drivers/clk/mediatek/clk-mt2712-img.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 img_cg_regs = {
  16         .set_ofs = 0x0,
  17         .clr_ofs = 0x0,
  18         .sta_ofs = 0x0,
  19 };
  20
  21 #define GATE_IMG(_id, _name, _parent, _shift) { \
  22                 .id = _id,                              \
  23                 .name = _name,                          \
  24                 .parent_name = _parent,                 \
  25                 .regs = &img_cg_regs,                   \
  26                 .shift = _shift,                        \
  27                 .ops = &mtk_clk_gate_ops_no_setclr,     \
  28         }
  29
  30 static const struct mtk_gate img_clks[] = {
  31         GATE_IMG(CLK_IMG_SMI_LARB2, "img_smi_larb2", "mm_sel", 0),
  32         GATE_IMG(CLK_IMG_SENINF_SCAM_EN, "img_scam_en", "csi0", 3),
  33         GATE_IMG(CLK_IMG_SENINF_CAM_EN, "img_cam_en", "mm_sel", 8),
  34         GATE_IMG(CLK_IMG_CAM_SV_EN, "img_cam_sv_en", "mm_sel", 9),
  35         GATE_IMG(CLK_IMG_CAM_SV1_EN, "img_cam_sv1_en", "mm_sel", 10),
  36         GATE_IMG(CLK_IMG_CAM_SV2_EN, "img_cam_sv2_en", "mm_sel", 11),
  37 };
  38
  39 static int clk_mt2712_img_probe(struct platform_device *pdev)
  40 {
  41         struct clk_onecell_data *clk_data;
  42         int r;
  43         struct device_node *node = pdev->dev.of_node;
  44
  45         clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
  46
  47         mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
  48                         clk_data);
  49
  50         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  51
  52         if (r != 0)
  53                 pr_err("%s(): could not register clock provider: %d\n",
  54                         __func__, r);
  55
  56         return r;
  57 }
  58
  59 static const struct of_device_id of_match_clk_mt2712_img[] = {
  60         { .compatible = "mediatek,mt2712-imgsys", },
  61         {}
  62 };
  63
  64 static struct platform_driver clk_mt2712_img_drv = {
  65         .probe = clk_mt2712_img_probe,
  66         .driver = {
  67                 .name = "clk-mt2712-img",
  68                 .of_match_table = of_match_clk_mt2712_img,
  69         },
  70 };
  71
  72 builtin_platform_driver(clk_mt2712_img_drv);