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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#include <linux/soc/mediatek/mtk-cmdq.h>
13
14#include "mtk_disp_drv.h"
15#include "mtk_drm_crtc.h"
16#include "mtk_drm_ddp_comp.h"
17
18#define DISP_COLOR_CFG_MAIN 0x0400
19#define DISP_COLOR_START_MT2701 0x0f00
20#define DISP_COLOR_START_MT8167 0x0400
21#define DISP_COLOR_START_MT8173 0x0c00
22#define DISP_COLOR_START(comp) ((comp)->data->color_offset)
23#define DISP_COLOR_WIDTH(comp) (DISP_COLOR_START(comp) + 0x50)
24#define DISP_COLOR_HEIGHT(comp) (DISP_COLOR_START(comp) + 0x54)
25
26#define COLOR_BYPASS_ALL BIT(7)
27#define COLOR_SEQ_SEL BIT(13)
28
29struct mtk_disp_color_data {
30 unsigned int color_offset;
31};
32
33
34
35
36
37
38struct mtk_disp_color {
39 struct drm_crtc *crtc;
40 struct clk *clk;
41 void __iomem *regs;
42 struct cmdq_client_reg cmdq_reg;
43 const struct mtk_disp_color_data *data;
44};
45
46int mtk_color_clk_enable(struct device *dev)
47{
48 struct mtk_disp_color *color = dev_get_drvdata(dev);
49
50 return clk_prepare_enable(color->clk);
51}
52
53void mtk_color_clk_disable(struct device *dev)
54{
55 struct mtk_disp_color *color = dev_get_drvdata(dev);
56
57 clk_disable_unprepare(color->clk);
58}
59
60void mtk_color_config(struct device *dev, unsigned int w,
61 unsigned int h, unsigned int vrefresh,
62 unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
63{
64 struct mtk_disp_color *color = dev_get_drvdata(dev);
65
66 mtk_ddp_write(cmdq_pkt, w, &color->cmdq_reg, color->regs, DISP_COLOR_WIDTH(color));
67 mtk_ddp_write(cmdq_pkt, h, &color->cmdq_reg, color->regs, DISP_COLOR_HEIGHT(color));
68}
69
70void mtk_color_start(struct device *dev)
71{
72 struct mtk_disp_color *color = dev_get_drvdata(dev);
73
74 writel(COLOR_BYPASS_ALL | COLOR_SEQ_SEL,
75 color->regs + DISP_COLOR_CFG_MAIN);
76 writel(0x1, color->regs + DISP_COLOR_START(color));
77}
78
79static int mtk_disp_color_bind(struct device *dev, struct device *master,
80 void *data)
81{
82 return 0;
83}
84
85static void mtk_disp_color_unbind(struct device *dev, struct device *master,
86 void *data)
87{
88}
89
90static const struct component_ops mtk_disp_color_component_ops = {
91 .bind = mtk_disp_color_bind,
92 .unbind = mtk_disp_color_unbind,
93};
94
95static int mtk_disp_color_probe(struct platform_device *pdev)
96{
97 struct device *dev = &pdev->dev;
98 struct mtk_disp_color *priv;
99 struct resource *res;
100 int ret;
101
102 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
103 if (!priv)
104 return -ENOMEM;
105
106 priv->clk = devm_clk_get(dev, NULL);
107 if (IS_ERR(priv->clk)) {
108 dev_err(dev, "failed to get color clk\n");
109 return PTR_ERR(priv->clk);
110 }
111
112 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
113 priv->regs = devm_ioremap_resource(dev, res);
114 if (IS_ERR(priv->regs)) {
115 dev_err(dev, "failed to ioremap color\n");
116 return PTR_ERR(priv->regs);
117 }
118#if IS_REACHABLE(CONFIG_MTK_CMDQ)
119 ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
120 if (ret)
121 dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
122#endif
123
124 priv->data = of_device_get_match_data(dev);
125 platform_set_drvdata(pdev, priv);
126
127 ret = component_add(dev, &mtk_disp_color_component_ops);
128 if (ret)
129 dev_err(dev, "Failed to add component: %d\n", ret);
130
131 return ret;
132}
133
134static int mtk_disp_color_remove(struct platform_device *pdev)
135{
136 component_del(&pdev->dev, &mtk_disp_color_component_ops);
137
138 return 0;
139}
140
141static const struct mtk_disp_color_data mt2701_color_driver_data = {
142 .color_offset = DISP_COLOR_START_MT2701,
143};
144
145static const struct mtk_disp_color_data mt8167_color_driver_data = {
146 .color_offset = DISP_COLOR_START_MT8167,
147};
148
149static const struct mtk_disp_color_data mt8173_color_driver_data = {
150 .color_offset = DISP_COLOR_START_MT8173,
151};
152
153static const struct of_device_id mtk_disp_color_driver_dt_match[] = {
154 { .compatible = "mediatek,mt2701-disp-color",
155 .data = &mt2701_color_driver_data},
156 { .compatible = "mediatek,mt8167-disp-color",
157 .data = &mt8167_color_driver_data},
158 { .compatible = "mediatek,mt8173-disp-color",
159 .data = &mt8173_color_driver_data},
160 {},
161};
162MODULE_DEVICE_TABLE(of, mtk_disp_color_driver_dt_match);
163
164struct platform_driver mtk_disp_color_driver = {
165 .probe = mtk_disp_color_probe,
166 .remove = mtk_disp_color_remove,
167 .driver = {
168 .name = "mediatek-disp-color",
169 .owner = THIS_MODULE,
170 .of_match_table = mtk_disp_color_driver_dt_match,
171 },
172};
173
