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drm/mediatek: Separate gamma module
mt8183 gamma module will different with mt8173, so separate gamma for adding private data. 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>
This commit is contained in:
parent
a6b7c98afd
commit
69a4237ab1
6 changed files with 216 additions and 61 deletions
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@ -1,6 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0
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mediatek-drm-y := mtk_disp_color.o \
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mtk_disp_gamma.o \
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mtk_disp_ovl.o \
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mtk_disp_rdma.o \
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mtk_drm_crtc.o \
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@ -27,6 +27,16 @@ void mtk_dpi_stop(struct device *dev);
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void mtk_dsi_ddp_start(struct device *dev);
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void mtk_dsi_ddp_stop(struct device *dev);
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int mtk_gamma_clk_enable(struct device *dev);
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void mtk_gamma_clk_disable(struct device *dev);
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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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void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state);
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void mtk_gamma_set_common(void __iomem *regs, struct drm_crtc_state *state);
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void mtk_gamma_start(struct device *dev);
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void mtk_gamma_stop(struct device *dev);
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void mtk_ovl_bgclr_in_on(struct device *dev);
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void mtk_ovl_bgclr_in_off(struct device *dev);
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void mtk_ovl_bypass_shadow(struct device *dev);
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190
drivers/gpu/drm/mediatek/mtk_disp_gamma.c
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190
drivers/gpu/drm/mediatek/mtk_disp_gamma.c
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@ -0,0 +1,190 @@
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// 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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u32 reserved;
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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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mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc, DISP_GAMMA_CFG,
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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 of_device_id mtk_disp_gamma_driver_dt_match[] = {
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{ .compatible = "mediatek,mt8173-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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@ -55,11 +55,6 @@
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#define DITHER_RELAY_MODE BIT(0)
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#define DISP_DITHER_SIZE 0x0030
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#define DISP_GAMMA_EN 0x0000
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#define DISP_GAMMA_CFG 0x0020
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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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#define OD_RELAYMODE BIT(0)
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#define AAL_EN BIT(0)
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#define GAMMA_EN BIT(0)
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#define GAMMA_LUT_EN BIT(1)
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#define DISP_DITHERING BIT(2)
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#define DITHER_LSB_ERR_SHIFT_R(x) (((x) & 0x7) << 28)
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#define DITHER_OVFLW_BIT_R(x) (((x) & 0x7) << 24)
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clk_disable_unprepare(priv->clk);
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}
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void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
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unsigned int bpc, unsigned int cfg,
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unsigned int dither_en, struct cmdq_pkt *cmdq_pkt)
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mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_AAL_SIZE);
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}
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static void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
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{
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struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
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mtk_gamma_set_common(priv->regs, state);
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}
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static void mtk_aal_start(struct device *dev)
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{
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struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
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@ -335,58 +333,10 @@ static void mtk_dither_stop(struct device *dev)
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writel_relaxed(0x0, priv->regs + DISP_DITHER_EN);
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}
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static 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_ddp_comp_dev *priv = dev_get_drvdata(dev);
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mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, DISP_GAMMA_SIZE);
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mtk_dither_set(dev, bpc, DISP_GAMMA_CFG, cmdq_pkt);
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}
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static void mtk_gamma_start(struct device *dev)
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{
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struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
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writel(GAMMA_EN, priv->regs + DISP_GAMMA_EN);
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}
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static void mtk_gamma_stop(struct device *dev)
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{
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struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
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writel_relaxed(0x0, priv->regs + DISP_GAMMA_EN);
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}
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static void mtk_gamma_set(struct device *dev,
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struct drm_crtc_state *state)
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{
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struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
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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(priv->regs + DISP_GAMMA_CFG);
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reg = reg | GAMMA_LUT_EN;
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writel(reg, priv->regs + DISP_GAMMA_CFG);
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lut_base = priv->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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static const struct mtk_ddp_comp_funcs ddp_aal = {
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.clk_enable = mtk_ddp_clk_enable,
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.clk_disable = mtk_ddp_clk_disable,
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.gamma_set = mtk_gamma_set,
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.gamma_set = mtk_aal_gamma_set,
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.config = mtk_aal_config,
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.start = mtk_aal_start,
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.stop = mtk_aal_stop,
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};
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static const struct mtk_ddp_comp_funcs ddp_gamma = {
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.clk_enable = mtk_ddp_clk_enable,
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.clk_disable = mtk_ddp_clk_disable,
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.clk_enable = mtk_gamma_clk_enable,
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.clk_disable = mtk_gamma_clk_disable,
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.gamma_set = mtk_gamma_set,
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.config = mtk_gamma_config,
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.start = mtk_gamma_start,
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if (type == MTK_DISP_BLS ||
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type == MTK_DISP_COLOR ||
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type == MTK_DISP_GAMMA ||
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type == MTK_DPI ||
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type == MTK_DSI ||
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type == MTK_DISP_OVL ||
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@ -486,11 +486,12 @@ static int mtk_drm_probe(struct platform_device *pdev)
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private->comp_node[comp_id] = of_node_get(node);
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/*
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* Currently only the COLOR, OVL, RDMA, DSI, and DPI blocks have
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* Currently only the COLOR, GAMMA, OVL, RDMA, DSI, and DPI blocks have
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* separate component platform drivers and initialize their own
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* DDP component structure. The others are initialized here.
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*/
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if (comp_type == MTK_DISP_COLOR ||
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comp_type == MTK_DISP_GAMMA ||
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comp_type == MTK_DISP_OVL ||
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comp_type == MTK_DISP_OVL_2L ||
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comp_type == MTK_DISP_RDMA ||
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static struct platform_driver * const mtk_drm_drivers[] = {
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&mtk_disp_color_driver,
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&mtk_disp_gamma_driver,
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&mtk_disp_ovl_driver,
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&mtk_disp_rdma_driver,
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&mtk_dpi_driver,
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@ -47,6 +47,7 @@ struct mtk_drm_private {
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};
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extern struct platform_driver mtk_disp_color_driver;
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extern struct platform_driver mtk_disp_gamma_driver;
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extern struct platform_driver mtk_disp_ovl_driver;
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extern struct platform_driver mtk_disp_rdma_driver;
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extern struct platform_driver mtk_dpi_driver;
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