// SPDX-License-Identifier: GPL-2.0
/*
 * xHCI host controller toolkit driver
 *
 * Copyright (C) 2021  MediaTek Inc.
 *
 *  Author: Zhanyong Wang <zhanyong.wang@mediatek.com>
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "xhci-mtk.h"
#include "xhci-mtk-test.h"
#include "xhci-mtk-unusual.h"


u32 binary_write_width1(u32 __iomem *addr, u32 shift, const char *buf)
{
	u32 val = 0;

	if (!strncmp(buf, STRNG_0_WIDTH_1, BIT_WIDTH_1))
		val = 0;
	else if (!strncmp(buf, STRNG_1_WIDTH_1, BIT_WIDTH_1))
		val = 1;
	else
		val = 0xFFFFFFFF;

	if (val <= 1)
		val = usb20hqa_write(addr, shift, MSK_WIDTH_1, val);

	return val;
}

u32 binary_write_width3(u32 __iomem *addr, u32 shift, const char *buf)
{
	u32 val = 0;

	if (!strncmp(buf, STRNG_0_WIDTH_3, BIT_WIDTH_3))
		val = 0;
	else if (!strncmp(buf, STRNG_1_WIDTH_3, BIT_WIDTH_3))
		val = 1;
	else if (!strncmp(buf, STRNG_2_WIDTH_3, BIT_WIDTH_3))
		val = 2;
	else if (!strncmp(buf, STRNG_3_WIDTH_3, BIT_WIDTH_3))
		val = 3;
	else if (!strncmp(buf, STRNG_4_WIDTH_3, BIT_WIDTH_3))
		val = 4;
	else if (!strncmp(buf, STRNG_5_WIDTH_3, BIT_WIDTH_3))
		val = 5;
	else if (!strncmp(buf, STRNG_6_WIDTH_3, BIT_WIDTH_3))
		val = 6;
	else if (!strncmp(buf, STRNG_7_WIDTH_3, BIT_WIDTH_3))
		val = 7;
	else
		val = 0xFFFFFFFF;

	if (val <= 7)
		val = usb20hqa_write(addr, shift, MSK_WIDTH_3, val);

	return val;
}

u32 binary_write_width4(u32 __iomem *addr, u32 shift, const char *buf)
{
	u32 val = 0;

	if (!strncmp(buf, STRNG_0_WIDTH_4, BIT_WIDTH_4))
		val = 0;
	else if (!strncmp(buf, STRNG_1_WIDTH_4, BIT_WIDTH_4))
		val = 1;
	else if (!strncmp(buf, STRNG_2_WIDTH_4, BIT_WIDTH_4))
		val = 2;
	else if (!strncmp(buf, STRNG_3_WIDTH_4, BIT_WIDTH_4))
		val = 3;
	else if (!strncmp(buf, STRNG_4_WIDTH_4, BIT_WIDTH_4))
		val = 4;
	else if (!strncmp(buf, STRNG_5_WIDTH_4, BIT_WIDTH_4))
		val = 5;
	else if (!strncmp(buf, STRNG_6_WIDTH_4, BIT_WIDTH_4))
		val = 6;
	else if (!strncmp(buf, STRNG_7_WIDTH_4, BIT_WIDTH_4))
		val = 7;
	else if (!strncmp(buf, STRNG_8_WIDTH_4, BIT_WIDTH_4))
		val = 8;
	else if (!strncmp(buf, STRNG_9_WIDTH_4, BIT_WIDTH_4))
		val = 9;
	else if (!strncmp(buf, STRNG_A_WIDTH_4, BIT_WIDTH_4))
		val = 10;
	else if (!strncmp(buf, STRNG_B_WIDTH_4, BIT_WIDTH_4))
		val = 11;
	else if (!strncmp(buf, STRNG_C_WIDTH_4, BIT_WIDTH_4))
		val = 12;
	else if (!strncmp(buf, STRNG_D_WIDTH_4, BIT_WIDTH_4))
		val = 13;
	else if (!strncmp(buf, STRNG_E_WIDTH_4, BIT_WIDTH_4))
		val = 14;
	else if (!strncmp(buf, STRNG_F_WIDTH_4, BIT_WIDTH_4))
		val = 15;
	else
		val = 0xFFFFFFFF;

	if (val <= 15)
		val = usb20hqa_write(addr, shift, MSK_WIDTH_4, val);

	return val;
}

u32 bin2str(u32 value, u32 width, char *buffer)
{
	int i, temp;

	temp = value;
	buffer[width] = '\0';
	for (i = (width - 1); i >= 0; i--) {
		buffer[i] = '0';
		if (value % 2)
			buffer[i] = '1';

		value /= 2;
	}

	return value;
}

int query_phy_addr(struct device_node *np, int *start, u32 *addr, u32 *length, int type)
{
	int ret = -EPERM;
	struct of_phandle_args args;
	struct resource res;
	struct device_node  *node = np;
	int numphys = 0;
	int index;

	if (np == NULL || start == NULL || addr == NULL || length == NULL)
		return -EINVAL;

	while (node) {
		numphys = of_count_phandle_with_args(node,
			"phys", "#phy-cells");
		for (index = *start;
		     (numphys > 0) && index < numphys; index++) {
			ret = of_parse_phandle_with_args(node,
				"phys", "#phy-cells",
				index, &args);
			if (ret < 0)
				break;

			if (args.args[0] == type) {
				ret = of_address_to_resource(args.np,
					0, &res);
				if (ret < 0) {
					of_node_put(args.np);
					break;
				}

				*addr   = res.start;
				*length = (u32)resource_size(&res);
				*start  = index;
				if (!of_device_is_available(args.np))
					ret = -EACCES;

				of_node_put(args.np);
				break;
			}
		}
		if (index < numphys)
			break;

		node = node->parent;
	}

	ret = index < numphys ? ret : -EPERM;
	return ret;
}

int query_reg_addr(struct platform_device *pdev, u32 *addr, u32 *length, const char* name)
{
	int ret = -EPERM;
	struct resource *pres;
	struct platform_device *device = pdev;

	if (pdev == NULL || addr == NULL || length == NULL)
		return -EINVAL;

	while (device) {
		pres = platform_get_resource_byname(device, IORESOURCE_MEM, name);
		if (pres != NULL) {
			*addr   = pres->start;
			*length = (u32)resource_size(pres);
			ret = 0;
			break;
		}

		if (device->dev.parent == NULL)
			break;

		device = to_platform_device(device->dev.parent);
	}

	return ret;
}