drivers/clk/mediatek/clk-mt6765-img.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2018 MediaTek Inc.
   4  * Author: Owen Chen <owen.chen@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/mt6765-clk.h>
  14
  15 static const struct mtk_gate_regs img_cg_regs = {
  16         .set_ofs = 0x4,
  17         .clr_ofs = 0x8,
  18         .sta_ofs = 0x0,
  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_LARB2, "img_larb2", "mm_ck", 0),
  32         GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_ck", 2),
  33         GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_ck", 3),
  34         GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_ck", 4),
  35         GATE_IMG(CLK_IMG_RSC, "img_rsc", "mm_ck", 5),
  36 };
  37
  38 static int clk_mt6765_img_probe(struct platform_device *pdev)
  39 {
  40         struct clk_onecell_data *clk_data;
  41         int r;
  42         struct device_node *node = pdev->dev.of_node;
  43
  44         clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
  45
  46         mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), clk_data);
  47
  48         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  49
  50         if (r)
  51                 pr_err("%s(): could not register clock provider: %d\n",
  52                        __func__, r);
  53
  54         return r;
  55 }
  56
  57 static const struct of_device_id of_match_clk_mt6765_img[] = {
  58         { .compatible = "mediatek,mt6765-imgsys", },
  59         {}
  60 };
  61
  62 static struct platform_driver clk_mt6765_img_drv = {
  63         .probe = clk_mt6765_img_probe,
  64         .driver = {
  65                 .name = "clk-mt6765-img",
  66                 .of_match_table = of_match_clk_mt6765_img,
  67         },
  68 };
  69
  70 builtin_platform_driver(clk_mt6765_img_drv);