1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Author: James Liao <jamesjj.liao@mediatek.com>
5  */
6 
7 #include <linux/clk-provider.h>
8 #include <linux/of_device.h>
9 #include <linux/platform_device.h>
10 
11 #include "clk-gate.h"
12 #include "clk-mtk.h"
13 
14 #include <dt-bindings/clock/mt8173-clk.h>
15 
16 static const struct mtk_gate_regs mm0_cg_regs = {
17 	.set_ofs = 0x0104,
18 	.clr_ofs = 0x0108,
19 	.sta_ofs = 0x0100,
20 };
21 
22 static const struct mtk_gate_regs mm1_cg_regs = {
23 	.set_ofs = 0x0114,
24 	.clr_ofs = 0x0118,
25 	.sta_ofs = 0x0110,
26 };
27 
28 #define GATE_MM0(_id, _name, _parent, _shift) {			\
29 		.id = _id,					\
30 		.name = _name,					\
31 		.parent_name = _parent,				\
32 		.regs = &mm0_cg_regs,				\
33 		.shift = _shift,				\
34 		.ops = &mtk_clk_gate_ops_setclr,		\
35 	}
36 
37 #define GATE_MM1(_id, _name, _parent, _shift) {			\
38 		.id = _id,					\
39 		.name = _name,					\
40 		.parent_name = _parent,				\
41 		.regs = &mm1_cg_regs,				\
42 		.shift = _shift,				\
43 		.ops = &mtk_clk_gate_ops_setclr,		\
44 	}
45 
46 static const struct mtk_gate mt8173_mm_clks[] = {
47 	/* MM0 */
48 	GATE_MM0(CLK_MM_SMI_COMMON, "mm_smi_common", "mm_sel", 0),
49 	GATE_MM0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_sel", 1),
50 	GATE_MM0(CLK_MM_CAM_MDP, "mm_cam_mdp", "mm_sel", 2),
51 	GATE_MM0(CLK_MM_MDP_RDMA0, "mm_mdp_rdma0", "mm_sel", 3),
52 	GATE_MM0(CLK_MM_MDP_RDMA1, "mm_mdp_rdma1", "mm_sel", 4),
53 	GATE_MM0(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "mm_sel", 5),
54 	GATE_MM0(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "mm_sel", 6),
55 	GATE_MM0(CLK_MM_MDP_RSZ2, "mm_mdp_rsz2", "mm_sel", 7),
56 	GATE_MM0(CLK_MM_MDP_TDSHP0, "mm_mdp_tdshp0", "mm_sel", 8),
57 	GATE_MM0(CLK_MM_MDP_TDSHP1, "mm_mdp_tdshp1", "mm_sel", 9),
58 	GATE_MM0(CLK_MM_MDP_WDMA, "mm_mdp_wdma", "mm_sel", 11),
59 	GATE_MM0(CLK_MM_MDP_WROT0, "mm_mdp_wrot0", "mm_sel", 12),
60 	GATE_MM0(CLK_MM_MDP_WROT1, "mm_mdp_wrot1", "mm_sel", 13),
61 	GATE_MM0(CLK_MM_FAKE_ENG, "mm_fake_eng", "mm_sel", 14),
62 	GATE_MM0(CLK_MM_MUTEX_32K, "mm_mutex_32k", "rtc_sel", 15),
63 	GATE_MM0(CLK_MM_DISP_OVL0, "mm_disp_ovl0", "mm_sel", 16),
64 	GATE_MM0(CLK_MM_DISP_OVL1, "mm_disp_ovl1", "mm_sel", 17),
65 	GATE_MM0(CLK_MM_DISP_RDMA0, "mm_disp_rdma0", "mm_sel", 18),
66 	GATE_MM0(CLK_MM_DISP_RDMA1, "mm_disp_rdma1", "mm_sel", 19),
67 	GATE_MM0(CLK_MM_DISP_RDMA2, "mm_disp_rdma2", "mm_sel", 20),
68 	GATE_MM0(CLK_MM_DISP_WDMA0, "mm_disp_wdma0", "mm_sel", 21),
69 	GATE_MM0(CLK_MM_DISP_WDMA1, "mm_disp_wdma1", "mm_sel", 22),
70 	GATE_MM0(CLK_MM_DISP_COLOR0, "mm_disp_color0", "mm_sel", 23),
71 	GATE_MM0(CLK_MM_DISP_COLOR1, "mm_disp_color1", "mm_sel", 24),
72 	GATE_MM0(CLK_MM_DISP_AAL, "mm_disp_aal", "mm_sel", 25),
73 	GATE_MM0(CLK_MM_DISP_GAMMA, "mm_disp_gamma", "mm_sel", 26),
74 	GATE_MM0(CLK_MM_DISP_UFOE, "mm_disp_ufoe", "mm_sel", 27),
75 	GATE_MM0(CLK_MM_DISP_SPLIT0, "mm_disp_split0", "mm_sel", 28),
76 	GATE_MM0(CLK_MM_DISP_SPLIT1, "mm_disp_split1", "mm_sel", 29),
77 	GATE_MM0(CLK_MM_DISP_MERGE, "mm_disp_merge", "mm_sel", 30),
78 	GATE_MM0(CLK_MM_DISP_OD, "mm_disp_od", "mm_sel", 31),
79 	/* MM1 */
