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.h> |
10 | #include <linux/platform_device.h> |
11 | #include <linux/soc/mediatek/mtk-cmdq.h> |
12 | |
13 | #include "mtk_disp_drv.h" |
14 | #include "mtk_drm_crtc.h" |
15 | #include "mtk_drm_ddp_comp.h" |
16 | #include "mtk_drm_drv.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 | |
29 | struct mtk_disp_color_data { |
30 | unsigned int color_offset; |
31 | }; |
32 | |
33 | /* |
34 | * struct mtk_disp_color - DISP_COLOR driver structure |
35 | * @crtc: associated crtc to report irq events to |
36 | * @data: platform colour driver data |
37 | */ |
38 | struct 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 | |
46 | int mtk_color_clk_enable(struct device *dev) |
47 | { |
48 | struct mtk_disp_color *color = dev_get_drvdata(dev); |
49 | |
50 | return clk_prepare_enable(clk: color->clk); |
51 | } |
52 | |
53 | void mtk_color_clk_disable(struct device *dev) |
54 | { |
55 | struct mtk_disp_color *color = dev_get_drvdata(dev); |
56 | |
57 | clk_disable_unprepare(clk: color->clk); |
58 | } |
59 | |
60 | void 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, value: w, cmdq_reg: &color->cmdq_reg, regs: color->regs, DISP_COLOR_WIDTH(color)); |
67 | mtk_ddp_write(cmdq_pkt, value: h, cmdq_reg: &color->cmdq_reg, regs: color->regs, DISP_COLOR_HEIGHT(color)); |
68 | } |
69 | |
70 | void 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 | addr: color->regs + DISP_COLOR_CFG_MAIN); |
76 | writel(val: 0x1, addr: color->regs + DISP_COLOR_START(color)); |
77 | } |
78 | |
79 | static int mtk_disp_color_bind(struct device *dev, struct device *master, |
80 | void *data) |
81 | { |
82 | return 0; |
83 | } |
84 | |
85 | static void mtk_disp_color_unbind(struct device *dev, struct device *master, |
86 | void *data) |
87 | { |
88 | } |
89 | |
90 | static const struct component_ops mtk_disp_color_component_ops = { |
91 | .bind = mtk_disp_color_bind, |
92 | .unbind = mtk_disp_color_unbind, |
93 | }; |
94 | |
95 | static 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, size: sizeof(*priv), GFP_KERNEL); |
103 | if (!priv) |
104 | return -ENOMEM; |
105 | |
106 | priv->clk = devm_clk_get(dev, NULL); |
107 | if (IS_ERR(ptr: priv->clk)) { |
108 | dev_err(dev, "failed to get color clk\n" ); |
109 | return PTR_ERR(ptr: 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(ptr: priv->regs)) { |
115 | dev_err(dev, "failed to ioremap color\n" ); |
116 | return PTR_ERR(ptr: priv->regs); |
117 | } |
118 | #if IS_REACHABLE(CONFIG_MTK_CMDQ) |
119 | ret = cmdq_dev_get_client_reg(dev, client_reg: &priv->cmdq_reg, idx: 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, data: 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 | |
134 | static void mtk_disp_color_remove(struct platform_device *pdev) |
135 | { |
136 | component_del(&pdev->dev, &mtk_disp_color_component_ops); |
137 | } |
138 | |
139 | static const struct mtk_disp_color_data mt2701_color_driver_data = { |
140 | .color_offset = DISP_COLOR_START_MT2701, |
141 | }; |
142 | |
143 | static const struct mtk_disp_color_data mt8167_color_driver_data = { |
144 | .color_offset = DISP_COLOR_START_MT8167, |
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,mt8167-disp-color" , |
155 | .data = &mt8167_color_driver_data}, |
156 | { .compatible = "mediatek,mt8173-disp-color" , |
157 | .data = &mt8173_color_driver_data}, |
158 | {}, |
159 | }; |
160 | MODULE_DEVICE_TABLE(of, mtk_disp_color_driver_dt_match); |
161 | |
162 | struct platform_driver mtk_disp_color_driver = { |
163 | .probe = mtk_disp_color_probe, |
164 | .remove_new = mtk_disp_color_remove, |
165 | .driver = { |
166 | .name = "mediatek-disp-color" , |
167 | .owner = THIS_MODULE, |
168 | .of_match_table = mtk_disp_color_driver_dt_match, |
169 | }, |
170 | }; |
171 | |