clk/mediatek/clk-mt2701-img.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright (c) 2014 MediaTek Inc.
0004  * Author: Shunli Wang <shunli.wang@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/mt2701-clk.h>
0014
0015 static const struct mtk_gate_regs img_cg_regs = {
0016     .set_ofs = 0x0004,
0017     .clr_ofs = 0x0008,
0018     .sta_ofs = 0x0000,
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_setclr,    \
0028     }
0029
0030 static const struct mtk_gate img_clks[] = {
0031     GATE_IMG(CLK_IMG_SMI_COMM, "img_smi_comm", "mm_sel", 0),
0032     GATE_IMG(CLK_IMG_RESZ, "img_resz", "mm_sel", 1),
0033     GATE_IMG(CLK_IMG_JPGDEC_SMI, "img_jpgdec_smi", "mm_sel", 5),
0034     GATE_IMG(CLK_IMG_JPGDEC, "img_jpgdec", "mm_sel", 6),
0035     GATE_IMG(CLK_IMG_VENC_LT, "img_venc_lt", "mm_sel", 8),
0036     GATE_IMG(CLK_IMG_VENC, "img_venc", "mm_sel", 9),
0037 };
0038
0039 static const struct of_device_id of_match_clk_mt2701_img[] = {
0040     { .compatible = "mediatek,mt2701-imgsys", },
0041     {}
0042 };
0043
0044 static int clk_mt2701_img_probe(struct platform_device *pdev)
0045 {
0046     struct clk_hw_onecell_data *clk_data;
0047     int r;
0048     struct device_node *node = pdev->dev.of_node;
0049
0050     clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
0051
0052     mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
0053                         clk_data);
0054
0055     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0056     if (r)
0057         dev_err(&pdev->dev,
0058             "could not register clock provider: %s: %d\n",
0059             pdev->name, r);
0060
0061     return r;
0062 }
0063
0064 static struct platform_driver clk_mt2701_img_drv = {
0065     .probe = clk_mt2701_img_probe,
0066     .driver = {
0067         .name = "clk-mt2701-img",
0068         .of_match_table = of_match_clk_mt2701_img,
0069     },
0070 };
0071
0072 builtin_platform_driver(clk_mt2701_img_drv);