_DOWN),
 143         KEY(1, 1, KEY_UP),
 144         KEY(1, 2, KEY_E),
 145         KEY(1, 3, KEY_F),
 146         KEY(1, 4, KEY_G),
 147         KEY(2, 0, KEY_ENTER),
 148         KEY(2, 1, KEY_I),
 149         KEY(2, 2, KEY_J),
 150         KEY(2, 3, KEY_K),
 151         KEY(2, 4, KEY_3),
 152         KEY(3, 0, KEY_M),
 153         KEY(3, 1, KEY_N),
 154         KEY(3, 2, KEY_O),
 155         KEY(3, 3, KEY_P),
 156         KEY(3, 4, KEY_Q),
 157         KEY(4, 0, KEY_R),
 158         KEY(4, 1, KEY_4),
 159         KEY(4, 2, KEY_T),
 160         KEY(4, 3, KEY_U),
 161         KEY(4, 4, KEY_D),
 162         KEY(5, 0, KEY_V),
 163         KEY(5, 1, KEY_W),
 164         KEY(5, 2, KEY_L),
 165         KEY(5, 3, KEY_S),
 166         KEY(5, 4, KEY_H),
 167         0
 168 };
 169
 170 static struct omap_kp_platform_data sdp2430_kp_data = {
 171         .rows           = 5,
 172         .cols           = 6,
 173         .keymap         = sdp2430_keymap,
 174         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 175         .rep            = 1,
 176 };
 177
 178 static struct platform_device sdp2430_kp_device = {
 179         .name           = "omap_twl4030keypad",
 180         .id             = -1,
 181         .dev            = {
 182                 .platform_data  = &sdp2430_kp_data,
 183         },
 184 };
 185
 186 static struct platform_device *sdp2430_devices[] __initdata = {
 187         &sdp2430_smc91x_device,
 188         &sdp2430_flash_device,
 189         &sdp2430_kp_device,
 190         &sdp2430_lcd_device,
 191 };
 192
 193 static void ads7846_dev_init(void)
 194 {
 195         if (omap_request_gpio(TS_GPIO) < 0)
 196                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 197
 198         omap_set_gpio_direction(TS_GPIO, 1);
 199
 200         omap_set_gpio_debounce(TS_GPIO, 1);
 201         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 202 }
 203
 204 static int ads7846_get_pendown_state(void)
 205 {
 206         return !omap_get_gpio_datain(TS_GPIO);
 207 }
 208
 209 static struct ads7846_platform_data tsc2046_config __initdata = {
 210         .get_pendown_state = ads7846_get_pendown_state,
 211         .keep_vref_on      = 1,
 212 };
 213
 214 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 215         .turbo_mode     = 0,
 216         .single_channel = 0,  /* 0: slave, 1: master */
 217 };
 218
 219 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 220         .ctrl_name      = "internal",
 221 };
 222
 223 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 224         [0] = {
 225                 /*
 226                  * TSC2046 operates at a max freqency of 2MHz, so
 227                  * operate slightly below at 1.5MHz
 228                  */
 229                 .modalias        = "ads7846",
 230                 .bus_num         = 1,
 231                 .chip_select     = 0,
 232                 .max_speed_hz    = 1500000,
 233                 .controller_data = &tsc2046_mcspi_config,
 234                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 235                 .platform_data   = &tsc2046_config,
 236         },
 237 };
 238
 239 static inline void __init sdp2430_init_smc91x(void)
 240 {
 241         int eth_cs;
 242         unsigned long cs_mem_base;
 243         unsigned int rate;
 244         struct clk *l3ck;
 245
 246         eth_cs = SDP2430_SMC91X_CS;
 247
 248         l3ck = clk_get(NULL, "core_l3_ck");
 249         if (IS_ERR(l3ck))
 250                 rate = 100000000;
 251         else
 252                 rate = clk_get_rate(l3ck);
 253
 254         /* Make sure CS1 timings are correct, for 2430 always muxed */
 255         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 256
 257         if (rate >= 160000000) {
 258                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 259                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 260                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 261                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 262                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 263         } else if (rate >= 130000000) {
 264                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 265                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 266                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 267                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 268                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 269         } else { /* rate = 100000000 */
 270                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 271                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 272                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 273                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 274                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 275         }
