101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Wendell Lin <wendell.lin@mediatek.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/clock/mt6779-clk.h>
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#include <linux/slab.h>
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#include "clk-mtk.h"
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#include "clk-gate.h"
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#define MT_CLKMGR_MODULE_INIT 0
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#define CCF_SUBSYS_DEBUG 1
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static const struct mtk_gate_regs apu0_cg_regs = {
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.set_ofs = 0x0004,
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.clr_ofs = 0x0008,
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.sta_ofs = 0x0000,
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};
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#define GATE_APU0(_id, _name, _parent, _shift) { \
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.id = _id, \
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.name = _name, \
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.parent_name = _parent, \
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.regs = &apu0_cg_regs, \
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.shift = _shift, \
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.ops = &mtk_clk_gate_ops_setclr, \
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}
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static const struct mtk_gate apu0_clks[] = {
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GATE_APU0(CLK_APU0_APU, "apu0_apu", "dsp1_sel", 0),
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GATE_APU0(CLK_APU0_AXI_M, "apu0_axi", "dsp1_sel", 1),
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GATE_APU0(CLK_APU0_JTAG, "apu0_jtag", "dsp1_sel", 2),
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};
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static const struct of_device_id of_match_clk_mt6779_apu0[] = {
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{ .compatible = "mediatek,mt6779-apu0", },
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{}
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};
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static int clk_mt6779_apu0_probe(struct platform_device *pdev)
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{
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struct clk_onecell_data *clk_data;
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struct device_node *node = pdev->dev.of_node;
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int ret;
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clk_data = mtk_alloc_clk_data(CLK_APU0_NR_CLK);
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if (!clk_data) {
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pr_notice("%s(): alloc clk data failed\n", __func__);
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return -ENOMEM;
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}
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#if CCF_SUBSYS_DEBUG
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pr_info("%s(): clk data number: %d\n", __func__, clk_data->clk_num);
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#endif
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mtk_clk_register_gates(node, apu0_clks, ARRAY_SIZE(apu0_clks),
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clk_data);
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ret = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
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if (ret) {
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pr_notice("%s(): could not register clock provider: %d\n",
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__func__, ret);
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kfree(clk_data);
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}
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return ret;
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}
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static struct platform_driver clk_mt6779_apu0_drv = {
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.probe = clk_mt6779_apu0_probe,
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.driver = {
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.name = "clk-mt6779-apu0",
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.of_match_table = of_match_clk_mt6779_apu0,
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},
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};
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#if MT_CLKMGR_MODULE_INIT
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builtin_platform_driver(clk_mt6779_apu0_drv);
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#else
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static int __init clk_mt6779_apu0_platform_init(void)
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{
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return platform_driver_register(&clk_mt6779_apu0_drv);
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}
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arch_initcall_sync(clk_mt6779_apu0_platform_init);
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#endif /* MT_CLKMGR_MODULE_INIT */
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