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
  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 twl4030_keypad_data sdp2430_kp_data = {
 177         .rows           = 5,
 178         .cols           = 6,
 179         .keymap         = sdp2430_keymap,
 180         .keymapsize     = ARRAY_SIZE(sdp2430_keymap),
 181         .rep            = 1,
 182         .irq            = TWL4030_MODIRQ_KEYPAD,
 183 };
 184
 185 static int __init msecure_init(void)
 186 {
 187         int ret = 0;
 188
 189 #ifdef CONFIG_RTC_DRV_TWL4030
 190         ret = gpio_request(TWL4030_MSECURE_GPIO, "msecure");
 191         if (ret < 0) {
 192                 printk(KERN_ERR "msecure_init: can't reserve GPIO:%d !\n",
 193                         TWL4030_MSECURE_GPIO);
 194                 goto out;
 195         }
 196         /*
 197          * TWL4030 will be in secure mode if msecure line from OMAP is low.
 198          * Make msecure line high in order to change the TWL4030 RTC time
 199          * and calender registers.
 200          */
 201         gpio_direction_output(TWL4030_MSECURE_GPIO, 1);
 202 out:
 203 #endif
 204
 205         return ret;
 206 }
 207
 208 static struct platform_device *sdp2430_devices[] __initdata = {
 209         &sdp2430_smc91x_device,
 210         &sdp2430_flash_device,
 211         &sdp2430_lcd_device,
 212 };
 213
 214 static void ads7846_dev_init(void)
 215 {
 216         if (omap_request_gpio(TS_GPIO) < 0)
 217                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 218
 219         omap_set_gpio_direction(TS_GPIO, 1);
 220
 221         omap_set_gpio_debounce(TS_GPIO, 1);
 222         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 223 }
 224
 225 static int ads7846_get_pendown_state(void)
 226 {
 227         return !omap_get_gpio_datain(TS_GPIO);
 228 }
 229
 230 static struct ads7846_platform_data tsc2046_config __initdata = {
 231         .get_pendown_state = ads7846_get_pendown_state,
 232         .keep_vref_on      = 1,
 233 };
 234
 235 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 236         .turbo_mode     = 0,
 237         .single_channel = 0,  /* 0: slave, 1: master */
 238 };
 239
 240 static struct omap_lcd_config sdp2430_lcd_config __initdata = {
 241         .ctrl_name      = "internal",
 242 };
 243
 244 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 245         [0] = {
 246                 /*
 247                  * TSC2046 operates at a max freqency of 2MHz, so
 248                  * operate slightly below at 1.5MHz
 249                  */
 250                 .modalias        = "ads7846",
 251                 .bus_num         = 1,
 252                 .chip_select     = 0,
 253                 .max_speed_hz    = 1500000,
 254                 .controller_data = &tsc2046_mcspi_config,
 255                 .irq             = OMAP_GPIO_IRQ(TS_GPIO),
 256                 .platform_data   = &tsc2046_config,
 257         },
 258 };
 259
 260 static inline void __init sdp2430_init_smc91x(void)
 261 {
 262         int eth_cs;
 263         unsigned long cs_mem_base;
 264         unsigned int rate;
 265         struct clk *gpmc_fck;
 266
 267         eth_cs = SDP2430_SMC91X_CS;
 268
 269         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 270         if (IS_ERR(gpmc_fck)) {
 271                 WARN_ON(1);
 272                 return;
 273         }
 274
 275         clk_enable(gpmc_fck);
 276         rate = clk_get_rate(gpmc_fck);
 277
 278         /* Make sure CS1 timings are correct, for 2430 always muxed */
 279         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 280
 281         if (rate >= 160000000) {
 282                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 283                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 284                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 285                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 286                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 287         } else if (rate >= 130000000) {
 288                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 289                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 290                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 291                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 292                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 293         } else { /* rate = 100000000 */
 294                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 295                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 296                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 297                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 298                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 299         }
 300
 301         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 302                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 303                 goto out;
 304         }
 305
 306         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 307         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 308         udelay(100);
 309
 310         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 311                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 312                         OMAP24XX_ETHR_GPIO_IRQ);
 313                 gpmc_cs_free(eth_cs);
 314                 goto out;
 315         }
 316         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 317
 318 out:
 319         clk_disable(gpmc_fck);
 320         clk_put(gpmc_fck);
 321 }
 322
 323 static void __init omap_2430sdp_init_irq(void)
 324 {
 325         omap2_init_common_hw(NULL);
 326         omap_init_irq();
 327         omap_gpio_init();
 328         sdp2430_init_smc91x();
 329 }
 330
 331 static struct omap_uart_config sdp2430_uart_config __initdata = {
 332         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 333 };
 334
 335 static
 336 struct omap_serial_console_config sdp2430_serial_console_config __initdata = {
 337         .console_uart = 1,
 338         .console_speed = 115200,
 339 };
 340
 341 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
 342         {OMAP_TAG_UART, &sdp2430_uart_config},
 343         {OMAP_TAG_LCD, &sdp2430_lcd_config},
 344         {OMAP_TAG_SERIAL_CONSOLE, &sdp2430_serial_console_config},
 345 };
 346
 347 static struct twl4030_platform_data sdp2430_twldata = {
 348         .irq_base       = TWL4030_IRQ_BASE,
 349         .irq_end        = TWL4030_IRQ_END,
 350
 351         /* platform_data for children goes here */
 352         .keypad         = &sdp2430_kp_data,
 353 };
 354
 355 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
 356         {
 357                 I2C_BOARD_INFO("twl4030", 0x48),
 358                 .flags = I2C_CLIENT_WAKE,
 359                 .irq = INT_24XX_SYS_NIRQ,
 360                 .platform_data = &sdp2430_twldata,
 361         },
 362 };
 363
 364 static int __init omap2430_i2c_init(void)
 365 {
 366         omap_register_i2c_bus(1, 400, NULL, 0);
 367         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
 368                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
 369         return 0;
 370 }
 371
 372 static void __init omap_2430sdp_init(void)
 373 {
 374         omap2430_i2c_init();
 375
 376         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 377         omap_board_config = sdp2430_config;
 378         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 379         omap_serial_init();
 380
 381         msecure_init();
 382
 383         sdp2430_flash_init();
 384         usb_musb_init();
 385
 386         spi_register_board_info(sdp2430_spi_board_info,
 387                                 ARRAY_SIZE(sdp2430_spi_board_info));
 388         ads7846_dev_init();
 389         hsmmc_init();
 390
 391         /* turn off secondary LCD backlight */
 392         omap_set_gpio_direction(SECONDARY_LCD_GPIO, 0);
 393         omap_set_gpio_dataout(SECONDARY_LCD_GPIO, 0);
 394 }
 395
 396 static void __init omap_2430sdp_map_io(void)
 397 {
 398         omap2_set_globals_243x();
 399         omap2_map_common_io();
 400 }
 401
 402 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 403         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 404         .phys_io        = 0x48000000,
 405         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 406         .boot_params    = 0x80000100,
 407         .map_io         = omap_2430sdp_map_io,
 408         .init_irq       = omap_2430sdp_init_irq,
 409         .init_machine   = omap_2430sdp_init,
 410         .timer          = &omap_timer,
 411 MACHINE_END