clk/mediatek/clk-mt6765-cam.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright (c) 2018 MediaTek Inc.
0004  * Author: Owen Chen <owen.chen@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/mt6765-clk.h>
0014
0015 static const struct mtk_gate_regs cam_cg_regs = {
0016     .set_ofs = 0x4,
0017     .clr_ofs = 0x8,
0018     .sta_ofs = 0x0,
0019 };
0020
0021 #define GATE_CAM(_id, _name, _parent, _shift) {     \
0022         .id = _id,              \
0023         .name = _name,              \
0024         .parent_name = _parent,         \
0025         .regs = &cam_cg_regs,           \
0026         .shift = _shift,            \
0027         .ops = &mtk_clk_gate_ops_setclr,    \
0028     }
0029
0030 static const struct mtk_gate cam_clks[] = {
0031     GATE_CAM(CLK_CAM_LARB3, "cam_larb3", "mm_ck", 0),
0032     GATE_CAM(CLK_CAM_DFP_VAD, "cam_dfp_vad", "mm_ck", 1),
0033     GATE_CAM(CLK_CAM, "cam", "mm_ck", 6),
0034     GATE_CAM(CLK_CAMTG, "camtg", "mm_ck", 7),
0035     GATE_CAM(CLK_CAM_SENINF, "cam_seninf", "mm_ck", 8),
0036     GATE_CAM(CLK_CAMSV0, "camsv0", "mm_ck", 9),
0037     GATE_CAM(CLK_CAMSV1, "camsv1", "mm_ck", 10),
0038     GATE_CAM(CLK_CAMSV2, "camsv2", "mm_ck", 11),
0039     GATE_CAM(CLK_CAM_CCU, "cam_ccu", "mm_ck", 12),
0040 };
0041
0042 static int clk_mt6765_cam_probe(struct platform_device *pdev)
0043 {
0044     struct clk_hw_onecell_data *clk_data;
0045     int r;
0046     struct device_node *node = pdev->dev.of_node;
0047
0048     clk_data = mtk_alloc_clk_data(CLK_CAM_NR_CLK);
0049
0050     mtk_clk_register_gates(node, cam_clks, ARRAY_SIZE(cam_clks), clk_data);
0051
0052     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0053
0054     if (r)
0055         pr_err("%s(): could not register clock provider: %d\n",
0056                __func__, r);
0057
0058     return r;
0059 }
0060
0061 static const struct of_device_id of_match_clk_mt6765_cam[] = {
0062     { .compatible = "mediatek,mt6765-camsys", },
0063     {}
0064 };
0065
0066 static struct platform_driver clk_mt6765_cam_drv = {
0067     .probe = clk_mt6765_cam_probe,
0068     .driver = {
0069         .name = "clk-mt6765-cam",
0070         .of_match_table = of_match_clk_mt6765_cam,
0071     },
0072 };
0073
0074 builtin_platform_driver(clk_mt6765_cam_drv);