1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef __PLAT_I2C_H
18#define __PLAT_I2C_H
19
20#include <gpio.h>
21#include <platform.h>
22#include <plat/cmsis.h>
23#include <plat/gpio.h>
24#include <plat/plat.h>
25
26struct StmI2cDmaCfg {
27    uint8_t channel;
28    uint8_t stream;
29};
30
31struct StmI2cGpioCfg {
32    uint8_t gpioNum;
33    enum StmGpioAltFunc func;
34};
35
36struct StmI2cBoardCfg {
37    struct StmI2cGpioCfg gpioScl;
38    struct StmI2cGpioCfg gpioSda;
39
40    enum StmGpioSpeed gpioSpeed;
41    enum GpioPullMode gpioPull;
42
43    struct StmI2cDmaCfg dmaRx;
44    struct StmI2cDmaCfg dmaTx;
45
46    enum PlatSleepDevID sleepDev;
47};
48
49#define I2C_DMA_BUS         0
50
51#define I2C1_GPIO_SCL_PB6   { .gpioNum = GPIO_PB(6), .func = GPIO_AF_I2C1 }
52#define I2C1_GPIO_SCL_PB8   { .gpioNum = GPIO_PB(8), .func = GPIO_AF_I2C1 }
53#define I2C1_GPIO_SDA_PB7   { .gpioNum = GPIO_PB(7), .func = GPIO_AF_I2C1 }
54#define I2C1_GPIO_SDA_PB9   { .gpioNum = GPIO_PB(9), .func = GPIO_AF_I2C1 }
55#define I2C1_DMA_RX_CFG_A   { .channel = 1, .stream = 0 }
56#define I2C1_DMA_RX_CFG_B   { .channel = 1, .stream = 5 }
57#define I2C1_DMA_TX_CFG_A   { .channel = 0, .stream = 1 }
58#define I2C1_DMA_TX_CFG_B   { .channel = 1, .stream = 6 }
59#define I2C1_DMA_TX_CFG_C   { .channel = 1, .stream = 7 }
60
61#define I2C2_GPIO_SCL_PB10  { .gpioNum = GPIO_PB(10), .func = GPIO_AF_I2C2_A }
62#define I2C2_GPIO_SDA_PB3   { .gpioNum = GPIO_PB(3), .func = GPIO_AF_I2C2_B }
63#define I2C2_GPIO_SDA_PB9   { .gpioNum = GPIO_PB(9), .func = GPIO_AF_I2C2_B }
64#define I2C2_GPIO_SDA_PB11  { .gpioNum = GPIO_PB(11), .func = GPIO_AF_I2C2_A }
65#define I2C2_DMA_RX_CFG_A   { .channel = 7, .stream = 2 }
66#define I2C2_DMA_RX_CFG_B   { .channel = 7, .stream = 3 }
67#define I2C2_DMA_TX_CFG     { .channel = 7, .stream = 7 }
68
69#define I2C3_GPIO_SCL_PA8   { .gpioNum = GPIO_PA(8), .func = GPIO_AF_I2C3_A }
70#define I2C3_GPIO_SDA_PB4   { .gpioNum = GPIO_PB(4), .func = GPIO_AF_I2C3_B }
71#define I2C3_GPIO_SDA_PC9   { .gpioNum = GPIO_PC(9), .func = GPIO_AF_I2C3_A }
72#define I2C3_DMA_RX_CFG_A   { .channel = 1, .stream = 1 }
73#define I2C3_DMA_RX_CFG_B   { .channel = 3, .stream = 2 }
74#define I2C3_DMA_TX_CFG_A   { .channel = 3, .stream = 4 }
75#define I2C3_DMA_TX_CFG_B   { .channel = 6, .stream = 5 }
76
77extern const struct StmI2cBoardCfg *boardStmI2cCfg(uint8_t busId);
78
79#endif /* __PLAT_I2C_H */
80