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e6849e2fd8
As what Linux Kernel 5.3.0 provides when enable/disable clk, there is an enable_count in clk_core_disable/enable. Introduce enable_count to track the clk enable/disable count when clk_enable/disable for CCF. And Initialize enable_count to 0 when register the clk. And clk tree dump with enable_count will be supported, it will be easy for us to check the clk status with enable_count Signed-off-by: Peng Fan <peng.fan@nxp.com>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 DENX Software Engineering
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* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
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*/
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#include <common.h>
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#include <clk-uclass.h>
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#include <dm/device.h>
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#include <dm/uclass.h>
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#include <dm/lists.h>
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#include <dm/device-internal.h>
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#include <clk.h>
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int clk_register(struct clk *clk, const char *drv_name,
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const char *name, const char *parent_name)
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{
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struct udevice *parent;
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struct driver *drv;
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int ret;
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ret = uclass_get_device_by_name(UCLASS_CLK, parent_name, &parent);
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if (ret)
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printf("%s: UCLASS parent: 0x%p\n", __func__, parent);
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debug("%s: name: %s parent: %s [0x%p]\n", __func__, name, parent->name,
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parent);
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drv = lists_driver_lookup_name(drv_name);
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if (!drv) {
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printf("%s: %s is not a valid driver name\n",
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__func__, drv_name);
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return -ENOENT;
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}
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ret = device_bind(parent, drv, name, NULL, -1, &clk->dev);
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if (ret) {
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printf("%s: CLK: %s driver bind error [%d]!\n", __func__, name,
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ret);
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return ret;
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}
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clk->enable_count = 0;
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/* Store back pointer to clk from udevice */
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clk->dev->uclass_priv = clk;
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return 0;
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}
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ulong clk_generic_get_rate(struct clk *clk)
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{
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return clk_get_parent_rate(clk);
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}
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const char *clk_hw_get_name(const struct clk *hw)
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{
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return hw->dev->name;
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}
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bool clk_dev_binded(struct clk *clk)
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{
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if (clk->dev && (clk->dev->flags & DM_FLAG_BOUND))
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return true;
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return false;
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}
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