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board-omap3stalker.c

/*
 * linux/arch/arm/mach-omap2/board-omap3evm.c
 *
 * Copyright (C) 2008 Guangzhou EMA-Tech
 *
 * Modified from mach-omap2/board-omap3evm.c
 *
 * Initial code: Syed Mohammed Khasim
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
#include <linux/mmc/host.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <plat/board.h>
#include <plat/common.h>
#include <plat/gpmc.h>
#include <plat/nand.h>
#include <plat/usb.h>
#include <plat/display.h>
#include <plat/panel-generic-dpi.h>

#include <plat/mcspi.h>
#include <linux/input/matrix_keypad.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/interrupt.h>
#include <linux/smsc911x.h>
#include <linux/i2c/at24.h>

#include "sdram-micron-mt46h32m32lf-6.h"
#include "mux.h"
#include "hsmmc.h"
#include "timer-gp.h"

#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
#define OMAP3STALKER_ETHR_START     0x2c000000
#define OMAP3STALKER_ETHR_SIZE      1024
#define OMAP3STALKER_ETHR_GPIO_IRQ  19
#define OMAP3STALKER_SMC911X_CS     5

static struct resource omap3stalker_smsc911x_resources[] = {
      [0] = {
             .start     = OMAP3STALKER_ETHR_START,
             .end =
             (OMAP3STALKER_ETHR_START + OMAP3STALKER_ETHR_SIZE - 1),
             .flags     = IORESOURCE_MEM,
      },
      [1] = {
             .start     = OMAP_GPIO_IRQ(OMAP3STALKER_ETHR_GPIO_IRQ),
             .end = OMAP_GPIO_IRQ(OMAP3STALKER_ETHR_GPIO_IRQ),
             .flags     = (IORESOURCE_IRQ | IRQF_TRIGGER_LOW),
      },
};

static struct smsc911x_platform_config smsc911x_config = {
      .phy_interface    = PHY_INTERFACE_MODE_MII,
      .irq_polarity     = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
      .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
      .flags            = (SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS),
};

static struct platform_device omap3stalker_smsc911x_device = {
      .name       = "smsc911x",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(omap3stalker_smsc911x_resources),
      .resource   = &omap3stalker_smsc911x_resources[0],
      .dev        = {
            .platform_data    = &smsc911x_config,
      },
};

static inline void __init omap3stalker_init_eth(void)
{
      int eth_cs;
      struct clk *l3ck;
      unsigned int rate;

      eth_cs = OMAP3STALKER_SMC911X_CS;

      l3ck = clk_get(NULL, "l3_ck");
      if (IS_ERR(l3ck))
            rate = 100000000;
      else
            rate = clk_get_rate(l3ck);

      omap_mux_init_gpio(19, OMAP_PIN_INPUT_PULLUP);
      if (gpio_request(OMAP3STALKER_ETHR_GPIO_IRQ, "SMC911x irq") < 0) {
            printk(KERN_ERR
                   "Failed to request GPIO%d for smc911x IRQ\n",
                   OMAP3STALKER_ETHR_GPIO_IRQ);
            return;
      }

      gpio_direction_input(OMAP3STALKER_ETHR_GPIO_IRQ);

      platform_device_register(&omap3stalker_smsc911x_device);
}

#else
static inline void __init omap3stalker_init_eth(void)
{
      return;
}
#endif

/*
 * OMAP3 DSS control signals
 */

#define DSS_ENABLE_GPIO 199
#define LCD_PANEL_BKLIGHT_GPIO      210
#define ENABLE_VPLL2_DEV_GRP  0xE0

static int lcd_enabled;
static int dvi_enabled;

static void __init omap3_stalker_display_init(void)
{
      return;
}

static int omap3_stalker_enable_lcd(struct omap_dss_device *dssdev)
{
      if (dvi_enabled) {
            printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
            return -EINVAL;
      }
      gpio_set_value(DSS_ENABLE_GPIO, 1);
      gpio_set_value(LCD_PANEL_BKLIGHT_GPIO, 1);
      lcd_enabled = 1;
      return 0;
}

