spi: Replace all spi->chip_select and spi->cs_gpiod references with function call

Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod
members of struct spi_device to be an array. But changing the type of these
members to array would break the spi driver functionality. To make the
transition smoother introduced four new APIs to get/set the
spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and
spi->cs_gpiod references with get or set API calls.
While adding multi-cs support in further patches the chip_select & cs_gpiod
members of the spi_device structure would be converted to arrays & the
"idx" parameter of the APIs would be used as array index i.e.,
spi->chip_select[idx] & spi->cs_gpiod[idx] respectively.

Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de> # Rockchip drivers
Reviewed-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org> # Aspeed driver
Reviewed-by: Dhruva Gole <d-gole@ti.com> # SPI Cadence QSPI
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> # spi-stm32-qspi
Acked-by: William Zhang <william.zhang@broadcom.com> # bcm63xx-hsspi driver
Reviewed-by: Serge Semin <fancer.lancer@gmail.com> # DW SSI part
Link: https://lore.kernel.org/r/167847070432.26.15076794204368669839@mailman-core.alsa-project.org
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c
index bacc54836959..8ade61e5ebc0 100644
--- a/drivers/spi/spi-fsl-qspi.c
+++ b/drivers/spi/spi-fsl-qspi.c
@@ -528,7 +528,7 @@ static void fsl_qspi_select_mem(struct fsl_qspi *q, struct spi_device *spi)
 	unsigned long rate = spi->max_speed_hz;
 	int ret;
 
-	if (q->selected == spi->chip_select)
+	if (q->selected == spi_get_chipselect(spi, 0))
 		return;
 
 	if (needs_4x_clock(q))
@@ -544,7 +544,7 @@ static void fsl_qspi_select_mem(struct fsl_qspi *q, struct spi_device *spi)
 	if (ret)
 		return;
 
-	q->selected = spi->chip_select;
+	q->selected = spi_get_chipselect(spi, 0);
 
 	fsl_qspi_invalidate(q);
 }
@@ -823,7 +823,7 @@ static const char *fsl_qspi_get_name(struct spi_mem *mem)
 
 	name = devm_kasprintf(dev, GFP_KERNEL,
 			      "%s-%d", dev_name(q->dev),
-			      mem->spi->chip_select);
+			      spi_get_chipselect(mem->spi, 0));
 
 	if (!name) {
 		dev_err(dev, "failed to get memory for custom flash name\n");