drivers/clk/sunxi-ng/ccu_frac.h

   1 /*
   2  * Copyright (c) 2016 Maxime Ripard. All rights reserved.
   3  *
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef _CCU_FRAC_H_
  15 #define _CCU_FRAC_H_
  16
  17 #include <linux/clk-provider.h>
  18
  19 #include "ccu_common.h"
  20
  21 struct ccu_frac_internal {
  22         u32             enable;
  23         u32             select;
  24
  25         unsigned long   rates[2];
  26 };
  27
  28 #define _SUNXI_CCU_FRAC(_enable, _select, _rate1, _rate2)               \
  29         {                                                               \
  30                 .enable = _enable,                                      \
  31                 .select = _select,                                      \
  32                 .rates = { _rate1, _rate2 },                            \
  33         }
  34
  35 bool ccu_frac_helper_is_enabled(struct ccu_common *common,
  36                                 struct ccu_frac_internal *cf);
  37 void ccu_frac_helper_enable(struct ccu_common *common,
  38                             struct ccu_frac_internal *cf);
  39 void ccu_frac_helper_disable(struct ccu_common *common,
  40                              struct ccu_frac_internal *cf);
  41
  42 bool ccu_frac_helper_has_rate(struct ccu_common *common,
  43                               struct ccu_frac_internal *cf,
  44                               unsigned long rate);
  45
  46 unsigned long ccu_frac_helper_read_rate(struct ccu_common *common,
  47                                         struct ccu_frac_internal *cf);
  48
  49 int ccu_frac_helper_set_rate(struct ccu_common *common,
  50                              struct ccu_frac_internal *cf,
  51                              unsigned long rate, u32 lock);
  52
  53 #endif /* _CCU_FRAC_H_ */