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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 static struct at24_platform_data da830_evm_i2c_eeprom_info = {
  40         .byte_len       = SZ_256K / 8,
  41         .page_size      = 64,
  42         .flags          = AT24_FLAG_ADDR16,
  43         .setup          = davinci_get_mac_addr,
  44         .context        = (void *)0x7f00,
  45 };
  46
  47 static int da830_evm_ui_expander_setup(struct i2c_client *client, int gpio,
  48                 unsigned ngpio, void *context)
  49 {
  50         gpio_request(gpio + 6, "MUX_MODE");
  51 #ifdef CONFIG_DA830_UI_LCD
  52         gpio_direction_output(gpio + 6, 0);
  53 #else /* Must be NAND or NOR */
  54         gpio_direction_output(gpio + 6, 1);
  55 #endif
  56         return 0;
  57 }
  58
  59 static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
  60                 unsigned ngpio, void *context)
  61 {
  62         gpio_free(gpio + 6);
  63         return 0;
  64 }
  65
  66 static struct pcf857x_platform_data da830_evm_ui_expander_info = {
  67         .gpio_base      = DAVINCI_N_GPIO,
  68         .setup          = da830_evm_ui_expander_setup,
  69         .teardown       = da830_evm_ui_expander_teardown,
  70 };
  71
  72 static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
  73         {
  74                 I2C_BOARD_INFO("24c256", 0x50),
  75                 .platform_data  = &da830_evm_i2c_eeprom_info,
  76         },
  77         {
  78                 I2C_BOARD_INFO("tlv320aic3x", 0x18),
  79         },
  80         {
  81                 I2C_BOARD_INFO("pcf8574", 0x3f),
  82                 .platform_data  = &da830_evm_ui_expander_info,
  83         },
  84 };
  85
  86 static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
  87         .bus_freq       = 100,  /* kHz */
  88         .bus_delay      = 0,    /* usec */
  89 };
  90
  91 /*
  92  * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
  93  */
  94 #define ON_BD_USB_DRV   GPIO_TO_PIN(1, 15)
  95 #define ON_BD_USB_OVC   GPIO_TO_PIN(2, 4)
  96
  97 static const short da830_evm_usb11_pins[] = {
  98         DA830_GPIO1_15, DA830_GPIO2_4,
  99         -1
 100 };
 101
 102 static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
 103
 104 static int da830_evm_usb_set_power(unsigned port, int on)
 105 {
 106         gpio_set_value(ON_BD_USB_DRV, on);
 107         return 0;
 108 }
 109
 110 static int da830_evm_usb_get_power(unsigned port)
 111 {
 112         return gpio_get_value(ON_BD_USB_DRV);
 113 }
 114
 115 static int da830_evm_usb_get_oci(unsigned port)
 116 {
 117         return !gpio_get_value(ON_BD_USB_OVC);
 118 }
 119
 120 static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
 121
 122 static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
 123 {
 124         int irq         = gpio_to_irq(ON_BD_USB_OVC);
 125         int error       = 0;
 126
 127         if (handler != NULL) {
 128                 da830_evm_usb_ocic_handler = handler;
 129
 130                 error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
 131                                     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 132                                     "OHCI over-current indicator", NULL);
 133                 if (error)
 134                         printk(KERN_ERR "%s: could not request IRQ to watch "
 135                                "over-current indicator changes\n", __func__);
 136         } else
 137                 free_irq(irq, NULL);
 138
 139         return error;
 140 }
 141
 142 static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
 143         .set_power      = da830_evm_usb_set_power,
 144         .get_power      = da830_evm_usb_get_power,
 145         .get_oci        = da830_evm_usb_get_oci,
 146         .ocic_notify    = da830_evm_usb_ocic_notify,
 147
 148         /* TPS2065 switch @ 5V */
 149         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
 150 };
 151
 152 static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
 153 {
 154         da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
 155         return IRQ_HANDLED;
 156 }
 157
 158 static __init void da830_evm_usb_init(void)
 159 {
 160         u32 cfgchip2;
 161         int ret;
 162
 163         /*
 164          * Set up USB clock/mode in the CFGCHIP2 register.
