drivers/clk/mediatek/clk-mt8183-ipu0.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2018 MediaTek Inc.
   4 // Author: Weiyi Lu <weiyi.lu@mediatek.com>
   5
   6 #include <linux/clk-provider.h>
   7 #include <linux/platform_device.h>
   8
   9 #include "clk-mtk.h"
  10 #include "clk-gate.h"
  11
  12 #include <dt-bindings/clock/mt8183-clk.h>
  13
  14 static const struct mtk_gate_regs ipu_core0_cg_regs = {
  15         .set_ofs = 0x4,
  16         .clr_ofs = 0x8,
  17         .sta_ofs = 0x0,
  18 };
  19
  20 #define GATE_IPU_CORE0(_id, _name, _parent, _shift)                     \
  21         GATE_MTK(_id, _name, _parent, &ipu_core0_cg_regs, _shift,       \
  22                 &mtk_clk_gate_ops_setclr)
  23
  24 static const struct mtk_gate ipu_core0_clks[] = {
  25         GATE_IPU_CORE0(CLK_IPU_CORE0_JTAG, "ipu_core0_jtag", "dsp_sel", 0),
  26         GATE_IPU_CORE0(CLK_IPU_CORE0_AXI, "ipu_core0_axi", "dsp_sel", 1),
  27         GATE_IPU_CORE0(CLK_IPU_CORE0_IPU, "ipu_core0_ipu", "dsp_sel", 2),
  28 };
  29
  30 static int clk_mt8183_ipu_core0_probe(struct platform_device *pdev)
  31 {
  32         struct clk_onecell_data *clk_data;
  33         struct device_node *node = pdev->dev.of_node;
  34
  35         clk_data = mtk_alloc_clk_data(CLK_IPU_CORE0_NR_CLK);
  36
  37         mtk_clk_register_gates(node, ipu_core0_clks, ARRAY_SIZE(ipu_core0_clks),
  38                         clk_data);
  39
  40         return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  41 }
  42
  43 static const struct of_device_id of_match_clk_mt8183_ipu_core0[] = {
  44         { .compatible = "mediatek,mt8183-ipu_core0", },
  45         {}
  46 };
  47
  48 static struct platform_driver clk_mt8183_ipu_core0_drv = {
  49         .probe = clk_mt8183_ipu_core0_probe,
  50         .driver = {
  51                 .name = "clk-mt8183-ipu_core0",
  52                 .of_match_table = of_match_clk_mt8183_ipu_core0,
  53         },
  54 };
  55
  56 builtin_platform_driver(clk_mt8183_ipu_core0_drv);