LXR linux/drivers/clk/mediatek/clk-mt2701-vdec.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (c) 2014 MediaTek Inc.
   4 * Author: Shunli Wang <shunli.wang@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/mt2701-clk.h>
  14
  15static const struct mtk_gate_regs vdec0_cg_regs = {
  16        .set_ofs = 0x0000,
  17        .clr_ofs = 0x0004,
  18        .sta_ofs = 0x0000,
  19};
  20
  21static 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
  45static const struct mtk_gate vdec_clks[] = {
  46        GATE_VDEC0(CLK_VDEC_CKGEN, "vdec_cken", "vdec_sel", 0),
  47        GATE_VDEC1(CLK_VDEC_LARB, "vdec_larb_cken", "mm_sel", 0),
  48};
  49
  50static const struct of_device_id of_match_clk_mt2701_vdec[] = {
  51        { .compatible = "mediatek,mt2701-vdecsys", },
  52        {}
  53};
  54
  55static int clk_mt2701_vdec_probe(struct platform_device *pdev)
  56{
  57        struct clk_onecell_data *clk_data;
  58        int r;
  59        struct device_node *node = pdev->dev.of_node;
  60
  61        clk_data = mtk_alloc_clk_data(CLK_VDEC_NR);
  62
  63        mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
  64                                                clk_data);
  65
  66        r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  67        if (r)
  68                dev_err(&pdev->dev,
  69                        "could not register clock provider: %s: %d\n",
  70                        pdev->name, r);
  71
  72        return r;
  73}
  74
  75static struct platform_driver clk_mt2701_vdec_drv = {
  76        .probe = clk_mt2701_vdec_probe,
  77        .driver = {
  78                .name = "clk-mt2701-vdec",
  79                .of_match_table = of_match_clk_mt2701_vdec,
  80        },
  81};
  82
  83builtin_platform_driver(clk_mt2701_vdec_drv);
  84