Hi,
On Wed, Jun 06, 2018 at 12:36:36PM +0300, Laurent Pinchart wrote:
> The GPIO descriptor API is favoured over the plain GPIO API for consumer
> drivers. Using it simplifies the driver code.
>
> The reset GPIO is mandatory, so drop conditional tests through the
> driver. The qvga GPIO is unused, so drop it completely.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx>
-- Sebastian
> .../drm/omapdrm/displays/panel-nec-nl8048hl11.c | 54 +++++-----------------
> 1 file changed, 11 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> index b4dba55b678b..767ffd2fa0f4 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> @@ -11,11 +11,10 @@
> * (at your option) any later version.
> */
>
> -#include <linux/module.h>
> #include <linux/delay.h>
> -#include <linux/spi/spi.h>
> #include <linux/gpio/consumer.h>
> -#include <linux/of_gpio.h>
> +#include <linux/module.h>
> +#include <linux/spi/spi.h>
>
> #include "../dss/omapdss.h"
>
> @@ -24,8 +23,7 @@ struct panel_drv_data {
>
> struct videomode vm;
>
> - int res_gpio;
> - int qvga_gpio;
> + struct gpio_desc *res_gpio;
>
> struct spi_device *spi;
> };
> @@ -140,8 +138,7 @@ static int nec_8048_enable(struct omap_dss_device *dssdev)
> if (r)
> return r;
>
> - if (gpio_is_valid(ddata->res_gpio))
> - gpio_set_value_cansleep(ddata->res_gpio, 1);
> + gpiod_set_value_cansleep(ddata->res_gpio, 1);
>
> dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
>
> @@ -156,8 +153,7 @@ static void nec_8048_disable(struct omap_dss_device *dssdev)
> if (!omapdss_device_is_enabled(dssdev))
> return;
>
> - if (gpio_is_valid(ddata->res_gpio))
> - gpio_set_value_cansleep(ddata->res_gpio, 0);
> + gpiod_set_value_cansleep(ddata->res_gpio, 0);
>
> src->ops->disable(src);
>
> @@ -203,29 +199,11 @@ static const struct omap_dss_driver nec_8048_ops = {
> .check_timings = nec_8048_check_timings,
> };
>
> -static int nec_8048_probe_of(struct spi_device *spi)
> -{
> - struct device_node *node = spi->dev.of_node;
> - struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
> - int gpio;
> -
> - gpio = of_get_named_gpio(node, "reset-gpios", 0);
> - if (!gpio_is_valid(gpio)) {
> - dev_err(&spi->dev, "failed to parse enable gpio\n");
> - return gpio;
> - }
> - ddata->res_gpio = gpio;
> -
> - /* XXX the panel spec doesn't mention any QVGA pin?? */
> - ddata->qvga_gpio = -ENOENT;
> -
> - return 0;
> -}
> -
> static int nec_8048_probe(struct spi_device *spi)
> {
> struct panel_drv_data *ddata;
> struct omap_dss_device *dssdev;
> + struct gpio_desc *gpio;
> int r;
>
> dev_dbg(&spi->dev, "%s\n", __func__);
> @@ -249,23 +227,13 @@ static int nec_8048_probe(struct spi_device *spi)
>
> ddata->spi = spi;
>
> - r = nec_8048_probe_of(spi);
> - if (r)
> - return r;
> -
> - if (gpio_is_valid(ddata->qvga_gpio)) {
> - r = devm_gpio_request_one(&spi->dev, ddata->qvga_gpio,
> - GPIOF_OUT_INIT_HIGH, "lcd QVGA");
> - if (r)
> - return r;
> + gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
> + if (IS_ERR(gpio)) {
> + dev_err(&spi->dev, "failed to get reset gpio\n");
> + return PTR_ERR(gpio);
> }
>
> - if (gpio_is_valid(ddata->res_gpio)) {
> - r = devm_gpio_request_one(&spi->dev, ddata->res_gpio,
> - GPIOF_OUT_INIT_LOW, "lcd RES");
> - if (r)
> - return r;
> - }
> + ddata->res_gpio = gpio;
>
> ddata->vm = nec_8048_panel_vm;
>
> --
> Regards,
>
> Laurent Pinchart
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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