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/i2c/twl4030.h>
  24 #include <linux/err.h>
  25 #include <linux/clk.h>
  26 #include <linux/io.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/ads7846.h>
  29
  30 #include <mach/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/flash.h>
  35
  36 #include <mach/gpio.h>
  37 #include <mach/mux.h>
  38 #include <mach/board.h>
  39 #include <mach/usb.h>
  40 #include <mach/common.h>
  41 #include <mach/gpmc.h>
  42 #include <mach/mcspi.h>
  43
  44
  45 #include "mmc-twl4030.h"
  46
  47 #define SDP2430_CS0_BASE        0x04000000
  48 #define SDP2430_FLASH_CS        0
  49 #define SDP2430_SMC91X_CS       5
  50 #define SDP2430_ETHR_GPIO_IRQ           149
  51
  52 /* GPIO used for TSC2046 (touchscreen)
  53  *
  54  * Also note that the tsc2046 is the same silicon as the ads7846, so
  55  * that driver is used for the touchscreen. */
  56 #define TS_GPIO                 24
  57
  58 #define TWL4030_MSECURE_GPIO    118
  59 #define SECONDARY_LCD_GPIO      147
  60
  61 extern void sdp2430_flash_init(void);
  62
  63 static struct mtd_partition sdp2430_partitions[] = {
  64         /* bootloader (U-Boot, etc) in first sector */
  65         {
  66                 .name           = "bootloader",
  67                 .offset         = 0,
  68                 .size           = SZ_256K,
  69                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  70          },
  71         /* bootloader params in the next sector */
  72         {
  73                 .name           = "params",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = SZ_128K,
  76                 .mask_flags     = 0,
  77          },
  78         /* kernel */
  79         {
  80                 .name           = "kernel",
  81                 .offset         = MTDPART_OFS_APPEND,
  82                 .size           = SZ_2M,
  83                 .mask_flags     = 0
  84         },
  85         /* file system */
  86         {
  87                 .name           = "filesystem",
  88                 .offset         = MTDPART_OFS_APPEND,
  89                 .size           = MTDPART_SIZ_FULL,
  90                 .mask_flags     = 0
  91         }
  92 };
  93
  94 static struct flash_platform_data sdp2430_flash_data = {
  95         .map_name       = "cfi_probe",
  96         .width          = 2,
  97         .parts          = sdp2430_partitions,
  98         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  99 };
 100
 101 static struct resource sdp2430_flash_resource = {
 102         .start          = SDP2430_CS0_BASE,
 103         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
 104         .flags          = IORESOURCE_MEM,
 105 };
 106
 107 static struct platform_device sdp2430_flash_device = {
 108         .name           = "omapflash",
 109         .id             = 0,
 110         .dev = {
 111                 .platform_data  = &sdp2430_flash_data,
 112         },
 113         .num_resources  = 1,
 114         .resource       = &sdp2430_flash_resource,
 115 };
 116
 117 static struct resource sdp2430_smc91x_resources[] = {
 118         [0] = {
 119                 .start  = SDP2430_CS0_BASE,
 120                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 121                 .flags  = IORESOURCE_MEM,
 122         },
 123         [1] = {
 124                 .start  = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 125                 .end    = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 126                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 127         },
 128 };
 129
 130 static struct platform_device sdp2430_lcd_device = {
 131         .name           = "sdp2430_lcd",
 132         .id             = -1,
 133 };
 134
 135 static struct platform_device sdp2430_smc91x_device = {
 136         .name           = "smc91x",
 137         .id             = -1,
 138         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 139         .resource       = sdp2430_smc91x_resources,
 140 };
 141
 142 /*
 143  * Key mapping for 2430 SDP board
 144  */
 145
 146 static int sdp2430_keymap[] = {
 147         KEY(0, 0, KEY_LEFT),
 148         KEY(0, 1, KEY_RIGHT),
 149         KEY(0, 2, KEY_A),
 150         KEY(0, 3, KEY_B),
 151         KEY(0, 4, KEY_C),
 152         KEY(1, 0, KEY_DOWN),
 153         KEY(1, 1, KEY_UP),
 154         KEY(1, 2, KEY_E),
 155         KEY(1, 3, KEY_F),
 156         KEY(1, 4, KEY_G),
 157         KEY(2, 0, KEY_ENTER),
 158         KEY(2, 1, KEY_I),
 159         KEY(2, 2, KEY_J),
 160         KEY(2, 3, KEY_K),
 161         KEY(2, 4, KEY_3),
 162         KEY(3, 0, KEY_M),
 163         KEY(3, 1, KEY_N),
 164         KEY(3, 2, KEY_O),
 165         KEY(3, 3, KEY_P),
 166         KEY(3, 4, KEY_Q),
 167         KEY(4, 0, KEY_R),
 168         KEY(4, 1, KEY_4),
 169         KEY(4, 2, KEY_T),
