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-musb.h>
  40 #include <mach/common.h>
  41 #include <mach/keypad.h>
  42 #include <mach/gpmc.h>
  43 #include <mach/mcspi.h>
  44
  45
  46 #include "mmc-twl4030.h"
  47
  48
  49 #define SDP2430_FLASH_CS        0
  50 #define SDP2430_SMC91X_CS       5
  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 static struct mtd_partition sdp2430_partitions[] = {
  62         /* bootloader (U-Boot, etc) in first sector */
  63         {
  64                 .name           = "bootloader",
  65                 .offset         = 0,
  66                 .size           = SZ_256K,
  67                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  68          },
  69         /* bootloader params in the next sector */
  70         {
  71                 .name           = "params",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = SZ_128K,
  74                 .mask_flags     = 0,
  75          },
  76         /* kernel */
  77         {
  78                 .name           = "kernel",
  79                 .offset         = MTDPART_OFS_APPEND,
  80                 .size           = SZ_2M,
  81                 .mask_flags     = 0
  82         },
  83         /* file system */
  84         {
  85                 .name           = "filesystem",
  86                 .offset         = MTDPART_OFS_APPEND,
  87                 .size           = MTDPART_SIZ_FULL,
  88                 .mask_flags     = 0
  89         }
  90 };
  91
  92 static struct flash_platform_data sdp2430_flash_data = {
  93         .map_name       = "cfi_probe",
  94         .width          = 2,
  95         .parts          = sdp2430_partitions,
  96         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  97 };
  98
  99 static struct resource sdp2430_flash_resource = {
 100         .start          = SDP2430_CS0_BASE,
 101         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
 102         .flags          = IORESOURCE_MEM,
 103 };
 104
 105 static struct platform_device sdp2430_flash_device = {
 106         .name           = "omapflash",
 107         .id             = 0,
 108         .dev = {
 109                 .platform_data  = &sdp2430_flash_data,
 110         },
 111         .num_resources  = 1,
 112         .resource       = &sdp2430_flash_resource,
 113 };
 114
 115 static struct resource sdp2430_smc91x_resources[] = {
 116         [0] = {
 117                 .start  = SDP2430_CS0_BASE,
 118                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 119                 .flags  = IORESOURCE_MEM,
 120         },
 121         [1] = {
 122                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 123                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 124                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 125         },
 126 };
 127
 128 static struct platform_device sdp2430_lcd_device = {
 129         .name           = "sdp2430_lcd",
 130         .id             = -1,
 131 };
 132
 133 static struct platform_device sdp2430_smc91x_device = {
 134         .name           = "smc91x",
 135         .id             = -1,
 136         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 137         .resource       = sdp2430_smc91x_resources,
 138 };
 139
 140 /*
 141  * Key mapping for 2430 SDP board
 142  */
 143
 144 static int sdp2430_keymap[] = {
 145         KEY(0, 0, KEY_LEFT),
 146         KEY(0, 1, KEY_RIGHT),
 147         KEY(0, 2, KEY_A),
 148         KEY(0, 3, KEY_B),
 149         KEY(0, 4, KEY_C),
 150         KEY(1, 0, KEY_DOWN),
 151         KEY(1, 1, KEY_UP),
 152         KEY(1, 2, KEY_E),
 153         KEY(1, 3, KEY_F),
 154         KEY(1, 4, KEY_G),
 155         KEY(2, 0, KEY_ENTER),
 156         KEY(2, 1, KEY_I),
 157         KEY(2, 2, KEY_J),
 158         KEY(2, 3, KEY_K),
 159         KEY(2, 4, KEY_3),
 160         KEY(3, 0, KEY_M),
 161         KEY(3, 1, KEY_N),
 162         KEY(3, 2, KEY_O),
 163         KEY(3, 3, KEY_P),
 164         KEY(3, 4, KEY_Q),
 165         KEY(4, 0, KEY_R),
 166         KEY(4, 1, KEY_4),
 167         KEY(4, 2, KEY_T),
 168         KEY(4, 3, KEY_U),
 169         KEY(4, 4, KEY_D),
 170         KEY(5, 0, KEY_V),
 171         KEY(5, 1, KEY_W),
 172         KEY(5, 2, KEY_L),
 173         KEY(5, 3, KEY_S),
 174         KEY(5, 4, KEY_H),
 175         0
 176 };
 177
 178 static struct twl4030_keypad_data sdp2430_kp_data = {
 179         .rows           = 5,
 180         .cols           = 6,
 181         .keymap         = sdp2430_keymap,
 182         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 183         .rep            = 1,
 184 };
 185
 186 static int __init msecure_init(void)
 187 {
 188         int ret = 0;
 189
 190 #ifdef CONFIG_RTC_DRV_TWL4030
 191         ret = gpio_request(TWL4030_MSECURE_GPIO, "msecure");
 192         if (ret < 0) {
 193                 printk(KERN_ERR "msecure_init: can't reserve GPIO:%d !\n",
 194                         TWL4030_MSECURE_GPIO);
 195                 goto out;
 196         }
 197         /*
 198          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 199          * Make msecure line high in order to change the TWL4030 RTC time
 200          * and calender registers.
