drivers/clk/mediatek/clk-mt6735-apmixedsys.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2022 Yassine Oudjana <y.oudjana@protonmail.com>
 */

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

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

#include <dt-bindings/clock/mediatek,mt6735-apmixedsys.h>

#define AP_PLL_CON_5		0x014
#define ARMPLL_CON0		0x200
#define ARMPLL_CON1		0x204
#define ARMPLL_PWR_CON0		0x20c
#define MAINPLL_CON0		0x210
#define MAINPLL_CON1		0x214
#define MAINPLL_PWR_CON0	0x21c
#define UNIVPLL_CON0		0x220
#define UNIVPLL_CON1		0x224
#define UNIVPLL_PWR_CON0	0x22c
#define MMPLL_CON0		0x230
#define MMPLL_CON1		0x234
#define MMPLL_PWR_CON0		0x23c
#define MSDCPLL_CON0		0x240
#define MSDCPLL_CON1		0x244
#define MSDCPLL_PWR_CON0	0x24c
#define VENCPLL_CON0		0x250
#define VENCPLL_CON1		0x254
#define VENCPLL_PWR_CON0	0x25c
#define TVDPLL_CON0		0x260
#define TVDPLL_CON1		0x264
#define TVDPLL_PWR_CON0		0x26c
#define APLL1_CON0		0x270
#define APLL1_CON1		0x274
#define APLL1_CON2		0x278
#define APLL1_PWR_CON0		0x280
#define APLL2_CON0		0x284
#define APLL2_CON1		0x288
#define APLL2_CON2		0x28c
#define APLL2_PWR_CON0		0x294

#define CON0_RST_BAR		BIT(24)

#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _rst_bar_mask,	\
	    _pd_reg, _pd_shift, _tuner_reg, _tuner_en_reg,		\
	    _tuner_en_bit, _pcw_reg, _pcwbits, _flags) {		\
		.id = _id,						\
		.name = _name,						\
		.parent_name = "clk26m",				\
		.reg = _reg,						\
		.pwr_reg = _pwr_reg,					\
		.en_mask = _en_mask,					\
		.rst_bar_mask = _rst_bar_mask,				\
		.pd_reg = _pd_reg,					\
		.pd_shift = _pd_shift,					\
		.tuner_reg = _tuner_reg,				\
		.tuner_en_reg = _tuner_en_reg,				\
		.tuner_en_bit = _tuner_en_bit,				\
		.pcw_reg = _pcw_reg,					\
		.pcw_chg_reg = _pcw_reg,				\
		.pcwbits = _pcwbits,					\
		.flags = _flags,					\
	}

static const struct mtk_pll_data apmixedsys_plls[] = {
	PLL(CLK_APMIXED_ARMPLL, "armpll", ARMPLL_CON0, ARMPLL_PWR_CON0, 0x00000001, 0, ARMPLL_CON1, 24, 0, 0, 0, ARMPLL_CON1, 21, PLL_AO),
	PLL(CLK_APMIXED_MAINPLL, "mainpll", MAINPLL_CON0, MAINPLL_PWR_CON0, 0xf0000101, CON0_RST_BAR, MAINPLL_CON1, 24, 0, 0, 0, MAINPLL_CON1, 21, HAVE_RST_BAR),
	PLL(CLK_APMIXED_UNIVPLL, "univpll", UNIVPLL_CON0, UNIVPLL_PWR_CON0, 0xfc000001, CON0_RST_BAR, UNIVPLL_CON1, 24, 0, 0, 0, UNIVPLL_CON1, 21, HAVE_RST_BAR),
	PLL(CLK_APMIXED_MMPLL, "mmpll", MMPLL_CON0, MMPLL_PWR_CON0, 0x00000001, 0, MMPLL_CON1, 24, 0, 0, 0, MMPLL_CON1, 21, 0),
	PLL(CLK_APMIXED_MSDCPLL, "msdcpll", MSDCPLL_CON0, MSDCPLL_PWR_CON0, 0x00000001, 0, MSDCPLL_CON1, 24, 0, 0, 0, MSDCPLL_CON1, 21, 0),
	PLL(CLK_APMIXED_VENCPLL, "vencpll", VENCPLL_CON0, VENCPLL_PWR_CON0, 0x00000001, CON0_RST_BAR, VENCPLL_CON1, 24, 0, 0, 0, VENCPLL_CON1, 21, HAVE_RST_BAR),
	PLL(CLK_APMIXED_TVDPLL, "tvdpll", TVDPLL_CON0, TVDPLL_PWR_CON0, 0x00000001, 0, TVDPLL_CON1, 24, 0, 0, 0, TVDPLL_CON1, 21, 0),
	PLL(CLK_APMIXED_APLL1, "apll1", APLL1_CON0, APLL1_PWR_CON0, 0x00000001, 0, APLL1_CON0, 4, APLL1_CON2, AP_PLL_CON_5, 0, APLL1_CON1, 31, 0),
	PLL(CLK_APMIXED_APLL2, "apll2", APLL2_CON0, APLL2_PWR_CON0, 0x00000001, 0, APLL2_CON0, 4, APLL2_CON2, AP_PLL_CON_5, 1, APLL2_CON1, 31, 0)
};

static int clk_mt6735_apmixed_probe(struct platform_device *pdev)
{
	void __iomem *base;
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	struct clk_hw_onecell_data *clk_data;
	int ret;

	base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(base))
		return PTR_ERR(base);

	clk_data = mtk_devm_alloc_clk_data(&pdev->dev, ARRAY_SIZE(apmixedsys_plls));
	if (!clk_data)
		return -ENOMEM;
	platform_set_drvdata(pdev, clk_data);

	ret = mtk_clk_register_plls(pdev->dev.of_node, apmixedsys_plls,
				   ARRAY_SIZE(apmixedsys_plls), clk_data);
	if (ret) {
		dev_err(&pdev->dev, "Failed to register PLLs: %d\n", ret);
		return ret;
	}

	ret = devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get,
					  clk_data);
	if (ret)
		dev_err(&pdev->dev,
			"Failed to register clock provider: %d\n", ret);

	return ret;
}

static void clk_mt6735_apmixed_remove(struct platform_device *pdev)
{
	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);

	mtk_clk_unregister_plls(apmixedsys_plls, ARRAY_SIZE(apmixedsys_plls), clk_data);
}

static const struct of_device_id of_match_mt6735_apmixedsys[] = {
	{ .compatible = "mediatek,mt6735-apmixedsys" },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_mt6735_apmixedsys);

static struct platform_driver clk_mt6735_apmixedsys = {
	.probe = clk_mt6735_apmixed_probe,
	.remove = clk_mt6735_apmixed_remove,
	.driver = {
		.name = "clk-mt6735-apmixedsys",
		.of_match_table = of_match_mt6735_apmixedsys,
	},
};
module_platform_driver(clk_mt6735_apmixedsys);

MODULE_AUTHOR("Yassine Oudjana <y.oudjana@protonmail.com>");
MODULE_DESCRIPTION("MediaTek MT6735 apmixedsys clock driver");
MODULE_LICENSE("GPL");