static void omap3_stalker_disable_lcd(struct omap_dss_device *dssdev)
{
      gpio_set_value(DSS_ENABLE_GPIO, 0);
      gpio_set_value(LCD_PANEL_BKLIGHT_GPIO, 0);
      lcd_enabled = 0;
}

static struct panel_generic_dpi_data lcd_panel = {
      .name             = "generic",
      .platform_enable  = omap3_stalker_enable_lcd,
      .platform_disable = omap3_stalker_disable_lcd,
};

static struct omap_dss_device omap3_stalker_lcd_device = {
      .name             = "lcd",
      .driver_name            = "generic_dpi_panel",
      .data             = &lcd_panel,
      .phy.dpi.data_lines     = 24,
      .type             = OMAP_DISPLAY_TYPE_DPI,
};

static int omap3_stalker_enable_tv(struct omap_dss_device *dssdev)
{
      return 0;
}

static void omap3_stalker_disable_tv(struct omap_dss_device *dssdev)
{
}

static struct omap_dss_device omap3_stalker_tv_device = {
      .name             = "tv",
      .driver_name            = "venc",
      .type             = OMAP_DISPLAY_TYPE_VENC,
#if defined(CONFIG_OMAP2_VENC_OUT_TYPE_SVIDEO)
      .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
#elif defined(CONFIG_OMAP2_VENC_OUT_TYPE_COMPOSITE)
      .u.venc.type            = OMAP_DSS_VENC_TYPE_COMPOSITE,
#endif
      .platform_enable  = omap3_stalker_enable_tv,
      .platform_disable = omap3_stalker_disable_tv,
};

static int omap3_stalker_enable_dvi(struct omap_dss_device *dssdev)
{
      if (lcd_enabled) {
            printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
            return -EINVAL;
      }
      gpio_set_value(DSS_ENABLE_GPIO, 1);
      dvi_enabled = 1;
      return 0;
}

static void omap3_stalker_disable_dvi(struct omap_dss_device *dssdev)
{
      gpio_set_value(DSS_ENABLE_GPIO, 0);
      dvi_enabled = 0;
}

static struct panel_generic_dpi_data dvi_panel = {
      .name             = "generic",
      .platform_enable  = omap3_stalker_enable_dvi,
      .platform_disable = omap3_stalker_disable_dvi,
};

static struct omap_dss_device omap3_stalker_dvi_device = {
      .name             = "dvi",
      .type             = OMAP_DISPLAY_TYPE_DPI,
      .driver_name            = "generic_dpi_panel",
      .data             = &dvi_panel,
      .phy.dpi.data_lines     = 24,
};

static struct omap_dss_device *omap3_stalker_dss_devices[] = {
      &omap3_stalker_lcd_device,
      &omap3_stalker_tv_device,
      &omap3_stalker_dvi_device,
};

static struct omap_dss_board_info omap3_stalker_dss_data = {
      .num_devices      = ARRAY_SIZE(omap3_stalker_dss_devices),
      .devices    = omap3_stalker_dss_devices,
      .default_device   = &omap3_stalker_dvi_device,
};

static struct platform_device omap3_stalker_dss_device = {
      .name = "omapdss",
      .id   = -1,
      .dev  = {
            .platform_data    = &omap3_stalker_dss_data,
      },
};

static struct regulator_consumer_supply omap3stalker_vmmc1_supply = {
      .supply           = "vmmc",
};

static struct regulator_consumer_supply omap3stalker_vsim_supply = {
      .supply           = "vmmc_aux",
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data omap3stalker_vmmc1 = {
      .constraints            = {
            .min_uV                 = 1850000,
            .max_uV                 = 3150000,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
            | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
            | REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &omap3stalker_vmmc1_supply,
};

