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   1 /*
   2  * TI DA830/OMAP L137 EVM board
   3  *
   4  * Author: Mark A. Greer <mgreer@mvista.com>
   5  * Derived from: arch/arm/mach-davinci/board-dm644x-evm.c
   6  *
   7  * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
   8  * the terms of the GNU General Public License version 2. This program
   9  * is licensed "as is" without any warranty of any kind, whether express
  10  * or implied.
  11  */
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/console.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/gpio.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/i2c.h>
  19 #include <linux/i2c/pcf857x.h>
  20 #include <linux/i2c/at24.h>
  21 #include <linux/mtd/mtd.h>
  22 #include <linux/mtd/partitions.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26
  27 #include <mach/cp_intc.h>
  28 #include <mach/mux.h>
  29 #include <mach/nand.h>
  30 #include <mach/da8xx.h>
  31 #include <mach/usb.h>
  32
  33 #define DA830_EVM_PHY_MASK              0x0
  34 #define DA830_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
  35
  36 #define DA830_EMIF25_ASYNC_DATA_CE3_BASE        0x62000000
  37 #define DA830_EMIF25_CONTROL_BASE               0x68000000
  38
  39 /*
  40  * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
  41  */
  42 #define ON_BD_USB_DRV   GPIO_TO_PIN(1, 15)
  43 #define ON_BD_USB_OVC   GPIO_TO_PIN(2, 4)
  44
  45 static const short da830_evm_usb11_pins[] = {
  46         DA830_GPIO1_15, DA830_GPIO2_4,
  47         -1
  48 };
  49
  50 static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
  51
  52 static int da830_evm_usb_set_power(unsigned port, int on)
  53 {
  54         gpio_set_value(ON_BD_USB_DRV, on);
  55         return 0;
  56 }
  57
  58 static int da830_evm_usb_get_power(unsigned port)
  59 {
  60         return gpio_get_value(ON_BD_USB_DRV);
  61 }
  62
  63 static int da830_evm_usb_get_oci(unsigned port)
  64 {
  65         return !gpio_get_value(ON_BD_USB_OVC);
  66 }
  67
  68 static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
  69
  70 static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
  71 {
  72         int irq         = gpio_to_irq(ON_BD_USB_OVC);
  73         int error       = 0;
  74
  75         if (handler != NULL) {
  76                 da830_evm_usb_ocic_handler = handler;
  77
  78                 error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
  79                                     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  80                                     "OHCI over-current indicator", NULL);
  81                 if (error)
  82                         printk(KERN_ERR "%s: could not request IRQ to watch "
  83                                "over-current indicator changes\n", __func__);
  84         } else
  85                 free_irq(irq, NULL);
  86
  87         return error;
  88 }
  89
  90 static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
  91         .set_power      = da830_evm_usb_set_power,
  92         .get_power      = da830_evm_usb_get_power,
  93         .get_oci        = da830_evm_usb_get_oci,
  94         .ocic_notify    = da830_evm_usb_ocic_notify,
  95
  96         /* TPS2065 switch @ 5V */
  97         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
  98 };
  99
 100 static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
 101 {
 102         da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
 103         return IRQ_HANDLED;
 104 }
 105
 106 static __init void da830_evm_usb_init(void)
 107 {
 108         u32 cfgchip2;
 109         int ret;
 110
 111         /*
 112          * Set up USB clock/mode in the CFGCHIP2 register.
 113          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
 114          */
 115         cfgchip2 = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 116
 117         /* USB2.0 PHY reference clock is 24 MHz */
 118         cfgchip2 &= ~CFGCHIP2_REFFREQ;
 119         cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
 120
 121         /*
 122          * Select internal reference clock for USB 2.0 PHY
 123          * and use it as a clock source for USB 1.1 PHY
 124          * (this is the default setting anyway).
 125          */
 126         cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
 127         cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
 128
 129         /*
 130          * We have to override VBUS/ID signals when MUSB is configured into the
 131          * host-only mode -- ID pin will float if no cable is connected, so the
 132          * controller won't be able to drive VBUS thinking that it's a B-device.
 133          * Otherwise, we want to use the OTG mode and enable VBUS comparators.
