arch/arm/mach-davinci/board-da830-evm.c

   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/i2c.h>
  18 #include <linux/i2c/pcf857x.h>
  19 #include <linux/i2c/at24.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23
  24 #include <mach/cp_intc.h>
  25 #include <mach/mux.h>
  26 #include <mach/da8xx.h>
  27 #include <mach/usb.h>
  28
  29 #define DA830_EVM_PHY_MASK              0x0
  30 #define DA830_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
  31
  32 static struct at24_platform_data da830_evm_i2c_eeprom_info = {
  33         .byte_len       = SZ_256K / 8,
  34         .page_size      = 64,
  35         .flags          = AT24_FLAG_ADDR16,
  36         .setup          = davinci_get_mac_addr,
  37         .context        = (void *)0x7f00,
  38 };
  39
  40 static int da830_evm_ui_expander_setup(struct i2c_client *client, int gpio,
  41                 unsigned ngpio, void *context)
  42 {
  43         gpio_request(gpio + 6, "MUX_MODE");
  44 #ifdef CONFIG_DA830_UI_LCD
  45         gpio_direction_output(gpio + 6, 0);
  46 #else /* Must be NAND or NOR */
  47         gpio_direction_output(gpio + 6, 1);
  48 #endif
  49         return 0;
  50 }
  51
  52 static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
  53                 unsigned ngpio, void *context)
  54 {
  55         gpio_free(gpio + 6);
  56         return 0;
  57 }
  58
  59 static struct pcf857x_platform_data da830_evm_ui_expander_info = {
  60         .gpio_base      = DAVINCI_N_GPIO,
  61         .setup          = da830_evm_ui_expander_setup,
  62         .teardown       = da830_evm_ui_expander_teardown,
  63 };
  64
  65 static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
  66         {
  67                 I2C_BOARD_INFO("24c256", 0x50),
  68                 .platform_data  = &da830_evm_i2c_eeprom_info,
  69         },
  70         {
  71                 I2C_BOARD_INFO("tlv320aic3x", 0x18),
  72         },
  73         {
  74                 I2C_BOARD_INFO("pcf8574", 0x3f),
  75                 .platform_data  = &da830_evm_ui_expander_info,
  76         },
  77 };
  78
  79 static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
  80         .bus_freq       = 100,  /* kHz */
  81         .bus_delay      = 0,    /* usec */
  82 };
  83
  84 /*
  85  * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
  86  */
  87 #define ON_BD_USB_DRV   GPIO_TO_PIN(1, 15)
  88 #define ON_BD_USB_OVC   GPIO_TO_PIN(2, 4)
  89
  90 static const short da830_evm_usb11_pins[] = {
  91         DA830_GPIO1_15, DA830_GPIO2_4,
  92         -1
  93 };
  94
  95 static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
  96
  97 static int da830_evm_usb_set_power(unsigned port, int on)
  98 {
  99         gpio_set_value(ON_BD_USB_DRV, on);
 100         return 0;
 101 }
 102
 103 static int da830_evm_usb_get_power(unsigned port)
 104 {
 105         return gpio_get_value(ON_BD_USB_DRV);
 106 }
 107
 108 static int da830_evm_usb_get_oci(unsigned port)
 109 {
 110         return !gpio_get_value(ON_BD_USB_OVC);
 111 }
 112
 113 static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
 114
 115 static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
 116 {
 117         int irq         = gpio_to_irq(ON_BD_USB_OVC);
 118         int error       = 0;
 119
 120         if (handler != NULL) {
 121                 da830_evm_usb_ocic_handler = handler;
 122
 123                 error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
 124                                     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 125                                     "OHCI over-current indicator", NULL);
 126                 if (error)
 127                         printk(KERN_ERR "%s: could not request IRQ to watch "
 128                                "over-current indicator changes\n", __func__);
 129         } else
 130                 free_irq(irq, NULL);
 131
 132         return error;
 133 }
 134
 135 static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
 136         .set_power      = da830_evm_usb_set_power,
 137         .get_power      = da830_evm_usb_get_power,
 138         .get_oci        = da830_evm_usb_get_oci,
 139         .ocic_notify    = da830_evm_usb_ocic_notify,
 140
 141         /* TPS2065 switch @ 5V */
 142         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
 143 };
 144
 145 static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
 146 {
 147         da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
 148         return IRQ_HANDLED;
 149 }
 150
 151 static __init void da830_evm_usb_init(void)
 152 {
 153         u32 cfgchip2;
 154         int ret;
 155
 156         /*
 157          * Set up USB clock/mode in the CFGCHIP2 register.
