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 #include <linux/i2c/twl4030-rtc.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/flash.h>
  34
  35 #include <mach/gpio.h>
  36 #include <mach/mux.h>
  37 #include <mach/board.h>
  38 #include <mach/usb-musb.h>
  39 #include <mach/hsmmc.h>
  40 #include <mach/common.h>
  41 #include <mach/keypad.h>
  42 #include <mach/gpmc.h>
  43 #include <mach/mcspi.h>
  44
  45 #include <asm/io.h>
  46
  47 #define SDP2430_FLASH_CS        0
  48 #define SDP2430_SMC91X_CS       5
  49
  50 /* GPIO used for TSC2046 (touchscreen)
  51  *
  52  * Also note that the tsc2046 is the same silicon as the ads7846, so
  53  * that driver is used for the touchscreen. */
  54 #define TS_GPIO                 24
  55
  56 #define TWL4030_MSECURE_GPIO    118
  57 #define SECONDARY_LCD_GPIO      147
  58
  59 static struct mtd_partition sdp2430_partitions[] = {
  60         /* bootloader (U-Boot, etc) in first sector */
  61         {
  62                 .name           = "bootloader",
  63                 .offset         = 0,
  64                 .size           = SZ_256K,
  65                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  66          },
  67         /* bootloader params in the next sector */
  68         {
  69                 .name           = "params",
  70                 .offset         = MTDPART_OFS_APPEND,
  71                 .size           = SZ_128K,
  72                 .mask_flags     = 0,
  73          },
  74         /* kernel */
  75         {
  76                 .name           = "kernel",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = SZ_2M,
  79                 .mask_flags     = 0
  80         },
  81         /* file system */
  82         {
  83                 .name           = "filesystem",
  84                 .offset         = MTDPART_OFS_APPEND,
  85                 .size           = MTDPART_SIZ_FULL,
  86                 .mask_flags     = 0
  87         }
  88 };
  89
  90 static struct flash_platform_data sdp2430_flash_data = {
  91         .map_name       = "cfi_probe",
  92         .width          = 2,
  93         .parts          = sdp2430_partitions,
  94         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  95 };
  96
  97 static struct resource sdp2430_flash_resource = {
  98         .start          = SDP2430_CS0_BASE,
  99         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
 100         .flags          = IORESOURCE_MEM,
 101 };
 102
 103 static struct platform_device sdp2430_flash_device = {
 104         .name           = "omapflash",
 105         .id             = 0,
 106         .dev = {
 107                 .platform_data  = &sdp2430_flash_data,
 108         },
 109         .num_resources  = 1,
 110         .resource       = &sdp2430_flash_resource,
 111 };
 112
 113 static struct resource sdp2430_smc91x_resources[] = {
 114         [0] = {
 115                 .start  = SDP2430_CS0_BASE,
 116                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 117                 .flags  = IORESOURCE_MEM,
 118         },
 119         [1] = {
 120                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 121                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 122                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 123         },
 124 };
 125
 126 static struct platform_device sdp2430_lcd_device = {
 127         .name           = "sdp2430_lcd",
 128         .id             = -1,
 129 };
 130
 131 static struct platform_device sdp2430_smc91x_device = {
 132         .name           = "smc91x",
 133         .id             = -1,
 134         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 135         .resource       = sdp2430_smc91x_resources,
 136 };
 137
 138 /*
 139  * Key mapping for 2430 SDP board
 140  */
 141
 142 static int sdp2430_keymap[] = {
 143         KEY(0, 0, KEY_LEFT),
 144         KEY(0, 1, KEY_RIGHT),
 145         KEY(0, 2, KEY_A),
 146         KEY(0, 3, KEY_B),
 147         KEY(0, 4, KEY_C),
 148         KEY(1, 0, KEY_DOWN),
 149         KEY(1, 1, KEY_UP),
 150         KEY(1, 2, KEY_E),
 151         KEY(1, 3, KEY_F),
 152         KEY(1, 4, KEY_G),
 153         KEY(2, 0, KEY_ENTER),
 154         KEY(2, 1, KEY_I),
 155         KEY(2, 2, KEY_J),
 156         KEY(2, 3, KEY_K),
 157         KEY(2, 4, KEY_3),
 158         KEY(3, 0, KEY_M),
 159         KEY(3, 1, KEY_N),
 160         KEY(3, 2, KEY_O),
 161         KEY(3, 3, KEY_P),
 162         KEY(3, 4, KEY_Q),
 163         KEY(4, 0, KEY_R),
 164         KEY(4, 1, KEY_4),
 165         KEY(4, 2, KEY_T),
 166         KEY(4, 3, KEY_U),
