drivers/clk/mediatek/clk-mt2701-img.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2014 MediaTek Inc.
   4  * Author: Shunli Wang <shunli.wang@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/mt2701-clk.h>
  14
  15 static const struct mtk_gate_regs img_cg_regs = {
  16         .set_ofs = 0x0004,
  17         .clr_ofs = 0x0008,
  18         .sta_ofs = 0x0000,
  19 };
  20
  21 #define GATE_IMG(_id, _name, _parent, _shift) {         \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &img_cg_regs,                   \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_setclr,        \
  28         }
  29
  30 static const struct mtk_gate img_clks[] = {
  31         GATE_IMG(CLK_IMG_SMI_COMM, "img_smi_comm", "mm_sel", 0),
  32         GATE_IMG(CLK_IMG_RESZ, "img_resz", "mm_sel", 1),
  33         GATE_IMG(CLK_IMG_JPGDEC_SMI, "img_jpgdec_smi", "mm_sel", 5),
  34         GATE_IMG(CLK_IMG_JPGDEC, "img_jpgdec", "mm_sel", 6),
  35         GATE_IMG(CLK_IMG_VENC_LT, "img_venc_lt", "mm_sel", 8),
  36         GATE_IMG(CLK_IMG_VENC, "img_venc", "mm_sel", 9),
  37 };
  38
  39 static const struct of_device_id of_match_clk_mt2701_img[] = {
  40         { .compatible = "mediatek,mt2701-imgsys", },
  41         {}
  42 };
  43
  44 static int clk_mt2701_img_probe(struct platform_device *pdev)
  45 {
  46         struct clk_onecell_data *clk_data;
  47         int r;
  48         struct device_node *node = pdev->dev.of_node;
  49
  50         clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
  51
  52         mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
  53                                                 clk_data);
  54
  55         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  56         if (r)
  57                 dev_err(&pdev->dev,
  58                         "could not register clock provider: %s: %d\n",
  59                         pdev->name, r);
  60
  61         return r;
  62 }
  63
  64 static struct platform_driver clk_mt2701_img_drv = {
  65         .probe = clk_mt2701_img_probe,
  66         .driver = {
  67                 .name = "clk-mt2701-img",
  68                 .of_match_table = of_match_clk_mt2701_img,
  69         },
  70 };
  71
  72 builtin_platform_driver(clk_mt2701_img_drv);