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rpmsg_port_spi.c: setfreq to 0 to shutdown the spi device

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In the stop process, add SPI_SETFREQUENCY(rpspi->spi, 0) to stutdown
the spi device.

Signed-off-by: liaoao <liaoao@xiaomi.com>
This commit is contained in:
liaoao
2024-12-23 17:13:55 +08:00
committed by Xiang Xiao
parent 1fba4986c9
commit ec06af22b8
1 changed files with 8 additions and 1 deletions
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drivers/rpmsg/rpmsg_port_spi.c
+8 -1
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@@ -90,6 +90,7 @@ struct rpmsg_port_spi_s
/* SPI devices' configuration */
uint32_t freq;
uint32_t devid;
int nbits;
@@ -381,6 +382,11 @@ static int rpmsg_port_spi_sreq_handler(FAR struct ioexpander_dev_s *dev,
rpmsginfo("sreq enter\n");
if (rpspi->state == RPMSG_PORT_SPI_STATE_UNCONNECTED)
{
SPI_SETFREQUENCY(rpspi->spi, rpspi->freq);
}
rpmsg_port_spi_exchange(rpspi);
return 0;
}
@@ -460,6 +466,7 @@ rpmsg_port_spi_process_packet(FAR struct rpmsg_port_spi_s *rpspi,
rpmsg_port_unregister(&rpspi->port);
rpspi->state = RPMSG_PORT_SPI_STATE_UNCONNECTED;
IOEXP_WRITEPIN(rpspi->ioe, rpspi->mreq, 0);
SPI_SETFREQUENCY(rpspi->spi, 0);
rpmsg_port_queue_return_buffer(&rpspi->port.rxq, rxhdr);
break;
@@ -582,12 +589,12 @@ rpmsg_port_spi_init_hardware(FAR struct rpmsg_port_spi_s *rpspi,
SPI_SETBITS(spi, spicfg->nbits);
SPI_SETMODE(spi, spicfg->mode);
SPI_SETFREQUENCY(spi, spicfg->freq);
SPI_REGISTERCALLBACK(spi, rpmsg_port_spi_complete_handler, rpspi);
SPI_SELECT(spi, spicfg->devid, false);
rpspi->spi = spi;
rpspi->ioe = ioe;
rpspi->freq = spicfg->freq;
rpspi->devid = spicfg->devid;
rpspi->nbits = spicfg->nbits;