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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2017 MediaTek Inc.
   4  * Author: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
  14
  15 static const struct mtk_gate_regs mfg_cg_regs = {
  16         .set_ofs = 0x4,
  17         .clr_ofs = 0x8,
  18         .sta_ofs = 0x0,
  19 };
  20
  21 #define GATE_MFG(_id, _name, _parent, _shift) { \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &mfg_cg_regs,                   \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_setclr,        \
  28         }
  29
  30 static const struct mtk_gate mfg_clks[] = {
  31         GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "mfg_sel", 0),
  32 };
  33
  34 static int clk_mt2712_mfg_probe(struct platform_device *pdev)
  35 {
  36         struct clk_onecell_data *clk_data;
  37         int r;
  38         struct device_node *node = pdev->dev.of_node;
  39
  40         clk_data = mtk_alloc_clk_data(CLK_MFG_NR_CLK);
  41
  42         mtk_clk_register_gates(node, mfg_clks, ARRAY_SIZE(mfg_clks),
  43                         clk_data);
  44
  45         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  46
  47         if (r != 0)
  48                 pr_err("%s(): could not register clock provider: %d\n",
  49                         __func__, r);
  50
  51         return r;
  52 }
  53
  54 static const struct of_device_id of_match_clk_mt2712_mfg[] = {
  55         { .compatible = "mediatek,mt2712-mfgcfg", },
  56         {}
  57 };
  58
  59 static struct platform_driver clk_mt2712_mfg_drv = {
  60         .probe = clk_mt2712_mfg_probe,
  61         .driver = {
  62                 .name = "clk-mt2712-mfg",
  63                 .of_match_table = of_match_clk_mt2712_mfg,
  64         },
  65 };
  66
  67 builtin_platform_driver(clk_mt2712_mfg_drv);