 158          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
 159          */
 160         cfgchip2 = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 161
 162         /* USB2.0 PHY reference clock is 24 MHz */
 163         cfgchip2 &= ~CFGCHIP2_REFFREQ;
 164         cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
 165
 166         /*
 167          * Select internal reference clock for USB 2.0 PHY
 168          * and use it as a clock source for USB 1.1 PHY
 169          * (this is the default setting anyway).
 170          */
 171         cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
 172         cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
 173
 174         /*
 175          * We have to override VBUS/ID signals when MUSB is configured into the
 176          * host-only mode -- ID pin will float if no cable is connected, so the
 177          * controller won't be able to drive VBUS thinking that it's a B-device.
 178          * Otherwise, we want to use the OTG mode and enable VBUS comparators.
 179          */
 180         cfgchip2 &= ~CFGCHIP2_OTGMODE;
 181 #ifdef  CONFIG_USB_MUSB_HOST
 182         cfgchip2 |=  CFGCHIP2_FORCE_HOST;
 183 #else
 184         cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
 185 #endif
 186
 187         __raw_writel(cfgchip2, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 188
 189         /* USB_REFCLKIN is not used. */
 190         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
 191         if (ret)
 192                 pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
 193                            __func__, ret);
 194         else {
 195                 /*
 196                  * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
 197                  * with the power on to power good time of 3 ms.
 198                  */
 199                 ret = da8xx_register_usb20(1000, 3);
 200                 if (ret)
 201                         pr_warning("%s: USB 2.0 registration failed: %d\n",
 202                                    __func__, ret);
 203         }
 204
 205         ret = da8xx_pinmux_setup(da830_evm_usb11_pins);
 206         if (ret) {
 207                 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
 208                            __func__, ret);
 209                 return;
 210         }
 211
 212         ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
 213         if (ret) {
 214                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 215                        "power control: %d\n", __func__, ret);
 216                 return;
 217         }
 218         gpio_direction_output(ON_BD_USB_DRV, 0);
 219
 220         ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
 221         if (ret) {
 222                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 223                        "over-current indicator: %d\n", __func__, ret);
 224                 return;
 225         }
 226         gpio_direction_input(ON_BD_USB_OVC);
 227
 228         ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
 229         if (ret)
 230                 pr_warning("%s: USB 1.1 registration failed: %d\n",
 231                            __func__, ret);
 232 }
 233
 234 static struct davinci_uart_config da830_evm_uart_config __initdata = {
 235         .enabled_uarts = 0x7,
 236 };
 237
 238 static const short da830_evm_mcasp1_pins[] = {
 239         DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
 240         DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
 241         DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
 242         DA830_AXR1_11,
 243         -1
 244 };
 245
 246 static u8 da830_iis_serializer_direction[] = {
 247         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 248         INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
 249         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 250 };
 251
 252 static struct snd_platform_data da830_evm_snd_data = {
 253         .tx_dma_offset  = 0x2000,
 254         .rx_dma_offset  = 0x2000,
 255         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 256         .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
 257         .tdm_slots      = 2,
 258         .serial_dir     = da830_iis_serializer_direction,
 259         .eventq_no      = EVENTQ_0,
 260         .version        = MCASP_VERSION_2,
 261         .txnumevt       = 1,
 262         .rxnumevt       = 1,
 263 };
 264
 265 /*
 266  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
 267  */
 268 static const short da830_evm_mmc_sd_pins[] = {
 269         DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
 270         DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
 271         DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
 272         DA830_MMCSD_CMD,   DA830_GPIO2_1,     DA830_GPIO2_2,
 273         -1
 274 };
 275
 276 #define DA830_MMCSD_WP_PIN              GPIO_TO_PIN(2, 1)
 277
