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
  15 static 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
  30 static 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
  36 static 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
  56 static const struct of_device_id of_match_clk_mt2712_venc[] = {
  57         { .compatible = "mediatek,mt2712-vencsys", },
  58         {}
  59 };
  60
  61 static 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
  69 builtin_platform_driver(clk_mt2712_venc_drv);