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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017 MediaTek Inc.
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include "mtk_disp_drv.h"
#include "mtk_drm_crtc.h"
#include "mtk_drm_ddp_comp.h"
#define DISP_COLOR_CFG_MAIN 0x0400
#define DISP_COLOR_START_MT2701 0x0f00
#define DISP_COLOR_START_MT8167 0x0400
#define DISP_COLOR_START_MT8173 0x0c00
#define DISP_COLOR_START(comp) ((comp)->data->color_offset)
#define DISP_COLOR_WIDTH(comp) (DISP_COLOR_START(comp) + 0x50)
#define DISP_COLOR_HEIGHT(comp) (DISP_COLOR_START(comp) + 0x54)
#define COLOR_BYPASS_ALL BIT(7)
#define COLOR_SEQ_SEL BIT(13)
struct mtk_disp_color_data {
unsigned int color_offset;
};
/*
* struct mtk_disp_color - DISP_COLOR driver structure
* @crtc: associated crtc to report irq events to
* @data: platform colour driver data
*/
struct mtk_disp_color {
struct drm_crtc *crtc;
struct clk *clk;
void __iomem *regs;
struct cmdq_client_reg cmdq_reg;
const struct mtk_disp_color_data *data;
};
int mtk_color_clk_enable(struct device *dev)
{
struct mtk_disp_color *color = dev_get_drvdata(dev);
return clk_prepare_enable(color->clk);
}
void mtk_color_clk_disable(struct device *dev)
{
struct mtk_disp_color *color = dev_get_drvdata(dev);
clk_disable_unprepare(color->clk);
}
void mtk_color_config(struct device *dev, unsigned int w,
unsigned int h, unsigned int vrefresh,
unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
{
struct mtk_disp_color *color = dev_get_drvdata(dev);
mtk_ddp_write(cmdq_pkt, w, &color->cmdq_reg, color->regs, DISP_COLOR_WIDTH(color));
mtk_ddp_write(cmdq_pkt, h, &color->cmdq_reg, color->regs, DISP_COLOR_HEIGHT(color));
}
void mtk_color_start(struct device *dev)
{
struct mtk_disp_color *color = dev_get_drvdata(dev);
writel(COLOR_BYPASS_ALL | COLOR_SEQ_SEL,
color->regs + DISP_COLOR_CFG_MAIN);
writel(0x1, color->regs + DISP_COLOR_START(color));
}
static int mtk_disp_color_bind(struct device *dev, struct device *master,
void *data)
{
return 0;
}
static void mtk_disp_color_unbind(struct device *dev, struct device *master,
void *data)
{
}
static const struct component_ops mtk_disp_color_component_ops = {
.bind = mtk_disp_color_bind,
.unbind = mtk_disp_color_unbind,
};
static int mtk_disp_color_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mtk_disp_color *priv;
struct resource *res;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->clk = devm_clk_get(dev, NULL);
if (IS_ERR(priv->clk)) {
dev_err(dev, "failed to get color clk\n");
return PTR_ERR(priv->clk);
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(priv->regs)) {
dev_err(dev, "failed to ioremap color\n");
return PTR_ERR(priv->regs);
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
if (ret)
dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
#endif
priv->data = of_device_get_match_data(dev);
platform_set_drvdata(pdev, priv);
ret = component_add(dev, &mtk_disp_color_component_ops);
if (ret)
dev_err(dev, "Failed to add component: %d\n", ret);
return ret;
}
static int mtk_disp_color_remove(struct platform_device *pdev)
{
return 0;
}
static const struct mtk_disp_color_data mt2701_color_driver_data = {
.color_offset = DISP_COLOR_START_MT2701,
};
static const struct mtk_disp_color_data mt8167_color_driver_data = {
.color_offset = DISP_COLOR_START_MT8167,
};
static const struct mtk_disp_color_data mt8173_color_driver_data = {
.color_offset = DISP_COLOR_START_MT8173,
};
static const struct of_device_id mtk_disp_color_driver_dt_match[] = {
{ .compatible = "mediatek,mt2701-disp-color",
.data = &mt2701_color_driver_data},
{ .compatible = "mediatek,mt8167-disp-color",
.data = &mt8167_color_driver_data},
{ .compatible = "mediatek,mt8173-disp-color",
.data = &mt8173_color_driver_data},
{},
};
MODULE_DEVICE_TABLE(of, mtk_disp_color_driver_dt_match);
struct platform_driver mtk_disp_color_driver = {
.probe = mtk_disp_color_probe,
.remove = mtk_disp_color_remove,
.driver = {
.name = "mediatek-disp-color",
.owner = THIS_MODULE,
.of_match_table = mtk_disp_color_driver_dt_match,
},
};
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