 167         KEY(4, 4, KEY_D),
 168         KEY(5, 0, KEY_V),
 169         KEY(5, 1, KEY_W),
 170         KEY(5, 2, KEY_L),
 171         KEY(5, 3, KEY_S),
 172         KEY(5, 4, KEY_H),
 173         0
 174 };
 175
 176 static struct omap_kp_platform_data sdp2430_kp_data = {
 177         .rows           = 5,
 178         .cols           = 6,
 179         .keymap         = sdp2430_keymap,
 180         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 181         .rep            = 1,
 182 };
 183
 184 static struct platform_device sdp2430_kp_device = {
 185         .name           = "omap_twl4030keypad",
 186         .id             = -1,
 187         .dev            = {
 188                 .platform_data  = &sdp2430_kp_data,
 189         },
 190 };
 191
 192 static int twl4030_rtc_init(void)
 193 {
 194         int ret = 0;
 195
 196         ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
 197         if (ret < 0) {
 198                 printk(KERN_ERR "twl4030_rtc_init: can't reserve GPIO:%d !\n",
 199                         TWL4030_MSECURE_GPIO);
 200                 goto out;
 201         }
 202         /*
 203          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 204          * Make msecure line high in order to change the TWL4030 RTC time
 205          * and calender registers.
 206          */
 207         omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);       /*dir out */
 208         omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
 209 out:
 210         return ret;
 211 }
 212
 213 static void twl4030_rtc_exit(void)
 214 {
 215         omap_free_gpio(TWL4030_MSECURE_GPIO);
 216 }
 217
 218 static struct twl4030rtc_platform_data sdp2430_twl4030rtc_data = {
 219         .init = &twl4030_rtc_init,
 220         .exit = &twl4030_rtc_exit,
 221 };
 222
 223 static struct platform_device sdp2430_twl4030rtc_device = {
 224         .name           = "twl4030_rtc",
 225         .id             = -1,
 226         .dev            = {
 227                 .platform_data  = &sdp2430_twl4030rtc_data,
 228         },
 229 };
 230
 231 static struct platform_device *sdp2430_devices[] __initdata = {
 232         &sdp2430_smc91x_device,
 233         &sdp2430_flash_device,
 234         &sdp2430_kp_device,
 235         &sdp2430_lcd_device,
 236         &sdp2430_twl4030rtc_device,
 237 };
 238
 239 static void ads7846_dev_init(void)
 240 {
 241         if (omap_request_gpio(TS_GPIO) < 0)
 242                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 243
 244         omap_set_gpio_direction(TS_GPIO, 1);
 245
 246         omap_set_gpio_debounce(TS_GPIO, 1);
 247         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 248 }
 249
 250 static int ads7846_get_pendown_state(void)
 251 {
 252         return !omap_get_gpio_datain(TS_GPIO);
 253 }
 254
 255 static struct ads7846_platform_data tsc2046_config __initdata = {
 256         .get_pendown_state = ads7846_get_pendown_state,
 257         .keep_vref_on      = 1,
 258 };
 259
 260 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 261         .turbo_mode     = 0,
 262         .single_channel = 0,  /* 0: slave, 1: master */
 263 };
 264
 265 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 266         .ctrl_name      = "internal",
 267 };
 268
 269 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 270         [0] = {
 271                 /*
 272                  * TSC2046 operates at a max freqency of 2MHz, so
 273                  * operate slightly below at 1.5MHz
 274                  */
 275                 .modalias        = "ads7846",
 276                 .bus_num         = 1,
 277                 .chip_select     = 0,
 278                 .max_speed_hz    = 1500000,
 279                 .controller_data = &tsc2046_mcspi_config,
 280                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 281                 .platform_data   = &tsc2046_config,
 282         },
 283 };
 284
 285 static inline void __init sdp2430_init_smc91x(void)
 286 {
 287         int eth_cs;
 288         unsigned long cs_mem_base;
 289         unsigned int rate;
 290         struct clk *gpmc_fck;
 291
 292         eth_cs = SDP2430_SMC91X_CS;
 293
 294         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 295         if (IS_ERR(gpmc_fck)) {
 296                 WARN_ON(1);
 297                 return;
 298         }
 299
 300         clk_enable(gpmc_fck);
 301         rate = clk_get_rate(gpmc_fck);
 302
 303         /* Make sure CS1 timings are correct, for 2430 always muxed */
 304         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 305
