1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2021 MediaTek Inc.
7 #include <linux/component.h>
8 #include <linux/module.h>
9 #include <linux/of_device.h>
10 #include <linux/of_irq.h>
11 #include <linux/platform_device.h>
12 #include <linux/soc/mediatek/mtk-cmdq.h>
14 #include "mtk_disp_drv.h"
15 #include "mtk_drm_crtc.h"
16 #include "mtk_drm_ddp_comp.h"
18 #define DISP_AAL_EN 0x0000
20 #define DISP_AAL_SIZE 0x0030
23 struct mtk_disp_aal_data {
28 * struct mtk_disp_aal - DISP_AAL driver structure
29 * @ddp_comp - structure containing type enum and hardware resources
30 * @crtc - associated crtc to report irq events to
35 struct cmdq_client_reg cmdq_reg;
36 const struct mtk_disp_aal_data *data;
39 int mtk_aal_clk_enable(struct device *dev)
41 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
43 return clk_prepare_enable(aal->clk);
46 void mtk_aal_clk_disable(struct device *dev)
48 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
50 clk_disable_unprepare(aal->clk);
53 void mtk_aal_config(struct device *dev, unsigned int w,
54 unsigned int h, unsigned int vrefresh,
55 unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
57 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
59 mtk_ddp_write(cmdq_pkt, w << 16 | h, &aal->cmdq_reg, aal->regs, DISP_AAL_SIZE);
62 void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
64 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
66 if (aal->data && aal->data->has_gamma)
67 mtk_gamma_set_common(aal->regs, state);
70 void mtk_aal_start(struct device *dev)
72 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
74 writel(AAL_EN, aal->regs + DISP_AAL_EN);
77 void mtk_aal_stop(struct device *dev)
79 struct mtk_disp_aal *aal = dev_get_drvdata(dev);
81 writel_relaxed(0x0, aal->regs + DISP_AAL_EN);
84 static int mtk_disp_aal_bind(struct device *dev, struct device *master,
90 static void mtk_disp_aal_unbind(struct device *dev, struct device *master,
95 static const struct component_ops mtk_disp_aal_component_ops = {
96 .bind = mtk_disp_aal_bind,
97 .unbind = mtk_disp_aal_unbind,
100 static int mtk_disp_aal_probe(struct platform_device *pdev)
102 struct device *dev = &pdev->dev;
103 struct mtk_disp_aal *priv;
104 struct resource *res;
107 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
111 priv->clk = devm_clk_get(dev, NULL);
112 if (IS_ERR(priv->clk)) {
113 dev_err(dev, "failed to get aal clk\n");
114 return PTR_ERR(priv->clk);
117 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
118 priv->regs = devm_ioremap_resource(dev, res);
119 if (IS_ERR(priv->regs)) {
120 dev_err(dev, "failed to ioremap aal\n");
121 return PTR_ERR(priv->regs);
124 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
125 ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
127 dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
130 priv->data = of_device_get_match_data(dev);
131 platform_set_drvdata(pdev, priv);
133 ret = component_add(dev, &mtk_disp_aal_component_ops);
135 dev_err(dev, "Failed to add component: %d\n", ret);
140 static int mtk_disp_aal_remove(struct platform_device *pdev)
142 component_del(&pdev->dev, &mtk_disp_aal_component_ops);
147 static const struct mtk_disp_aal_data mt8173_aal_driver_data = {
151 static const struct of_device_id mtk_disp_aal_driver_dt_match[] = {
152 { .compatible = "mediatek,mt8173-disp-aal",
153 .data = &mt8173_aal_driver_data},
154 { .compatible = "mediatek,mt8183-disp-aal"},
157 MODULE_DEVICE_TABLE(of, mtk_disp_aal_driver_dt_match);
159 struct platform_driver mtk_disp_aal_driver = {
160 .probe = mtk_disp_aal_probe,
161 .remove = mtk_disp_aal_remove,
163 .name = "mediatek-disp-aal",
164 .owner = THIS_MODULE,
165 .of_match_table = mtk_disp_aal_driver_dt_match,