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v6.13.7
 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * OMAP2-specific DPLL control functions
 4 *
 5 * Copyright (C) 2011 Nokia Corporation
 6 * Paul Walmsley
 7 */
 8
 9#include <linux/kernel.h>
10#include <linux/errno.h>
11#include <linux/clk.h>
12#include <linux/io.h>
13
14#include "clock.h"
15#include "cm2xxx.h"
16#include "cm-regbits-24xx.h"
17
18/* Private functions */
19
20/**
21 * _allow_idle - enable DPLL autoidle bits
22 * @clk: struct clk * of the DPLL to operate on
23 *
24 * Enable DPLL automatic idle control.  The DPLL will enter low-power
25 * stop when its downstream clocks are gated.  No return value.
26 * REVISIT: DPLL can optionally enter low-power bypass by writing 0x1
27 * instead.  Add some mechanism to optionally enter this mode.
28 */
29static void _allow_idle(struct clk_hw_omap *clk)
30{
31	if (!clk || !clk->dpll_data)
32		return;
33
34	omap2xxx_cm_set_dpll_auto_low_power_stop();
35}
36
37/**
38 * _deny_idle - prevent DPLL from automatically idling
39 * @clk: struct clk * of the DPLL to operate on
40 *
41 * Disable DPLL automatic idle control.  No return value.
42 */
43static void _deny_idle(struct clk_hw_omap *clk)
44{
45	if (!clk || !clk->dpll_data)
46		return;
47
48	omap2xxx_cm_set_dpll_disable_autoidle();
49}
50
51
52/* Public data */
53const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll = {
54	.allow_idle	= _allow_idle,
55	.deny_idle	= _deny_idle,
56};
v6.2
 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * OMAP2-specific DPLL control functions
 4 *
 5 * Copyright (C) 2011 Nokia Corporation
 6 * Paul Walmsley
 7 */
 8
 9#include <linux/kernel.h>
10#include <linux/errno.h>
11#include <linux/clk.h>
12#include <linux/io.h>
13
14#include "clock.h"
15#include "cm2xxx.h"
16#include "cm-regbits-24xx.h"
17
18/* Private functions */
19
20/**
21 * _allow_idle - enable DPLL autoidle bits
22 * @clk: struct clk * of the DPLL to operate on
23 *
24 * Enable DPLL automatic idle control.  The DPLL will enter low-power
25 * stop when its downstream clocks are gated.  No return value.
26 * REVISIT: DPLL can optionally enter low-power bypass by writing 0x1
27 * instead.  Add some mechanism to optionally enter this mode.
28 */
29static void _allow_idle(struct clk_hw_omap *clk)
30{
31	if (!clk || !clk->dpll_data)
32		return;
33
34	omap2xxx_cm_set_dpll_auto_low_power_stop();
35}
36
37/**
38 * _deny_idle - prevent DPLL from automatically idling
39 * @clk: struct clk * of the DPLL to operate on
40 *
41 * Disable DPLL automatic idle control.  No return value.
42 */
43static void _deny_idle(struct clk_hw_omap *clk)
44{
45	if (!clk || !clk->dpll_data)
46		return;
47
48	omap2xxx_cm_set_dpll_disable_autoidle();
49}
50
51
52/* Public data */
53const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll = {
54	.allow_idle	= _allow_idle,
55	.deny_idle	= _deny_idle,
56};