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Commit bbad6407 authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: Use GPIO descriptor API 



The legacy GPIO API has long been deprecated. Move the driver over to
the descriptor-based API, which allows us to get rid of some boilerplate
while at it.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 31fa25f1

drivers/gpu/drm/tegra/drm.h

+1 −2
Original line number Diff line number Diff line
@@ -127,8 +127,7 @@ struct tegra_output { 
	const struct edid *edid;

	struct cec_notifier *cec;

	unsigned int hpd_irq;

	int hpd_gpio;

	enum of_gpio_flags hpd_gpio_flags;

	struct gpio_desc *hpd_gpio;



	struct drm_encoder encoder;

	struct drm_connector connector;

drivers/gpu/drm/tegra/output.c

+19 −33
Original line number Diff line number Diff line
@@ -53,18 +53,11 @@ tegra_output_connector_detect(struct drm_connector *connector, bool force) 
	struct tegra_output *output = connector_to_output(connector);

	enum drm_connector_status status = connector_status_unknown;



	if (gpio_is_valid(output->hpd_gpio)) {

		if (output->hpd_gpio_flags & OF_GPIO_ACTIVE_LOW) {

			if (gpio_get_value(output->hpd_gpio) != 0)

	if (output->hpd_gpio) {

		if (gpiod_get_value(output->hpd_gpio) == 0)

			status = connector_status_disconnected;

		else

			status = connector_status_connected;

		} else {

			if (gpio_get_value(output->hpd_gpio) == 0)

				status = connector_status_disconnected;

			else

				status = connector_status_connected;

		}

	} else {

		if (!output->panel)

			status = connector_status_disconnected;
@@ -102,6 +95,7 @@ static irqreturn_t hpd_irq(int irq, void *data) 
int tegra_output_probe(struct tegra_output *output)

{

	struct device_node *ddc, *panel;

	unsigned long flags;

	int err, size;



	if (!output->of_node)
@@ -130,23 +124,18 @@ int tegra_output_probe(struct tegra_output *output) 
		of_node_put(ddc);

	}



	output->hpd_gpio = of_get_named_gpio_flags(output->of_node,

	output->hpd_gpio = devm_gpiod_get_from_of_node(output->dev,

						       output->of_node,

						       "nvidia,hpd-gpio", 0,

						   &output->hpd_gpio_flags);

	if (gpio_is_valid(output->hpd_gpio)) {

		unsigned long flags;



		err = gpio_request_one(output->hpd_gpio, GPIOF_DIR_IN,

						       GPIOD_IN,

						       "HDMI hotplug detect");

		if (err < 0) {

			dev_err(output->dev, "gpio_request_one(): %d\n", err);

			return err;

		}

	if (IS_ERR(output->hpd_gpio))

		return PTR_ERR(output->hpd_gpio);



		err = gpio_to_irq(output->hpd_gpio);

	if (output->hpd_gpio) {

		err = gpiod_to_irq(output->hpd_gpio);

		if (err < 0) {

			dev_err(output->dev, "gpio_to_irq(): %d\n", err);

			gpio_free(output->hpd_gpio);

			dev_err(output->dev, "gpiod_to_irq(): %d\n", err);

			return err;

		}
@@ -160,7 +149,6 @@ int tegra_output_probe(struct tegra_output *output) 
		if (err < 0) {

			dev_err(output->dev, "failed to request IRQ#%u: %d\n",

				output->hpd_irq, err);

			gpio_free(output->hpd_gpio);

			return err;

		}
@@ -186,10 +174,8 @@ void tegra_output_remove(struct tegra_output *output) 
	if (output->cec)

		cec_notifier_put(output->cec);



	if (gpio_is_valid(output->hpd_gpio)) {

	if (output->hpd_gpio)

		free_irq(output->hpd_irq, output);

		gpio_free(output->hpd_gpio);

	}



	if (output->ddc)

		put_device(&output->ddc->dev);
@@ -209,7 +195,7 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output) 
	 * The connector is now registered and ready to receive hotplug events

	 * so the hotplug interrupt can be enabled.

	 */

	if (gpio_is_valid(output->hpd_gpio))

	if (output->hpd_gpio)

		enable_irq(output->hpd_irq);



	return 0;
@@ -221,7 +207,7 @@ void tegra_output_exit(struct tegra_output *output) 
	 * The connector is going away, so the interrupt must be disabled to

	 * prevent the hotplug interrupt handler from potentially crashing.

	 */

	if (gpio_is_valid(output->hpd_gpio))

	if (output->hpd_gpio)

		disable_irq(output->hpd_irq);



	if (output->panel)