drivers/clk/mediatek/clk-mt6779-ipe.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2019 MediaTek Inc.
   4  * Author: Wendell Lin <wendell.lin@mediatek.com>
   5  */
   6
   7 #include <linux/clk-provider.h>
   8 #include <linux/platform_device.h>
   9 #include <dt-bindings/clock/mt6779-clk.h>
  10
  11 #include "clk-mtk.h"
  12 #include "clk-gate.h"
  13
  14 static const struct mtk_gate_regs ipe_cg_regs = {
  15         .set_ofs = 0x0004,
  16         .clr_ofs = 0x0008,
  17         .sta_ofs = 0x0000,
  18 };
  19
  20 #define GATE_IPE(_id, _name, _parent, _shift)                   \
  21         GATE_MTK(_id, _name, _parent, &ipe_cg_regs, _shift,     \
  22                 &mtk_clk_gate_ops_setclr)
  23
  24 static const struct mtk_gate ipe_clks[] = {
  25         GATE_IPE(CLK_IPE_LARB7, "ipe_larb7", "ipe_sel", 0),
  26         GATE_IPE(CLK_IPE_LARB8, "ipe_larb8", "ipe_sel", 1),
  27         GATE_IPE(CLK_IPE_SMI_SUBCOM, "ipe_smi_subcom", "ipe_sel", 2),
  28         GATE_IPE(CLK_IPE_FD, "ipe_fd", "ipe_sel", 3),
  29         GATE_IPE(CLK_IPE_FE, "ipe_fe", "ipe_sel", 4),
  30         GATE_IPE(CLK_IPE_RSC, "ipe_rsc", "ipe_sel", 5),
  31         GATE_IPE(CLK_IPE_DPE, "ipe_dpe", "ipe_sel", 6),
  32 };
  33
  34 static const struct of_device_id of_match_clk_mt6779_ipe[] = {
  35         { .compatible = "mediatek,mt6779-ipesys", },
  36         {}
  37 };
  38
  39 static int clk_mt6779_ipe_probe(struct platform_device *pdev)
  40 {
  41         struct clk_onecell_data *clk_data;
  42         struct device_node *node = pdev->dev.of_node;
  43
  44         clk_data = mtk_alloc_clk_data(CLK_IPE_NR_CLK);
  45
  46         mtk_clk_register_gates(node, ipe_clks, ARRAY_SIZE(ipe_clks),
  47                                clk_data);
  48
  49         return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  50 }
  51
  52 static struct platform_driver clk_mt6779_ipe_drv = {
  53         .probe = clk_mt6779_ipe_probe,
  54         .driver = {
  55                 .name = "clk-mt6779-ipe",
  56                 .of_match_table = of_match_clk_mt6779_ipe,
  57         },
  58 };
  59
  60 builtin_platform_driver(clk_mt6779_ipe_drv);