drivers/clk/mediatek/clk-mt8135-apmixedsys.c

root/drivers/clk/mediatek/clk-mt8135-apmixedsys.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014 MediaTek Inc.
 *               James Liao <jamesjj.liao@mediatek.com>
 * Copyright (c) 2023 Collabora, Ltd.
 *               AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
 */

#include <dt-bindings/clock/mt8135-clk.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/platform_device.h>

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

#define MT8135_PLL_FMAX         (2000 * MHZ)
#define CON0_MT8135_RST_BAR     BIT(27)

#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift) { \
                .id = _id,                                              \
                .name = _name,                                          \
                .reg = _reg,                                            \
                .pwr_reg = _pwr_reg,                                    \
                .en_mask = _en_mask,                                    \
                .flags = _flags,                                        \
                .rst_bar_mask = CON0_MT8135_RST_BAR,                    \
                .fmax = MT8135_PLL_FMAX,                                \
                .pcwbits = _pcwbits,                                    \
                .pd_reg = _pd_reg,                                      \
                .pd_shift = _pd_shift,                                  \
                .tuner_reg = _tuner_reg,                                \
                .pcw_reg = _pcw_reg,                                    \
                .pcw_shift = _pcw_shift,                                \
        }

static const struct mtk_pll_data plls[] = {
        PLL(CLK_APMIXED_ARMPLL1, "armpll1", 0x200, 0x218, 0x80000000, 0, 21, 0x204, 24, 0x0, 0x204, 0),
        PLL(CLK_APMIXED_ARMPLL2, "armpll2", 0x2cc, 0x2e4, 0x80000000, 0, 21, 0x2d0, 24, 0x0, 0x2d0, 0),
        PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x21c, 0x234, 0xf0000000, HAVE_RST_BAR, 21, 0x21c, 6, 0x0, 0x220, 0),
        PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x238, 0x250, 0xf3000000, HAVE_RST_BAR, 7, 0x238, 6, 0x0, 0x238, 9),
        PLL(CLK_APMIXED_MMPLL, "mmpll", 0x254, 0x26c, 0xf0000000, HAVE_RST_BAR, 21, 0x254, 6, 0x0, 0x258, 0),
        PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x278, 0x290, 0x80000000, 0, 21, 0x278, 6, 0x0, 0x27c, 0),
        PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x294, 0x2ac, 0x80000000, 0, 31, 0x294, 6, 0x0, 0x298, 0),
        PLL(CLK_APMIXED_LVDSPLL, "lvdspll", 0x2b0, 0x2c8, 0x80000000, 0, 21, 0x2b0, 6, 0x0, 0x2b4, 0),
        PLL(CLK_APMIXED_AUDPLL, "audpll", 0x2e8, 0x300, 0x80000000, 0, 31, 0x2e8, 6, 0x2f8, 0x2ec, 0),
        PLL(CLK_APMIXED_VDECPLL, "vdecpll", 0x304, 0x31c, 0x80000000, 0, 21, 0x2b0, 6, 0x0, 0x308, 0),
};

static int clk_mt8135_apmixed_probe(struct platform_device *pdev)
{
        struct clk_hw_onecell_data *clk_data;
        struct device_node *node = pdev->dev.of_node;
        int ret;

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

        ret = mtk_clk_register_plls(&pdev->dev, plls, ARRAY_SIZE(plls),
                                    clk_data);
        if (ret)
                goto free_clk_data;

        ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
        if (ret)
                goto unregister_plls;

        return 0;

unregister_plls:
        mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
free_clk_data:
        mtk_free_clk_data(clk_data);

        return ret;
}

static void clk_mt8135_apmixed_remove(struct platform_device *pdev)
{
        struct device_node *node = pdev->dev.of_node;
        struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);

        of_clk_del_provider(node);
        mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
        mtk_free_clk_data(clk_data);
}

static const struct of_device_id of_match_clk_mt8135_apmixed[] = {
        { .compatible = "mediatek,mt8135-apmixedsys" },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt8135_apmixed);

static struct platform_driver clk_mt8135_apmixed_drv = {
        .probe = clk_mt8135_apmixed_probe,
        .remove = clk_mt8135_apmixed_remove,
        .driver = {
                .name = "clk-mt8135-apmixed",
                .of_match_table = of_match_clk_mt8135_apmixed,
        },
};
module_platform_driver(clk_mt8135_apmixed_drv)

MODULE_DESCRIPTION("MediaTek MT8135 apmixedsys clocks driver");
MODULE_LICENSE("GPL");
Linux
