1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2020 MediaTek Inc.
4  * Copyright (c) 2020 BayLibre, SAS
5  * Author: James Liao <jamesjj.liao@mediatek.com>
6  *         Fabien Parent <fparent@baylibre.com>
7  */
8 
9 #include <linux/clk-provider.h>
10 #include <linux/of.h>
11 #include <linux/of_address.h>
12 #include <linux/of_device.h>
13 #include <linux/platform_device.h>
14 
15 #include "clk-mtk.h"
16 #include "clk-gate.h"
17 
18 #include <dt-bindings/clock/mt8167-clk.h>
19 
20 static const struct mtk_gate_regs mm0_cg_regs = {
21 	.set_ofs = 0x104,
22 	.clr_ofs = 0x108,
23 	.sta_ofs = 0x100,
24 };
25 
26 static const struct mtk_gate_regs mm1_cg_regs = {
27 	.set_ofs = 0x114,
28 	.clr_ofs = 0x118,
29 	.sta_ofs = 0x110,
30 };
31 
32 #define GATE_MM0(_id, _name, _parent, _shift) {		\
33 		.id = _id,				\
34 		.name = _name,				\
35 		.parent_name = _parent,			\
36 		.regs = &mm0_cg_regs,			\
37 		.shift = _shift,			\
38 		.ops = &mtk_clk_gate_ops_setclr,	\
39 	}
40 
41 #define GATE_MM1(_id, _name, _parent, _shift) {		\
42 		.id = _id,				\
43 		.name = _name,				\
44 		.parent_name = _parent,			\
45 		.regs = &mm1_cg_regs,			\
46 		.shift = _shift,			\
47 		.ops = &mtk_clk_gate_ops_setclr,	\
48 	}
49 
50 static const struct mtk_gate mm_clks[] = {
51 	/* MM0 */
52 	GATE_MM0(CLK_MM_SMI_COMMON, "mm_smi_common", "smi_mm", 0),
53 	GATE_MM0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "smi_mm", 1),
54 	GATE_MM0(CLK_MM_CAM_MDP, "mm_cam_mdp", "smi_mm", 2),
55 	GATE_MM0(CLK_MM_MDP_RDMA, "mm_mdp_rdma", "smi_mm", 3),
56 	GATE_MM0(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "smi_mm", 4),
57 	GATE_MM0(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "smi_mm", 5),
58 	GATE_MM0(CLK_MM_MDP_TDSHP, "mm_mdp_tdshp", "smi_mm", 6),
59 	GATE_MM0(CLK_MM_MDP_WDMA, "mm_mdp_wdma", "smi_mm", 7),
60 	GATE_MM0(CLK_MM_MDP_WROT, "mm_mdp_wrot", "smi_mm", 8),
61 	GATE_MM0(CLK_MM_FAKE_ENG, "mm_fake_eng", "smi_mm", 9),
62 	GATE_MM0(CLK_MM_DISP_OVL0, "mm_disp_ovl0", "smi_mm", 10),
63 	GATE_MM0(CLK_MM_DISP_RDMA0, "mm_disp_rdma0", "smi_mm", 11),
64 	GATE_MM0(CLK_MM_DISP_RDMA1, "mm_disp_rdma1", "smi_mm", 12),
65 	GATE_MM0(CLK_MM_DISP_WDMA, "mm_disp_wdma", "smi_mm", 13),
66 	GATE_MM0(CLK_MM_DISP_COLOR, "mm_disp_color", "smi_mm", 14),
67 	GATE_MM0(CLK_MM_DISP_CCORR, "mm_disp_ccorr", "smi_mm", 15),
68 	GATE_MM0(CLK_MM_DISP_AAL, "mm_disp_aal", "smi_mm", 16),
69 	GATE_MM0(CLK_MM_DISP_GAMMA, "mm_disp_gamma", "smi_mm", 17),
70 	GATE_MM0(CLK_MM_DISP_DITHER, "mm_disp_dither", "smi_mm", 18),
71 	GATE_MM0(CLK_MM_DISP_UFOE, "mm_disp_ufoe", "smi_mm", 19),
72 	/* MM1 */
73 	GATE_MM1(CLK_MM_DISP_PWM_MM, "mm_disp_pwm_mm", "smi_mm", 0),
74 	GATE_MM1(CLK_MM_DISP_PWM_26M, "mm_disp_pwm_26m", "smi_mm", 1),
75 	GATE_MM1(CLK_MM_DSI_ENGINE, "mm_dsi_engine", "smi_mm", 2),
76 	GATE_MM1(CLK_MM_DSI_DIGITAL, "mm_dsi_digital", "dsi0_lntc_dsick", 3),
77 	GATE_MM1(CLK_MM_DPI0_ENGINE, "mm_dpi0_engine", "smi_mm", 4),
78 	GATE_MM1(CLK_MM_DPI0_PXL, "mm_dpi0_pxl", "rg_fdpi0", 5),
79 	GATE_MM1(CLK_MM_LVDS_PXL, "mm_lvds_pxl", "vpll_dpix", 14),
80 	GATE_MM1(CLK_MM_LVDS_CTS, "mm_lvds_cts", "lvdstx_dig_cts", 15),
81 	GATE_MM1(CLK_MM_DPI1_ENGINE, "mm_dpi1_engine", "smi_mm", 16),
82 	GATE_MM1(CLK_MM_DPI1_PXL, "mm_dpi1_pxl", "rg_fdpi1", 17),
83 	GATE_MM1(CLK_MM_HDMI_PXL, "mm_hdmi_pxl", "rg_fdpi1", 18),
84 	GATE_MM1(CLK_MM_HDMI_SPDIF, "mm_hdmi_spdif", "apll12_div6", 19),
85 	GATE_MM1(CLK_MM_HDMI_ADSP_BCK, "mm_hdmi_adsp_b", "apll12_div4b", 20),
86 	GATE_MM1(CLK_MM_HDMI_PLL, "mm_hdmi_pll", "hdmtx_dig_cts", 21),
87 };
88 
89 struct clk_mt8167_mm_driver_data {
90 	const struct mtk_gate *gates_clk;
91 	int gates_num;
92 };
93 
94 static const struct clk_mt8167_mm_driver_data mt8167_mmsys_driver_data = {
95 	.gates_clk = mm_clks,
96 	.gates_num = ARRAY_SIZE(mm_clks),
97 };
98 
99 static int clk_mt8167_mm_probe(struct platform_device *pdev)
100 {
101 	struct device *dev = &pdev->dev;
102 	struct device_node *node = dev->parent->of_node;
103 	const struct clk_mt8167_mm_driver_data *data;
104 	struct clk_hw_onecell_data *clk_data;
105 	int ret;
106 
107 	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
108 	if (!clk_data)
109 		return -ENOMEM;
110 
111 	data = &mt8167_mmsys_driver_data;
112 
113 	ret = mtk_clk_register_gates(&pdev->dev, node, data->gates_clk,
114 				     data->gates_num, clk_data);
115 	if (ret)
116 		return ret;
117 
118 	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
119 	if (ret)
120 		return ret;
121 
122 	return 0;
123 }
124 
125 static struct platform_driver clk_mt8173_mm_drv = {
126 	.driver = {
127 		.name = "clk-mt8167-mm",
128 	},
129 	.probe = clk_mt8167_mm_probe,
130 };
131 
132 builtin_platform_driver(clk_mt8173_mm_drv);
133