LXR linux/drivers/clk/mediatek/clk-mt2712-venc.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
  15static const struct mtk_gate_regs venc_cg_regs = {
  16        .set_ofs = 0x4,
  17        .clr_ofs = 0x8,
  18        .sta_ofs = 0x0,
  19};
  20
  21#define GATE_VENC(_id, _name, _parent, _shift) {        \
  22                .id = _id,                              \
  23                .name = _name,                          \
  24                .parent_name = _parent,                 \
  25                .regs = &venc_cg_regs,                  \
  26                .shift = _shift,                        \
  27                .ops = &mtk_clk_gate_ops_setclr_inv,    \
  28        }
  29
  30static const struct mtk_gate venc_clks[] = {
  31        GATE_VENC(CLK_VENC_SMI_COMMON_CON, "venc_smi", "mm_sel", 0),
  32        GATE_VENC(CLK_VENC_VENC, "venc_venc", "venc_sel", 4),
  33        GATE_VENC(CLK_VENC_SMI_LARB6, "venc_smi_larb6", "jpgdec_sel", 12),
  34};
  35
  36static int clk_mt2712_venc_probe(struct platform_device *pdev)
  37{
  38        struct clk_onecell_data *clk_data;
  39        int r;
  40        struct device_node *node = pdev->dev.of_node;
  41
  42        clk_data = mtk_alloc_clk_data(CLK_VENC_NR_CLK);
  43
  44        mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
  45                        clk_data);
  46
  47        r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  48
  49        if (r != 0)
  50                pr_err("%s(): could not register clock provider: %d\n",
  51                        __func__, r);
  52
  53        return r;
  54}
  55
  56static const struct of_device_id of_match_clk_mt2712_venc[] = {
  57        { .compatible = "mediatek,mt2712-vencsys", },
  58        {}
  59};
  60
  61static struct platform_driver clk_mt2712_venc_drv = {
  62        .probe = clk_mt2712_venc_probe,
  63        .driver = {
  64                .name = "clk-mt2712-venc",
  65                .of_match_table = of_match_clk_mt2712_venc,
  66        },
  67};
  68
  69builtin_platform_driver(clk_mt2712_venc_drv);
  70