spi: davinci: invoke chipselect callback

[ Upstream commit ea4ab99 ]

Davinci needs to configure chipselect on transfer.

Fixes: 4a07b8b ("spi: bitbang: Make chipselect callback optional")
Signed-off-by: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Link: https://lore.kernel.org/r/735fb7b0-82aa-5b9b-85e4-53f0c348cc0e@nokia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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;