// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2016 Linaro.
 * Viresh Kumar <viresh.kumar@linaro.org>
 */

#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>

#include "cpufreq-dt.h"

/*
 * Machines for which the cpufreq device is *always* created, mostly used for
 * platforms using "operating-points" (V1) property.
 */
static const struct of_device_id allowlist[] __initconst = {
        { .compatible = "allwinner,sun4i-a10", },
        { .compatible = "allwinner,sun5i-a10s", },
        { .compatible = "allwinner,sun5i-a13", },
        { .compatible = "allwinner,sun5i-r8", },
        { .compatible = "allwinner,sun6i-a31", },
        { .compatible = "allwinner,sun6i-a31s", },
        { .compatible = "allwinner,sun7i-a20", },
        { .compatible = "allwinner,sun8i-a23", },
        { .compatible = "allwinner,sun8i-a83t", },
        { .compatible = "allwinner,sun8i-h3", },

        { .compatible = "apm,xgene-shadowcat", },

        { .compatible = "arm,integrator-ap", },
        { .compatible = "arm,integrator-cp", },

        { .compatible = "hisilicon,hi3660", },

        { .compatible = "fsl,imx27", },
        { .compatible = "fsl,imx51", },
        { .compatible = "fsl,imx53", },

        { .compatible = "marvell,berlin", },
        { .compatible = "marvell,pxa250", },
        { .compatible = "marvell,pxa270", },

        { .compatible = "samsung,exynos3250", },
        { .compatible = "samsung,exynos4210", },
        { .compatible = "samsung,exynos5250", },
#ifndef CONFIG_BL_SWITCHER
        { .compatible = "samsung,exynos5800", },
#endif

        { .compatible = "renesas,emev2", },
        { .compatible = "renesas,r7s72100", },
        { .compatible = "renesas,r8a73a4", },
        { .compatible = "renesas,r8a7740", },
        { .compatible = "renesas,r8a7742", },
        { .compatible = "renesas,r8a7743", },
        { .compatible = "renesas,r8a7744", },
        { .compatible = "renesas,r8a7745", },
        { .compatible = "renesas,r8a7778", },
        { .compatible = "renesas,r8a7779", },
        { .compatible = "renesas,r8a7790", },
        { .compatible = "renesas,r8a7791", },
        { .compatible = "renesas,r8a7792", },
        { .compatible = "renesas,r8a7793", },
        { .compatible = "renesas,r8a7794", },
        { .compatible = "renesas,sh73a0", },

        { .compatible = "rockchip,rk2928", },
        { .compatible = "rockchip,rk3036", },
        { .compatible = "rockchip,rk3066a", },
        { .compatible = "rockchip,rk3066b", },
        { .compatible = "rockchip,rk3188", },
        { .compatible = "rockchip,rk3228", },
        { .compatible = "rockchip,rk3288", },
        { .compatible = "rockchip,rk3328", },
        { .compatible = "rockchip,rk3366", },
        { .compatible = "rockchip,rk3368", },
        { .compatible = "rockchip,rk3399",
          .data = &(struct cpufreq_dt_platform_data)
                { .have_governor_per_policy = true, },
        },

        { .compatible = "st-ericsson,u8500", },
        { .compatible = "st-ericsson,u8540", },
        { .compatible = "st-ericsson,u9500", },
        { .compatible = "st-ericsson,u9540", },

        { .compatible = "starfive,jh7110", },
        { .compatible = "starfive,jh7110s", },

        { .compatible = "ti,omap2", },
        { .compatible = "ti,omap4", },
        { .compatible = "ti,omap5", },

        { .compatible = "xlnx,zynq-7000", },
        { .compatible = "xlnx,zynqmp", },

        { }
};

/*
 * Machines for which the cpufreq device is *not* created, mostly used for
 * platforms using "operating-points-v2" property.
 */
static const struct of_device_id blocklist[] __initconst = {
        { .compatible = "airoha,an7583", },
        { .compatible = "airoha,en7581", },

        { .compatible = "allwinner,sun50i-a100" },
        { .compatible = "allwinner,sun50i-h6", },
        { .compatible = "allwinner,sun50i-h616", },
        { .compatible = "allwinner,sun50i-h618", },
        { .compatible = "allwinner,sun50i-h700", },

        { .compatible = "apple,arm-platform", },

        { .compatible = "arm,vexpress", },

        { .compatible = "calxeda,highbank", },
        { .compatible = "calxeda,ecx-2000", },

