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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2017 MediaTek Inc.
   4  * Author: Kevin-CW 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 vdec0_cg_regs = {
  16         .set_ofs = 0x0000,
  17         .clr_ofs = 0x0004,
  18         .sta_ofs = 0x0000,
  19 };
  20
  21 static const struct mtk_gate_regs vdec1_cg_regs = {
  22         .set_ofs = 0x0008,
  23         .clr_ofs = 0x000c,
  24         .sta_ofs = 0x0008,
  25 };
  26
  27 #define GATE_VDEC0(_id, _name, _parent, _shift) {               \
  28         .id = _id,                                      \
  29         .name = _name,                                  \
  30         .parent_name = _parent,                         \
  31         .regs = &vdec0_cg_regs,                         \
  32         .shift = _shift,                                \
  33         .ops = &mtk_clk_gate_ops_setclr_inv,            \
  34 }
  35
  36 #define GATE_VDEC1(_id, _name, _parent, _shift) {               \
  37         .id = _id,                                      \
  38         .name = _name,                                  \
  39         .parent_name = _parent,                         \
  40         .regs = &vdec1_cg_regs,                         \
  41         .shift = _shift,                                \
  42         .ops = &mtk_clk_gate_ops_setclr_inv,            \
  43 }
  44
  45 static const struct mtk_gate vdec_clks[] = {
  46         GATE_VDEC0(CLK_VDEC_CKEN_ENG, "vdec_cken_eng", "vdec_sel", 8),
  47         GATE_VDEC0(CLK_VDEC_ACTIVE, "vdec_active", "vdec_sel", 4),
  48         GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
  49         GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "mm_sel", 0),
  50 };
  51
  52 static const struct of_device_id of_match_clk_mt6797_vdec[] = {
  53         { .compatible = "mediatek,mt6797-vdecsys", },
  54         {}
  55 };
  56
  57 static int clk_mt6797_vdec_probe(struct platform_device *pdev)
  58 {
  59         struct clk_onecell_data *clk_data;
  60         int r;
  61         struct device_node *node = pdev->dev.of_node;
  62
  63         clk_data = mtk_alloc_clk_data(CLK_VDEC_NR);
  64
  65         mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
  66                                clk_data);
  67
  68         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  69         if (r)
  70                 dev_err(&pdev->dev,
  71                         "could not register clock provider: %s: %d\n",
  72                         pdev->name, r);
  73
  74         return r;
  75 }
  76
  77 static struct platform_driver clk_mt6797_vdec_drv = {
  78         .probe = clk_mt6797_vdec_probe,
  79         .driver = {
  80                 .name = "clk-mt6797-vdec",
  81                 .of_match_table = of_match_clk_mt6797_vdec,
  82         },
  83 };
  84
  85 builtin_platform_driver(clk_mt6797_vdec_drv);