1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* Copyright 2017 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Register map for MEC17xx processor
*/
/** @file qmspi_chip.h
*MEC17xx Quad SPI Master
*/
/** @defgroup MCHP MEC qmspi
*/
#ifndef _QMSPI_CHIP_H
#define _QMSPI_CHIP_H
#include <stdint.h>
#include <stddef.h>
/* struct spi_device_t */
#include "spi.h"
int qmspi_transaction_flush(const struct spi_device_t *spi_device);
int qmspi_transaction_wait(const struct spi_device_t *spi_device);
int qmspi_transaction_sync(const struct spi_device_t *spi_device,
const uint8_t *txdata, int txlen, uint8_t *rxdata,
int rxlen);
int qmspi_transaction_async(const struct spi_device_t *spi_device,
const uint8_t *txdata, int txlen, uint8_t *rxdata,
int rxlen);
int qmspi_enable(int port, int enable);
/*
* QMSPI0 Start
* flags
* b[0] = ignored
* b[1] = 1 enable QMSPI interrupts
* b[2] = 1 start
*/
void qmspi_cfg_irq_start(uint8_t flags);
/*
* QMSPI transmit and/or receive
* np_flags
* b[7:0] = flags
* b[0] = close(de-assert chip select when done)
* b[1] = enable Done and ProgError interrupt
* b[2] = start
* b[15:8] = number of tx pins
* b[24:16] = number of rx pins
*
* returns last descriptor 0 <= index < MCHP_QMSPI_MAX_DESCR
* or error (bit[7]==1)
*/
uint8_t qmspi_xfr(const struct spi_device_t *spi_device, uint32_t np_flags,
const uint8_t *txdata, uint32_t ntx, uint8_t *rxdata,
uint32_t nrx);
#endif /* #ifndef _QMSPI_CHIP_H */
/** @}
*/
|