 165          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
 166          */
 167         cfgchip2 = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 168
 169         /* USB2.0 PHY reference clock is 24 MHz */
 170         cfgchip2 &= ~CFGCHIP2_REFFREQ;
 171         cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
 172
 173         /*
 174          * Select internal reference clock for USB 2.0 PHY
 175          * and use it as a clock source for USB 1.1 PHY
 176          * (this is the default setting anyway).
 177          */
 178         cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
 179         cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
 180
 181         /*
 182          * We have to override VBUS/ID signals when MUSB is configured into the
 183          * host-only mode -- ID pin will float if no cable is connected, so the
 184          * controller won't be able to drive VBUS thinking that it's a B-device.
 185          * Otherwise, we want to use the OTG mode and enable VBUS comparators.
 186          */
 187         cfgchip2 &= ~CFGCHIP2_OTGMODE;
 188 #ifdef  CONFIG_USB_MUSB_HOST
 189         cfgchip2 |=  CFGCHIP2_FORCE_HOST;
 190 #else
 191         cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
 192 #endif
 193
 194         __raw_writel(cfgchip2, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 195
 196         /* USB_REFCLKIN is not used. */
 197         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
 198         if (ret)
 199                 pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
 200                            __func__, ret);
 201         else {
 202                 /*
 203                  * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
 204                  * with the power on to power good time of 3 ms.
 205                  */
 206                 ret = da8xx_register_usb20(1000, 3);
 207                 if (ret)
 208                         pr_warning("%s: USB 2.0 registration failed: %d\n",
 209                                    __func__, ret);
 210         }
 211
 212         ret = da8xx_pinmux_setup(da830_evm_usb11_pins);
 213         if (ret) {
 214                 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
 215                            __func__, ret);
 216                 return;
 217         }
 218
 219         ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
 220         if (ret) {
 221                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 222                        "power control: %d\n", __func__, ret);
 223                 return;
 224         }
 225         gpio_direction_output(ON_BD_USB_DRV, 0);
 226
 227         ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
 228         if (ret) {
 229                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 230                        "over-current indicator: %d\n", __func__, ret);
 231                 return;
 232         }
 233         gpio_direction_input(ON_BD_USB_OVC);
 234
 235         ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
 236         if (ret)
 237                 pr_warning("%s: USB 1.1 registration failed: %d\n",
 238                            __func__, ret);
 239 }
 240
 241 static struct davinci_uart_config da830_evm_uart_config __initdata = {
 242         .enabled_uarts = 0x7,
 243 };
 244
 245 static const short da830_evm_mcasp1_pins[] = {
 246         DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
 247         DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
 248         DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
 249         DA830_AXR1_11,
 250         -1
 251 };
 252
 253 static u8 da830_iis_serializer_direction[] = {
 254         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 255         INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
 256         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 257 };
 258
 259 static struct snd_platform_data da830_evm_snd_data = {
 260         .tx_dma_offset  = 0x2000,
 261         .rx_dma_offset  = 0x2000,
 262         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 263         .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
 264         .tdm_slots      = 2,
 265         .serial_dir     = da830_iis_serializer_direction,
 266         .eventq_no      = EVENTQ_0,
 267         .version        = MCASP_VERSION_2,
 268         .txnumevt       = 1,
 269         .rxnumevt       = 1,
 270 };
 271
 272 /*
 273  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
 274  */
 275 static const short da830_evm_mmc_sd_pins[] = {
 276         DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
 277         DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
 278         DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
 279         DA830_MMCSD_CMD,   DA830_GPIO2_1,     DA830_GPIO2_2,
 280         -1
 281 };
 282
 283 #define DA830_MMCSD_WP_PIN              GPIO_TO_PIN(2, 1)
 284
 285 static int da830_evm_mmc_get_ro(int index)
 286 {
 287         return gpio_get_value(DA830_MMCSD_WP_PIN);
 288 }
 289
 290 static struct davinci_mmc_config da830_evm_mmc_config = {
 291         .get_ro                 = da830_evm_mmc_get_ro,
