mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 07:04:24 +00:00
Code Issues Releases Wiki Activity

spi: mt65xx: Convert to GPIO descriptors

Browse source 
The MT65xx driver was already relying on the core to get some
GPIO line numbers so it can be (hopefully) trivially converted
to use descriptors instead.

Cc: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Cc: Mason Zhang <Mason.Zhang@mediatek.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Peter Hess <peter.hess@ph-home.de>
Cc: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220122003302.374304-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2022-01-22 01:33:02 +01:00 committed by Mark Brown
parent 31455bbda2
commit 1a5a87d541
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 6 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/spi/spi-mt65xx.c
View file

@ -12,7 +12,7 @@
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/platform_data/spi-mt65xx.h>
#include <linux/pm_runtime.h>
@ -605,8 +605,9 @@ static int mtk_spi_setup(struct spi_device *spi)
if (!spi->controller_data)
spi->controller_data = (void *)&mtk_default_chip_info;
if (mdata->dev_comp->need_pad_sel && gpio_is_valid(spi->cs_gpio))
gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
if (mdata->dev_comp->need_pad_sel && spi->cs_gpiod)
/* CS de-asserted, gpiolib will handle inversion */
gpiod_direction_output(spi->cs_gpiod, 0);
return 0;
}
@ -730,6 +731,7 @@ static int mtk_spi_probe(struct platform_device *pdev)
master->can_dma = mtk_spi_can_dma;
master->setup = mtk_spi_setup;
master->set_cs_timing = mtk_spi_set_hw_cs_timing;
master->use_gpio_descriptors = true;
of_id = of_match_node(mtk_spi_of_match, pdev->dev.of_node);
if (!of_id) {
@ -853,25 +855,12 @@ static int mtk_spi_probe(struct platform_device *pdev)
goto err_disable_runtime_pm;
}
if (!master->cs_gpios && master->num_chipselect > 1) {
if (!master->cs_gpiods && master->num_chipselect > 1) {
dev_err(&pdev->dev,
"cs_gpios not specified and num_chipselect > 1\n");
ret = -EINVAL;
goto err_disable_runtime_pm;
}
if (master->cs_gpios) {
for (i = 0; i < master->num_chipselect; i++) {
ret = devm_gpio_request(&pdev->dev,
master->cs_gpios[i],
dev_name(&pdev->dev));
if (ret) {
dev_err(&pdev->dev,
"can't get CS GPIO %i\n", i);
goto err_disable_runtime_pm;
}
}
}
}
if (mdata->dev_comp->dma_ext)