drivers/clk/mediatek/clk-mt6779-vdec.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
  10 #include "clk-mtk.h"
  11 #include "clk-gate.h"
  12
  13 #include <dt-bindings/clock/mt6779-clk.h>
  14
  15 static const struct mtk_gate_regs vdec0_cg_regs = {
  16         .set_ofs = 0x0000,
  17         .clr_ofs = 0x0004,
  18         .sta_ofs = 0x0000,
  19 };
  20
  21 static const struct mtk_gate_regs vdec1_cg_regs = {
  22         .set_ofs = 0x0008,
  23         .clr_ofs = 0x000c,
  24         .sta_ofs = 0x0008,
  25 };
  26
  27 #define GATE_VDEC0_I(_id, _name, _parent, _shift)               \
  28         GATE_MTK(_id, _name, _parent, &vdec0_cg_regs, _shift,   \
  29                 &mtk_clk_gate_ops_setclr_inv)
  30 #define GATE_VDEC1_I(_id, _name, _parent, _shift)               \
  31         GATE_MTK(_id, _name, _parent, &vdec1_cg_regs, _shift,   \
  32                 &mtk_clk_gate_ops_setclr_inv)
  33
  34 static const struct mtk_gate vdec_clks[] = {
  35         /* VDEC0 */
  36         GATE_VDEC0_I(CLK_VDEC_VDEC, "vdec_cken", "vdec_sel", 0),
  37         /* VDEC1 */
  38         GATE_VDEC1_I(CLK_VDEC_LARB1, "vdec_larb1_cken", "vdec_sel", 0),
  39 };
  40
  41 static const struct of_device_id of_match_clk_mt6779_vdec[] = {
  42         { .compatible = "mediatek,mt6779-vdecsys", },
  43         {}
  44 };
  45
  46 static int clk_mt6779_vdec_probe(struct platform_device *pdev)
  47 {
  48         struct clk_onecell_data *clk_data;
  49         struct device_node *node = pdev->dev.of_node;
  50
  51         clk_data = mtk_alloc_clk_data(CLK_VDEC_GCON_NR_CLK);
  52
  53         mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
  54                                clk_data);
  55
  56         return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  57 }
  58
  59 static struct platform_driver clk_mt6779_vdec_drv = {
  60         .probe = clk_mt6779_vdec_probe,
  61         .driver = {
  62                 .name = "clk-mt6779-vdec",
  63                 .of_match_table = of_match_clk_mt6779_vdec,
  64         },
  65 };
  66
  67 builtin_platform_driver(clk_mt6779_vdec_drv);