 170         KEY(4, 3, KEY_U),
 171         KEY(4, 4, KEY_D),
 172         KEY(5, 0, KEY_V),
 173         KEY(5, 1, KEY_W),
 174         KEY(5, 2, KEY_L),
 175         KEY(5, 3, KEY_S),
 176         KEY(5, 4, KEY_H),
 177         0
 178 };
 179
 180 static struct twl4030_keypad_data sdp2430_kp_data = {
 181         .rows           = 5,
 182         .cols           = 6,
 183         .keymap         = sdp2430_keymap,
 184         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 185         .rep            = 1,
 186 };
 187
 188 static int __init msecure_init(void)
 189 {
 190         int ret = 0;
 191
 192 #ifdef CONFIG_RTC_DRV_TWL4030
 193         ret = gpio_request(TWL4030_MSECURE_GPIO, "msecure");
 194         if (ret < 0) {
 195                 printk(KERN_ERR "msecure_init: can't reserve GPIO:%d !\n",
 196                         TWL4030_MSECURE_GPIO);
 197                 goto out;
 198         }
 199         /*
 200          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 201          * Make msecure line high in order to change the TWL4030 RTC time
 202          * and calender registers.
 203          */
 204         gpio_direction_output(TWL4030_MSECURE_GPIO, 1);
 205 out:
 206 #endif
 207
 208         return ret;
 209 }
 210
 211 static struct platform_device *sdp2430_devices[] __initdata = {
 212         &sdp2430_smc91x_device,
 213         &sdp2430_flash_device,
 214         &sdp2430_lcd_device,
 215 };
 216
 217 static void ads7846_dev_init(void)
 218 {
 219         if (gpio_request(TS_GPIO, "ads7846 irq") < 0)
 220                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 221
 222         gpio_direction_input(TS_GPIO);
 223
 224         omap_set_gpio_debounce(TS_GPIO, 1);
 225         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 226 }
 227
 228 static int ads7846_get_pendown_state(void)
 229 {
 230         return !gpio_get_value(TS_GPIO);
 231 }
 232
 233 static struct ads7846_platform_data tsc2046_config __initdata = {
 234         .get_pendown_state = ads7846_get_pendown_state,
 235         .keep_vref_on      = 1,
 236 };
 237
 238 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 239         .turbo_mode     = 0,
 240         .single_channel = 0,  /* 0: slave, 1: master */
 241 };
 242
 243 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 244         .ctrl_name      = "internal",
 245 };
 246
 247 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 248         [0] = {
 249                 /*
 250                  * TSC2046 operates at a max freqency of 2MHz, so
 251                  * operate slightly below at 1.5MHz
 252                  */
 253                 .modalias        = "ads7846",
 254                 .bus_num         = 1,
 255                 .chip_select     = 0,
 256                 .max_speed_hz    = 1500000,
 257                 .controller_data = &tsc2046_mcspi_config,
 258                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 259                 .platform_data   = &tsc2046_config,
 260         },
 261 };
 262
 263 static inline void __init sdp2430_init_smc91x(void)
 264 {
 265         int eth_cs;
 266         unsigned long cs_mem_base;
 267         unsigned int rate;
 268         struct clk *gpmc_fck;
 269
 270         eth_cs = SDP2430_SMC91X_CS;
 271
 272         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 273         if (IS_ERR(gpmc_fck)) {
 274                 WARN_ON(1);
 275                 return;
 276         }
 277
 278         clk_enable(gpmc_fck);
 279         rate = clk_get_rate(gpmc_fck);
 280
 281         /* Make sure CS1 timings are correct, for 2430 always muxed */
 282         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 283
 284         if (rate >= 160000000) {
 285                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 286                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 287                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 288                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 289                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 290         } else if (rate >= 130000000) {
 291                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 292                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 293                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 294                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 295                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 296         } else { /* rate = 100000000 */
 297                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 298                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 299                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 300                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 301                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 302         }
