include/clocksource/samsung_pwm.h

   1 /*
   2  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   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  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 #ifndef __CLOCKSOURCE_SAMSUNG_PWM_H
  17 #define __CLOCKSOURCE_SAMSUNG_PWM_H
  18
  19 #include <linux/spinlock.h>
  20
  21 #define SAMSUNG_PWM_NUM         5
  22
  23 /*
  24  * Following declaration must be in an ifdef due to this symbol being static
  25  * in pwm-samsung driver if the clocksource driver is not compiled in and the
  26  * spinlock is not shared between both drivers.
  27  */
  28 #ifdef CONFIG_CLKSRC_SAMSUNG_PWM
  29 extern spinlock_t samsung_pwm_lock;
  30 #endif
  31
  32 struct samsung_pwm_variant {
  33         u8 bits;
  34         u8 div_base;
  35         u8 tclk_mask;
  36         u8 output_mask;
  37         bool has_tint_cstat;
  38 };
  39
  40 void samsung_pwm_clocksource_init(void __iomem *base,
  41                 unsigned int *irqs, struct samsung_pwm_variant *variant);
  42
  43 #endif /* __CLOCKSOURCE_SAMSUNG_PWM_H */