LXR linux/drivers/clk/mediatek/clk-mt6797-img.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/* Copyright (c) 2017 MediaTek Inc.
   3 * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
   4 */
   5
   6#include <linux/clk-provider.h>
   7#include <linux/platform_device.h>
   8#include <dt-bindings/clock/mt6797-clk.h>
   9
  10#include "clk-mtk.h"
  11#include "clk-gate.h"
  12
  13static const struct mtk_gate_regs img_cg_regs = {
  14        .set_ofs = 0x0004,
  15        .clr_ofs = 0x0008,
  16        .sta_ofs = 0x0000,
  17};
  18
  19#define GATE_IMG(_id, _name, _parent, _shift) {         \
  20                .id = _id,                              \
  21                .name = _name,                          \
  22                .parent_name = _parent,                 \
  23                .regs = &img_cg_regs,                   \
  24                .shift = _shift,                        \
  25                .ops = &mtk_clk_gate_ops_setclr,        \
  26        }
  27
  28static const struct mtk_gate img_clks[] = {
  29        GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_sel", 11),
  30        GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_sel", 10),
  31        GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_sel", 6),
  32        GATE_IMG(CLK_IMG_LARB6, "img_larb6", "mm_sel", 0),
  33};
  34
  35static const struct of_device_id of_match_clk_mt6797_img[] = {
  36        { .compatible = "mediatek,mt6797-imgsys", },
  37        {}
  38};
  39
  40static int clk_mt6797_img_probe(struct platform_device *pdev)
  41{
  42        struct clk_onecell_data *clk_data;
  43        int r;
  44        struct device_node *node = pdev->dev.of_node;
  45
  46        clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
  47
  48        mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
  49                               clk_data);
  50
  51        r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  52        if (r)
  53                dev_err(&pdev->dev,
  54                        "could not register clock provider: %s: %d\n",
  55                        pdev->name, r);
  56
  57        return r;
  58}
  59
  60static struct platform_driver clk_mt6797_img_drv = {
  61        .probe = clk_mt6797_img_probe,
  62        .driver = {
  63                .name = "clk-mt6797-img",
  64                .of_match_table = of_match_clk_mt6797_img,
  65        },
  66};
  67
  68builtin_platform_driver(clk_mt6797_img_drv);
  69