 276
 277         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 278                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 279                 return;
 280         }
 281
 282         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 283         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 284         udelay(100);
 285
 286         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 287                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 288                         OMAP24XX_ETHR_GPIO_IRQ);
 289                 gpmc_cs_free(eth_cs);
 290                 return;
 291         }
 292         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 293
 294 }
 295
 296 static void __init omap_2430sdp_init_irq(void)
 297 {
 298         omap2_init_common_hw();
 299         omap_init_irq();
 300         omap_gpio_init();
 301         sdp2430_init_smc91x();
 302 }
 303
 304 static struct omap_uart_config sdp2430_uart_config __initdata = {
 305         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 306 };
 307
 308 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 309         {OMAP_TAG_UART, &sdp2430_uart_config},
 310         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 311 };
 312
 313 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
 314
 315 #define OMAP2_I2C_BASE1         0x48070000
 316 #define OMAP2_I2C_BASE2         0x48072000
 317 #define OMAP2_I2C_INT1          56
 318 #define OMAP2_I2C_INT2          57
 319
 320 static u32 omap2_i2c1_clkrate   = 400;
 321 static u32 omap2_i2c2_clkrate   = 2600;
 322
 323 static struct resource i2c_resources1[] = {
 324         {
 325                 .start  = OMAP2_I2C_BASE1,
 326                 .end    = OMAP2_I2C_BASE1 + 0x3f,
 327                 .flags  = IORESOURCE_MEM,
 328         },
 329         {
 330                 .start  = OMAP2_I2C_INT1,
 331                 .flags  = IORESOURCE_IRQ,
 332         },
 333 };
 334
 335 static struct resource i2c_resources2[] = {
 336         {
 337                 .start  = OMAP2_I2C_BASE2,
 338                 .end    = OMAP2_I2C_BASE2 + 0x3f,
 339                 .flags  = IORESOURCE_MEM,
 340         },
 341         {
 342                 .start  = OMAP2_I2C_INT2,
 343                 .flags  = IORESOURCE_IRQ,
 344         },
 345 };
 346
 347 static struct platform_device omap_i2c_device1 = {
 348         .name           = "i2c_omap",
 349         .id             = 1,
 350         .num_resources  = ARRAY_SIZE(i2c_resources1),
 351         .resource       = i2c_resources1,
 352         .dev            = {
 353                 .platform_data  = &omap2_i2c1_clkrate,
 354         },
 355 };
 356
 357 static struct platform_device omap_i2c_device2 = {
 358         .name           = "i2c_omap",
 359         .id             = 2,
 360         .num_resources  = ARRAY_SIZE(i2c_resources2),
 361         .resource       = i2c_resources2,
 362         .dev            = {
 363                 .platform_data  = &omap2_i2c2_clkrate,
 364         },
 365 };
 366
 367 static void omap_init_i2c(void)
 368 {
 369         (void) platform_device_register(&omap_i2c_device2);
 370         (void) platform_device_register(&omap_i2c_device1);
 371 }
 372
 373 #else
 374
 375 static void omap_init_i2c(void) {}
 376
 377 #endif
 378
 379 static int __init omap2430_i2c_init(void)
 380 {
 381         omap_init_i2c();
 382         return 0;
 383 }
 384
 385 extern void __init sdp2430_flash_init(void);
 386 extern void __init sdp2430_usb_init(void);
 387
 388 static void __init omap_2430sdp_init(void)
 389 {
 390         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 391         omap_board_config = sdp2430_config;
 392         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 393         omap_serial_init();
 394
 395         sdp2430_flash_init();
 396         sdp2430_usb_init();
 397
 398         spi_register_board_info(sdp2430_spi_board_info,
 399                                 ARRAY_SIZE(sdp2430_spi_board_info));
 400         ads7846_dev_init();
 401 }
 402
 403 static void __init omap_2430sdp_map_io(void)
 404 {
 405         omap2_map_common_io();
 406 }
 407
 408 arch_initcall(omap2430_i2c_init);
 409
 410 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 411         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 412         .phys_io        = 0x48000000,
 413         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 414         .boot_params    = 0x80000100,
 415         .map_io         = omap_2430sdp_map_io,
 416         .init_irq       = omap_2430sdp_init_irq,
 417         .init_machine   = omap_2430sdp_init,
 418         .timer          = &omap_timer,
 419 MACHINE_END