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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This file is part of STM32 ADC driver
   4  *
   5  * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
   6  * Author: Fabrice Gasnier <fabrice.gasnier@st.com>.
   7  *
   8  */
   9
  10 #ifndef __STM32_ADC_H
  11 #define __STM32_ADC_H
  12
  13 /*
  14  * STM32 - ADC global register map
  15  * ________________________________________________________
  16  * | Offset |                 Register                    |
  17  * --------------------------------------------------------
  18  * | 0x000  |                Master ADC1                  |
  19  * --------------------------------------------------------
  20  * | 0x100  |                Slave ADC2                   |
  21  * --------------------------------------------------------
  22  * | 0x200  |                Slave ADC3                   |
  23  * --------------------------------------------------------
  24  * | 0x300  |         Master & Slave common regs          |
  25  * --------------------------------------------------------
  26  */
  27 #define STM32_ADC_MAX_ADCS              3
  28 #define STM32_ADCX_COMN_OFFSET          0x300
  29
  30 /**
  31  * struct stm32_adc_common - stm32 ADC driver common data (for all instances)
  32  * @base:               control registers base cpu addr
  33  * @phys_base:          control registers base physical addr
  34  * @rate:               clock rate used for analog circuitry
  35  * @vref_mv:            vref voltage (mv)
  36  */
  37 struct stm32_adc_common {
  38         void __iomem                    *base;
  39         phys_addr_t                     phys_base;
  40         unsigned long                   rate;
  41         int                             vref_mv;
  42 };
  43
  44 #endif