 201          */
 202         gpio_direction_output(TWL4030_MSECURE_GPIO, 1);
 203 out:
 204 #endif
 205
 206         return ret;
 207 }
 208
 209 static struct platform_device *sdp2430_devices[] __initdata = {
 210         &sdp2430_smc91x_device,
 211         &sdp2430_flash_device,
 212         &sdp2430_lcd_device,
 213 };
 214
 215 static void ads7846_dev_init(void)
 216 {
 217         if (gpio_request(TS_GPIO, "ads7846 irq") < 0)
 218                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 219
 220         gpio_direction_input(TS_GPIO);
 221
 222         omap_set_gpio_debounce(TS_GPIO, 1);
 223         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 224 }
 225
 226 static int ads7846_get_pendown_state(void)
 227 {
 228         return !gpio_get_value(TS_GPIO);
 229 }
 230
 231 static struct ads7846_platform_data tsc2046_config __initdata = {
 232         .get_pendown_state = ads7846_get_pendown_state,
 233         .keep_vref_on      = 1,
 234 };
 235
 236 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 237         .turbo_mode     = 0,
 238         .single_channel = 0,  /* 0: slave, 1: master */
 239 };
 240
 241 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 242         .ctrl_name      = "internal",
 243 };
 244
 245 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 246         [0] = {
 247                 /*
 248                  * TSC2046 operates at a max freqency of 2MHz, so
 249                  * operate slightly below at 1.5MHz
 250                  */
 251                 .modalias        = "ads7846",
 252                 .bus_num         = 1,
 253                 .chip_select     = 0,
 254                 .max_speed_hz    = 1500000,
 255                 .controller_data = &tsc2046_mcspi_config,
 256                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 257                 .platform_data   = &tsc2046_config,
 258         },
 259 };
 260
 261 static inline void __init sdp2430_init_smc91x(void)
 262 {
 263         int eth_cs;
 264         unsigned long cs_mem_base;
 265         unsigned int rate;
 266         struct clk *gpmc_fck;
 267
 268         eth_cs = SDP2430_SMC91X_CS;
 269
 270         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 271         if (IS_ERR(gpmc_fck)) {
 272                 WARN_ON(1);
 273                 return;
 274         }
 275
 276         clk_enable(gpmc_fck);
 277         rate = clk_get_rate(gpmc_fck);
 278
 279         /* Make sure CS1 timings are correct, for 2430 always muxed */
 280         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 281
 282         if (rate >= 160000000) {
 283                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 284                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 285                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 286                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 287                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 288         } else if (rate >= 130000000) {
 289                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 290                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 291                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 292                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 293                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 294         } else { /* rate = 100000000 */
 295                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 296                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 297                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 298                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 299                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 300         }
 301
 302         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 303                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 304                 goto out;
 305         }
 306
 307         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 308         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 309         udelay(100);
 310
 311         if (gpio_request(OMAP24XX_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 312                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 313                         OMAP24XX_ETHR_GPIO_IRQ);
