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spi: pic32: Convert to use GPIO descriptors 

The driver already relies on the core looking up GPIO lines
from the core, so this is trivial to switch over to using
GPIO descriptors.

Cc: Purna Chandra Mandal <purna.mandal@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220122004846.374930-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2022-01-22 01:48:46 +01:00 committed by Mark Brown
parent 2818824ced
commit 99407f11b5
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GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 5 deletions
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9
drivers/spi/spi-pic32.c
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@ -591,18 +591,16 @@ static int pic32_spi_setup(struct spi_device *spi)
* unreliable/erroneous SPI transactions.
* To avoid that we will always handle /CS by toggling GPIO.
*/
if (!gpio_is_valid(spi->cs_gpio))
if (!spi->cs_gpiod)
return -EINVAL;
gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
return 0;
}
static void pic32_spi_cleanup(struct spi_device *spi)
{
/* de-activate cs-gpio */
gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
/* de-activate cs-gpio, gpiolib will handle inversion */
gpiod_direction_output(spi->cs_gpiod, 0);
}
static int pic32_spi_dma_prep(struct pic32_spi *pic32s, struct device *dev)
@ -784,6 +782,7 @@ static int pic32_spi_probe(struct platform_device *pdev)
master->unprepare_message = pic32_spi_unprepare_message;
master->prepare_transfer_hardware = pic32_spi_prepare_hardware;
master->unprepare_transfer_hardware = pic32_spi_unprepare_hardware;
master->use_gpio_descriptors = true;
/* optional DMA support */
ret = pic32_spi_dma_prep(pic32s, &pdev->dev);