 134          */
 135         cfgchip2 &= ~CFGCHIP2_OTGMODE;
 136 #ifdef  CONFIG_USB_MUSB_HOST
 137         cfgchip2 |=  CFGCHIP2_FORCE_HOST;
 138 #else
 139         cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
 140 #endif
 141
 142         __raw_writel(cfgchip2, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 143
 144         /* USB_REFCLKIN is not used. */
 145         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
 146         if (ret)
 147                 pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
 148                            __func__, ret);
 149         else {
 150                 /*
 151                  * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
 152                  * with the power on to power good time of 3 ms.
 153                  */
 154                 ret = da8xx_register_usb20(1000, 3);
 155                 if (ret)
 156                         pr_warning("%s: USB 2.0 registration failed: %d\n",
 157                                    __func__, ret);
 158         }
 159
 160         ret = da8xx_pinmux_setup(da830_evm_usb11_pins);
 161         if (ret) {
 162                 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
 163                            __func__, ret);
 164                 return;
 165         }
 166
 167         ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
 168         if (ret) {
 169                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 170                        "power control: %d\n", __func__, ret);
 171                 return;
 172         }
 173         gpio_direction_output(ON_BD_USB_DRV, 0);
 174
 175         ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
 176         if (ret) {
 177                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 178                        "over-current indicator: %d\n", __func__, ret);
 179                 return;
 180         }
 181         gpio_direction_input(ON_BD_USB_OVC);
 182
 183         ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
 184         if (ret)
 185                 pr_warning("%s: USB 1.1 registration failed: %d\n",
 186                            __func__, ret);
 187 }
 188
 189 static struct davinci_uart_config da830_evm_uart_config __initdata = {
 190         .enabled_uarts = 0x7,
 191 };
 192
 193 static const short da830_evm_mcasp1_pins[] = {
 194         DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
 195         DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
 196         DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
 197         DA830_AXR1_11,
 198         -1
 199 };
 200
 201 static u8 da830_iis_serializer_direction[] = {
 202         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 203         INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
 204         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 205 };
 206
 207 static struct snd_platform_data da830_evm_snd_data = {
 208         .tx_dma_offset  = 0x2000,
 209         .rx_dma_offset  = 0x2000,
 210         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 211         .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
 212         .tdm_slots      = 2,
 213         .serial_dir     = da830_iis_serializer_direction,
 214         .eventq_no      = EVENTQ_0,
 215         .version        = MCASP_VERSION_2,
 216         .txnumevt       = 1,
 217         .rxnumevt       = 1,
 218 };
 219
 220 /*
 221  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
 222  */
 223 static const short da830_evm_mmc_sd_pins[] = {
 224         DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
 225         DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
 226         DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
 227         DA830_MMCSD_CMD,   DA830_GPIO2_1,     DA830_GPIO2_2,
 228         -1
 229 };
 230
 231 #define DA830_MMCSD_WP_PIN              GPIO_TO_PIN(2, 1)
 232
 233 static int da830_evm_mmc_get_ro(int index)
 234 {
 235         return gpio_get_value(DA830_MMCSD_WP_PIN);
 236 }
 237
 238 static struct davinci_mmc_config da830_evm_mmc_config = {
 239         .get_ro                 = da830_evm_mmc_get_ro,
 240         .wires                  = 4,
 241         .version                = MMC_CTLR_VERSION_2,
 242 };
 243
 244 static inline void da830_evm_init_mmc(void)
 245 {
 246         int ret;
 247
 248         ret = da8xx_pinmux_setup(da830_evm_mmc_sd_pins);
 249         if (ret) {
 250                 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
 251                                 ret);
 252                 return;
 253         }
 254
 255         ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
 256         if (ret) {
 257                 pr_warning("da830_evm_init: can not open GPIO %d\n",
 258                            DA830_MMCSD_WP_PIN);
 259                 return;
 260         }
 261         gpio_direction_input(DA830_MMCSD_WP_PIN);
 262
 263         ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
 264         if (ret) {
 265                 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
 266                                 ret);
 267                 gpio_free(DA830_MMCSD_WP_PIN);
 268         }
 269 }
 270
 271 /*
 272  * UI board NAND/NOR flashes only use 8-bit data bus.
