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, 6 insertions, 6 deletions

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index 29125af0afdb..2b6804aa6901 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -359,7 +359,7 @@ static int stm32_qspi_get_mode(u8 buswidth)
 static int stm32_qspi_send(struct spi_device *spi, const struct spi_mem_op *op)
 {
 	struct stm32_qspi *qspi = spi_controller_get_devdata(spi->master);
-	struct stm32_qspi_flash *flash = &qspi->flash[spi->chip_select];
+	struct stm32_qspi_flash *flash = &qspi->flash[spi_get_chipselect(spi, 0)];
 	u32 ccr, cr;
 	int timeout, err = 0, err_poll_status = 0;
 
@@ -564,7 +564,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl,
 	struct spi_mem_op op;
 	int ret = 0;
 
-	if (!spi->cs_gpiod)
+	if (!spi_get_csgpiod(spi, 0))
 		return -EOPNOTSUPP;
 
 	ret = pm_runtime_resume_and_get(qspi->dev);
@@ -573,7 +573,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl,
 
 	mutex_lock(&qspi->lock);
 
-	gpiod_set_value_cansleep(spi->cs_gpiod, true);
+	gpiod_set_value_cansleep(spi_get_csgpiod(spi, 0), true);
 
 	list_for_each_entry(transfer, &msg->transfers, transfer_list) {
 		u8 dummy_bytes = 0;
@@ -626,7 +626,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl,
 	}
 
 end_of_transfer:
-	gpiod_set_value_cansleep(spi->cs_gpiod, false);
+	gpiod_set_value_cansleep(spi_get_csgpiod(spi, 0), false);
 
 	mutex_unlock(&qspi->lock);
 
@@ -669,8 +669,8 @@ static int stm32_qspi_setup(struct spi_device *spi)
 
 	presc = DIV_ROUND_UP(qspi->clk_rate, spi->max_speed_hz) - 1;
 
-	flash = &qspi->flash[spi->chip_select];
-	flash->cs = spi->chip_select;
+	flash = &qspi->flash[spi_get_chipselect(spi, 0)];
+	flash->cs = spi_get_chipselect(spi, 0);
 	flash->presc = presc;
 
 	mutex_lock(&qspi->lock);