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, 13 insertions, 13 deletions

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 73f80c8ac2ff..7f06305e16cb 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -327,10 +327,10 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 	int chip_select;
 	u32 mr;
 
-	if (spi->cs_gpiod)
+	if (spi_get_csgpiod(spi, 0))
 		chip_select = as->native_cs_for_gpio;
 	else
-		chip_select = spi->chip_select;
+		chip_select = spi_get_chipselect(spi, 0);
 
 	if (atmel_spi_is_v2(as)) {
 		spi_writel(as, CSR0 + 4 * chip_select, asd->csr);
@@ -378,10 +378,10 @@ static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi)
 	int chip_select;
 	u32 mr;
 
-	if (spi->cs_gpiod)
+	if (spi_get_csgpiod(spi, 0))
 		chip_select = as->native_cs_for_gpio;
 	else
-		chip_select = spi->chip_select;
+		chip_select = spi_get_chipselect(spi, 0);
 
 	/* only deactivate *this* device; sometimes transfers to
 	 * another device may be active when this routine is called.
@@ -394,7 +394,7 @@ static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi)
 
 	dev_dbg(&spi->dev, "DEactivate NPCS, mr %08x\n", mr);
 
-	if (!spi->cs_gpiod)
+	if (!spi_get_csgpiod(spi, 0))
 		spi_writel(as, CR, SPI_BIT(LASTXFER));
 }
 
@@ -800,10 +800,10 @@ static int atmel_spi_set_xfer_speed(struct atmel_spi *as,
 	unsigned long		bus_hz;
 	int chip_select;
 
-	if (spi->cs_gpiod)
+	if (spi_get_csgpiod(spi, 0))
 		chip_select = as->native_cs_for_gpio;
 	else
-		chip_select = spi->chip_select;
+		chip_select = spi_get_chipselect(spi, 0);
 
 	/* v1 chips start out at half the peripheral bus speed. */
 	bus_hz = as->spi_clk;
@@ -1189,7 +1189,7 @@ static int atmel_spi_setup(struct spi_device *spi)
 	as = spi_controller_get_devdata(spi->controller);
 
 	/* see notes above re chipselect */
-	if (!spi->cs_gpiod && (spi->mode & SPI_CS_HIGH)) {
+	if (!spi_get_csgpiod(spi, 0) && (spi->mode & SPI_CS_HIGH)) {
 		dev_warn(&spi->dev, "setup: non GPIO CS can't be active-high\n");
 		return -EINVAL;
 	}
@@ -1201,16 +1201,16 @@ static int atmel_spi_setup(struct spi_device *spi)
 	 */
 	initialize_native_cs_for_gpio(as);
 
-	if (spi->cs_gpiod && as->native_cs_free) {
+	if (spi_get_csgpiod(spi, 0) && as->native_cs_free) {
 		dev_err(&spi->dev,
 			"No native CS available to support this GPIO CS\n");
 		return -EBUSY;
 	}
 
-	if (spi->cs_gpiod)
+	if (spi_get_csgpiod(spi, 0))
 		chip_select = as->native_cs_for_gpio;
 	else
-		chip_select = spi->chip_select;
+		chip_select = spi_get_chipselect(spi, 0);
 
 	csr = SPI_BF(BITS, bits - 8);
 	if (spi->mode & SPI_CPOL)
@@ -1218,7 +1218,7 @@ static int atmel_spi_setup(struct spi_device *spi)
 	if (!(spi->mode & SPI_CPHA))
 		csr |= SPI_BIT(NCPHA);
 
-	if (!spi->cs_gpiod)
+	if (!spi_get_csgpiod(spi, 0))
 		csr |= SPI_BIT(CSAAT);
 	csr |= SPI_BF(DLYBS, 0);
 
@@ -1244,7 +1244,7 @@ static int atmel_spi_setup(struct spi_device *spi)
 
 	dev_dbg(&spi->dev,
 		"setup: bpw %u mode 0x%x -> csr%d %08x\n",
-		bits, spi->mode, spi->chip_select, csr);
+		bits, spi->mode, spi_get_chipselect(spi, 0), csr);
 
 	if (!atmel_spi_is_v2(as))
 		spi_writel(as, CSR0 + 4 * chip_select, csr);