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 __SPI_PRIV_H
18 #define __SPI_PRIV_H
19 
20 #include <spi.h>
21 #include <seos.h>
22 
23 struct SpiDevice {
24     const struct SpiDevice_ops *ops;
25     void *pdata;
26 };
27 
28 struct SpiDevice_ops {
29     int (*masterStartSync)(struct SpiDevice *dev, spi_cs_t cs,
30             const struct SpiMode *mode);
31     int (*masterStartAsync)(struct SpiDevice *dev, spi_cs_t cs,
32             const struct SpiMode *mode);
33 
34     int (*masterRxTx)(struct SpiDevice *dev, void *rxBuf, const void *txBuf,
35             size_t size, const struct SpiMode *mode);
36 
37     int (*masterStopSync)(struct SpiDevice *dev);
38     int (*masterStopAsync)(struct SpiDevice *dev);
39 
40     int (*slaveStartSync)(struct SpiDevice *dev, const struct SpiMode *mode);
41     int (*slaveStartAsync)(struct SpiDevice *dev, const struct SpiMode *mode);
42 
43     int (*slaveIdle)(struct SpiDevice *dev, const struct SpiMode *mode);
44     int (*slaveRxTx)(struct SpiDevice *dev, void *rxBuf, const void *txBuf,
45             size_t size, const struct SpiMode *mode);
46 
47     void (*slaveSetCsInterrupt)(struct SpiDevice *dev, bool enabled);
48     bool (*slaveCsIsActive)(struct SpiDevice *dev);
49 
50     int (*slaveStopSync)(struct SpiDevice *dev);
51     int (*slaveStopAsync)(struct SpiDevice *dev);
52 
53     int (*release)(struct SpiDevice *dev);
54 };
55 
56 int spiRequest(struct SpiDevice *dev, uint8_t busId);
57 
58 void spi_masterStartAsync_done(struct SpiDevice *dev, int err);
59 void spiMasterRxTxDone(struct SpiDevice *dev, int err);
60 void spiMasterStopAsyncDone(struct SpiDevice *dev, int err);
61 
62 void spiSlaveStartAsyncDone(struct SpiDevice *dev, int err);
63 void spiSlaveRxTxDone(struct SpiDevice *dev, int err);
64 void spiSlaveCsInactive(struct SpiDevice *dev);
65 void spiSlaveStopAsyncDone(struct SpiDevice *dev, int err);
66 
67 #endif /* __SPI_PRIV_H */
68