 273  */
 274 static const short da830_evm_emif25_pins[] = {
 275         DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
 276         DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
 277         DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
 278         DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
 279         DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
 280         DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
 281         DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
 282         -1
 283 };
 284
 285 #ifdef CONFIG_DA830_UI_NAND
 286 static struct mtd_partition da830_evm_nand_partitions[] = {
 287         /* bootloader (U-Boot, etc) in first sector */
 288         [0] = {
 289                 .name           = "bootloader",
 290                 .offset         = 0,
 291                 .size           = SZ_128K,
 292                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 293         },
 294         /* bootloader params in the next sector */
 295         [1] = {
 296                 .name           = "params",
 297                 .offset         = MTDPART_OFS_APPEND,
 298                 .size           = SZ_128K,
 299                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 300         },
 301         /* kernel */
 302         [2] = {
 303                 .name           = "kernel",
 304                 .offset         = MTDPART_OFS_APPEND,
 305                 .size           = SZ_2M,
 306                 .mask_flags     = 0,
 307         },
 308         /* file system */
 309         [3] = {
 310                 .name           = "filesystem",
 311                 .offset         = MTDPART_OFS_APPEND,
 312                 .size           = MTDPART_SIZ_FULL,
 313                 .mask_flags     = 0,
 314         }
 315 };
 316
 317 /* flash bbt decriptors */
 318 static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
 319 static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
 320
 321 static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
 322         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
 323                           NAND_BBT_WRITE | NAND_BBT_2BIT |
 324                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
 325         .offs           = 2,
 326         .len            = 4,
 327         .veroffs        = 16,
 328         .maxblocks      = 4,
 329         .pattern        = da830_evm_nand_bbt_pattern
 330 };
 331
 332 static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
 333         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
 334                           NAND_BBT_WRITE | NAND_BBT_2BIT |
 335                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
 336         .offs           = 2,
 337         .len            = 4,
 338         .veroffs        = 16,
 339         .maxblocks      = 4,
 340         .pattern        = da830_evm_nand_mirror_pattern
 341 };
 342
 343 static struct davinci_nand_pdata da830_evm_nand_pdata = {
 344         .parts          = da830_evm_nand_partitions,
 345         .nr_parts       = ARRAY_SIZE(da830_evm_nand_partitions),
 346         .ecc_mode       = NAND_ECC_HW,
 347         .ecc_bits       = 4,
 348         .options        = NAND_USE_FLASH_BBT,
 349         .bbt_td         = &da830_evm_nand_bbt_main_descr,
 350         .bbt_md         = &da830_evm_nand_bbt_mirror_descr,
 351 };
 352
 353 static struct resource da830_evm_nand_resources[] = {
 354         [0] = {         /* First memory resource is NAND I/O window */
 355                 .start  = DA830_EMIF25_ASYNC_DATA_CE3_BASE,
 356                 .end    = DA830_EMIF25_ASYNC_DATA_CE3_BASE + PAGE_SIZE - 1,
 357                 .flags  = IORESOURCE_MEM,
 358         },
 359         [1] = {         /* Second memory resource is AEMIF control registers */
 360                 .start  = DA830_EMIF25_CONTROL_BASE,
 361                 .end    = DA830_EMIF25_CONTROL_BASE + SZ_32K - 1,
 362                 .flags  = IORESOURCE_MEM,
 363         },
 364 };
 365
 366 static struct platform_device da830_evm_nand_device = {
 367         .name           = "davinci_nand",
 368         .id             = 1,
 369         .dev            = {
 370                 .platform_data  = &da830_evm_nand_pdata,
 371         },
 372         .num_resources  = ARRAY_SIZE(da830_evm_nand_resources),
 373         .resource       = da830_evm_nand_resources,
 374 };
 375
 376 static inline void da830_evm_init_nand(int mux_mode)
 377 {
 378         int ret;
 379
 380         ret = da8xx_pinmux_setup(da830_evm_emif25_pins);
 381         if (ret)
 382                 pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
 383                                 ret);
 384
 385         ret = platform_device_register(&da830_evm_nand_device);
 386         if (ret)
 387                 pr_warning("da830_evm_init: NAND device not registered.\n");
 388
 389         gpio_direction_output(mux_mode, 1);
 390 }
 391 #else
 392 static inline void da830_evm_init_nand(int mux_mode) { }
 393 #endif
 394
 395 #ifdef CONFIG_DA830_UI_LCD
 396 static inline void da830_evm_init_lcdc(int mux_mode)
 397 {
 398         int ret;
 399
 400         ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
 401         if (ret)
 402                 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
