/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <debug.h>
#include <platform/iomap.h>
#include <reg.h>
#include <target.h>
#include <platform.h>
#include <uart_dm.h>
#include <mmc.h>
#include <platform/gpio.h>
#include <spmi.h>
#include <board.h>
#include <smem.h>
#include <baseband.h>
#include <dev/keys.h>
#include <pm8x41.h>
#include <crypto5_wrapper.h>
#include <hsusb.h>

extern  bool target_use_signed_kernel(void);

#define PMIC_ARB_CHANNEL_NUM               0
#define PMIC_ARB_OWNER_ID                  0

#define CRYPTO_ENGINE_INSTANCE             1
#define CRYPTO_ENGINE_EE                   1
#define CRYPTO_ENGINE_FIFO_SIZE            64
#define CRYPTO_ENGINE_READ_PIPE            3
#define CRYPTO_ENGINE_WRITE_PIPE           2
#define CRYPTO_ENGINE_CMD_ARRAY_SIZE       20

#define TLMM_VOL_UP_BTN_GPIO    106

static uint32_t mmc_sdc_base[] =
	{ MSM_SDC1_BASE, MSM_SDC2_BASE, MSM_SDC3_BASE };

void target_early_init(void)
{
#if WITH_DEBUG_UART
	uart_dm_init(1, 0, BLSP1_UART2_BASE);
#endif
}

/* Return 1 if vol_up pressed */
static int target_volume_up()
{
	uint8_t status = 0;

	gpio_tlmm_config(TLMM_VOL_UP_BTN_GPIO, 0, GPIO_INPUT, GPIO_PULL_UP, GPIO_2MA, GPIO_ENABLE);

	thread_sleep(10);

	/* Get status of GPIO */
	status = gpio_status(TLMM_VOL_UP_BTN_GPIO);

	/* Active low signal. */
	return !status;
}

/* Return 1 if vol_down pressed */
uint32_t target_volume_down()
{
	/* Volume down button tied in with PMIC RESIN. */
	return pm8x41_resin_status();
}

static void target_keystatus()
{
	keys_init();

	if(target_volume_down())
		keys_post_event(KEY_VOLUMEDOWN, 1);

	if(target_volume_up())
		keys_post_event(KEY_VOLUMEUP, 1);
}

/* Set up params for h/w CRYPTO_ENGINE. */
void target_crypto_init_params()
{
	struct crypto_init_params ce_params;

	/* Set up base addresses and instance. */
	ce_params.crypto_instance  = CRYPTO_ENGINE_INSTANCE;
	ce_params.crypto_base      = MSM_CE1_BASE;
	ce_params.bam_base         = MSM_CE1_BAM_BASE;

	/* Set up BAM config. */
	ce_params.bam_ee           = CRYPTO_ENGINE_EE;
	ce_params.pipes.read_pipe  = CRYPTO_ENGINE_READ_PIPE;
	ce_params.pipes.write_pipe = CRYPTO_ENGINE_WRITE_PIPE;

	/* Assign buffer sizes. */
	ce_params.num_ce           = CRYPTO_ENGINE_CMD_ARRAY_SIZE;
	ce_params.read_fifo_size   = CRYPTO_ENGINE_FIFO_SIZE;
	ce_params.write_fifo_size  = CRYPTO_ENGINE_FIFO_SIZE;

	crypto_init_params(&ce_params);
}

void target_init(void)
{
	uint32_t base_addr;
	uint8_t slot;

	dprintf(INFO, "target_init()\n");

	spmi_init(PMIC_ARB_CHANNEL_NUM, PMIC_ARB_OWNER_ID);

	target_keystatus();

	/* Trying Slot 1*/
	slot = 1;
	base_addr = mmc_sdc_base[slot - 1];
	if (mmc_boot_main(slot, base_addr))
	{

