drivers/clk/mediatek/clk-mt6779-img.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 img_cg_regs = {
  15         .set_ofs = 0x0004,
  16         .clr_ofs = 0x0008,
  17         .sta_ofs = 0x0000,
  18 };
  19
  20 #define GATE_IMG(_id, _name, _parent, _shift)                   \
  21         GATE_MTK(_id, _name, _parent, &img_cg_regs, _shift,     \
  22                 &mtk_clk_gate_ops_setclr)
  23
  24 static const struct mtk_gate img_clks[] = {
  25         GATE_IMG(CLK_IMG_LARB5, "imgsys_larb5", "img_sel", 0),
  26         GATE_IMG(CLK_IMG_LARB6, "imgsys_larb6", "img_sel", 1),
  27         GATE_IMG(CLK_IMG_DIP, "imgsys_dip", "img_sel", 2),
  28         GATE_IMG(CLK_IMG_MFB, "imgsys_mfb", "img_sel", 6),
  29         GATE_IMG(CLK_IMG_WPE_A, "imgsys_wpe_a", "img_sel", 7),
  30 };
  31
  32 static const struct of_device_id of_match_clk_mt6779_img[] = {
  33         { .compatible = "mediatek,mt6779-imgsys", },
  34         {}
  35 };
  36
  37 static int clk_mt6779_img_probe(struct platform_device *pdev)
  38 {
  39         struct clk_onecell_data *clk_data;
  40         struct device_node *node = pdev->dev.of_node;
  41
  42         clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
  43
  44         mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
  45                                clk_data);
  46
  47         return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  48 }
  49
  50 static struct platform_driver clk_mt6779_img_drv = {
  51         .probe = clk_mt6779_img_probe,
  52         .driver = {
  53                 .name = "clk-mt6779-img",
  54                 .of_match_table = of_match_clk_mt6779_img,
  55         },
  56 };
  57
  58 builtin_platform_driver(clk_mt6779_img_drv);