// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2019 MediaTek Inc.
 * Author: Owen Chen <owen.chen@mediatek.com>
 */

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

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

#include <dt-bindings/clock/mt6765-clk.h>

/* 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 pwr_stat = GATE_PWR_STAT(0x180, 0x184, INV_OFS, BIT(3), BIT(3));

static const struct mtk_gate_regs mm_cg_regs = {
	.set_ofs = 0x104,
	.clr_ofs = 0x108,
	.sta_ofs = 0x100,
};

#define GATE_MM(_id, _name, _parent, _shift) {		\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &mm_cg_regs,			\
		.shift = _shift,			\
		.ops = &mtk_clk_gate_ops_setclr,	\
		.pwr_stat = &pwr_stat,			\
	}

static const struct mtk_gate mm_clks[] __initconst = {
	/* MM */
	GATE_MM(CLK_MM_MDP_RDMA0, "mm_mdp_rdma0", "mm_ck", 0),
	GATE_MM(CLK_MM_MDP_CCORR0, "mm_mdp_ccorr0", "mm_ck", 1),
	GATE_MM(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "mm_ck", 2),
	GATE_MM(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "mm_ck", 3),
	GATE_MM(CLK_MM_MDP_TDSHP0, "mm_mdp_tdshp0", "mm_ck", 4),
	GATE_MM(CLK_MM_MDP_WROT0, "mm_mdp_wrot0", "mm_ck", 5),
	GATE_MM(CLK_MM_MDP_WDMA0, "mm_mdp_wdma0", "mm_ck", 6),
	GATE_MM(CLK_MM_DISP_OVL0, "mm_disp_ovl0", "mm_ck", 7),
	GATE_MM(CLK_MM_DISP_OVL0_2L, "mm_disp_ovl0_2l", "mm_ck", 8),
	GATE_MM(CLK_MM_DISP_RSZ0, "mm_disp_rsz0", "mm_ck", 9),
	GATE_MM(CLK_MM_DISP_RDMA0, "mm_disp_rdma0", "mm_ck", 10),
	GATE_MM(CLK_MM_DISP_WDMA0, "mm_disp_wdma0", "mm_ck", 11),
	GATE_MM(CLK_MM_DISP_COLOR0, "mm_disp_color0", "mm_ck", 12),
	GATE_MM(CLK_MM_DISP_CCORR0, "mm_disp_ccorr0", "mm_ck", 13),
	GATE_MM(CLK_MM_DISP_AAL0, "mm_disp_aal0", "mm_ck", 14),
	GATE_MM(CLK_MM_DISP_GAMMA0, "mm_disp_gamma0", "mm_ck", 15),
	GATE_MM(CLK_MM_DISP_DITHER0, "mm_disp_dither0", "mm_ck", 16),
	GATE_MM(CLK_MM_DSI0, "mm_dsi0", "mm_ck", 17),
	GATE_MM(CLK_MM_FAKE_ENG, "mm_fake_eng", "mm_ck", 18),
	GATE_MM(CLK_MM_SMI_COMMON, "mm_smi_common", "mm_ck", 19),
	GATE_MM(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_ck", 20),
	GATE_MM(CLK_MM_SMI_COMM0, "mm_smi_comm0", "mm_ck", 21),
	GATE_MM(CLK_MM_SMI_COMM1, "mm_smi_comm1", "mm_ck", 22),
	GATE_MM(CLK_MM_CAM_MDP, "mm_cam_mdp_ck", "mm_ck", 23),
	GATE_MM(CLK_MM_SMI_IMG, "mm_smi_img_ck", "mm_ck", 24),
	GATE_MM(CLK_MM_SMI_CAM, "mm_smi_cam_ck", "mm_ck", 25),
	GATE_MM(CLK_MM_IMG_DL_RELAY, "mm_img_dl_relay", "mm_ck", 26),
	GATE_MM(CLK_MM_IMG_DL_ASYNC_TOP, "mm_imgdl_async", "mm_ck", 27),
	GATE_MM(CLK_MM_DIG_DSI, "mm_dig_dsi_ck", "mm_ck", 28),
	GATE_MM(CLK_MM_F26M_HRTWT, "mm_hrtwt", "f_f26m_ck", 29),
};

static int clk_mt6765_mm_probe(struct platform_device *pdev)
{
	struct clk_onecell_data *clk_data;
	int r;
	struct device_node *node = pdev->dev.of_node;

	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
	if (!clk_data)
		return -ENOMEM;

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

	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);

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

	return r;
}

static const struct of_device_id of_match_clk_mt6765_mm[] = {
	{ .compatible = "mediatek,mt6765-mmsys_config", },
	{}
};

static struct platform_driver clk_mt6765_mm_drv = {
	.probe = clk_mt6765_mm_probe,
	.driver = {
		.name = "clk-mt6765-mm",
		.of_match_table = of_match_clk_mt6765_mm,
	},
};

static int __init clk_mt6765_mm_init(void)
{
	return platform_driver_register(&clk_mt6765_mm_drv);
}

static void __exit clk_mt6765_mm_exit(void)
{
}

postcore_initcall(clk_mt6765_mm_init);
module_exit(clk_mt6765_mm_exit);
MODULE_LICENSE("GPL");