This is a note to let you know that I've just added the patch titled
spi: davinci: invoke chipselect callback
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-davinci-invoke-chipselect-callback.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 10211e4dc1a27a7610a93fe760ec52ed0c12f327
Author: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@xxxxxxxxx>
Date: Tue Aug 24 11:25:56 2021 +0200
spi: davinci: invoke chipselect callback
[ Upstream commit ea4ab99cb58cc9f8d64c0961ff9a059825f304cf ]
Davinci needs to configure chipselect on transfer.
Fixes: 4a07b8bcd503 ("spi: bitbang: Make chipselect callback optional")
Signed-off-by: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@xxxxxxxxx>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Link: https://lore.kernel.org/r/735fb7b0-82aa-5b9b-85e4-53f0c348cc0e@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index e114e6fe5ea5..d112c2cac042 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -213,12 +213,6 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value)
* line for the controller
*/
if (spi->cs_gpiod) {
- /*
- * FIXME: is this code ever executed? This host does not
- * set SPI_MASTER_GPIO_SS so this chipselect callback should
- * not get called from the SPI core when we are using
- * GPIOs for chip select.
- */
if (value == BITBANG_CS_ACTIVE)
gpiod_set_value(spi->cs_gpiod, 1);
else
@@ -945,7 +939,7 @@ static int davinci_spi_probe(struct platform_device *pdev)
master->bus_num = pdev->id;
master->num_chipselect = pdata->num_chipselect;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(2, 16);
- master->flags = SPI_MASTER_MUST_RX;
+ master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_GPIO_SS;
master->setup = davinci_spi_setup;
master->cleanup = davinci_spi_cleanup;
master->can_dma = davinci_spi_can_dma;
