// SPDX-License-Identifier: GPL-2.0-or-later
// SPDX-FileCopyrightText: 2016 Zodiac Inflight Innovation

/* Author: Andrey Smirnov <andrew.smirnov@gmail.com> */

#include <common.h>
#include <init.h>
#include <gpio.h>
#include <environment.h>
#include <linux/clk.h>
#include <dt-bindings/clock/vf610-clock.h>
#include <envfs.h>
#include <mach/bbu.h>


static int expose_signals(const struct gpio *signals,
			  size_t signal_num)
{
	int ret, i;

	ret = gpio_request_array(signals, signal_num);
	if (ret)
		return ret;

	for (i = 0; i < signal_num; i++)
		export_env_ull(signals[i].label, signals[i].gpio);

	return 0;
}

static int zii_vf610_cfu1_expose_signals(void)
{
	static const struct gpio signals[] = {
		{
			.gpio  = 132,
			.flags = GPIOF_IN,
			.label = "fim_sd",
		},
		{
			.gpio  = 118,
			.flags = GPIOF_OUT_INIT_LOW,
			.label = "fim_tdis",
		},
	};

	if (!of_machine_is_compatible("zii,vf610cfu1"))
		return 0;

	return expose_signals(signals, ARRAY_SIZE(signals));
}
late_initcall(zii_vf610_cfu1_expose_signals);

static int zii_vf610_cfu1_spu3_expose_signals(void)
{
	static const struct gpio signals[] = {
		{
			.gpio  = 98,
			.flags = GPIOF_IN,
			.label = "e6352_intn",
		},
	};

	if (!of_machine_is_compatible("zii,vf610spu3") &&
	    !of_machine_is_compatible("zii,vf610cfu1"))
		return 0;

	return expose_signals(signals, ARRAY_SIZE(signals));
}
late_initcall(zii_vf610_cfu1_spu3_expose_signals);

static int zii_vf610_dev_print_clocks(void)
{
	int i;
	struct clk *clk;
	struct device_node *ccm_np;
	const unsigned long MHz = 1000000;
	const char *clk_names[] = { "cpu", "ddr", "bus", "ipg" };

	if (!of_machine_is_compatible("zii,vf610dev"))
		return 0;

	ccm_np = of_find_compatible_node(NULL, NULL, "fsl,vf610-ccm");
	if (!ccm_np) {
		pr_err("Couldn't get CCM node\n");
		return -ENOENT;
	}

	for (i = 0; i < ARRAY_SIZE(clk_names); i++) {
		unsigned long rate;
		const char *name = clk_names[i];

		clk = of_clk_get_by_name(ccm_np, name);
		if (IS_ERR(clk)) {
			pr_err("Failed to get '%s' clock (%ld)\n",
			       name, PTR_ERR(clk));
			return PTR_ERR(clk);
		}

		rate = clk_get_rate(clk);

		pr_info("%s clock : %8lu MHz\n", name, rate / MHz);
	}

	return 0;
}
late_initcall(zii_vf610_dev_print_clocks);

static int zii_vf610_dev_set_hostname(void)
{
	size_t i;
	static const struct {
		const char *compatible;
		const char *hostname;
	} boards[] = {
		{ "zii,vf610dtu", "dtu" },
		{ "zii,vf610spu3", "spu3" },
		{ "zii,vf610spb4", "spb4" },
		{ "zii,vf610cfu1", "cfu1" },
		{ "zii,vf610dev-b", "dev-rev-b" },
		{ "zii,vf610dev-c", "dev-rev-c" },
		{ "zii,vf610scu4-aib", "scu4-aib" },
	};

	if (!of_machine_is_compatible("zii,vf610dev"))
		return 0;

	for (i = 0; i < ARRAY_SIZE(boards); i++) {
		if (of_machine_is_compatible(boards[i].compatible)) {
			barebox_set_hostname(boards[i].hostname);
			break;
		}
	}

	defaultenv_append_directory(defaultenv_zii_common);
	defaultenv_append_directory(defaultenv_zii_vf610_dev);
	return 0;
}
late_initcall(zii_vf610_dev_set_hostname);

static int zii_vf610_dev_register_bbu(void)
{
	int ret;
	if (!of_machine_is_compatible("zii,vf610dev-c") &&
	    !of_machine_is_compatible("zii,vf610dev-b"))
		return 0;

	ret = vf610_bbu_internal_spi_i2c_register_handler("SPI",
							  "/dev/m25p0.bootloader",
							  0);
	if (ret) {
		pr_err("Failed to register SPI BBU handler");
		return ret;
	}

	ret = vf610_bbu_internal_mmc_register_handler("SD",
						      "/dev/mmc1",
						      0);
	if (ret) {
		pr_err("Failed to register SD BBU handler\n");
		return ret;
	}

	return 0;
}
late_initcall(zii_vf610_dev_register_bbu);

static int zii_vf610_register_emmc_bbu(void)
{
	int ret;

	if (!of_machine_is_compatible("zii,vf610spu3") &&
	    !of_machine_is_compatible("zii,vf610cfu1") &&
	    !of_machine_is_compatible("zii,vf610spb4") &&
	    !of_machine_is_compatible("zii,vf610dtu"))
		return 0;

	ret = vf610_bbu_internal_mmcboot_register_handler("eMMC",
					      "/dev/mmc0",
					      BBU_HANDLER_FLAG_DEFAULT);
	if (ret) {
		pr_err("Failed to register eMMC BBU handler\n");
		return ret;
	}

	return 0;
}
late_initcall(zii_vf610_register_emmc_bbu);