 403                                 ret);
 404
 405         ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
 406         if (ret)
 407                 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
 408
 409         gpio_direction_output(mux_mode, 0);
 410 }
 411 #else
 412 static inline void da830_evm_init_lcdc(int mux_mode) { }
 413 #endif
 414
 415 static struct at24_platform_data da830_evm_i2c_eeprom_info = {
 416         .byte_len       = SZ_256K / 8,
 417         .page_size      = 64,
 418         .flags          = AT24_FLAG_ADDR16,
 419         .setup          = davinci_get_mac_addr,
 420         .context        = (void *)0x7f00,
 421 };
 422
 423 static int da830_evm_ui_expander_setup(struct i2c_client *client, int gpio,
 424                 unsigned ngpio, void *context)
 425 {
 426         gpio_request(gpio + 6, "UI MUX_MODE");
 427
 428         da830_evm_init_lcdc(gpio + 6);
 429
 430         da830_evm_init_nand(gpio + 6);
 431
 432         return 0;
 433 }
 434
 435 static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
 436                 unsigned ngpio, void *context)
 437 {
 438         gpio_free(gpio + 6);
 439         return 0;
 440 }
 441
 442 static struct pcf857x_platform_data da830_evm_ui_expander_info = {
 443         .gpio_base      = DAVINCI_N_GPIO,
 444         .setup          = da830_evm_ui_expander_setup,
 445         .teardown       = da830_evm_ui_expander_teardown,
 446 };
 447
 448 static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
 449         {
 450                 I2C_BOARD_INFO("24c256", 0x50),
 451                 .platform_data  = &da830_evm_i2c_eeprom_info,
 452         },
 453         {
 454                 I2C_BOARD_INFO("tlv320aic3x", 0x18),
 455         },
 456         {
 457                 I2C_BOARD_INFO("pcf8574", 0x3f),
 458                 .platform_data  = &da830_evm_ui_expander_info,
 459         },
 460 };
 461
 462 static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
 463         .bus_freq       = 100,  /* kHz */
 464         .bus_delay      = 0,    /* usec */
 465 };
 466
 467 static __init void da830_evm_init(void)
 468 {
 469         struct davinci_soc_info *soc_info = &davinci_soc_info;
 470         int ret;
 471
 472         ret = da8xx_register_edma();
 473         if (ret)
 474                 pr_warning("da830_evm_init: edma registration failed: %d\n",
 475                                 ret);
 476
 477         ret = da8xx_pinmux_setup(da830_i2c0_pins);
 478         if (ret)
 479                 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
 480                                 ret);
 481
 482         ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
 483         if (ret)
 484                 pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
 485                                 ret);
 486
 487         da830_evm_usb_init();
 488
 489         soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
 490         soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
 491         soc_info->emac_pdata->rmii_en = 1;
 492
 493         ret = da8xx_pinmux_setup(da830_cpgmac_pins);
 494         if (ret)
 495                 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
 496                                 ret);
 497
 498         ret = da8xx_register_emac();
 499         if (ret)
 500                 pr_warning("da830_evm_init: emac registration failed: %d\n",
 501                                 ret);
 502
 503         ret = da8xx_register_watchdog();
 504         if (ret)
 505                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 506                                 ret);
 507
 508         davinci_serial_init(&da830_evm_uart_config);
 509         i2c_register_board_info(1, da830_evm_i2c_devices,
 510                         ARRAY_SIZE(da830_evm_i2c_devices));
 511
 512         ret = da8xx_pinmux_setup(da830_evm_mcasp1_pins);
 513         if (ret)
 514                 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
 515                                 ret);
 516
 517         da8xx_register_mcasp(1, &da830_evm_snd_data);
 518
 519         da830_evm_init_mmc();
 520
 521         ret = da8xx_register_rtc();
 522         if (ret)
 523                 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
 524 }
 525
 526 #ifdef CONFIG_SERIAL_8250_CONSOLE
 527 static int __init da830_evm_console_init(void)
 528 {
 529         return add_preferred_console("ttyS", 2, "115200");
 530 }
 531 console_initcall(da830_evm_console_init);
 532 #endif
 533
 534 static __init void da830_evm_irq_init(void)
 535 {
 536         struct davinci_soc_info *soc_info = &davinci_soc_info;
 537
 538         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA830_N_CP_INTC_IRQ,
 539                         soc_info->intc_irq_prios);
 540 }
 541
 542 static void __init da830_evm_map_io(void)
 543 {
 544         da830_init();
 545 }
 546
 547 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM")
 548         .phys_io        = IO_PHYS,
 549         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 550         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 551         .map_io         = da830_evm_map_io,
 552         .init_irq       = da830_evm_irq_init,
 553         .timer          = &davinci_timer,
 554         .init_machine   = da830_evm_init,
 555 MACHINE_END