drivers/iio/dac/stm32-dac-core.h

   1 /*
   2  * This file is part of STM32 DAC driver
   3  *
   4  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
   5  * Author: Fabrice Gasnier <fabrice.gasnier@st.com>.
   6  *
   7  * License type: GPLv2
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License version 2 as published by
  11  * the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15  * or FITNESS FOR A PARTICULAR PURPOSE.
  16  * See the GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along with
  19  * this program. If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #ifndef __STM32_DAC_CORE_H
  23 #define __STM32_DAC_CORE_H
  24
  25 #include <linux/regmap.h>
  26
  27 /* STM32 DAC registers */
  28 #define STM32_DAC_CR            0x00
  29 #define STM32_DAC_DHR12R1       0x08
  30 #define STM32_DAC_DHR12R2       0x14
  31 #define STM32_DAC_DOR1          0x2C
  32 #define STM32_DAC_DOR2          0x30
  33
  34 /* STM32_DAC_CR bit fields */
  35 #define STM32_DAC_CR_EN1                BIT(0)
  36 #define STM32H7_DAC_CR_HFSEL            BIT(15)
  37 #define STM32_DAC_CR_EN2                BIT(16)
  38
  39 /**
  40  * struct stm32_dac_common - stm32 DAC driver common data (for all instances)
  41  * @regmap: DAC registers shared via regmap
  42  * @vref_mv: reference voltage (mv)
  43  * @hfsel: high speed bus clock selected
  44  */
  45 struct stm32_dac_common {
  46         struct regmap                   *regmap;
  47         int                             vref_mv;
  48         bool                            hfsel;
  49 };
  50
  51 #endif