111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/clk-provider.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include "clk-mtk.h"
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#include "clk-gate.h"
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#include <dt-bindings/clock/mt6877-clk.h>
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#define MT_CCF_BRINGUP 1
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/* Regular Number Definition */
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#define INV_OFS -1
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#define INV_BIT -1
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static const struct mtk_gate_regs msdc0_cg_regs = {
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.set_ofs = 0x68,
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.clr_ofs = 0x68,
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.sta_ofs = 0x68,
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};
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#define GATE_MSDC0(_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 = &msdc0_cg_regs, \
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.shift = _shift, \
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.ops = &mtk_clk_gate_ops_no_setclr_inv, \
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}
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static const struct mtk_gate msdc0_clks[] = {
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GATE_MSDC0(CLK_MSDC0_MSDC_NEW_RX_PATH_SEL, "msdc0_msdc_rx",
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"msdc_new_rx_ck"/* parent */, 0),
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};
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static int clk_mt6877_msdc0_probe(struct platform_device *pdev)
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{
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struct clk_onecell_data *clk_data;
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int r;
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struct device_node *node = pdev->dev.of_node;
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#if MT_CCF_BRINGUP
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pr_notice("%s init begin\n", __func__);
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#endif
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clk_data = mtk_alloc_clk_data(CLK_MSDC0_NR_CLK);
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mtk_clk_register_gates(node, msdc0_clks, ARRAY_SIZE(msdc0_clks),
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clk_data);
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r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
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if (r)
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pr_err("%s(): could not register clock provider: %d\n",
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__func__, r);
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#if MT_CCF_BRINGUP
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pr_notice("%s init end\n", __func__);
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#endif
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return r;
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}
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static const struct of_device_id of_match_clk_mt6877_msdc[] = {
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{
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.compatible = "mediatek,mt6877-msdc0sys",
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.data = clk_mt6877_msdc0_probe,
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}, {
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/* sentinel */
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}
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};
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static int clk_mt6877_msdc_probe(struct platform_device *pdev)
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{
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int (*clk_probe)(struct platform_device *pd);
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int r;
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clk_probe = of_device_get_match_data(&pdev->dev);
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if (!clk_probe)
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return -EINVAL;
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r = clk_probe(pdev);
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if (r)
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dev_err(&pdev->dev,
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"could not register clock provider: %s: %d\n",
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pdev->name, r);
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return r;
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}
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static struct platform_driver clk_mt6877_msdc_drv = {
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.probe = clk_mt6877_msdc_probe,
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.driver = {
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.name = "clk-mt6877-msdc",
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.of_match_table = of_match_clk_mt6877_msdc,
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},
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};
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static int __init clk_mt6877_msdc_init(void)
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{
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return platform_driver_register(&clk_mt6877_msdc_drv);
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}
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arch_initcall(clk_mt6877_msdc_init);
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