 303
 304         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 305                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 306                 goto out;
 307         }
 308
 309         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 310         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 311         udelay(100);
 312
 313         if (gpio_request(SDP2430_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 314                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 315                         SDP2430_ETHR_GPIO_IRQ);
 316                 gpmc_cs_free(eth_cs);
 317                 goto out;
 318         }
 319         gpio_direction_input(SDP2430_ETHR_GPIO_IRQ);
 320
 321 out:
 322         clk_disable(gpmc_fck);
 323         clk_put(gpmc_fck);
 324 }
 325
 326 static void __init omap_2430sdp_init_irq(void)
 327 {
 328         omap2_init_common_hw(NULL);
 329         omap_init_irq();
 330         omap_gpio_init();
 331         sdp2430_init_smc91x();
 332 }
 333
 334 static struct omap_uart_config sdp2430_uart_config __initdata = {
 335         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 336 };
 337
 338 static
 339 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 340         .console_uart = 1,
 341         .console_speed = 115200,
 342 };
 343
 344 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 345         {OMAP_TAG_UART, &sdp2430_uart_config},
 346         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 347         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 348 };
 349
 350
 351 static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
 352         .gpio_base      = OMAP_MAX_GPIO_LINES,
 353         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 354         .irq_end        = TWL4030_GPIO_IRQ_END,
 355 };
 356
 357 static struct twl4030_usb_data sdp2430_usb_data = {
 358         .usb_mode       = T2_USB_MODE_ULPI,
 359 };
 360
 361 static struct twl4030_madc_platform_data sdp2430_madc_data = {
 362         .irq_line       = 1,
 363 };
 364
 365 static struct twl4030_platform_data sdp2430_twldata = {
 366         .irq_base       = TWL4030_IRQ_BASE,
 367         .irq_end        = TWL4030_IRQ_END,
 368
 369         /* platform_data for children goes here */
 370         .gpio           = &sdp2430_gpio_data,
 371         .madc           = &sdp2430_madc_data,
 372         .keypad         = &sdp2430_kp_data,
 373         .usb            = &sdp2430_usb_data,
 374 };
 375
 376 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
 377         {
 378                 I2C_BOARD_INFO("twl4030", 0x48),
 379                 .flags = I2C_CLIENT_WAKE,
 380                 .irq = INT_24XX_SYS_NIRQ,
 381                 .platform_data = &sdp2430_twldata,
 382         },
 383 };
 384
 385 static int __init omap2430_i2c_init(void)
 386 {
 387         omap_register_i2c_bus(1, 400, NULL, 0);
 388         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
 389                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
 390         return 0;
 391 }
 392
 393 static struct twl4030_hsmmc_info mmc[] __initdata = {
 394         {
 395                 .mmc            = 1,
 396                 .wires          = 4,
 397                 .gpio_cd        = -EINVAL,
 398                 .gpio_wp        = -EINVAL,
 399                 .ext_clock      = 1,
 400         },
 401         {}      /* Terminator */
 402 };
 403
 404 static void __init omap_2430sdp_init(void)
 405 {
 406         omap2430_i2c_init();
 407
 408         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 409         omap_board_config = sdp2430_config;
 410         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 411         omap_serial_init();
 412
 413         msecure_init();
 414
 415         sdp2430_flash_init();
 416         usb_musb_init();
 417
 418         spi_register_board_info(sdp2430_spi_board_info,
 419                                 ARRAY_SIZE(sdp2430_spi_board_info));
 420         ads7846_dev_init();
 421         twl4030_mmc_init(mmc);
 422
 423         /* turn off secondary LCD backlight */
 424         gpio_direction_output(SECONDARY_LCD_GPIO, 0);
 425 }
 426
 427 static void __init omap_2430sdp_map_io(void)
 428 {
 429         omap2_set_globals_243x();
 430         omap2_map_common_io();
 431 }
 432
 433 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 434         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 435         .phys_io        = 0x48000000,
 436         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 437         .boot_params    = 0x80000100,
 438         .map_io         = omap_2430sdp_map_io,
 439         .init_irq       = omap_2430sdp_init_irq,
 440         .init_machine   = omap_2430sdp_init,
 441         .timer          = &omap_timer,
 442 MACHINE_END