// 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 0 x1
* 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,
};
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