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 jpgdec_cg_regs = {
16 .set_ofs = 0x4,
17 .clr_ofs = 0x8,
18 .sta_ofs = 0x0,
19 };
20
21 #define GATE_JPGDEC(_id, _name, _parent, _shift) { \
22 .id = _id, \
23 .name = _name, \
24 .parent_name = _parent, \
25 .regs = &jpgdec_cg_regs, \
26 .shift = _shift, \
27 .ops = &mtk_clk_gate_ops_setclr_inv, \
28 }
29
30 static const struct mtk_gate jpgdec_clks[] = {
31 GATE_JPGDEC(CLK_JPGDEC_JPGDEC1, "jpgdec_jpgdec1", "jpgdec_sel", 0),
32 GATE_JPGDEC(CLK_JPGDEC_JPGDEC, "jpgdec_jpgdec", "jpgdec_sel", 4),
33 };
34
clk_mt2712_jpgdec_probe(struct platform_device * pdev)35 static int clk_mt2712_jpgdec_probe(struct platform_device *pdev)
36 {
37 struct clk_onecell_data *clk_data;
38 int r;
39 struct device_node *node = pdev->dev.of_node;
40
41 clk_data = mtk_alloc_clk_data(CLK_JPGDEC_NR_CLK);
42
43 mtk_clk_register_gates(node, jpgdec_clks, ARRAY_SIZE(jpgdec_clks),
44 clk_data);
45
46 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
47
48 if (r != 0)
49 pr_err("%s(): could not register clock provider: %d\n",
50 __func__, r);
51
52 return r;
53 }
54
55 static const struct of_device_id of_match_clk_mt2712_jpgdec[] = {
56 { .compatible = "mediatek,mt2712-jpgdecsys", },
57 {}
58 };
59
60 static struct platform_driver clk_mt2712_jpgdec_drv = {
61 .probe = clk_mt2712_jpgdec_probe,
62 .driver = {
63 .name = "clk-mt2712-jpgdec",
64 .of_match_table = of_match_clk_mt2712_jpgdec,
65 },
66 };
67
68 builtin_platform_driver(clk_mt2712_jpgdec_drv);
69