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/spi/spi.h>
  27 #include <linux/spi/ads7846.h>
  28 #include <linux/i2c/twl4030-rtc.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/hsmmc.h>
  41 #include <mach/common.h>
  42 #include <mach/keypad.h>
  43 #include <mach/gpmc.h>
  44 #include <mach/mcspi.h>
  45
  46 #include <asm/io.h>
  47
  48 #define SDP2430_FLASH_CS        0
  49 #define SDP2430_SMC91X_CS       5
  50
  51 /* GPIO used for TSC2046 (touchscreen)
  52  *
  53  * Also note that the tsc2046 is the same silicon as the ads7846, so
  54  * that driver is used for the touchscreen. */
  55 #define TS_GPIO                 24
  56
  57 #define TWL4030_MSECURE_GPIO    118
  58 #define SECONDARY_LCD_GPIO      147
  59
  60 static struct mtd_partition sdp2430_partitions[] = {
  61         /* bootloader (U-Boot, etc) in first sector */
  62         {
  63                 .name           = "bootloader",
  64                 .offset         = 0,
  65                 .size           = SZ_256K,
  66                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  67          },
  68         /* bootloader params in the next sector */
  69         {
  70                 .name           = "params",
  71                 .offset         = MTDPART_OFS_APPEND,
  72                 .size           = SZ_128K,
  73                 .mask_flags     = 0,
  74          },
  75         /* kernel */
  76         {
  77                 .name           = "kernel",
  78                 .offset         = MTDPART_OFS_APPEND,
  79                 .size           = SZ_2M,
  80                 .mask_flags     = 0
  81         },
  82         /* file system */
  83         {
  84                 .name           = "filesystem",
  85                 .offset         = MTDPART_OFS_APPEND,
  86                 .size           = MTDPART_SIZ_FULL,
  87                 .mask_flags     = 0
  88         }
  89 };
  90
  91 static struct flash_platform_data sdp2430_flash_data = {
  92         .map_name       = "cfi_probe",
  93         .width          = 2,
  94         .parts          = sdp2430_partitions,
  95         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  96 };
  97
  98 static struct resource sdp2430_flash_resource = {
  99         .start          = SDP2430_CS0_BASE,
 100         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
 101         .flags          = IORESOURCE_MEM,
 102 };
 103
 104 static struct platform_device sdp2430_flash_device = {
 105         .name           = "omapflash",
 106         .id             = 0,
 107         .dev = {
 108                 .platform_data  = &sdp2430_flash_data,
 109         },
 110         .num_resources  = 1,
 111         .resource       = &sdp2430_flash_resource,
 112 };
 113
 114 static struct resource sdp2430_smc91x_resources[] = {
 115         [0] = {
 116                 .start  = SDP2430_CS0_BASE,
 117                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 118                 .flags  = IORESOURCE_MEM,
 119         },
 120         [1] = {
 121                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 122                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 123                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 124         },
 125 };
 126
 127 static struct platform_device sdp2430_lcd_device = {
 128         .name           = "sdp2430_lcd",
 129         .id             = -1,
 130 };
 131
 132 static struct platform_device sdp2430_smc91x_device = {
 133         .name           = "smc91x",
 134         .id             = -1,
 135         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 136         .resource       = sdp2430_smc91x_resources,
 137 };
 138
 139 /*
 140  * Key mapping for 2430 SDP board
 141  */
 142
 143 static int sdp2430_keymap[] = {
 144         KEY(0, 0, KEY_LEFT),
 145         KEY(0, 1, KEY_RIGHT),
 146         KEY(0, 2, KEY_A),
 147         KEY(0, 3, KEY_B),
 148         KEY(0, 4, KEY_C),
 149         KEY(1, 0, KEY_DOWN),
 150         KEY(1, 1, KEY_UP),
 151         KEY(1, 2, KEY_E),
 152         KEY(1, 3, KEY_F),
 153         KEY(1, 4, KEY_G),
 154         KEY(2, 0, KEY_ENTER),
 155         KEY(2, 1, KEY_I),
 156         KEY(2, 2, KEY_J),
 157         KEY(2, 3, KEY_K),
 158         KEY(2, 4, KEY_3),
 159         KEY(3, 0, KEY_M),
 160         KEY(3, 1, KEY_N),
 161         KEY(3, 2, KEY_O),
 162         KEY(3, 3, KEY_P),
 163         KEY(3, 4, KEY_Q),
 164         KEY(4, 0, KEY_R),
 165         KEY(4, 1, KEY_4),