/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data omap3stalker_vsim = {
      .constraints            = {
            .min_uV                 = 1800000,
            .max_uV                 = 3000000,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
            | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
            | REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &omap3stalker_vsim_supply,
};

static struct omap2_hsmmc_info mmc[] = {
      {
       .mmc       = 1,
       .caps            = MMC_CAP_4_BIT_DATA,
       .gpio_cd   = -EINVAL,
       .gpio_wp   = 23,
       },
      {}                /* Terminator */
};

static struct gpio_keys_button gpio_buttons[] = {
      {
       .code            = BTN_EXTRA,
       .gpio            = 18,
       .desc            = "user",
       .wakeup    = 1,
       },
};

static struct gpio_keys_platform_data gpio_key_info = {
      .buttons    = gpio_buttons,
      .nbuttons   = ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &gpio_key_info,
      },
};

static struct gpio_led gpio_leds[] = {
      {
       .name                  = "stalker:D8:usr0",
       .default_trigger = "default-on",
       .gpio                  = 126,
       },
      {
       .name                  = "stalker:D9:usr1",
       .default_trigger = "default-on",
       .gpio                  = 127,
       },
      {
       .name                  = "stalker:D3:mmc0",
       .gpio                  = -EINVAL,  /* gets replaced */
       .active_low            = true,
       .default_trigger = "mmc0",
       },
      {
       .name                  = "stalker:D4:heartbeat",
       .gpio                  = -EINVAL,  /* gets replaced */
       .active_low            = true,
       .default_trigger = "heartbeat",
       },
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds       = gpio_leds,
      .num_leds   = ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &gpio_led_info,
      },
};

static int
omap3stalker_twl_gpio_setup(struct device *dev,
                      unsigned gpio, unsigned ngpio)
{
      /* gpio + 0 is "mmc0_cd" (input/IRQ) */
      omap_mux_init_gpio(23, OMAP_PIN_INPUT);
      mmc[0].gpio_cd = gpio + 0;
      omap2_hsmmc_init(mmc);

      /* link regulators to MMC adapters */
      omap3stalker_vmmc1_supply.dev = mmc[0].dev;
      omap3stalker_vsim_supply.dev = mmc[0].dev;

      /*
       * Most GPIOs are for USB OTG.  Some are mostly sent to
       * the P2 connector; notably LEDA for the LCD backlight.
       */

      /* TWL4030_GPIO_MAX + 0 == ledA, LCD Backlight control */
      gpio_request(gpio + TWL4030_GPIO_MAX, "EN_LCD_BKL");
      gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);

      /* gpio + 7 == DVI Enable */
      gpio_request(gpio + 7, "EN_DVI");
      gpio_direction_output(gpio + 7, 0);

      /* TWL4030_GPIO_MAX + 1 == ledB (out, mmc0) */
      gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
      /* GPIO + 13 == ledsync (out, heartbeat) */
      gpio_leds[3].gpio = gpio + 13;

      platform_device_register(&leds_gpio);
      return 0;
}

static struct twl4030_gpio_platform_data omap3stalker_gpio_data = {
      .gpio_base  = OMAP_MAX_GPIO_LINES,
      .irq_base   = TWL4030_GPIO_IRQ_BASE,
      .irq_end    = TWL4030_GPIO_IRQ_END,
      .use_leds   = true,
      .setup            = omap3stalker_twl_gpio_setup,
};

static struct twl4030_usb_data omap3stalker_usb_data = {
      .usb_mode   = T2_USB_MODE_ULPI,
};

static uint32_t board_keymap[] = {
      KEY(0, 0, KEY_LEFT),
      KEY(0, 1, KEY_DOWN),
      KEY(0, 2, KEY_ENTER),
      KEY(0, 3, KEY_M),

      KEY(1, 0, KEY_RIGHT),
      KEY(1, 1, KEY_UP),
      KEY(1, 2, KEY_I),
      KEY(1, 3, KEY_N),

      KEY(2, 0, KEY_A),
      KEY(2, 1, KEY_E),
      KEY(2, 2, KEY_J),
      KEY(2, 3, KEY_O),

      KEY(3, 0, KEY_B),
      KEY(3, 1, KEY_F),
      KEY(3, 2, KEY_K),
      KEY(3, 3, KEY_P)
};

static struct matrix_keymap_data board_map_data = {
      .keymap           = board_keymap,
      .keymap_size      = ARRAY_SIZE(board_keymap),
};

static struct twl4030_keypad_data omap3stalker_kp_data = {
      .keymap_data      = &board_map_data,
      .rows       = 4,
      .cols       = 4,
      .rep        = 1,
};

static struct twl4030_madc_platform_data omap3stalker_madc_data = {
      .irq_line   = 1,
};

static struct twl4030_codec_audio_data omap3stalker_audio_data = {
      .audio_mclk = 26000000,
};

static struct twl4030_codec_data omap3stalker_codec_data = {
      .audio_mclk = 26000000,
      .audio            = &omap3stalker_audio_data,
};

static struct regulator_consumer_supply omap3_stalker_vdda_dac_supply = {
      .supply           = "vdda_dac",
      .dev        = &omap3_stalker_dss_device.dev,
};

