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[v2,05/13] mtd: devices: Replace all spi->chip_select and spi->cs_gpiod references with function call

Message ID 20230119185342.2093323-6-amit.kumar-mahapatra@amd.com (mailing list archive)
State Handled Elsewhere
Headers show
Series spi: Add support for stacked/parallel memories | expand

Commit Message

Mahapatra, Amit Kumar Jan. 19, 2023, 6:53 p.m. UTC
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>
---
 drivers/mtd/devices/mtd_dataflash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Michal Simek Jan. 23, 2023, 12:47 p.m. UTC | #1
On 1/19/23 19:53, Amit Kumar Mahapatra wrote:
> 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>
> ---
>   drivers/mtd/devices/mtd_dataflash.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
> index 3bbaa590c768..1d3b2a94581f 100644
> --- a/drivers/mtd/devices/mtd_dataflash.c
> +++ b/drivers/mtd/devices/mtd_dataflash.c
> @@ -639,7 +639,7 @@ static int add_dataflash_otp(struct spi_device *spi, char *name, int nr_pages,
>   
>   	/* name must be usable with cmdlinepart */
>   	sprintf(priv->name, "spi%d.%d-%s",
> -			spi->master->bus_num, spi->chip_select,
> +			spi->master->bus_num, spi_get_chipselect(spi, 0),
>   			name);
>   
>   	device = &priv->mtd;


Reviewed-by: Michal Simek <michal.simek@amd.com>

Thanks,
Michal
diff mbox series

Patch

diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 3bbaa590c768..1d3b2a94581f 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -639,7 +639,7 @@  static int add_dataflash_otp(struct spi_device *spi, char *name, int nr_pages,
 
 	/* name must be usable with cmdlinepart */
 	sprintf(priv->name, "spi%d.%d-%s",
-			spi->master->bus_num, spi->chip_select,
+			spi->master->bus_num, spi_get_chipselect(spi, 0),
 			name);
 
 	device = &priv->mtd;