/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2019 MediaTek Inc.
*/

#include <linux/clk-provider.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>

#include "clk-mtk.h"
#include "clk-gate.h"

#include <dt-bindings/clock/mt6877-clk.h>

#define MT_CCF_BRINGUP		1

/* Regular Number Definition */
#define INV_OFS			-1
#define INV_BIT			-1

/* get spm power status struct to register inside clk_data */
static struct pwr_status ven1_pwr_stat = GATE_PWR_STAT(0xEF0,
		0xEF4, INV_OFS, BIT(14), BIT(14));

static const struct mtk_gate_regs ven1_cg_regs = {
	.set_ofs = 0x4,
	.clr_ofs = 0x8,
	.sta_ofs = 0x0,
};

#define GATE_VEN1(_id, _name, _parent, _shift) {	\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &ven1_cg_regs,			\
		.shift = _shift,			\
		.ops = &mtk_clk_gate_ops_setclr_inv,	\
		.pwr_stat = &ven1_pwr_stat,			\
	}

static const struct mtk_gate ven1_clks[] = {
	GATE_VEN1(CLK_VEN1_CKE0_LARB, "ven1_cke0_larb",
			"venc_ck"/* parent */, 0),
	GATE_VEN1(CLK_VEN1_CKE1_VENC, "ven1_cke1_venc",
			"venc_ck"/* parent */, 4),
	GATE_VEN1(CLK_VEN1_CKE2_JPGENC, "ven1_cke2_jpgenc",
			"venc_ck"/* parent */, 8),
	GATE_VEN1(CLK_VEN1_CKE5_GALS, "ven1_cke5_gals",
			"venc_ck"/* parent */, 28),
};

static int clk_mt6877_ven1_probe(struct platform_device *pdev)
{
	struct clk_onecell_data *clk_data;
	int r;
	struct device_node *node = pdev->dev.of_node;

#if MT_CCF_BRINGUP
	pr_notice("%s init begin\n", __func__);
#endif

	clk_data = mtk_alloc_clk_data(CLK_VEN1_NR_CLK);

	mtk_clk_register_gates(node, ven1_clks, ARRAY_SIZE(ven1_clks),
			clk_data);

	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);

	if (r)
		pr_err("%s(): could not register clock provider: %d\n",
			__func__, r);

#if MT_CCF_BRINGUP
	pr_notice("%s init end\n", __func__);
#endif

	return r;
}

static const struct of_device_id of_match_clk_mt6877_ven[] = {
	{
		.compatible = "mediatek,mt6877-vencsys",
		.data = clk_mt6877_ven1_probe,
	}, {
		/* sentinel */
	}
};


static int clk_mt6877_ven_probe(struct platform_device *pdev)
{
	int (*clk_probe)(struct platform_device *pd);
	int r;

	clk_probe = of_device_get_match_data(&pdev->dev);
	if (!clk_probe)
		return -EINVAL;

	r = clk_probe(pdev);
	if (r)
		dev_err(&pdev->dev,
			"could not register clock provider: %s: %d\n",
			pdev->name, r);

	return r;
}

static struct platform_driver clk_mt6877_ven_drv = {
	.probe = clk_mt6877_ven_probe,
	.driver = {
		.name = "clk-mt6877-ven",
		.of_match_table = of_match_clk_mt6877_ven,
	},
};

static int __init clk_mt6877_ven_init(void)
{
	return platform_driver_register(&clk_mt6877_ven_drv);
}
arch_initcall(clk_mt6877_ven_init);