Merge tag 'for-5.20/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
[linux-2.6-microblaze.git] / 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_ADC_OFFSET                0x100
29 #define STM32_ADCX_COMN_OFFSET          0x300
30
31 /* STM32F4 - Registers for each ADC instance */
32 #define STM32F4_ADC_SR                  0x00
33 #define STM32F4_ADC_CR1                 0x04
34 #define STM32F4_ADC_CR2                 0x08
35 #define STM32F4_ADC_SMPR1               0x0C
36 #define STM32F4_ADC_SMPR2               0x10
37 #define STM32F4_ADC_HTR                 0x24
38 #define STM32F4_ADC_LTR                 0x28
39 #define STM32F4_ADC_SQR1                0x2C
40 #define STM32F4_ADC_SQR2                0x30
41 #define STM32F4_ADC_SQR3                0x34
42 #define STM32F4_ADC_JSQR                0x38
43 #define STM32F4_ADC_JDR1                0x3C
44 #define STM32F4_ADC_JDR2                0x40
45 #define STM32F4_ADC_JDR3                0x44
46 #define STM32F4_ADC_JDR4                0x48
47 #define STM32F4_ADC_DR                  0x4C
48
49 /* STM32F4 - common registers for all ADC instances: 1, 2 & 3 */
50 #define STM32F4_ADC_CSR                 (STM32_ADCX_COMN_OFFSET + 0x00)
51 #define STM32F4_ADC_CCR                 (STM32_ADCX_COMN_OFFSET + 0x04)
52
53 /* STM32F4_ADC_SR - bit fields */
54 #define STM32F4_OVR                     BIT(5)
55 #define STM32F4_STRT                    BIT(4)
56 #define STM32F4_EOC                     BIT(1)
57
58 /* STM32F4_ADC_CR1 - bit fields */
59 #define STM32F4_OVRIE                   BIT(26)
60 #define STM32F4_RES_SHIFT               24
61 #define STM32F4_RES_MASK                GENMASK(25, 24)
62 #define STM32F4_SCAN                    BIT(8)
63 #define STM32F4_EOCIE                   BIT(5)
64
65 /* STM32F4_ADC_CR2 - bit fields */
66 #define STM32F4_SWSTART                 BIT(30)
67 #define STM32F4_EXTEN_SHIFT             28
68 #define STM32F4_EXTEN_MASK              GENMASK(29, 28)
69 #define STM32F4_EXTSEL_SHIFT            24
70 #define STM32F4_EXTSEL_MASK             GENMASK(27, 24)
71 #define STM32F4_EOCS                    BIT(10)
72 #define STM32F4_DDS                     BIT(9)
73 #define STM32F4_DMA                     BIT(8)
74 #define STM32F4_ADON                    BIT(0)
75
76 /* STM32F4_ADC_CSR - bit fields */
77 #define STM32F4_OVR3                    BIT(21)
78 #define STM32F4_EOC3                    BIT(17)
79 #define STM32F4_OVR2                    BIT(13)
80 #define STM32F4_EOC2                    BIT(9)
81 #define STM32F4_OVR1                    BIT(5)
82 #define STM32F4_EOC1                    BIT(1)
83
84 /* STM32F4_ADC_CCR - bit fields */
85 #define STM32F4_ADC_ADCPRE_SHIFT        16
86 #define STM32F4_ADC_ADCPRE_MASK         GENMASK(17, 16)
87
88 /* STM32H7 - Registers for each ADC instance */
89 #define STM32H7_ADC_ISR                 0x00
90 #define STM32H7_ADC_IER                 0x04
91 #define STM32H7_ADC_CR                  0x08
92 #define STM32H7_ADC_CFGR                0x0C
93 #define STM32H7_ADC_SMPR1               0x14
94 #define STM32H7_ADC_SMPR2               0x18
95 #define STM32H7_ADC_PCSEL               0x1C
96 #define STM32H7_ADC_SQR1                0x30
97 #define STM32H7_ADC_SQR2                0x34
98 #define STM32H7_ADC_SQR3                0x38
99 #define STM32H7_ADC_SQR4                0x3C
100 #define STM32H7_ADC_DR                  0x40
101 #define STM32H7_ADC_DIFSEL              0xC0
102 #define STM32H7_ADC_CALFACT             0xC4
103 #define STM32H7_ADC_CALFACT2            0xC8
104
105 /* STM32MP1 - ADC2 instance option register */
106 #define STM32MP1_ADC2_OR                0xD0
107
108 /* STM32H7 - common registers for all ADC instances */
109 #define STM32H7_ADC_CSR                 (STM32_ADCX_COMN_OFFSET + 0x00)
110 #define STM32H7_ADC_CCR                 (STM32_ADCX_COMN_OFFSET + 0x08)
111
