]> git.karo-electronics.de Git - karo-tx-linux.git/blob - drivers/clk/mediatek/clk-mt6797-venc.c
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[karo-tx-linux.git] / drivers / clk / mediatek / clk-mt6797-venc.c
1 /*
2  * Copyright (c) 2017 MediaTek Inc.
3  * Author: Kevin Chen <kevin-cw.chen@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/mt6797-clk.h>
22
23 static const struct mtk_gate_regs venc_cg_regs = {
24         .set_ofs = 0x0004,
25         .clr_ofs = 0x0008,
26         .sta_ofs = 0x0000,
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_0, "venc_0", "mm_sel", 0),
40         GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4),
41         GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8),
42         GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12),
43 };
44
45 static const struct of_device_id of_match_clk_mt6797_venc[] = {
46         { .compatible = "mediatek,mt6797-vencsys", },
47         {}
48 };
49
50 static int clk_mt6797_venc_probe(struct platform_device *pdev)
51 {
52         struct clk_onecell_data *clk_data;
53         int r;
54         struct device_node *node = pdev->dev.of_node;
55
56         clk_data = mtk_alloc_clk_data(CLK_VENC_NR);
57
58         mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
59                                clk_data);
60
61         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
62         if (r)
63                 dev_err(&pdev->dev,
64                         "could not register clock provider: %s: %d\n",
65                         pdev->name, r);
66
67         return r;
68 }
69
70 static struct platform_driver clk_mt6797_venc_drv = {
71         .probe = clk_mt6797_venc_probe,
72         .driver = {
73                 .name = "clk-mt6797-venc",
74                 .of_match_table = of_match_clk_mt6797_venc,
75         },
76 };
77
78 builtin_platform_driver(clk_mt6797_venc_drv);