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board-omap3logic.c

/*
 * linux/arch/arm/mach-omap2/board-omap3logic.c
 *
 * Copyright (C) 2010 Li-Pro.Net
 * Stephan Linz <linz@li-pro.net>
 *
 * Copyright (C) 2010 Logic Product Development, Inc.
 * Peter Barada <peter.barada@logicpd.com>
 *
 * Modified from Beagle, EVM, and RX51
 *
 * 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/gpio.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 "mux.h"
#include "hsmmc.h"
#include "timer-gp.h"
#include "control.h"

#include <plat/mux.h>
#include <plat/board.h>
#include <plat/common.h>
#include <plat/gpmc-smsc911x.h>
#include <plat/gpmc.h>
#include <plat/sdrc.h>

#define OMAP3LOGIC_SMSC911X_CS                  1

#define OMAP3530_LV_SOM_MMC_GPIO_CD       110
#define OMAP3530_LV_SOM_MMC_GPIO_WP       126
#define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ 152

#define OMAP3_TORPEDO_MMC_GPIO_CD         127
#define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ         129

static struct regulator_consumer_supply omap3logic_vmmc1_supply = {
      .supply                 = "vmmc",
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data omap3logic_vmmc1 = {
      .constraints = {
            .name             = "VMMC1",
            .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      = &omap3logic_vmmc1_supply,
};

static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
      .gpio_base  = OMAP_MAX_GPIO_LINES,
      .irq_base   = TWL4030_GPIO_IRQ_BASE,
      .irq_end    = TWL4030_GPIO_IRQ_END,
      .use_leds   = true,
      .pullups    = BIT(1),
      .pulldowns  = BIT(2)  | BIT(6)  | BIT(7)  | BIT(8)
                  | BIT(13) | BIT(15) | BIT(16) | BIT(17),
};

static struct twl4030_platform_data omap3logic_twldata = {
      .irq_base   = TWL4030_IRQ_BASE,
      .irq_end    = TWL4030_IRQ_END,

      /* platform_data for children goes here */
      .gpio       = &omap3logic_gpio_data,
      .vmmc1            = &omap3logic_vmmc1,
};

static struct i2c_board_info __initdata omap3logic_i2c_boardinfo[] = {
      {
            I2C_BOARD_INFO("twl4030", 0x48),
            .flags = I2C_CLIENT_WAKE,
            .irq = INT_34XX_SYS_NIRQ,
            .platform_data = &omap3logic_twldata,
      },
};

static int __init omap3logic_i2c_init(void)
{
      omap_register_i2c_bus(1, 2600, omap3logic_i2c_boardinfo,
                        ARRAY_SIZE(omap3logic_i2c_boardinfo));
      return 0;
}

static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
      {
            .name       = "external",
            .mmc        = 1,
            .caps       = MMC_CAP_4_BIT_DATA,
            .gpio_cd    = -EINVAL,
            .gpio_wp    = -EINVAL,
      },
      {}      /* Terminator */
};

static void __init board_mmc_init(void)
{
      if (machine_is_omap3530_lv_som()) {
            /* OMAP3530 LV SOM board */
            board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
            board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
            omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
            omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
      } else if (machine_is_omap3_torpedo()) {
            /* OMAP3 Torpedo board */
            board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
            omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
      } else {
            /* unsupported board */
            printk(KERN_ERR "%s(): unknown machine type\n", __func__);
            return;
      }

      omap2_hsmmc_init(board_mmc_info);
      /* link regulators to MMC adapters */
      omap3logic_vmmc1_supply.dev = board_mmc_info[0].dev;
}

static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
      .cs             = OMAP3LOGIC_SMSC911X_CS,
      .gpio_irq       = -EINVAL,
      .gpio_reset     = -EINVAL,
      .flags          = IORESOURCE_IRQ_LOWLEVEL,
};

/* TODO/FIXME (comment by Peter Barada, LogicPD):
 * Fix the PBIAS voltage for Torpedo MMC1 pins that
 * are used for other needs (IRQs, etc).            */
static void omap3torpedo_fix_pbias_voltage(void)
{
      u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
      u32 reg;

      if (machine_is_omap3_torpedo())
      {
            /* Set the bias for the pin */
            reg = omap_ctrl_readl(control_pbias_offset);

            reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
            omap_ctrl_writel(reg, control_pbias_offset);

            /* 100ms delay required for PBIAS configuration */
            msleep(100);

            reg |= OMAP343X_PBIASLITEVMODE1;
            reg |= OMAP343X_PBIASLITEPWRDNZ1;
            omap_ctrl_writel(reg | 0x300, control_pbias_offset);
      }
}

static inline void __init board_smsc911x_init(void)
{
      if (machine_is_omap3530_lv_som()) {
            /* OMAP3530 LV SOM board */
            board_smsc911x_data.gpio_irq =
                              OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
            omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
      } else if (machine_is_omap3_torpedo()) {
            /* OMAP3 Torpedo board */
            board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
            omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
      } else {
            /* unsupported board */
            printk(KERN_ERR "%s(): unknown machine type\n", __func__);
            return;
      }

      gpmc_smsc911x_init(&board_smsc911x_data);
}

static void __init omap3logic_init_irq(void)
{
      omap2_init_common_infrastructure();
      omap2_init_common_devices(NULL, NULL);
      omap_init_irq();
}

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
      { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static void __init omap3logic_init(void)
{
      omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
      omap3torpedo_fix_pbias_voltage();
      omap3logic_i2c_init();
      omap_serial_init();
      board_mmc_init();
      board_smsc911x_init();

      /* Ensure SDRC pins are mux'd for self-refresh */
      omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
      omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
}

MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
      .boot_params      = 0x80000100,
      .map_io           = omap3_map_io,
      .init_irq   = omap3logic_init_irq,
      .init_machine     = omap3logic_init,
      .timer            = &omap_timer,
MACHINE_END

MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
      .boot_params      = 0x80000100,
      .map_io           = omap3_map_io,
      .init_irq   = omap3logic_init_irq,
      .init_machine     = omap3logic_init,
      .timer            = &omap_timer,
MACHINE_END

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