 166         KEY(4, 2, KEY_T),
 167         KEY(4, 3, KEY_U),
 168         KEY(4, 4, KEY_D),
 169         KEY(5, 0, KEY_V),
 170         KEY(5, 1, KEY_W),
 171         KEY(5, 2, KEY_L),
 172         KEY(5, 3, KEY_S),
 173         KEY(5, 4, KEY_H),
 174         0
 175 };
 176
 177 static struct omap_kp_platform_data sdp2430_kp_data = {
 178         .rows           = 5,
 179         .cols           = 6,
 180         .keymap         = sdp2430_keymap,
 181         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 182         .rep            = 1,
 183         .irq            = TWL4030_MODIRQ_KEYPAD,
 184 };
 185
 186 static struct platform_device sdp2430_kp_device = {
 187         .name           = "omap_twl4030keypad",
 188         .id             = -1,
 189         .dev            = {
 190                 .platform_data  = &sdp2430_kp_data,
 191         },
 192 };
 193
 194 static int twl4030_rtc_init(void)
 195 {
 196         int ret = 0;
 197
 198         ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
 199         if (ret < 0) {
 200                 printk(KERN_ERR "twl4030_rtc_init: can't reserve GPIO:%d !\n",
 201                         TWL4030_MSECURE_GPIO);
 202                 goto out;
 203         }
 204         /*
 205          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 206          * Make msecure line high in order to change the TWL4030 RTC time
 207          * and calender registers.
 208          */
 209         omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);       /*dir out */
 210         omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
 211 out:
 212         return ret;
 213 }
 214
 215 static void twl4030_rtc_exit(void)
 216 {
 217         omap_free_gpio(TWL4030_MSECURE_GPIO);
 218 }
 219
 220 static struct twl4030rtc_platform_data sdp2430_twl4030rtc_data = {
 221         .init = &twl4030_rtc_init,
 222         .exit = &twl4030_rtc_exit,
 223 };
 224
 225 static struct platform_device sdp2430_twl4030rtc_device = {
 226         .name           = "twl4030_rtc",
 227         .id             = -1,
 228         .dev            = {
 229                 .platform_data  = &sdp2430_twl4030rtc_data,
 230         },
 231 };
 232
 233 static struct platform_device *sdp2430_devices[] __initdata = {
 234         &sdp2430_smc91x_device,
 235         &sdp2430_flash_device,
 236         &sdp2430_kp_device,
 237         &sdp2430_lcd_device,
 238         &sdp2430_twl4030rtc_device,
 239 };
 240
 241 static void ads7846_dev_init(void)
 242 {
 243         if (omap_request_gpio(TS_GPIO) < 0)
 244                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 245
 246         omap_set_gpio_direction(TS_GPIO, 1);
 247
 248         omap_set_gpio_debounce(TS_GPIO, 1);
 249         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 250 }
 251
 252 static int ads7846_get_pendown_state(void)
 253 {
 254         return !omap_get_gpio_datain(TS_GPIO);
 255 }
 256
 257 static struct ads7846_platform_data tsc2046_config __initdata = {
 258         .get_pendown_state = ads7846_get_pendown_state,
 259         .keep_vref_on      = 1,
 260 };
 261
 262 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 263         .turbo_mode     = 0,
 264         .single_channel = 0,  /* 0: slave, 1: master */
 265 };
 266
 267 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 268         .ctrl_name      = "internal",
 269 };
 270
 271 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 272         [0] = {
 273                 /*
 274                  * TSC2046 operates at a max freqency of 2MHz, so
 275                  * operate slightly below at 1.5MHz
 276                  */
 277                 .modalias        = "ads7846",
 278                 .bus_num         = 1,
 279                 .chip_select     = 0,
 280                 .max_speed_hz    = 1500000,
 281                 .controller_data = &tsc2046_mcspi_config,
 282                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 283                 .platform_data   = &tsc2046_config,
 284         },
 285 };
 286
 287 static inline void __init sdp2430_init_smc91x(void)
 288 {
 289         int eth_cs;
 290         unsigned long cs_mem_base;
 291         unsigned int rate;
 292         struct clk *gpmc_fck;
 293
 294         eth_cs = SDP2430_SMC91X_CS;
 295
 296         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 297         if (IS_ERR(gpmc_fck)) {
 298                 WARN_ON(1);
 299                 return;
 300         }
 301
 302         clk_enable(gpmc_fck);
