/*
 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/clock.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.h>
#include <usb.h>

DECLARE_GLOBAL_DATA_PTR;

#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

int dram_init(void)
{
#if defined(CONFIG_MX6DL) && !defined(CONFIG_MX6DL_LPDDR2) && \
	defined(CONFIG_DDR_32BIT)
	gd->ram_size = ((phys_size_t)CONFIG_DDR_MB * 1024 * 1024) / 2;
#else
	gd->ram_size = (phys_size_t)CONFIG_DDR_MB * 1024 * 1024;
#endif

	return 0;
}

iomux_v3_cfg_t const uart4_pads[] = {
	MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};

iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_NANDF_CS0__GPIO6_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

iomux_v3_cfg_t const usdhc4_pads[] = {
	MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
};

iomux_v3_cfg_t const enet_pads[] = {
	MX6_PAD_KEY_COL1__ENET_MDIO        | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_KEY_COL2__ENET_MDC         | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TXC__RGMII_TXC  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD0__RGMII_TD0  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD1__RGMII_TD1  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD2__RGMII_TD2  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD3__RGMII_TD3  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RXC__RGMII_RXC  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD0__RGMII_RD0  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD1__RGMII_RD1  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD2__RGMII_RD2  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD3__RGMII_RD3  | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
};


static void setup_iomux_uart(void)
{
	imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
}

static void setup_iomux_enet(void)
{
	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
}

#ifdef CONFIG_FSL_ESDHC
struct fsl_esdhc_cfg usdhc_cfg[2] = {
	{USDHC3_BASE_ADDR},
	{USDHC4_BASE_ADDR},
};

int board_mmc_get_env_dev(int devno)
{
	return devno - 2;
}

int board_mmc_getcd(struct mmc *mmc)
{
	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
	int ret;

	if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
		gpio_direction_input(IMX_GPIO_NR(6, 11));
		ret = !gpio_get_value(IMX_GPIO_NR(6, 11));
	} else /* Don't have the CD GPIO pin on board */
		ret = 1;

	return ret;
}

int board_mmc_init(bd_t *bis)
{
	int ret;
	u32 index = 0;

	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);

	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
		switch (index) {
		case 0:
			imx_iomux_v3_setup_multiple_pads(
				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
			break;
		case 1:
			imx_iomux_v3_setup_multiple_pads(
				usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
			break;
		default:
			printf("Warning: you configured more USDHC controllers"
				"(%d) then supported by the board (%d)\n",
				index + 1, CONFIG_SYS_FSL_USDHC_NUM);
			return -EINVAL;
		}

		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
		if (ret)
			return ret;
	}

	return 0;
}
#endif

#define MII_MMD_ACCESS_CTRL_REG		0xd
#define MII_MMD_ACCESS_ADDR_DATA_REG	0xe
#define MII_DBG_PORT_REG		0x1d
#define MII_DBG_PORT2_REG		0x1e

int fecmxc_mii_postcall(int phy)
{
	unsigned short val;

	/*
	 * Due to the i.MX6Q Armadillo2 board HW design,there is
	 * no 125Mhz clock input from SOC. In order to use RGMII,
	 * We need enable AR8031 ouput a 125MHz clk from CLK_25M
	 */
	miiphy_write("FEC", phy, MII_MMD_ACCESS_CTRL_REG, 0x7);
	miiphy_write("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, 0x8016);
	miiphy_write("FEC", phy, MII_MMD_ACCESS_CTRL_REG, 0x4007);
	miiphy_read("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, &val);
	val &= 0xffe3;
	val |= 0x18;
	miiphy_write("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, val);

	/* For the RGMII phy, we need enable tx clock delay */
	miiphy_write("FEC", phy, MII_DBG_PORT_REG, 0x5);
	miiphy_read("FEC", phy, MII_DBG_PORT2_REG, &val);
	val |= 0x0100;
	miiphy_write("FEC", phy, MII_DBG_PORT2_REG, val);

	miiphy_write("FEC", phy, MII_BMCR, 0xa100);

	return 0;
}

int board_eth_init(bd_t *bis)
{
	struct eth_device *dev;
	int ret = cpu_eth_init(bis);

	if (ret)
		return ret;

	dev = eth_get_dev_by_name("FEC");
	if (!dev) {
		printf("FEC MXC: Unable to get FEC device entry\n");
		return -EINVAL;
	}

	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
	if (ret) {
		printf("FEC MXC: Unable to register FEC mii postcall\n");
		return ret;
	}

	return 0;
}

#ifdef CONFIG_USB_EHCI_MX6
#define USB_OTHERREGS_OFFSET	0x800
#define UCTRL_PWR_POL		(1 << 9)

static iomux_v3_cfg_t const usb_otg_pads[] = {
	MX6_PAD_EIM_D22__USB_OTG_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
};

static void setup_usb(void)
{
	imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
					 ARRAY_SIZE(usb_otg_pads));

	/*
	 * set daisy chain for otg_pin_id on 6q.
	 * for 6dl, this bit is reserved
	 */
	imx_iomux_set_gpr_register(1, 13, 1, 1);
}

int board_ehci_hcd_init(int port)
{
	u32 *usbnc_usb_ctrl;

	if (port > 0)
		return -EINVAL;

	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
				 port * 4);

	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);

	return 0;
}
#endif

int board_early_init_f(void)
{
	setup_iomux_uart();
	setup_iomux_enet();

	return 0;
}

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

#ifdef CONFIG_USB_EHCI_MX6
	setup_usb();
#endif

	return 0;
}

int checkboard(void)
{
#ifdef CONFIG_MX6DL
	puts("Board: MX6DL-Armadillo2\n");
#else
	puts("Board: MX6Q-Armadillo2\n");
#endif

	return 0;
}