clk/mediatek/clk-mt2712-img.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright (c) 2017 MediaTek Inc.
0004  * Author: Weiyi Lu <weiyi.lu@mediatek.com>
0005  */
0006
0007 #include <linux/clk-provider.h>
0008 #include <linux/platform_device.h>
0009
0010 #include "clk-mtk.h"
0011 #include "clk-gate.h"
0012
0013 #include <dt-bindings/clock/mt2712-clk.h>
0014
0015 static const struct mtk_gate_regs img_cg_regs = {
0016     .set_ofs = 0x0,
0017     .clr_ofs = 0x0,
0018     .sta_ofs = 0x0,
0019 };
0020
0021 #define GATE_IMG(_id, _name, _parent, _shift) { \
0022         .id = _id,              \
0023         .name = _name,              \
0024         .parent_name = _parent,         \
0025         .regs = &img_cg_regs,           \
0026         .shift = _shift,            \
0027         .ops = &mtk_clk_gate_ops_no_setclr, \
0028     }
0029
0030 static const struct mtk_gate img_clks[] = {
0031     GATE_IMG(CLK_IMG_SMI_LARB2, "img_smi_larb2", "mm_sel", 0),
0032     GATE_IMG(CLK_IMG_SENINF_SCAM_EN, "img_scam_en", "csi0", 3),
0033     GATE_IMG(CLK_IMG_SENINF_CAM_EN, "img_cam_en", "mm_sel", 8),
0034     GATE_IMG(CLK_IMG_CAM_SV_EN, "img_cam_sv_en", "mm_sel", 9),
0035     GATE_IMG(CLK_IMG_CAM_SV1_EN, "img_cam_sv1_en", "mm_sel", 10),
0036     GATE_IMG(CLK_IMG_CAM_SV2_EN, "img_cam_sv2_en", "mm_sel", 11),
0037 };
0038
0039 static int clk_mt2712_img_probe(struct platform_device *pdev)
0040 {
0041     struct clk_hw_onecell_data *clk_data;
0042     int r;
0043     struct device_node *node = pdev->dev.of_node;
0044
0045     clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
0046
0047     mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
0048             clk_data);
0049
0050     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0051
0052     if (r != 0)
0053         pr_err("%s(): could not register clock provider: %d\n",
0054             __func__, r);
0055
0056     return r;
0057 }
0058
0059 static const struct of_device_id of_match_clk_mt2712_img[] = {
0060     { .compatible = "mediatek,mt2712-imgsys", },
0061     {}
0062 };
0063
0064 static struct platform_driver clk_mt2712_img_drv = {
0065     .probe = clk_mt2712_img_probe,
0066     .driver = {
0067         .name = "clk-mt2712-img",
0068         .of_match_table = of_match_clk_mt2712_img,
0069     },
0070 };
0071
0072 builtin_platform_driver(clk_mt2712_img_drv);