112 /* STM32H7_ADC_ISR - bit fields */
113 #define STM32MP1_VREGREADY              BIT(12)
114 #define STM32H7_OVR                     BIT(4)
115 #define STM32H7_EOC                     BIT(2)
116 #define STM32H7_ADRDY                   BIT(0)
117
118 /* STM32H7_ADC_IER - bit fields */
119 #define STM32H7_OVRIE                   STM32H7_OVR
120 #define STM32H7_EOCIE                   STM32H7_EOC
121
122 /* STM32H7_ADC_CR - bit fields */
123 #define STM32H7_ADCAL                   BIT(31)
124 #define STM32H7_ADCALDIF                BIT(30)
125 #define STM32H7_DEEPPWD                 BIT(29)
126 #define STM32H7_ADVREGEN                BIT(28)
127 #define STM32H7_LINCALRDYW6             BIT(27)
128 #define STM32H7_LINCALRDYW5             BIT(26)
129 #define STM32H7_LINCALRDYW4             BIT(25)
130 #define STM32H7_LINCALRDYW3             BIT(24)
131 #define STM32H7_LINCALRDYW2             BIT(23)
132 #define STM32H7_LINCALRDYW1             BIT(22)
133 #define STM32H7_ADCALLIN                BIT(16)
134 #define STM32H7_BOOST                   BIT(8)
135 #define STM32H7_ADSTP                   BIT(4)
136 #define STM32H7_ADSTART                 BIT(2)
137 #define STM32H7_ADDIS                   BIT(1)
138 #define STM32H7_ADEN                    BIT(0)
139
140 /* STM32H7_ADC_CFGR bit fields */
141 #define STM32H7_EXTEN_SHIFT             10
142 #define STM32H7_EXTEN_MASK              GENMASK(11, 10)
143 #define STM32H7_EXTSEL_SHIFT            5
144 #define STM32H7_EXTSEL_MASK             GENMASK(9, 5)
145 #define STM32H7_RES_SHIFT               2
146 #define STM32H7_RES_MASK                GENMASK(4, 2)
147 #define STM32H7_DMNGT_SHIFT             0
148 #define STM32H7_DMNGT_MASK              GENMASK(1, 0)
149
150 enum stm32h7_adc_dmngt {
151         STM32H7_DMNGT_DR_ONLY,          /* Regular data in DR only */
152         STM32H7_DMNGT_DMA_ONESHOT,      /* DMA one shot mode */
153         STM32H7_DMNGT_DFSDM,            /* DFSDM mode */
154         STM32H7_DMNGT_DMA_CIRC,         /* DMA circular mode */
155 };
156
157 /* STM32H7_ADC_CALFACT - bit fields */
158 #define STM32H7_CALFACT_D_SHIFT         16
159 #define STM32H7_CALFACT_D_MASK          GENMASK(26, 16)
160 #define STM32H7_CALFACT_S_SHIFT         0
161 #define STM32H7_CALFACT_S_MASK          GENMASK(10, 0)
162
163 /* STM32H7_ADC_CALFACT2 - bit fields */
164 #define STM32H7_LINCALFACT_SHIFT        0
165 #define STM32H7_LINCALFACT_MASK         GENMASK(29, 0)
166
167 /* STM32H7_ADC_CSR - bit fields */
168 #define STM32H7_OVR_SLV                 BIT(20)
169 #define STM32H7_EOC_SLV                 BIT(18)
170 #define STM32H7_OVR_MST                 BIT(4)
171 #define STM32H7_EOC_MST                 BIT(2)
172
173 /* STM32H7_ADC_CCR - bit fields */
174 #define STM32H7_VBATEN                  BIT(24)
175 #define STM32H7_VREFEN                  BIT(22)
176 #define STM32H7_PRESC_SHIFT             18
177 #define STM32H7_PRESC_MASK              GENMASK(21, 18)
178 #define STM32H7_CKMODE_SHIFT            16
179 #define STM32H7_CKMODE_MASK             GENMASK(17, 16)
180
181 /* STM32MP1_ADC2_OR - bit fields */
182 #define STM32MP1_VDDCOREEN              BIT(0)
183
184 /**
185  * struct stm32_adc_common - stm32 ADC driver common data (for all instances)
186  * @base:               control registers base cpu addr
187  * @phys_base:          control registers base physical addr
188  * @rate:               clock rate used for analog circuitry
189  * @vref_mv:            vref voltage (mv)
190  * @lock:               spinlock
191  */
192 struct stm32_adc_common {
193         void __iomem                    *base;
194         phys_addr_t                     phys_base;
195         unsigned long                   rate;
196         int                             vref_mv;
197         spinlock_t                      lock;           /* lock for common register */
198 };
199
200 #endif