 303         rate = clk_get_rate(gpmc_fck);
 304
 305         /* Make sure CS1 timings are correct, for 2430 always muxed */
 306         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 307
 308         if (rate >= 160000000) {
 309                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 310                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 311                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 312                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 313                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 314         } else if (rate >= 130000000) {
 315                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 316                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 318                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 320         } else { /* rate = 100000000 */
 321                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 322                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 324                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 325                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 326         }
 327
 328         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 329                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 330                 goto out;
 331         }
 332
 333         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 334         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 335         udelay(100);
 336
 337         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 338                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 339                         OMAP24XX_ETHR_GPIO_IRQ);
 340                 gpmc_cs_free(eth_cs);
 341                 goto out;
 342         }
 343         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 344
 345 out:
 346         clk_disable(gpmc_fck);
 347         clk_put(gpmc_fck);
 348 }
 349
 350 static void __init omap_2430sdp_init_irq(void)
 351 {
 352         omap2_init_common_hw(NULL);
 353         omap_init_irq();
 354         omap_gpio_init();
 355         sdp2430_init_smc91x();
 356 }
 357
 358 static struct omap_uart_config sdp2430_uart_config __initdata = {
 359         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 360 };
 361
 362 static
 363 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 364         .console_uart = 1,
 365         .console_speed = 115200,
 366 };
 367
 368 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 369         {OMAP_TAG_UART, &sdp2430_uart_config},
 370         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 371         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 372 };
 373
 374 static int __init omap2430_i2c_init(void)
 375 {
 376         /*
 377          * Registering bus 2 first to avoid twl4030 misbehaving as 2430SDP
 378          * has twl4030 on bus 2
 379          */
 380         omap_register_i2c_bus(2, 2600, NULL, 0);
 381         omap_register_i2c_bus(1, 400, NULL, 0);
 382         return 0;
 383 }
 384
 385 static void __init omap_2430sdp_init(void)
 386 {
 387         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 388         omap_board_config = sdp2430_config;
 389         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 390         omap_serial_init();
 391
 392         sdp2430_flash_init();
 393         usb_musb_init();
 394
 395         spi_register_board_info(sdp2430_spi_board_info,
 396                                 ARRAY_SIZE(sdp2430_spi_board_info));
 397         ads7846_dev_init();
 398         hsmmc_init();
 399
 400         /* turn off secondary LCD backlight */
 401         omap_set_gpio_direction(SECONDARY_LCD_GPIO, 0);
 402         omap_set_gpio_dataout(SECONDARY_LCD_GPIO, 0);
 403 }
 404
 405 static void __init omap_2430sdp_map_io(void)
 406 {
 407         omap2_set_globals_243x();
 408         omap2_map_common_io();
 409 }
 410
 411 arch_initcall(omap2430_i2c_init);
 412
 413 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 414         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 415         .phys_io        = 0x48000000,
 416         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 417         .boot_params    = 0x80000100,
 418         .map_io         = omap_2430sdp_map_io,
 419         .init_irq       = omap_2430sdp_init_irq,
 420         .init_machine   = omap_2430sdp_init,
 421         .timer          = &omap_timer,
 422 MACHINE_END