projects
/
platform
/
kernel
/
linux-starfive.git
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
e884a13
)
spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode
author
Dmitry Baryshkov
<dmitry.baryshkov@linaro.org>
Thu, 29 Jun 2023 09:58:47 +0000
(12:58 +0300)
committer
Mark Brown
<broonie@kernel.org>
Thu, 29 Jun 2023 10:33:48 +0000
(11:33 +0100)
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>
drivers/spi/spi-geni-qcom.c
patch
|
blob
|
history
diff --git
a/drivers/spi/spi-geni-qcom.c
b/drivers/spi/spi-geni-qcom.c
index
08672a9
..
d6cee86
100644
(file)
--- a/
drivers/spi/spi-geni-qcom.c
+++ b/
drivers/spi/spi-geni-qcom.c
@@
-1100,6
+1100,12
@@
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;