1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2017 MediaTek Inc.
4 * Author: Weiyi Lu <weiyi.lu@mediatek.com>
5 */
6
7 #include <linux/clk-provider.h>
8 #include <linux/platform_device.h>
9
10 #include "clk-mtk.h"
11 #include "clk-gate.h"
12
13 #include <dt-bindings/clock/mt2712-clk.h>
14
15 static const struct mtk_gate_regs vdec0_cg_regs = {
16 .set_ofs = 0x0,
17 .clr_ofs = 0x4,
18 .sta_ofs = 0x0,
19 };
20
21 static const struct mtk_gate_regs vdec1_cg_regs = {
22 .set_ofs = 0x8,
23 .clr_ofs = 0xc,
24 .sta_ofs = 0x8,
25 };
26
27 #define GATE_VDEC0(_id, _name, _parent, _shift) { \
28 .id = _id, \
29 .name = _name, \
30 .parent_name = _parent, \
31 .regs = &vdec0_cg_regs, \
32 .shift = _shift, \
33 .ops = &mtk_clk_gate_ops_setclr_inv, \
34 }
35
36 #define GATE_VDEC1(_id, _name, _parent, _shift) { \
37 .id = _id, \
38 .name = _name, \
39 .parent_name = _parent, \
40 .regs = &vdec1_cg_regs, \
41 .shift = _shift, \
42 .ops = &mtk_clk_gate_ops_setclr_inv, \
43 }
44
45 static const struct mtk_gate vdec_clks[] = {
46 /* VDEC0 */
47 GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
48 /* VDEC1 */
49 GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "vdec_sel", 0),
50 GATE_VDEC1(CLK_VDEC_IMGRZ_CKEN, "vdec_imgrz_cken", "vdec_sel", 1),
51 };
52
clk_mt2712_vdec_probe(struct platform_device * pdev)53 static int clk_mt2712_vdec_probe(struct platform_device *pdev)
54 {
55 struct clk_onecell_data *clk_data;
56 int r;
57 struct device_node *node = pdev->dev.of_node;
58
59 clk_data = mtk_alloc_clk_data(CLK_VDEC_NR_CLK);
60
61 mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
62 clk_data);
63
64 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
65
66 if (r != 0)
67 pr_err("%s(): could not register clock provider: %d\n",
68 __func__, r);
69
70 return r;
71 }
72
73 static const struct of_device_id of_match_clk_mt2712_vdec[] = {
74 { .compatible = "mediatek,mt2712-vdecsys", },
75 {}
76 };
77
78 static struct platform_driver clk_mt2712_vdec_drv = {
79 .probe = clk_mt2712_vdec_probe,
80 .driver = {
81 .name = "clk-mt2712-vdec",
82 .of_match_table = of_match_clk_mt2712_vdec,
83 },
84 };
85
86 builtin_platform_driver(clk_mt2712_vdec_drv);
87