 292         .wires                  = 4,
 293         .version                = MMC_CTLR_VERSION_2,
 294 };
 295
 296 static inline void da830_evm_init_mmc(void)
 297 {
 298         int ret;
 299
 300         ret = da8xx_pinmux_setup(da830_evm_mmc_sd_pins);
 301         if (ret) {
 302                 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
 303                                 ret);
 304                 return;
 305         }
 306
 307         ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
 308         if (ret) {
 309                 pr_warning("da830_evm_init: can not open GPIO %d\n",
 310                            DA830_MMCSD_WP_PIN);
 311                 return;
 312         }
 313         gpio_direction_input(DA830_MMCSD_WP_PIN);
 314
 315         ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
 316         if (ret) {
 317                 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
 318                                 ret);
 319                 gpio_free(DA830_MMCSD_WP_PIN);
 320         }
 321 }
 322
 323 #ifdef CONFIG_DA830_UI_NAND
 324 static struct mtd_partition da830_evm_nand_partitions[] = {
 325         /* bootloader (U-Boot, etc) in first sector */
 326         [0] = {
 327                 .name           = "bootloader",
 328                 .offset         = 0,
 329                 .size           = SZ_128K,
 330                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 331         },
 332         /* bootloader params in the next sector */
 333         [1] = {
 334                 .name           = "params",
 335                 .offset         = MTDPART_OFS_APPEND,
 336                 .size           = SZ_128K,
 337                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 338         },
 339         /* kernel */
 340         [2] = {
 341                 .name           = "kernel",
 342                 .offset         = MTDPART_OFS_APPEND,
 343                 .size           = SZ_2M,
 344                 .mask_flags     = 0,
 345         },
 346         /* file system */
 347         [3] = {
 348                 .name           = "filesystem",
 349                 .offset         = MTDPART_OFS_APPEND,
 350                 .size           = MTDPART_SIZ_FULL,
 351                 .mask_flags     = 0,
 352         }
 353 };
 354
 355 /* flash bbt decriptors */
 356 static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
 357 static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
 358
 359 static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
 360         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
 361                           NAND_BBT_WRITE | NAND_BBT_2BIT |
 362                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
 363         .offs           = 2,
 364         .len            = 4,
 365         .veroffs        = 16,
 366         .maxblocks      = 4,
 367         .pattern        = da830_evm_nand_bbt_pattern
 368 };
 369
 370 static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
 371         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
 372                           NAND_BBT_WRITE | NAND_BBT_2BIT |
 373                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
 374         .offs           = 2,
 375         .len            = 4,
 376         .veroffs        = 16,
 377         .maxblocks      = 4,
 378         .pattern        = da830_evm_nand_mirror_pattern
 379 };
 380
 381 static struct davinci_nand_pdata da830_evm_nand_pdata = {
 382         .parts          = da830_evm_nand_partitions,
 383         .nr_parts       = ARRAY_SIZE(da830_evm_nand_partitions),
 384         .ecc_mode       = NAND_ECC_HW,
 385         .ecc_bits       = 4,
 386         .options        = NAND_USE_FLASH_BBT,
 387         .bbt_td         = &da830_evm_nand_bbt_main_descr,
 388         .bbt_md         = &da830_evm_nand_bbt_mirror_descr,
 389 };
 390
 391 static struct resource da830_evm_nand_resources[] = {
 392         [0] = {         /* First memory resource is NAND I/O window */
 393                 .start  = DA830_EMIF25_ASYNC_DATA_CE3_BASE,
 394                 .end    = DA830_EMIF25_ASYNC_DATA_CE3_BASE + PAGE_SIZE - 1,
 395                 .flags  = IORESOURCE_MEM,
 396         },
 397         [1] = {         /* Second memory resource is AEMIF control registers */
 398                 .start  = DA830_EMIF25_CONTROL_BASE,
 399                 .end    = DA830_EMIF25_CONTROL_BASE + SZ_32K - 1,
 400                 .flags  = IORESOURCE_MEM,
 401         },
 402 };
 403
 404 static struct platform_device da830_evm_nand_device = {
 405         .name           = "davinci_nand",
 406         .id             = 1,
 407         .dev            = {
 408                 .platform_data  = &da830_evm_nand_pdata,
 409         },
 410         .num_resources  = ARRAY_SIZE(da830_evm_nand_resources),
 411         .resource       = da830_evm_nand_resources,
 412 };
 413 #endif
 414
 415 static struct platform_device *da830_evm_devices[] __initdata = {
 416 #ifdef CONFIG_DA830_UI_NAND
 417         &da830_evm_nand_device,
 418 #endif
 419 };
 420
 421 /*
 422  * UI board NAND/NOR flashes only use 8-bit data bus.