        { .compatible = "fsl,imx7ulp", },
        { .compatible = "fsl,imx7d", },
        { .compatible = "fsl,imx7s", },
        { .compatible = "fsl,imx8mq", },
        { .compatible = "fsl,imx8mm", },
        { .compatible = "fsl,imx8mn", },
        { .compatible = "fsl,imx8mp", },

        { .compatible = "marvell,armadaxp", },

        { .compatible = "mediatek,mt2701", },
        { .compatible = "mediatek,mt2712", },
        { .compatible = "mediatek,mt7622", },
        { .compatible = "mediatek,mt7623", },
        { .compatible = "mediatek,mt8167", },
        { .compatible = "mediatek,mt817x", },
        { .compatible = "mediatek,mt8173", },
        { .compatible = "mediatek,mt8176", },
        { .compatible = "mediatek,mt8183", },
        { .compatible = "mediatek,mt8186", },
        { .compatible = "mediatek,mt8365", },
        { .compatible = "mediatek,mt8516", },

        { .compatible = "nvidia,tegra20", },
        { .compatible = "nvidia,tegra30", },
        { .compatible = "nvidia,tegra114", },
        { .compatible = "nvidia,tegra124", },
        { .compatible = "nvidia,tegra186", },
        { .compatible = "nvidia,tegra194", },
        { .compatible = "nvidia,tegra210", },
        { .compatible = "nvidia,tegra234", },

        { .compatible = "qcom,apq8096", },
        { .compatible = "qcom,msm8909", },
        { .compatible = "qcom,msm8996", },
        { .compatible = "qcom,msm8998", },
        { .compatible = "qcom,qcm2290", },
        { .compatible = "qcom,qcm6490", },
        { .compatible = "qcom,qcs404", },
        { .compatible = "qcom,qcs8300", },
        { .compatible = "qcom,qdu1000", },
        { .compatible = "qcom,sa8155p" },
        { .compatible = "qcom,sa8540p" },
        { .compatible = "qcom,sa8775p" },
        { .compatible = "qcom,sc7180", },
        { .compatible = "qcom,sc7280", },
        { .compatible = "qcom,sc8180x", },
        { .compatible = "qcom,sc8280xp", },
        { .compatible = "qcom,sdm670", },
        { .compatible = "qcom,sdm845", },
        { .compatible = "qcom,sdx75", },
        { .compatible = "qcom,sm6115", },
        { .compatible = "qcom,sm6125", },
        { .compatible = "qcom,sm6150", },
        { .compatible = "qcom,sm6350", },
        { .compatible = "qcom,sm6375", },
        { .compatible = "qcom,sm7125", },
        { .compatible = "qcom,sm7225", },
        { .compatible = "qcom,sm7325", },
        { .compatible = "qcom,sm8150", },
        { .compatible = "qcom,sm8250", },
        { .compatible = "qcom,sm8350", },
        { .compatible = "qcom,sm8450", },
        { .compatible = "qcom,sm8550", },
        { .compatible = "qcom,sm8650", },

        { .compatible = "st,stih407", },
        { .compatible = "st,stih410", },
        { .compatible = "st,stih418", },

        { .compatible = "ti,am33xx", },
        { .compatible = "ti,am43", },
        { .compatible = "ti,dra7", },
        { .compatible = "ti,omap3", },
        { .compatible = "ti,am625", },
        { .compatible = "ti,am62a7", },
        { .compatible = "ti,am62d2", },
        { .compatible = "ti,am62l3", },
        { .compatible = "ti,am62p5", },

        { .compatible = "qcom,ipq5332", },
        { .compatible = "qcom,ipq5424", },
        { .compatible = "qcom,ipq6018", },
        { .compatible = "qcom,ipq8064", },
        { .compatible = "qcom,ipq8074", },
        { .compatible = "qcom,ipq9574", },
        { .compatible = "qcom,apq8064", },
        { .compatible = "qcom,msm8974", },
        { .compatible = "qcom,msm8960", },

        { }
};

static bool __init cpu0_node_has_opp_v2_prop(void)
{
        struct device_node *np __free(device_node) = of_cpu_device_node_get(0);
        bool ret = false;

        if (of_property_present(np, "operating-points-v2"))
                ret = true;

        return ret;
}

static int __init cpufreq_dt_platdev_init(void)
{
        const void *data = NULL;

        if (of_machine_device_match(allowlist)) {
                data = of_machine_get_match_data(allowlist);
                goto create_pdev;
        }

        if (cpu0_node_has_opp_v2_prop() && !of_machine_device_match(blocklist))
                goto create_pdev;

        return -ENODEV;

create_pdev:
        return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt",
                               -1, data,
                               sizeof(struct cpufreq_dt_platform_data)));
}
core_initcall(cpufreq_dt_platdev_init);