/* VDAC for DSS driving S-Video */
static struct regulator_init_data omap3_stalker_vdac = {
      .constraints            = {
            .min_uV                 = 1800000,
            .max_uV                 = 1800000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
            | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_MODE
            | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &omap3_stalker_vdda_dac_supply,
};

/* VPLL2 for digital video outputs */
static struct regulator_consumer_supply omap3_stalker_vpll2_supply = {
      .supply           = "vdds_dsi",
      .dev        = &omap3_stalker_lcd_device.dev,
};

static struct regulator_init_data omap3_stalker_vpll2 = {
      .constraints            = {
            .name             = "VDVI",
            .min_uV                 = 1800000,
            .max_uV                 = 1800000,
            .apply_uV = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
            | REGULATOR_MODE_STANDBY,
            .valid_ops_mask         = REGULATOR_CHANGE_MODE
            | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = &omap3_stalker_vpll2_supply,
};

static struct twl4030_platform_data omap3stalker_twldata = {
      .irq_base   = TWL4030_IRQ_BASE,
      .irq_end    = TWL4030_IRQ_END,

      /* platform_data for children goes here */
      .keypad           = &omap3stalker_kp_data,
      .madc       = &omap3stalker_madc_data,
      .usb        = &omap3stalker_usb_data,
      .gpio       = &omap3stalker_gpio_data,
      .codec            = &omap3stalker_codec_data,
      .vdac       = &omap3_stalker_vdac,
      .vpll2            = &omap3_stalker_vpll2,
};

static struct i2c_board_info __initdata omap3stalker_i2c_boardinfo[] = {
      {
       I2C_BOARD_INFO("twl4030", 0x48),
       .flags           = I2C_CLIENT_WAKE,
       .irq       = INT_34XX_SYS_NIRQ,
       .platform_data   = &omap3stalker_twldata,
       },
};

static struct at24_platform_data fram_info = {
      .byte_len   = (64 * 1024) / 8,
      .page_size  = 8192,
      .flags            = AT24_FLAG_ADDR16 | AT24_FLAG_IRUGO,
};

static struct i2c_board_info __initdata omap3stalker_i2c_boardinfo3[] = {
      {
       I2C_BOARD_INFO("24c64", 0x50),
       .flags           = I2C_CLIENT_WAKE,
       .platform_data   = &fram_info,
       },
};

static int __init omap3_stalker_i2c_init(void)
{
      /*
       * REVISIT: These entries can be set in omap3evm_twl_data
       * after a merge with MFD tree
       */
      omap3stalker_twldata.vmmc1 = &omap3stalker_vmmc1;
      omap3stalker_twldata.vsim = &omap3stalker_vsim;

      omap_register_i2c_bus(1, 2600, omap3stalker_i2c_boardinfo,
                        ARRAY_SIZE(omap3stalker_i2c_boardinfo));
      omap_register_i2c_bus(2, 400, NULL, 0);
      omap_register_i2c_bus(3, 400, omap3stalker_i2c_boardinfo3,
                        ARRAY_SIZE(omap3stalker_i2c_boardinfo3));
      return 0;
}

