drivers/clk/mediatek/clk-mt2712-jpgdec.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 jpgdec_cg_regs = {
  16         .set_ofs = 0x4,
  17         .clr_ofs = 0x8,
  18         .sta_ofs = 0x0,
  19 };
  20
  21 #define GATE_JPGDEC(_id, _name, _parent, _shift) {      \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &jpgdec_cg_regs,                        \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_setclr_inv,    \
  28         }
  29
  30 static const struct mtk_gate jpgdec_clks[] = {
  31         GATE_JPGDEC(CLK_JPGDEC_JPGDEC1, "jpgdec_jpgdec1", "jpgdec_sel", 0),
  32         GATE_JPGDEC(CLK_JPGDEC_JPGDEC, "jpgdec_jpgdec", "jpgdec_sel", 4),
  33 };
  34
  35 static int clk_mt2712_jpgdec_probe(struct platform_device *pdev)
  36 {
  37         struct clk_onecell_data *clk_data;
  38         int r;
  39         struct device_node *node = pdev->dev.of_node;
  40
  41         clk_data = mtk_alloc_clk_data(CLK_JPGDEC_NR_CLK);
  42
  43         mtk_clk_register_gates(node, jpgdec_clks, ARRAY_SIZE(jpgdec_clks),
  44                         clk_data);
  45
  46         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  47
  48         if (r != 0)
  49                 pr_err("%s(): could not register clock provider: %d\n",
  50                         __func__, r);
  51
  52         return r;
  53 }
  54
  55 static const struct of_device_id of_match_clk_mt2712_jpgdec[] = {
  56         { .compatible = "mediatek,mt2712-jpgdecsys", },
  57         {}
  58 };
  59
  60 static struct platform_driver clk_mt2712_jpgdec_drv = {
  61         .probe = clk_mt2712_jpgdec_probe,
  62         .driver = {
  63                 .name = "clk-mt2712-jpgdec",
  64                 .of_match_table = of_match_clk_mt2712_jpgdec,
  65         },
  66 };
  67
  68 builtin_platform_driver(clk_mt2712_jpgdec_drv);