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         __raw_writel(cfgchip2, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
 175
 176         ret = da8xx_pinmux_setup(da830_evm_usb11_pins);
 177         if (ret) {
 178                 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
 179                            __func__, ret);
 180                 return;
 181         }
 182
 183         ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
 184         if (ret) {
 185                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 186                        "power control: %d\n", __func__, ret);
 187                 return;
 188         }
 189         gpio_direction_output(ON_BD_USB_DRV, 0);
 190
 191         ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
 192         if (ret) {
 193                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
 194                        "over-current indicator: %d\n", __func__, ret);
 195                 return;
 196         }
 197         gpio_direction_input(ON_BD_USB_OVC);
 198
 199         ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
 200         if (ret)
 201                 pr_warning("%s: USB 1.1 registration failed: %d\n",
 202                            __func__, ret);
 203 }
 204
 205 static struct davinci_uart_config da830_evm_uart_config __initdata = {
 206         .enabled_uarts = 0x7,
 207 };
 208
 209 static const short da830_evm_mcasp1_pins[] = {
 210         DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
 211         DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
 212         DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
 213         DA830_AXR1_11,
 214         -1
 215 };
 216
 217 static u8 da830_iis_serializer_direction[] = {
 218         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 219         INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
 220         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 221 };
 222
 223 static struct snd_platform_data da830_evm_snd_data = {
 224         .tx_dma_offset  = 0x2000,
 225         .rx_dma_offset  = 0x2000,
 226         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 227         .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
 228         .tdm_slots      = 2,
 229         .serial_dir     = da830_iis_serializer_direction,
 230         .eventq_no      = EVENTQ_0,
 231         .version        = MCASP_VERSION_2,
 232         .txnumevt       = 1,
 233         .rxnumevt       = 1,
 234 };
 235
 236 /*
 237  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
 238  */
 239 static const short da830_evm_mmc_sd_pins[] = {
 240         DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
 241         DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
 242         DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
 243         DA830_MMCSD_CMD,   DA830_GPIO2_1,     DA830_GPIO2_2,
 244         -1
 245 };
 246
 247 #define DA830_MMCSD_WP_PIN              GPIO_TO_PIN(2, 1)
 248
 249 static int da830_evm_mmc_get_ro(int index)
 250 {
 251         return gpio_get_value(DA830_MMCSD_WP_PIN);
 252 }
 253
 254 static struct davinci_mmc_config da830_evm_mmc_config = {
 255         .get_ro                 = da830_evm_mmc_get_ro,
 256         .wires                  = 4,
 257         .version                = MMC_CTLR_VERSION_2,
 258 };
 259
 260 static inline void da830_evm_init_mmc(void)
 261 {
 262         int ret;
 263
 264         ret = da8xx_pinmux_setup(da830_evm_mmc_sd_pins);
 265         if (ret) {
 266                 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
 267                                 ret);
 268                 return;
 269         }
 270
 271         ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
 272         if (ret) {
 273                 pr_warning("da830_evm_init: can not open GPIO %d\n",
 274                            DA830_MMCSD_WP_PIN);
 275                 return;
 276         }
 277         gpio_direction_input(DA830_MMCSD_WP_PIN);
 278
 279         ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
 280         if (ret) {
 281                 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
 282                                 ret);
 283                 gpio_free(DA830_MMCSD_WP_PIN);
 284         }
 285 }
 286
 287 static __init void da830_evm_init(void)
 288 {
 289         struct davinci_soc_info *soc_info = &davinci_soc_info;
 290         int ret;
 291
 292         ret = da8xx_register_edma();
 293         if (ret)
 294                 pr_warning("da830_evm_init: edma registration failed: %d\n",
 295                                 ret);
 296
 297         ret = da8xx_pinmux_setup(da830_i2c0_pins);
 298         if (ret)
 299                 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
 300                                 ret);
 301
 302         ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
 303         if (ret)
 304                 pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
 305                                 ret);
 306
 307         da830_evm_usb_init();
 308
 309         soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
 310         soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
 311         soc_info->emac_pdata->rmii_en = 1;
 312
 313         ret = da8xx_pinmux_setup(da830_cpgmac_pins);
 314         if (ret)
 315                 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
 316                                 ret);
 317
 318         ret = da8xx_register_emac();
 319         if (ret)
 320                 pr_warning("da830_evm_init: emac registration failed: %d\n",
 321                                 ret);
 322
 323         ret = da8xx_register_watchdog();
 324         if (ret)
 325                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 326                                 ret);
 327
 328         davinci_serial_init(&da830_evm_uart_config);
 329         i2c_register_board_info(1, da830_evm_i2c_devices,
 330                         ARRAY_SIZE(da830_evm_i2c_devices));
 331
 332         ret = da8xx_pinmux_setup(da830_evm_mcasp1_pins);
 333         if (ret)
 334                 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
 335                                 ret);
 336
 337         da8xx_register_mcasp(1, &da830_evm_snd_data);
 338
 339         da830_evm_init_mmc();
 340
 341 #ifdef CONFIG_DA830_UI_LCD
 342         ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
 343         if (ret)
 344                 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
 345                                 ret);
 346
 347         ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
 348         if (ret)
 349                 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
 350 #endif
 351
 352         ret = da8xx_register_rtc();
 353         if (ret)
 354                 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
 355 }
 356
 357 #ifdef CONFIG_SERIAL_8250_CONSOLE
 358 static int __init da830_evm_console_init(void)
 359 {
 360         return add_preferred_console("ttyS", 2, "115200");
 361 }
 362 console_initcall(da830_evm_console_init);
 363 #endif
 364
 365 static __init void da830_evm_irq_init(void)
 366 {
 367         struct davinci_soc_info *soc_info = &davinci_soc_info;
 368
 369         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA830_N_CP_INTC_IRQ,
 370                         soc_info->intc_irq_prios);
 371 }
 372
 373 static void __init da830_evm_map_io(void)
 374 {
 375         da830_init();
 376 }
 377
 378 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM")
 379         .phys_io        = IO_PHYS,
 380         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 381         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 382         .map_io         = da830_evm_map_io,
 383         .init_irq       = da830_evm_irq_init,
 384         .timer          = &davinci_timer,
 385         .init_machine   = da830_evm_init,
 386 MACHINE_END