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drm/mediatek: drop use of drmP.h
[linux.git] / drivers / gpu / drm / mediatek / mtk_disp_color.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2017 MediaTek Inc.
4  */
5
6 #include <linux/clk.h>
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
13 #include "mtk_drm_crtc.h"
14 #include "mtk_drm_ddp_comp.h"
15
16 #define DISP_COLOR_CFG_MAIN                     0x0400
17 #define DISP_COLOR_START_MT2701                 0x0f00
18 #define DISP_COLOR_START_MT8173                 0x0c00
19 #define DISP_COLOR_START(comp)                  ((comp)->data->color_offset)
20 #define DISP_COLOR_WIDTH(comp)                  (DISP_COLOR_START(comp) + 0x50)
21 #define DISP_COLOR_HEIGHT(comp)                 (DISP_COLOR_START(comp) + 0x54)
22
23 #define COLOR_BYPASS_ALL                        BIT(7)
24 #define COLOR_SEQ_SEL                           BIT(13)
25
26 struct mtk_disp_color_data {
27         unsigned int color_offset;
28 };
29
30 /**
31  * struct mtk_disp_color - DISP_COLOR driver structure
32  * @ddp_comp - structure containing type enum and hardware resources
33  * @crtc - associated crtc to report irq events to
34  */
35 struct mtk_disp_color {
36         struct mtk_ddp_comp                     ddp_comp;
37         struct drm_crtc                         *crtc;
38         const struct mtk_disp_color_data        *data;
39 };
40
41 static inline struct mtk_disp_color *comp_to_color(struct mtk_ddp_comp *comp)
42 {
43         return container_of(comp, struct mtk_disp_color, ddp_comp);
44 }
45
46 static void mtk_color_config(struct mtk_ddp_comp *comp, unsigned int w,
47                              unsigned int h, unsigned int vrefresh,
48                              unsigned int bpc)
49 {
50         struct mtk_disp_color *color = comp_to_color(comp);
51
52         writel(w, comp->regs + DISP_COLOR_WIDTH(color));
53         writel(h, comp->regs + DISP_COLOR_HEIGHT(color));
54 }
55
56 static void mtk_color_start(struct mtk_ddp_comp *comp)
57 {
58         struct mtk_disp_color *color = comp_to_color(comp);
59
60         writel(COLOR_BYPASS_ALL | COLOR_SEQ_SEL,
61                comp->regs + DISP_COLOR_CFG_MAIN);
62         writel(0x1, comp->regs + DISP_COLOR_START(color));
63 }
64
65 static const struct mtk_ddp_comp_funcs mtk_disp_color_funcs = {
66         .config = mtk_color_config,
67         .start = mtk_color_start,
68 };
69
70 static int mtk_disp_color_bind(struct device *dev, struct device *master,
71                                void *data)
72 {
73         struct mtk_disp_color *priv = dev_get_drvdata(dev);
74         struct drm_device *drm_dev = data;
75         int ret;
76
77         ret = mtk_ddp_comp_register(drm_dev, &priv->ddp_comp);
78         if (ret < 0) {
79                 dev_err(dev, "Failed to register component %pOF: %d\n",
80                         dev->of_node, ret);
81                 return ret;
82         }
83
84         return 0;
85 }
86
87 static void mtk_disp_color_unbind(struct device *dev, struct device *master,
88                                   void *data)
89 {
90         struct mtk_disp_color *priv = dev_get_drvdata(dev);
91         struct drm_device *drm_dev = data;
92
93         mtk_ddp_comp_unregister(drm_dev, &priv->ddp_comp);
94 }
95
96 static const struct component_ops mtk_disp_color_component_ops = {
97         .bind   = mtk_disp_color_bind,
98         .unbind = mtk_disp_color_unbind,
99 };
100
101 static int mtk_disp_color_probe(struct platform_device *pdev)
102 {
103         struct device *dev = &pdev->dev;
104         struct mtk_disp_color *priv;
105         int comp_id;
106         int ret;
107
108         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
109         if (!priv)
110                 return -ENOMEM;
111
112         comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DISP_COLOR);
113         if (comp_id < 0) {
114                 dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
115                 return comp_id;
116         }
117
118         ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
119                                 &mtk_disp_color_funcs);
120         if (ret) {
121                 dev_err(dev, "Failed to initialize component: %d\n", ret);
122                 return ret;
123         }
124
125         priv->data = of_device_get_match_data(dev);
126
127         platform_set_drvdata(pdev, priv);
128
129         ret = component_add(dev, &mtk_disp_color_component_ops);
130         if (ret)
131                 dev_err(dev, "Failed to add component: %d\n", ret);
132
133         return ret;
134 }
135
136 static int mtk_disp_color_remove(struct platform_device *pdev)
137 {
138         component_del(&pdev->dev, &mtk_disp_color_component_ops);
139
140         return 0;
141 }
142
143 static const struct mtk_disp_color_data mt2701_color_driver_data = {
144         .color_offset = DISP_COLOR_START_MT2701,
145 };
146
147 static const struct mtk_disp_color_data mt8173_color_driver_data = {
148         .color_offset = DISP_COLOR_START_MT8173,
149 };
150
151 static const struct of_device_id mtk_disp_color_driver_dt_match[] = {
152         { .compatible = "mediatek,mt2701-disp-color",
153           .data = &mt2701_color_driver_data},
154         { .compatible = "mediatek,mt8173-disp-color",
155           .data = &mt8173_color_driver_data},
156         {},
157 };
158 MODULE_DEVICE_TABLE(of, mtk_disp_color_driver_dt_match);
159
160 struct platform_driver mtk_disp_color_driver = {
161         .probe          = mtk_disp_color_probe,
162         .remove         = mtk_disp_color_remove,
163         .driver         = {
164                 .name   = "mediatek-disp-color",
165                 .owner  = THIS_MODULE,
166                 .of_match_table = mtk_disp_color_driver_dt_match,
167         },
168 };