diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-06-29 12:58:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-19 17:22:01 +0300 |
| commit | a252547c8920a5b790d609b28d1702a01ea8ff57 (patch) | |
| tree | 6ad1ca65200ede27ce4dec58ffc1516618e7450f /drivers/spi | |
| parent | 946edfb7d436df99e02d3d18bc8972b5542354d9 (diff) | |
| download | linux-a252547c8920a5b790d609b28d1702a01ea8ff57.tar.xz | |
spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode
[ Upstream commit d10005837be83906bbd2078c3b4f9dfcbd6c95b6 ]
The GPI DMA mode requires for TX DMA to be prepared. Force SPI core to
provide TX buffer even if the caller didn't provide one by setting the
SPI_CONTROLLER_MUST_TX flag.
Fixes: b59c122484ec ("spi: spi-geni-qcom: Add support for GPI dma")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230629095847.3648597-1-dmitry.baryshkov@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-geni-qcom.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index 689b94fc5570..7b76dcd11e2b 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -979,6 +979,12 @@ static int spi_geni_probe(struct platform_device *pdev) if (mas->cur_xfer_mode == GENI_SE_FIFO) spi->set_cs = spi_geni_set_cs; + /* + * TX is required per GSI spec, see setup_gsi_xfer(). + */ + if (mas->cur_xfer_mode == GENI_GPI_DMA) + spi->flags = SPI_CONTROLLER_MUST_TX; + ret = request_irq(mas->irq, geni_spi_isr, 0, dev_name(dev), spi); if (ret) goto spi_geni_release_dma; |