LXR linux/drivers/clk/mediatek/clk-mt2712-mfg.c

   1/*
   2 * Copyright (c) 2017 MediaTek Inc.
   3 * Author: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
  22
  23static const struct mtk_gate_regs mfg_cg_regs = {
  24        .set_ofs = 0x4,
  25        .clr_ofs = 0x8,
  26        .sta_ofs = 0x0,
  27};
  28
  29#define GATE_MFG(_id, _name, _parent, _shift) { \
  30                .id = _id,                              \
  31                .name = _name,                          \
  32                .parent_name = _parent,                 \
  33                .regs = &mfg_cg_regs,                   \
  34                .shift = _shift,                        \
  35                .ops = &mtk_clk_gate_ops_setclr,        \
  36        }
  37
  38static const struct mtk_gate mfg_clks[] = {
  39        GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "mfg_sel", 0),
  40};
  41
  42static int clk_mt2712_mfg_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_MFG_NR_CLK);
  49
  50        mtk_clk_register_gates(node, mfg_clks, ARRAY_SIZE(mfg_clks),
  51                        clk_data);
  52
  53        r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  54
  55        if (r != 0)
  56                pr_err("%s(): could not register clock provider: %d\n",
  57                        __func__, r);
  58
  59        return r;
  60}
  61
  62static const struct of_device_id of_match_clk_mt2712_mfg[] = {
  63        { .compatible = "mediatek,mt2712-mfgcfg", },
  64        {}
  65};
  66
  67static struct platform_driver clk_mt2712_mfg_drv = {
  68        .probe = clk_mt2712_mfg_probe,
  69        .driver = {
  70                .name = "clk-mt2712-mfg",
  71                .of_match_table = of_match_clk_mt2712_mfg,
  72        },
  73};
  74
  75builtin_platform_driver(clk_mt2712_mfg_drv);
  76