 423  */
 424 static const short da830_evm_emif25_pins[] = {
 425         DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
 426         DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
 427         DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
 428         DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
 429         DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
 430         DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
 431         DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
 432         -1
 433 };
 434
 435 static __init void da830_evm_init(void)
 436 {
 437         struct davinci_soc_info *soc_info = &davinci_soc_info;
 438         int ret;
 439
 440         ret = da8xx_register_edma();
 441         if (ret)
 442                 pr_warning("da830_evm_init: edma registration failed: %d\n",
 443                                 ret);
 444
 445         ret = da8xx_pinmux_setup(da830_i2c0_pins);
 446         if (ret)
 447                 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
 448                                 ret);
 449
 450         ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
 451         if (ret)
 452                 pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
 453                                 ret);
 454
 455         da830_evm_usb_init();
 456
 457         soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
 458         soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
 459         soc_info->emac_pdata->rmii_en = 1;
 460
 461         ret = da8xx_pinmux_setup(da830_cpgmac_pins);
 462         if (ret)
 463                 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
 464                                 ret);
 465
 466         ret = da8xx_register_emac();
 467         if (ret)
 468                 pr_warning("da830_evm_init: emac registration failed: %d\n",
 469                                 ret);
 470
 471         ret = da8xx_register_watchdog();
 472         if (ret)
 473                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 474                                 ret);
 475
 476         davinci_serial_init(&da830_evm_uart_config);
 477         i2c_register_board_info(1, da830_evm_i2c_devices,
 478                         ARRAY_SIZE(da830_evm_i2c_devices));
 479
 480         ret = da8xx_pinmux_setup(da830_evm_mcasp1_pins);
 481         if (ret)
 482                 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
 483                                 ret);
 484
 485         da8xx_register_mcasp(1, &da830_evm_snd_data);
 486
 487         da830_evm_init_mmc();
 488
 489 #ifdef CONFIG_DA830_UI
 490 #ifdef CONFIG_DA830_UI_LCD
 491         ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
 492         if (ret)
 493                 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
 494                                 ret);
 495
 496         ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
 497         if (ret)
 498                 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
 499 #else /* Must be NAND or NOR */
 500         ret = da8xx_pinmux_setup(da830_evm_emif25_pins);
 501         if (ret)
 502                 pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
 503                                 ret);
 504
 505         ret = platform_add_devices(da830_evm_devices,
 506                         ARRAY_SIZE(da830_evm_devices));
 507         if (ret)
 508                 pr_warning("da830_evm_init: EVM devices not added\n");
 509 #endif
 510 #endif
 511
 512         ret = da8xx_register_rtc();
 513         if (ret)
 514                 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
 515 }
 516
 517 #ifdef CONFIG_SERIAL_8250_CONSOLE
 518 static int __init da830_evm_console_init(void)
 519 {
 520         return add_preferred_console("ttyS", 2, "115200");
 521 }
 522 console_initcall(da830_evm_console_init);
 523 #endif
 524
 525 static __init void da830_evm_irq_init(void)
 526 {
 527         struct davinci_soc_info *soc_info = &davinci_soc_info;
 528
 529         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA830_N_CP_INTC_IRQ,
 530                         soc_info->intc_irq_prios);
 531 }
 532
 533 static void __init da830_evm_map_io(void)
 534 {
 535         da830_init();
 536 }
 537
 538 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM")
 539         .phys_io        = IO_PHYS,
 540         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 541         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 542         .map_io         = da830_evm_map_io,
 543         .init_irq       = da830_evm_irq_init,
 544         .timer          = &davinci_timer,
 545         .init_machine   = da830_evm_init,
 546 MACHINE_END