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