		/* Trying Slot 2 next */
		slot = 2;
		base_addr = mmc_sdc_base[slot - 1];
		if (mmc_boot_main(slot, base_addr)) {
			dprintf(CRITICAL, "mmc init failed!");
			ASSERT(0);
		}
	}

	if (target_use_signed_kernel())
		target_crypto_init_params();
}

/* Do any target specific intialization needed before entering fastboot mode */
void target_fastboot_init(void)
{
	/* Set the BOOT_DONE flag in PM8026 */
	pm8x41_set_boot_done();
}

/* Detect the target type */
void target_detect(struct board_data *board)
{
	board->target = LINUX_MACHTYPE_UNKNOWN;
}

/* Detect the modem type */
void target_baseband_detect(struct board_data *board)
{
	uint32_t platform;
	uint32_t platform_subtype;

	platform         = board->platform;
	platform_subtype = board->platform_subtype;

	/*
	 * Look for platform subtype if present, else
	 * check for platform type to decide on the
	 * baseband type
	 */
	switch(platform_subtype)
	{
	case HW_PLATFORM_SUBTYPE_UNKNOWN:
		break;
	default:
		dprintf(CRITICAL, "Platform Subtype : %u is not supported\n", platform_subtype);
		ASSERT(0);
	};

	switch(platform)
	{
	case MSM8826:
	case MSM8626:
	case MSM8226:
		board->baseband = BASEBAND_MSM;
		break;
	default:
		dprintf(CRITICAL, "Platform type: %u is not supported\n", platform);
		ASSERT(0);
	};
}

void target_serialno(unsigned char *buf)
{
	uint32_t serialno;
	if (target_is_emmc_boot()) {
		serialno = mmc_get_psn();
		snprintf((char *)buf, 13, "%x", serialno);
	}
}

unsigned check_reboot_mode(void)
{
	uint32_t restart_reason = 0;

	/* Read reboot reason and scrub it */
	restart_reason = readl(RESTART_REASON_ADDR);
	writel(0x00, RESTART_REASON_ADDR);

	return restart_reason;
}

void reboot_device(unsigned reboot_reason)
{
	writel(reboot_reason, RESTART_REASON_ADDR);

	/* Configure PMIC for warm reset */
	pm8x41_reset_configure(PON_PSHOLD_WARM_RESET);

	/* Drop PS_HOLD for MSM */
	writel(0x00, MPM2_MPM_PS_HOLD);

	mdelay(5000);

	dprintf(CRITICAL, "Rebooting failed\n");
}

crypto_engine_type board_ce_type(void)
{
	return CRYPTO_ENGINE_TYPE_HW;
}

unsigned board_machtype(void)
{
	return 0;
}

void target_usb_stop(void)
{
	/* Disable VBUS mimicing in the controller. */
	ulpi_write(ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT, ULPI_MISC_A_CLEAR);
}

void target_usb_init(void)
{
	uint32_t val;

	/* Select and enable external configuration with USB PHY */
	ulpi_write(ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT, ULPI_MISC_A_SET);

	/* This delay is required for usb enumeration in
	 * fastboot when the target is rebooted
	 * with usb connected.
	 */
	mdelay(70);

	/* Enable sess_vld */
	val = readl(USB_GENCONFIG_2) | GEN2_SESS_VLD_CTRL_EN;
	writel(val, USB_GENCONFIG_2);

	/* Enable external vbus configuration in the LINK */
	val = readl(USB_USBCMD);
	val |= SESS_VLD_CTRL;
	writel(val, USB_USBCMD);
}

unsigned target_pause_for_battery_charge(void)
{
	uint8_t pon_reason = pm8x41_get_pon_reason();

	/* This function will always return 0 to facilitate
	 * automated testing/reboot with usb connected.
	 * uncomment if this feature is needed.
	 */
	/* if ((pon_reason == USB_CHG) || (pon_reason == DC_CHG))
	 *	return 1;
	 */

	return 0;
}