#define OMAP3_STALKER_TS_GPIO 175
static void ads7846_dev_init(void)
{
      if (gpio_request(OMAP3_STALKER_TS_GPIO, "ADS7846 pendown") < 0)
            printk(KERN_ERR "can't get ads7846 pen down GPIO\n");

      gpio_direction_input(OMAP3_STALKER_TS_GPIO);
      gpio_set_debounce(OMAP3_STALKER_TS_GPIO, 310);
}

static int ads7846_get_pendown_state(void)
{
      return !gpio_get_value(OMAP3_STALKER_TS_GPIO);
}

static struct ads7846_platform_data ads7846_config = {
      .x_max                  = 0x0fff,
      .y_max                  = 0x0fff,
      .x_plate_ohms           = 180,
      .pressure_max           = 255,
      .debounce_max           = 10,
      .debounce_tol           = 3,
      .debounce_rep           = 1,
      .get_pendown_state      = ads7846_get_pendown_state,
      .keep_vref_on           = 1,
      .settle_delay_usecs     = 150,
};

static struct omap2_mcspi_device_config ads7846_mcspi_config = {
      .turbo_mode       = 0,
      .single_channel         = 1,  /* 0: slave, 1: master */
};

static struct spi_board_info omap3stalker_spi_board_info[] = {
      [0] = {
             .modalias  = "ads7846",
             .bus_num         = 1,
             .chip_select     = 0,
             .max_speed_hz    = 1500000,
             .controller_data = &ads7846_mcspi_config,
             .irq       = OMAP_GPIO_IRQ(OMAP3_STALKER_TS_GPIO),
             .platform_data   = &ads7846_config,
      },
};

static struct omap_board_config_kernel omap3_stalker_config[] __initdata = {
};

static void __init omap3_stalker_init_irq(void)
{
      omap_board_config = omap3_stalker_config;
      omap_board_config_size = ARRAY_SIZE(omap3_stalker_config);
      omap2_init_common_infrastructure();
      omap2_init_common_devices(mt46h32m32lf6_sdrc_params, NULL);
      omap_init_irq();
#ifdef CONFIG_OMAP_32K_TIMER
      omap2_gp_clockevent_set_gptimer(12);
#endif
}

static struct platform_device *omap3_stalker_devices[] __initdata = {
      &omap3_stalker_dss_device,
      &keys_gpio,
};

static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
      .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
      .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
      .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

      .phy_reset = true,
      .reset_gpio_port[0] = -EINVAL,
      .reset_gpio_port[1] = 21,
      .reset_gpio_port[2] = -EINVAL,
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
      OMAP3_MUX(SYS_NIRQ, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP |
              OMAP_PIN_OFF_INPUT_PULLUP | OMAP_PIN_OFF_WAKEUPENABLE),
      OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
              OMAP_PIN_OFF_INPUT_PULLUP | OMAP_PIN_OFF_WAKEUPENABLE),
      {.reg_offset = OMAP_MUX_TERMINATOR},
};
#endif

static struct omap_musb_board_data musb_board_data = {
      .interface_type   = MUSB_INTERFACE_ULPI,
      .mode       = MUSB_OTG,
      .power            = 100,
};

static void __init omap3_stalker_init(void)
{
      omap3_mux_init(board_mux, OMAP_PACKAGE_CUS);

      omap3_stalker_i2c_init();

      platform_add_devices(omap3_stalker_devices,
                       ARRAY_SIZE(omap3_stalker_devices));

      spi_register_board_info(omap3stalker_spi_board_info,
                        ARRAY_SIZE(omap3stalker_spi_board_info));

      omap_serial_init();
      usb_musb_init(&musb_board_data);
      usb_ehci_init(&ehci_pdata);
      ads7846_dev_init();

      omap_mux_init_gpio(21, OMAP_PIN_OUTPUT);
      omap_mux_init_gpio(18, OMAP_PIN_INPUT_PULLUP);

      omap3stalker_init_eth();
      omap3_stalker_display_init();
/* Ensure SDRC pins are mux'd for self-refresh */
      omap_mux_init_signal("sdr_cke0", OMAP_PIN_OUTPUT);
      omap_mux_init_signal("sdr_cke1", OMAP_PIN_OUTPUT);
}

MACHINE_START(SBC3530, "OMAP3 STALKER")
      /* Maintainer: Jason Lam -lzg@ema-tech.com */
      .boot_params            = 0x80000100,
      .map_io                 = omap3_map_io,
      .init_irq         = omap3_stalker_init_irq,
      .init_machine           = omap3_stalker_init,
      .timer                  = &omap_timer,
MACHINE_END

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