linux/drivers/clk/sunxi-ng/ccu_sdm.h
Thomas Gleixner 9c92ab6191 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 285 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:36:37 +02:00

73 lines
1.8 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2017 Chen-Yu Tsai. All rights reserved.
*/
#ifndef _CCU_SDM_H
#define _CCU_SDM_H
#include <linux/clk-provider.h>
#include "ccu_common.h"
struct ccu_sdm_setting {
unsigned long rate;
/*
* XXX We don't know what the step and bottom register fields
* mean. Just copy the whole register value from the vendor
* kernel for now.
*/
u32 pattern;
/*
* M and N factors here should be the values used in
* calculation, not the raw values written to registers
*/
u32 m;
u32 n;
};
struct ccu_sdm_internal {
struct ccu_sdm_setting *table;
u32 table_size;
/* early SoCs don't have the SDM enable bit in the PLL register */
u32 enable;
/* second enable bit in tuning register */
u32 tuning_enable;
u16 tuning_reg;
};
#define _SUNXI_CCU_SDM(_table, _enable, \
_reg, _reg_enable) \
{ \
.table = _table, \
.table_size = ARRAY_SIZE(_table), \
.enable = _enable, \
.tuning_enable = _reg_enable, \
.tuning_reg = _reg, \
}
bool ccu_sdm_helper_is_enabled(struct ccu_common *common,
struct ccu_sdm_internal *sdm);
void ccu_sdm_helper_enable(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate);
void ccu_sdm_helper_disable(struct ccu_common *common,
struct ccu_sdm_internal *sdm);
bool ccu_sdm_helper_has_rate(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate);
unsigned long ccu_sdm_helper_read_rate(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
u32 m, u32 n);
int ccu_sdm_helper_get_factors(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate,
unsigned long *m, unsigned long *n);
#endif