drivers/clk/mediatek/clk-mt8195-ccu.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // Copyright (c) 2021 MediaTek Inc.
   4 // Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
   5
   6 #include "clk-gate.h"
   7 #include "clk-mtk.h"
   8
   9 #include <dt-bindings/clock/mt8195-clk.h>
  10 #include <linux/clk-provider.h>
  11 #include <linux/platform_device.h>
  12
  13 static const struct mtk_gate_regs ccu_cg_regs = {
  14         .set_ofs = 0x4,
  15         .clr_ofs = 0x8,
  16         .sta_ofs = 0x0,
  17 };
  18
  19 #define GATE_CCU(_id, _name, _parent, _shift)                   \
  20         GATE_MTK(_id, _name, _parent, &ccu_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
  21
  22 static const struct mtk_gate ccu_clks[] = {
  23         GATE_CCU(CLK_CCU_LARB18, "ccu_larb18", "top_ccu", 0),
  24         GATE_CCU(CLK_CCU_AHB, "ccu_ahb", "top_ccu", 1),
  25         GATE_CCU(CLK_CCU_CCU0, "ccu_ccu0", "top_ccu", 2),
  26         GATE_CCU(CLK_CCU_CCU1, "ccu_ccu1", "top_ccu", 3),
  27 };
  28
  29 static const struct mtk_clk_desc ccu_desc = {
  30         .clks = ccu_clks,
  31         .num_clks = ARRAY_SIZE(ccu_clks),
  32 };
  33
  34 static const struct of_device_id of_match_clk_mt8195_ccu[] = {
  35         {
  36                 .compatible = "mediatek,mt8195-ccusys",
  37                 .data = &ccu_desc,
  38         }, {
  39                 /* sentinel */
  40         }
  41 };
  42 MODULE_DEVICE_TABLE(of, of_match_clk_mt8195_ccu);
  43
  44 static struct platform_driver clk_mt8195_ccu_drv = {
  45         .probe = mtk_clk_simple_probe,
  46         .remove = mtk_clk_simple_remove,
  47         .driver = {
  48                 .name = "clk-mt8195-ccu",
  49                 .of_match_table = of_match_clk_mt8195_ccu,
  50         },
  51 };
  52 module_platform_driver(clk_mt8195_ccu_drv);
  53
  54 MODULE_DESCRIPTION("MediaTek MT8195 Camera Control Unit clocks driver");
  55 MODULE_LICENSE("GPL");