xref: /openbmc/u-boot/drivers/adc/stm32-adc-core.h (revision cbd2fba1)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
4  * Author: Fabrice Gasnier <fabrice.gasnier@st.com>.
5  *
6  * Originally based on the Linux kernel v4.18 drivers/iio/adc/stm32-adc-core.h.
7  */
8 
9 #ifndef __STM32_ADC_H
10 #define __STM32_ADC_H
11 
12 /*
13  * STM32 - ADC global register map
14  * ________________________________________________________
15  * | Offset |                 Register                    |
16  * --------------------------------------------------------
17  * | 0x000  |                Master ADC1                  |
18  * --------------------------------------------------------
19  * | 0x100  |                Slave ADC2                   |
20  * --------------------------------------------------------
21  * | 0x200  |                Slave ADC3                   |
22  * --------------------------------------------------------
23  * | 0x300  |         Master & Slave common regs          |
24  * --------------------------------------------------------
25  */
26 #define STM32_ADC_MAX_ADCS		3
27 #define STM32_ADCX_COMN_OFFSET		0x300
28 
29 #include <common.h>
30 #include <clk.h>
31 #include <dm.h>
32 
33 /**
34  * struct stm32_adc_common - stm32 ADC driver common data (for all instances)
35  * @base:		control registers base cpu addr
36  * @rate:		clock rate used for analog circuitry
37  * @aclk:		clock for the analog circuitry
38  * @bclk:		bus clock common for all ADCs
39  * @vref:		regulator reference
40  * @vref_uv:		reference supply voltage (uV)
41  */
42 struct stm32_adc_common {
43 	void __iomem *base;
44 	unsigned long rate;
45 	struct clk aclk;
46 	struct clk bclk;
47 	struct udevice *vref;
48 	int vref_uv;
49 };
50 
51 #endif
52