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641ef9e7be
1. Add ovl private data 2. Add rdma private data 3. Add gamma privte data 4. Add main and external path module for crtc create Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
198 lines
4.8 KiB
C
198 lines
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2021 MediaTek Inc.
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*/
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/platform_device.h>
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#include <linux/soc/mediatek/mtk-cmdq.h>
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#include "mtk_disp_drv.h"
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#include "mtk_drm_crtc.h"
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#include "mtk_drm_ddp_comp.h"
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#define DISP_GAMMA_EN 0x0000
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#define GAMMA_EN BIT(0)
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#define DISP_GAMMA_CFG 0x0020
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#define GAMMA_LUT_EN BIT(1)
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#define GAMMA_DITHERING BIT(2)
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#define DISP_GAMMA_SIZE 0x0030
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#define DISP_GAMMA_LUT 0x0700
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#define LUT_10BIT_MASK 0x03ff
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struct mtk_disp_gamma_data {
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bool has_dither;
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};
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/**
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* struct mtk_disp_gamma - DISP_GAMMA driver structure
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* @ddp_comp - structure containing type enum and hardware resources
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* @crtc - associated crtc to report irq events to
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*/
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struct mtk_disp_gamma {
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struct clk *clk;
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void __iomem *regs;
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struct cmdq_client_reg cmdq_reg;
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const struct mtk_disp_gamma_data *data;
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};
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int mtk_gamma_clk_enable(struct device *dev)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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return clk_prepare_enable(gamma->clk);
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}
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void mtk_gamma_clk_disable(struct device *dev)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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clk_disable_unprepare(gamma->clk);
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}
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void mtk_gamma_set_common(void __iomem *regs, struct drm_crtc_state *state)
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{
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unsigned int i, reg;
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struct drm_color_lut *lut;
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void __iomem *lut_base;
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u32 word;
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if (state->gamma_lut) {
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reg = readl(regs + DISP_GAMMA_CFG);
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reg = reg | GAMMA_LUT_EN;
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writel(reg, regs + DISP_GAMMA_CFG);
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lut_base = regs + DISP_GAMMA_LUT;
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lut = (struct drm_color_lut *)state->gamma_lut->data;
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for (i = 0; i < MTK_LUT_SIZE; i++) {
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word = (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) +
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(((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) +
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((lut[i].blue >> 6) & LUT_10BIT_MASK);
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writel(word, (lut_base + i * 4));
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}
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}
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}
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void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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mtk_gamma_set_common(gamma->regs, state);
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}
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void mtk_gamma_config(struct device *dev, unsigned int w,
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unsigned int h, unsigned int vrefresh,
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unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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mtk_ddp_write(cmdq_pkt, h << 16 | w, &gamma->cmdq_reg, gamma->regs,
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DISP_GAMMA_SIZE);
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if (gamma->data && gamma->data->has_dither)
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mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc,
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DISP_GAMMA_CFG, GAMMA_DITHERING, cmdq_pkt);
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}
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void mtk_gamma_start(struct device *dev)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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writel(GAMMA_EN, gamma->regs + DISP_GAMMA_EN);
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}
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void mtk_gamma_stop(struct device *dev)
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{
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struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
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writel_relaxed(0x0, gamma->regs + DISP_GAMMA_EN);
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}
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static int mtk_disp_gamma_bind(struct device *dev, struct device *master,
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void *data)
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{
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return 0;
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}
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static void mtk_disp_gamma_unbind(struct device *dev, struct device *master,
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void *data)
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{
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}
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static const struct component_ops mtk_disp_gamma_component_ops = {
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.bind = mtk_disp_gamma_bind,
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.unbind = mtk_disp_gamma_unbind,
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};
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static int mtk_disp_gamma_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct mtk_disp_gamma *priv;
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struct resource *res;
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int ret;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->clk = devm_clk_get(dev, NULL);
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if (IS_ERR(priv->clk)) {
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dev_err(dev, "failed to get gamma clk\n");
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return PTR_ERR(priv->clk);
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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priv->regs = devm_ioremap_resource(dev, res);
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if (IS_ERR(priv->regs)) {
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dev_err(dev, "failed to ioremap gamma\n");
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return PTR_ERR(priv->regs);
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}
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#if IS_REACHABLE(CONFIG_MTK_CMDQ)
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ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
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if (ret)
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dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
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#endif
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priv->data = of_device_get_match_data(dev);
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platform_set_drvdata(pdev, priv);
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ret = component_add(dev, &mtk_disp_gamma_component_ops);
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if (ret)
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dev_err(dev, "Failed to add component: %d\n", ret);
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return ret;
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}
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static int mtk_disp_gamma_remove(struct platform_device *pdev)
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{
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component_del(&pdev->dev, &mtk_disp_gamma_component_ops);
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return 0;
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}
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static const struct mtk_disp_gamma_data mt8173_gamma_driver_data = {
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.has_dither = true,
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};
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static const struct of_device_id mtk_disp_gamma_driver_dt_match[] = {
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{ .compatible = "mediatek,mt8173-disp-gamma",
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.data = &mt8173_gamma_driver_data},
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{ .compatible = "mediatek,mt8183-disp-gamma"},
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{},
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};
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MODULE_DEVICE_TABLE(of, mtk_disp_gamma_driver_dt_match);
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struct platform_driver mtk_disp_gamma_driver = {
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.probe = mtk_disp_gamma_probe,
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.remove = mtk_disp_gamma_remove,
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.driver = {
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.name = "mediatek-disp-gamma",
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.owner = THIS_MODULE,
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.of_match_table = mtk_disp_gamma_driver_dt_match,
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},
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};
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