 306         if (rate >= 160000000) {
 307                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 308                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 309                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 310                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 311                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 312         } else if (rate >= 130000000) {
 313                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 314                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 315                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 316                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 318         } else { /* rate = 100000000 */
 319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 320                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 321                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 322                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 324         }
 325
 326         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 327                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 328                 goto out;
 329         }
 330
 331         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 332         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 333         udelay(100);
 334
 335         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 336                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 337                         OMAP24XX_ETHR_GPIO_IRQ);
 338                 gpmc_cs_free(eth_cs);
 339                 goto out;
 340         }
 341         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 342
 343 out:
 344         clk_disable(gpmc_fck);
 345         clk_put(gpmc_fck);
 346 }
 347
 348 static void __init omap_2430sdp_init_irq(void)
 349 {
 350         omap2_init_common_hw(NULL);
 351         omap_init_irq();
 352         omap_gpio_init();
 353         sdp2430_init_smc91x();
 354 }
 355
 356 static struct omap_uart_config sdp2430_uart_config __initdata = {
 357         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 358 };
 359
 360 static
 361 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 362         .console_uart = 1,
 363         .console_speed = 115200,
 364 };
 365
 366 static struct omap_mmc_config sdp2430_mmc_config __initdata = {
 367         .mmc [0] = {
 368                 .enabled        = 1,
 369                 .wire4          = 1,
 370         },
 371 };
 372
 373 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 374         {OMAP_TAG_UART, &sdp2430_uart_config},
 375         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 376         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 377         {OMAP_TAG_MMC,  &sdp2430_mmc_config},
 378 };
 379
 380 static int __init omap2430_i2c_init(void)
 381 {
 382         /*
 383          * Registering bus 2 first to avoid twl4030 misbehaving as 2430SDP
 384          * has twl4030 on bus 2
 385          */
 386         omap_register_i2c_bus(2, 2600, NULL, 0);
 387         omap_register_i2c_bus(1, 400, NULL, 0);
 388         return 0;
 389 }
 390
 391 static void __init omap_2430sdp_init(void)
 392 {
 393         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 394         omap_board_config = sdp2430_config;
 395         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 396         omap_serial_init();
 397
 398         sdp2430_flash_init();
 399         usb_musb_init();
 400
 401         spi_register_board_info(sdp2430_spi_board_info,
 402                                 ARRAY_SIZE(sdp2430_spi_board_info));
 403         ads7846_dev_init();
 404         hsmmc_init();
 405
 406         /* turn off secondary LCD backlight */
 407         omap_set_gpio_direction(SECONDARY_LCD_GPIO, 0);
 408         omap_set_gpio_dataout(SECONDARY_LCD_GPIO, 0);
 409 }
 410
 411 static void __init omap_2430sdp_map_io(void)
 412 {
 413         omap2_set_globals_243x();
 414         omap2_map_common_io();
 415 }
 416
 417 arch_initcall(omap2430_i2c_init);
 418
 419 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 420         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 421         .phys_io        = 0x48000000,
 422         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 423         .boot_params    = 0x80000100,
 424         .map_io         = omap_2430sdp_map_io,
 425         .init_irq       = omap_2430sdp_init_irq,
 426         .init_machine   = omap_2430sdp_init,
 427         .timer          = &omap_timer,
 428 MACHINE_END