clk/mediatek/clk-mt6797-venc.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright (c) 2017 MediaTek Inc.
0004  * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
0005  */
0006
0007 #include <linux/clk-provider.h>
0008 #include <linux/platform_device.h>
0009
0010 #include "clk-mtk.h"
0011 #include "clk-gate.h"
0012
0013 #include <dt-bindings/clock/mt6797-clk.h>
0014
0015 static const struct mtk_gate_regs venc_cg_regs = {
0016     .set_ofs = 0x0004,
0017     .clr_ofs = 0x0008,
0018     .sta_ofs = 0x0000,
0019 };
0020
0021 #define GATE_VENC(_id, _name, _parent, _shift) {    \
0022         .id = _id,              \
0023         .name = _name,              \
0024         .parent_name = _parent,         \
0025         .regs = &venc_cg_regs,          \
0026         .shift = _shift,            \
0027         .ops = &mtk_clk_gate_ops_setclr_inv,    \
0028     }
0029
0030 static const struct mtk_gate venc_clks[] = {
0031     GATE_VENC(CLK_VENC_0, "venc_0", "mm_sel", 0),
0032     GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4),
0033     GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8),
0034     GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12),
0035 };
0036
0037 static const struct of_device_id of_match_clk_mt6797_venc[] = {
0038     { .compatible = "mediatek,mt6797-vencsys", },
0039     {}
0040 };
0041
0042 static int clk_mt6797_venc_probe(struct platform_device *pdev)
0043 {
0044     struct clk_hw_onecell_data *clk_data;
0045     int r;
0046     struct device_node *node = pdev->dev.of_node;
0047
0048     clk_data = mtk_alloc_clk_data(CLK_VENC_NR);
0049
0050     mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
0051                    clk_data);
0052
0053     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0054     if (r)
0055         dev_err(&pdev->dev,
0056             "could not register clock provider: %s: %d\n",
0057             pdev->name, r);
0058
0059     return r;
0060 }
0061
0062 static struct platform_driver clk_mt6797_venc_drv = {
0063     .probe = clk_mt6797_venc_probe,
0064     .driver = {
0065         .name = "clk-mt6797-venc",
0066         .of_match_table = of_match_clk_mt6797_venc,
0067     },
0068 };
0069
0070 builtin_platform_driver(clk_mt6797_venc_drv);