mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 02:45:26 +07:00
89a3dfb787
Some clocks can be switched to a mode called fractional that have two fixed output rate you can choose from. Add a small library to deal with those clocks. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/20160629190535.11855-4-maxime.ripard@free-electrons.com
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2016 Maxime Ripard. All rights reserved.
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _CCU_FRAC_H_
|
|
#define _CCU_FRAC_H_
|
|
|
|
#include <linux/clk-provider.h>
|
|
|
|
#include "ccu_common.h"
|
|
|
|
struct _ccu_frac {
|
|
u32 enable;
|
|
u32 select;
|
|
|
|
unsigned long rates[2];
|
|
};
|
|
|
|
#define _SUNXI_CCU_FRAC(_enable, _select, _rate1, _rate2) \
|
|
{ \
|
|
.enable = _enable, \
|
|
.select = _select, \
|
|
.rates = { _rate1, _rate2 }, \
|
|
}
|
|
|
|
bool ccu_frac_helper_is_enabled(struct ccu_common *common,
|
|
struct _ccu_frac *cf);
|
|
void ccu_frac_helper_enable(struct ccu_common *common,
|
|
struct _ccu_frac *cf);
|
|
void ccu_frac_helper_disable(struct ccu_common *common,
|
|
struct _ccu_frac *cf);
|
|
|
|
bool ccu_frac_helper_has_rate(struct ccu_common *common,
|
|
struct _ccu_frac *cf,
|
|
unsigned long rate);
|
|
|
|
unsigned long ccu_frac_helper_read_rate(struct ccu_common *common,
|
|
struct _ccu_frac *cf);
|
|
|
|
int ccu_frac_helper_set_rate(struct ccu_common *common,
|
|
struct _ccu_frac *cf,
|
|
unsigned long rate);
|
|
|
|
#endif /* _CCU_FRAC_H_ */
|