drivers/clk/mediatek/clk-mt6797-venc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2017 MediaTek Inc.
   4  * Author: Kevin Chen <kevin-cw.chen@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/mt6797-clk.h>
  14
  15 static const struct mtk_gate_regs venc_cg_regs = {
  16         .set_ofs = 0x0004,
  17         .clr_ofs = 0x0008,
  18         .sta_ofs = 0x0000,
  19 };
  20
  21 #define GATE_VENC(_id, _name, _parent, _shift) {        \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &venc_cg_regs,                  \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_setclr_inv,    \
  28         }
  29
  30 static const struct mtk_gate venc_clks[] = {
  31         GATE_VENC(CLK_VENC_0, "venc_0", "mm_sel", 0),
  32         GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4),
  33         GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8),
  34         GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12),
  35 };
  36
  37 static const struct of_device_id of_match_clk_mt6797_venc[] = {
  38         { .compatible = "mediatek,mt6797-vencsys", },
  39         {}
  40 };
  41
  42 static int clk_mt6797_venc_probe(struct platform_device *pdev)
  43 {
  44         struct clk_onecell_data *clk_data;
  45         int r;
  46         struct device_node *node = pdev->dev.of_node;
  47
  48         clk_data = mtk_alloc_clk_data(CLK_VENC_NR);
  49
  50         mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
  51                                clk_data);
  52
  53         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  54         if (r)
  55                 dev_err(&pdev->dev,
  56                         "could not register clock provider: %s: %d\n",
  57                         pdev->name, r);
  58
  59         return r;
  60 }
  61
  62 static struct platform_driver clk_mt6797_venc_drv = {
  63         .probe = clk_mt6797_venc_probe,
  64         .driver = {
  65                 .name = "clk-mt6797-venc",
  66                 .of_match_table = of_match_clk_mt6797_venc,
  67         },
  68 };
  69
  70 builtin_platform_driver(clk_mt6797_venc_drv);