 314                 gpmc_cs_free(eth_cs);
 315                 goto out;
 316         }
 317         gpio_direction_input(OMAP24XX_ETHR_GPIO_IRQ);
 318
 319 out:
 320         clk_disable(gpmc_fck);
 321         clk_put(gpmc_fck);
 322 }
 323
 324 static void __init omap_2430sdp_init_irq(void)
 325 {
 326         omap2_init_common_hw(NULL);
 327         omap_init_irq();
 328         omap_gpio_init();
 329         sdp2430_init_smc91x();
 330 }
 331
 332 static struct omap_uart_config sdp2430_uart_config __initdata = {
 333         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 334 };
 335
 336 static
 337 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 338         .console_uart = 1,
 339         .console_speed = 115200,
 340 };
 341
 342 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 343         {OMAP_TAG_UART, &sdp2430_uart_config},
 344         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 345         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 346 };
 347
 348
 349 static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
 350         .gpio_base      = OMAP_MAX_GPIO_LINES,
 351         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 352         .irq_end        = TWL4030_GPIO_IRQ_END,
 353 };
 354
 355 static struct twl4030_usb_data sdp2430_usb_data = {
 356         .usb_mode       = T2_USB_MODE_ULPI,
 357 };
 358
 359 static struct twl4030_madc_platform_data sdp2430_madc_data = {
 360         .irq_line       = 1,
 361 };
 362
 363 static struct twl4030_platform_data sdp2430_twldata = {
 364         .irq_base       = TWL4030_IRQ_BASE,
 365         .irq_end        = TWL4030_IRQ_END,
 366
 367         /* platform_data for children goes here */
 368         .gpio           = &sdp2430_gpio_data,
 369         .madc           = &sdp2430_madc_data,
 370         .keypad         = &sdp2430_kp_data,
 371         .usb            = &sdp2430_usb_data,
 372 };
 373
 374 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
 375         {
 376                 I2C_BOARD_INFO("twl4030", 0x48),
 377                 .flags = I2C_CLIENT_WAKE,
 378                 .irq = INT_24XX_SYS_NIRQ,
 379                 .platform_data = &sdp2430_twldata,
 380         },
 381 };
 382
 383 static int __init omap2430_i2c_init(void)
 384 {
 385         omap_register_i2c_bus(1, 400, NULL, 0);
 386         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
 387                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
 388         return 0;
 389 }
 390
 391 static struct twl4030_hsmmc_info mmc[] __initdata = {
 392         {
 393                 .mmc            = 1,
 394                 .wires          = 4,
 395                 .gpio_cd        = -EINVAL,
 396                 .gpio_wp        = -EINVAL,
 397                 .ext_clock      = 1,
 398         },
 399         {}      /* Terminator */
 400 };
 401
 402 static void __init omap_2430sdp_init(void)
 403 {
 404         omap2430_i2c_init();
 405
 406         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 407         omap_board_config = sdp2430_config;
 408         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 409         omap_serial_init();
 410
 411         msecure_init();
 412
 413         sdp2430_flash_init();
 414         usb_musb_init();
 415
 416         spi_register_board_info(sdp2430_spi_board_info,
 417                                 ARRAY_SIZE(sdp2430_spi_board_info));
 418         ads7846_dev_init();
 419         twl4030_mmc_init(mmc);
 420
 421         /* turn off secondary LCD backlight */
 422         gpio_direction_output(SECONDARY_LCD_GPIO, 0);
 423 }
 424
 425 static void __init omap_2430sdp_map_io(void)
 426 {
 427         omap2_set_globals_243x();
 428         omap2_map_common_io();
 429 }
 430
 431 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 432         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 433         .phys_io        = 0x48000000,
 434         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 435         .boot_params    = 0x80000100,
 436         .map_io         = omap_2430sdp_map_io,
 437         .init_irq       = omap_2430sdp_init_irq,
 438         .init_machine   = omap_2430sdp_init,
 439         .timer          = &omap_timer,
 440 MACHINE_END