--- /dev/null
+ // SPDX-License-Identifier: GPL-2.0-only
+ /*
+ * Copyright (c) 2021 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_AAL_EN 0x0000
+ #define AAL_EN BIT(0)
+ #define DISP_AAL_SIZE 0x0030
++#define DISP_AAL_OUTPUT_SIZE 0x04d8
+
+
+ struct mtk_disp_aal_data {
+ bool has_gamma;
+ };
+
+ /**
+ * struct mtk_disp_aal - DISP_AAL driver structure
+ * @ddp_comp - structure containing type enum and hardware resources
+ * @crtc - associated crtc to report irq events to
+ */
+ struct mtk_disp_aal {
+ struct clk *clk;
+ void __iomem *regs;
+ struct cmdq_client_reg cmdq_reg;
+ const struct mtk_disp_aal_data *data;
+ };
+
+ int mtk_aal_clk_enable(struct device *dev)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ return clk_prepare_enable(aal->clk);
+ }
+
+ void mtk_aal_clk_disable(struct device *dev)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(aal->clk);
+ }
+
+ void mtk_aal_config(struct device *dev, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ mtk_ddp_write(cmdq_pkt, w << 16 | h, &aal->cmdq_reg, aal->regs, DISP_AAL_SIZE);
++ mtk_ddp_write(cmdq_pkt, w << 16 | h, &aal->cmdq_reg, aal->regs, DISP_AAL_OUTPUT_SIZE);
+ }
+
+ void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ if (aal->data && aal->data->has_gamma)
+ mtk_gamma_set_common(aal->regs, state);
+ }
+
+ void mtk_aal_start(struct device *dev)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ writel(AAL_EN, aal->regs + DISP_AAL_EN);
+ }
+
+ void mtk_aal_stop(struct device *dev)
+ {
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ writel_relaxed(0x0, aal->regs + DISP_AAL_EN);
+ }
+
+ static int mtk_disp_aal_bind(struct device *dev, struct device *master,
+ void *data)
+ {
+ return 0;
+ }
+
+ static void mtk_disp_aal_unbind(struct device *dev, struct device *master,
+ void *data)
+ {
+ }
+
+ static const struct component_ops mtk_disp_aal_component_ops = {
+ .bind = mtk_disp_aal_bind,
+ .unbind = mtk_disp_aal_unbind,
+ };
+
+ static int mtk_disp_aal_probe(struct platform_device *pdev)
+ {
+ struct device *dev = &pdev->dev;
+ struct mtk_disp_aal *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 aal 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 aal\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_aal_component_ops);
+ if (ret)
+ dev_err(dev, "Failed to add component: %d\n", ret);
+
+ return ret;
+ }
+
+ static int mtk_disp_aal_remove(struct platform_device *pdev)
+ {
+ component_del(&pdev->dev, &mtk_disp_aal_component_ops);
+
+ return 0;
+ }
+
+ static const struct mtk_disp_aal_data mt8173_aal_driver_data = {
+ .has_gamma = true,
+ };
+
+ static const struct of_device_id mtk_disp_aal_driver_dt_match[] = {
+ { .compatible = "mediatek,mt8173-disp-aal",
+ .data = &mt8173_aal_driver_data},
+ { .compatible = "mediatek,mt8183-disp-aal"},
+ {},
+ };
+ MODULE_DEVICE_TABLE(of, mtk_disp_aal_driver_dt_match);
+
+ struct platform_driver mtk_disp_aal_driver = {
+ .probe = mtk_disp_aal_probe,
+ .remove = mtk_disp_aal_remove,
+ .driver = {
+ .name = "mediatek-disp-aal",
+ .owner = THIS_MODULE,
+ .of_match_table = mtk_disp_aal_driver_dt_match,
+ },
+ };
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