drivers/clk/mediatek/clk-mt6765-cam.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2018 MediaTek Inc.
   4  * Author: Owen Chen <owen.chen@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/mt6765-clk.h>
  14
  15 static const struct mtk_gate_regs cam_cg_regs = {
  16         .set_ofs = 0x4,
  17         .clr_ofs = 0x8,
  18         .sta_ofs = 0x0,
  19 };
  20
  21 #define GATE_CAM(_id, _name, _parent, _shift) {         \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &cam_cg_regs,                   \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_setclr,        \
  28         }
  29
  30 static const struct mtk_gate cam_clks[] = {
  31         GATE_CAM(CLK_CAM_LARB3, "cam_larb3", "mm_ck", 0),
  32         GATE_CAM(CLK_CAM_DFP_VAD, "cam_dfp_vad", "mm_ck", 1),
  33         GATE_CAM(CLK_CAM, "cam", "mm_ck", 6),
  34         GATE_CAM(CLK_CAMTG, "camtg", "mm_ck", 7),
  35         GATE_CAM(CLK_CAM_SENINF, "cam_seninf", "mm_ck", 8),
  36         GATE_CAM(CLK_CAMSV0, "camsv0", "mm_ck", 9),
  37         GATE_CAM(CLK_CAMSV1, "camsv1", "mm_ck", 10),
  38         GATE_CAM(CLK_CAMSV2, "camsv2", "mm_ck", 11),
  39         GATE_CAM(CLK_CAM_CCU, "cam_ccu", "mm_ck", 12),
  40 };
  41
  42 static int clk_mt6765_cam_probe(struct platform_device *pdev)
  43 {
  44         struct clk_onecell_data *clk_data;
  45         int r;
  46         struct device_node *node = pdev->dev.of_node;
  47
  48         clk_data = mtk_alloc_clk_data(CLK_CAM_NR_CLK);
  49
  50         mtk_clk_register_gates(node, cam_clks, ARRAY_SIZE(cam_clks), clk_data);
  51
  52         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  53
  54         if (r)
  55                 pr_err("%s(): could not register clock provider: %d\n",
  56                        __func__, r);
  57
  58         return r;
  59 }
  60
  61 static const struct of_device_id of_match_clk_mt6765_cam[] = {
  62         { .compatible = "mediatek,mt6765-camsys", },
  63         {}
  64 };
  65
  66 static struct platform_driver clk_mt6765_cam_drv = {
  67         .probe = clk_mt6765_cam_probe,
  68         .driver = {
  69                 .name = "clk-mt6765-cam",
  70                 .of_match_table = of_match_clk_mt6765_cam,
  71         },
  72 };
  73
  74 builtin_platform_driver(clk_mt6765_cam_drv);