mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-24 04:34:08 +08:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* OMAP2-specific DPLL control functions
|
|
*
|
|
* Copyright (C) 2011 Nokia Corporation
|
|
* Paul Walmsley
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/io.h>
|
|
|
|
#include "clock.h"
|
|
#include "cm2xxx.h"
|
|
#include "cm-regbits-24xx.h"
|
|
|
|
/* Private functions */
|
|
|
|
/**
|
|
* _allow_idle - enable DPLL autoidle bits
|
|
* @clk: struct clk * of the DPLL to operate on
|
|
*
|
|
* Enable DPLL automatic idle control. The DPLL will enter low-power
|
|
* stop when its downstream clocks are gated. No return value.
|
|
* REVISIT: DPLL can optionally enter low-power bypass by writing 0x1
|
|
* instead. Add some mechanism to optionally enter this mode.
|
|
*/
|
|
static void _allow_idle(struct clk_hw_omap *clk)
|
|
{
|
|
if (!clk || !clk->dpll_data)
|
|
return;
|
|
|
|
omap2xxx_cm_set_dpll_auto_low_power_stop();
|
|
}
|
|
|
|
/**
|
|
* _deny_idle - prevent DPLL from automatically idling
|
|
* @clk: struct clk * of the DPLL to operate on
|
|
*
|
|
* Disable DPLL automatic idle control. No return value.
|
|
*/
|
|
static void _deny_idle(struct clk_hw_omap *clk)
|
|
{
|
|
if (!clk || !clk->dpll_data)
|
|
return;
|
|
|
|
omap2xxx_cm_set_dpll_disable_autoidle();
|
|
}
|
|
|
|
|
|
/* Public data */
|
|
const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll = {
|
|
.allow_idle = _allow_idle,
|
|
.deny_idle = _deny_idle,
|
|
};
|