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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: James Liao <jamesjj.liao@mediatek.com>
*/
#include <linux/device.h>
#include <linux/io.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
#include "mtk-mmsys.h"
static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
.clk_driver = "clk-mt2701-mm",
.routes = mmsys_default_routing_table,
.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
};
static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
.clk_driver = "clk-mt2712-mm",
.routes = mmsys_default_routing_table,
.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
};
static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
.clk_driver = "clk-mt6779-mm",
};
static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
.clk_driver = "clk-mt6797-mm",
};
static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
.clk_driver = "clk-mt8173-mm",
.routes = mmsys_default_routing_table,
.num_routes = ARRAY_SIZE(mmsys_default_routing_table),
};
static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
.clk_driver = "clk-mt8183-mm",
};
struct mtk_mmsys {
void __iomem *regs;
const struct mtk_mmsys_driver_data *data;
};
void mtk_mmsys_ddp_connect(struct device *dev,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
const struct mtk_mmsys_routes *routes = mmsys->data->routes;
u32 reg;
int i;
for (i = 0; i < mmsys->data->num_routes; i++)
if (cur == routes[i].from_comp && next == routes[i].to_comp) {
reg = readl_relaxed(mmsys->regs + routes[i].addr) | routes[i].val;
writel_relaxed(reg, mmsys->regs + routes[i].addr);
}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);
void mtk_mmsys_ddp_disconnect(struct device *dev,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
const struct mtk_mmsys_routes *routes = mmsys->data->routes;
u32 reg;
int i;
for (i = 0; i < mmsys->data->num_routes; i++)
if (cur == routes[i].from_comp && next == routes[i].to_comp) {
reg = readl_relaxed(mmsys->regs + routes[i].addr) & ~routes[i].val;
writel_relaxed(reg, mmsys->regs + routes[i].addr);
}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
static int mtk_mmsys_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct platform_device *clks;
struct platform_device *drm;
struct mtk_mmsys *mmsys;
int ret;
mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL);
if (!mmsys)
return -ENOMEM;
mmsys->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(mmsys->regs)) {
ret = PTR_ERR(mmsys->regs);
dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret);
return ret;
}
mmsys->data = of_device_get_match_data(&pdev->dev);
platform_set_drvdata(pdev, mmsys);
clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver,
PLATFORM_DEVID_AUTO, NULL, 0);
if (IS_ERR(clks))
return PTR_ERR(clks);
drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
PLATFORM_DEVID_AUTO, NULL, 0);
if (IS_ERR(drm)) {
platform_device_unregister(clks);
return PTR_ERR(drm);
}
return 0;
}
static const struct of_device_id of_match_mtk_mmsys[] = {
{
.compatible = "mediatek,mt2701-mmsys",
.data = &mt2701_mmsys_driver_data,
},
{
.compatible = "mediatek,mt2712-mmsys",
.data = &mt2712_mmsys_driver_data,
},
{
.compatible = "mediatek,mt6779-mmsys",
.data = &mt6779_mmsys_driver_data,
},
{
.compatible = "mediatek,mt6797-mmsys",
.data = &mt6797_mmsys_driver_data,
},
{
.compatible = "mediatek,mt8173-mmsys",
.data = &mt8173_mmsys_driver_data,
},
{
.compatible = "mediatek,mt8183-mmsys",
.data = &mt8183_mmsys_driver_data,
},
{ }
};
static struct platform_driver mtk_mmsys_drv = {
.driver = {
.name = "mtk-mmsys",
.of_match_table = of_match_mtk_mmsys,
},
.probe = mtk_mmsys_probe,
};
builtin_platform_driver(mtk_mmsys_drv);
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