GNU Linux-libre 4.19.286-gnu1
[releases.git] / drivers / clk / mediatek / clk-mt2712-venc.c
1 /*
2  * Copyright (c) 2017 MediaTek Inc.
3  * Author: Weiyi Lu <weiyi.lu@mediatek.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  */
14
15 #include <linux/clk-provider.h>
16 #include <linux/platform_device.h>
17
18 #include "clk-mtk.h"
19 #include "clk-gate.h"
20
21 #include <dt-bindings/clock/mt2712-clk.h>
22
23 static const struct mtk_gate_regs venc_cg_regs = {
24         .set_ofs = 0x4,
25         .clr_ofs = 0x8,
26         .sta_ofs = 0x0,
27 };
28
29 #define GATE_VENC(_id, _name, _parent, _shift) {        \
30                 .id = _id,                              \
31                 .name = _name,                          \
32                 .parent_name = _parent,                 \
33                 .regs = &venc_cg_regs,                  \
34                 .shift = _shift,                        \
35                 .ops = &mtk_clk_gate_ops_setclr_inv,    \
36         }
37
38 static const struct mtk_gate venc_clks[] = {
39         GATE_VENC(CLK_VENC_SMI_COMMON_CON, "venc_smi", "mm_sel", 0),
40         GATE_VENC(CLK_VENC_VENC, "venc_venc", "venc_sel", 4),
41         GATE_VENC(CLK_VENC_SMI_LARB6, "venc_smi_larb6", "jpgdec_sel", 12),
42 };
43
44 static int clk_mt2712_venc_probe(struct platform_device *pdev)
45 {
46         struct clk_onecell_data *clk_data;
47         int r;
48         struct device_node *node = pdev->dev.of_node;
49
50         clk_data = mtk_alloc_clk_data(CLK_VENC_NR_CLK);
51
52         mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
53                         clk_data);
54
55         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
56
57         if (r != 0)
58                 pr_err("%s(): could not register clock provider: %d\n",
59                         __func__, r);
60
61         return r;
62 }
63
64 static const struct of_device_id of_match_clk_mt2712_venc[] = {
65         { .compatible = "mediatek,mt2712-vencsys", },
66         {}
67 };
68
69 static struct platform_driver clk_mt2712_venc_drv = {
70         .probe = clk_mt2712_venc_probe,
71         .driver = {
72                 .name = "clk-mt2712-venc",
73                 .of_match_table = of_match_clk_mt2712_venc,
74         },
75 };
76
77 builtin_platform_driver(clk_mt2712_venc_drv);