 278 static int da830_evm_mmc_get_ro(int index)
 279 {
 280         return gpio_get_value(DA830_MMCSD_WP_PIN);
 281 }
 282
 283 static struct davinci_mmc_config da830_evm_mmc_config = {
 284         .get_ro                 = da830_evm_mmc_get_ro,
 285         .wires                  = 4,
 286         .version                = MMC_CTLR_VERSION_2,
 287 };
 288
 289 static inline void da830_evm_init_mmc(void)
 290 {
 291         int ret;
 292
 293         ret = da8xx_pinmux_setup(da830_evm_mmc_sd_pins);
 294         if (ret) {
 295                 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
 296                                 ret);
 297                 return;
 298         }
 299
 300         ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
 301         if (ret) {
 302                 pr_warning("da830_evm_init: can not open GPIO %d\n",
 303                            DA830_MMCSD_WP_PIN);
 304                 return;
 305         }
 306         gpio_direction_input(DA830_MMCSD_WP_PIN);
 307
 308         ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
 309         if (ret) {
 310                 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
 311                                 ret);
 312                 gpio_free(DA830_MMCSD_WP_PIN);
 313         }
 314 }
 315
 316 static __init void da830_evm_init(void)
 317 {
 318         struct davinci_soc_info *soc_info = &davinci_soc_info;
 319         int ret;
 320
 321         ret = da8xx_register_edma();
 322         if (ret)
 323                 pr_warning("da830_evm_init: edma registration failed: %d\n",
 324                                 ret);
 325
 326         ret = da8xx_pinmux_setup(da830_i2c0_pins);
 327         if (ret)
 328                 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
 329                                 ret);
 330
 331         ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
 332         if (ret)
 333                 pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
 334                                 ret);
 335
 336         da830_evm_usb_init();
 337
 338         soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
 339         soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
 340         soc_info->emac_pdata->rmii_en = 1;
 341
 342         ret = da8xx_pinmux_setup(da830_cpgmac_pins);
 343         if (ret)
 344                 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
 345                                 ret);
 346
 347         ret = da8xx_register_emac();
 348         if (ret)
 349                 pr_warning("da830_evm_init: emac registration failed: %d\n",
 350                                 ret);
 351
 352         ret = da8xx_register_watchdog();
 353         if (ret)
 354                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 355                                 ret);
 356
 357         davinci_serial_init(&da830_evm_uart_config);
 358         i2c_register_board_info(1, da830_evm_i2c_devices,
 359                         ARRAY_SIZE(da830_evm_i2c_devices));
 360
 361         ret = da8xx_pinmux_setup(da830_evm_mcasp1_pins);
 362         if (ret)
 363                 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
 364                                 ret);
 365
 366         da8xx_register_mcasp(1, &da830_evm_snd_data);
 367
 368         da830_evm_init_mmc();
 369
 370 #ifdef CONFIG_DA830_UI_LCD
 371         ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
 372         if (ret)
 373                 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
 374                                 ret);
 375
 376         ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
 377         if (ret)
 378                 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
 379 #endif
 380
 381         ret = da8xx_register_rtc();
 382         if (ret)
 383                 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
 384 }
 385
 386 #ifdef CONFIG_SERIAL_8250_CONSOLE
 387 static int __init da830_evm_console_init(void)
 388 {
 389         return add_preferred_console("ttyS", 2, "115200");
 390 }
 391 console_initcall(da830_evm_console_init);
 392 #endif
 393
 394 static __init void da830_evm_irq_init(void)
 395 {
 396         struct davinci_soc_info *soc_info = &davinci_soc_info;
 397
 398         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA830_N_CP_INTC_IRQ,
 399                         soc_info->intc_irq_prios);
 400 }
 401
 402 static void __init da830_evm_map_io(void)
 403 {
 404         da830_init();
 405 }
 406
 407 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM")
 408         .phys_io        = IO_PHYS,
 409         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 410         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 411         .map_io         = da830_evm_map_io,
 412         .init_irq       = da830_evm_irq_init,
 413         .timer          = &davinci_timer,
 414         .init_machine   = da830_evm_init,
 415 MACHINE_END