diff options
| -rw-r--r-- | drivers/spi/spi_qmsi.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/spi/spi_qmsi.c b/drivers/spi/spi_qmsi.c index 7d74bedbb..ac9d72180 100644 --- a/drivers/spi/spi_qmsi.c +++ b/drivers/spi/spi_qmsi.c @@ -46,6 +46,7 @@ struct spi_qmsi_runtime { qm_spi_config_t cfg; int rc; bool loopback; + struct nano_sem sem; }; static inline qm_spi_bmode_t config_to_bmode(uint8_t mode) @@ -147,10 +148,14 @@ static int spi_qmsi_transceive(struct device *dev, qm_spi_async_transfer_t *xfer; int rc; - if (pending_transfers[spi].dev) + nano_sem_take(&context->sem, TICKS_UNLIMITED); + if (pending_transfers[spi].dev) { + nano_sem_give(&context->sem); return -EBUSY; - + } pending_transfers[spi].dev = dev; + nano_sem_give(&context->sem); + xfer = &pending_transfers[spi].xfer; xfer->rx = rx_buf; @@ -178,8 +183,9 @@ static int spi_qmsi_transceive(struct device *dev, QM_SPI[spi]->ctrlr0 |= BIT(11); rc = qm_spi_set_config(spi, cfg); - if (rc != 0) + if (rc != 0) { return -EINVAL; + } spi_control_cs(dev, true); @@ -188,7 +194,6 @@ static int spi_qmsi_transceive(struct device *dev, spi_control_cs(dev, false); return -EIO; } - device_sync_call_wait(&context->sync); return context->rc ? -EIO : 0; @@ -264,6 +269,8 @@ static int spi_qmsi_init(struct device *dev) context->gpio_cs = gpio_cs_init(spi_config); device_sync_call_init(&context->sync); + nano_sem_init(&context->sem); + nano_sem_give(&context->sem); dev->driver_api = &spi_qmsi_api; |