80 	GATE_MM1(CLK_MM_DISP_PWM0MM, "mm_disp_pwm0mm", "mm_sel", 0),
81 	GATE_MM1(CLK_MM_DISP_PWM026M, "mm_disp_pwm026m", "pwm_sel", 1),
82 	GATE_MM1(CLK_MM_DISP_PWM1MM, "mm_disp_pwm1mm", "mm_sel", 2),
83 	GATE_MM1(CLK_MM_DISP_PWM126M, "mm_disp_pwm126m", "pwm_sel", 3),
84 	GATE_MM1(CLK_MM_DSI0_ENGINE, "mm_dsi0_engine", "mm_sel", 4),
85 	GATE_MM1(CLK_MM_DSI0_DIGITAL, "mm_dsi0_digital", "dsi0_dig", 5),
86 	GATE_MM1(CLK_MM_DSI1_ENGINE, "mm_dsi1_engine", "mm_sel", 6),
87 	GATE_MM1(CLK_MM_DSI1_DIGITAL, "mm_dsi1_digital", "dsi1_dig", 7),
88 	GATE_MM1(CLK_MM_DPI_PIXEL, "mm_dpi_pixel", "dpi0_sel", 8),
89 	GATE_MM1(CLK_MM_DPI_ENGINE, "mm_dpi_engine", "mm_sel", 9),
90 	GATE_MM1(CLK_MM_DPI1_PIXEL, "mm_dpi1_pixel", "lvds_pxl", 10),
91 	GATE_MM1(CLK_MM_DPI1_ENGINE, "mm_dpi1_engine", "mm_sel", 11),
92 	GATE_MM1(CLK_MM_HDMI_PIXEL, "mm_hdmi_pixel", "dpi0_sel", 12),
93 	GATE_MM1(CLK_MM_HDMI_PLLCK, "mm_hdmi_pllck", "hdmi_sel", 13),
94 	GATE_MM1(CLK_MM_HDMI_AUDIO, "mm_hdmi_audio", "apll1", 14),
95 	GATE_MM1(CLK_MM_HDMI_SPDIF, "mm_hdmi_spdif", "apll2", 15),
96 	GATE_MM1(CLK_MM_LVDS_PIXEL, "mm_lvds_pixel", "lvds_pxl", 16),
97 	GATE_MM1(CLK_MM_LVDS_CTS, "mm_lvds_cts", "lvds_cts", 17),
98 	GATE_MM1(CLK_MM_SMI_LARB4, "mm_smi_larb4", "mm_sel", 18),
99 	GATE_MM1(CLK_MM_HDMI_HDCP, "mm_hdmi_hdcp", "hdcp_sel", 19),
100 	GATE_MM1(CLK_MM_HDMI_HDCP24M, "mm_hdmi_hdcp24m", "hdcp_24m_sel", 20),
101 };
102 
103 struct clk_mt8173_mm_driver_data {
104 	const struct mtk_gate *gates_clk;
105 	int gates_num;
106 };
107 
108 static const struct clk_mt8173_mm_driver_data mt8173_mmsys_driver_data = {
109 	.gates_clk = mt8173_mm_clks,
110 	.gates_num = ARRAY_SIZE(mt8173_mm_clks),
111 };
112 
113 static int clk_mt8173_mm_probe(struct platform_device *pdev)
114 {
115 	struct device *dev = &pdev->dev;
116 	struct device_node *node = dev->parent->of_node;
117 	const struct clk_mt8173_mm_driver_data *data;
118 	struct clk_hw_onecell_data *clk_data;
119 	int ret;
120 
121 	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
122 	if (!clk_data)
123 		return -ENOMEM;
124 
125 	data = &mt8173_mmsys_driver_data;
126 
127 	ret = mtk_clk_register_gates(&pdev->dev, node, data->gates_clk,
128 				     data->gates_num, clk_data);
129 	if (ret)
130 		return ret;
131 
132 	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
133 	if (ret)
134 		return ret;
135 
136 	return 0;
137 }
138 
139 static int clk_mt8173_mm_remove(struct platform_device *pdev)
140 {
141 	struct device *dev = &pdev->dev;
142 	struct device_node *node = dev->parent->of_node;
143 	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
144 	const struct clk_mt8173_mm_driver_data *data = &mt8173_mmsys_driver_data;
145 
146 	of_clk_del_provider(node);
147 	mtk_clk_unregister_gates(data->gates_clk, data->gates_num, clk_data);
148 	mtk_free_clk_data(clk_data);
149 
150 	return 0;
151 }
152 
153 static struct platform_driver clk_mt8173_mm_drv = {
154 	.driver = {
155 		.name = "clk-mt8173-mm",
156 	},
157 	.probe = clk_mt8173_mm_probe,
158 	.remove = clk_mt8173_mm_remove,
159 };
160 
161 builtin_platform_driver(clk_mt8173_mm_drv);
162 
163 MODULE_DESCRIPTION("MediaTek MT8173 MultiMedia clocks driver");
164 MODULE_LICENSE("GPL");
165