[PATCH 05/21] drm/omap: connector-hdmi: Convert to the GPIO descriptors API

[Sebastian Reichel]

Hi,

On Wed, Jun 06, 2018 at 12:36:34PM +0300, Laurent Pinchart wrote:
> The GPIO descriptor API is favoured over the plain GPIO API for consumer
> drivers. Using it simplifies the driver code.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel at collabora.co.uk>

-- Sebastian

>  drivers/gpu/drm/omapdrm/displays/connector-hdmi.c | 57 ++++++++---------------
>  1 file changed, 20 insertions(+), 37 deletions(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> index e9878da5bfdb..d39480b8cf6b 100644
> --- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> +++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> @@ -10,12 +10,10 @@
>   */
>  
>  #include <linux/gpio/consumer.h>
> -#include <linux/slab.h>
>  #include <linux/module.h>
> -#include <linux/platform_device.h>
> -#include <linux/of.h>
> -#include <linux/of_gpio.h>
>  #include <linux/mutex.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
>  
>  #include <drm/drm_edid.h>
>  
> @@ -46,7 +44,7 @@ struct panel_drv_data {
>  
>  	struct videomode vm;
>  
> -	int hpd_gpio;
> +	struct gpio_desc *hpd_gpio;
>  };
>  
>  #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
> @@ -143,8 +141,8 @@ static bool hdmic_detect(struct omap_dss_device *dssdev)
>  	struct omap_dss_device *src = dssdev->src;
>  	bool connected;
>  
> -	if (gpio_is_valid(ddata->hpd_gpio))
> -		connected = gpio_get_value_cansleep(ddata->hpd_gpio);
> +	if (ddata->hpd_gpio)
> +		connected = gpiod_get_value_cansleep(ddata->hpd_gpio);
>  	else
>  		connected = src->ops->hdmi.detect(src);
>  	if (!connected && src->ops->hdmi.lost_hotplug)
> @@ -160,7 +158,7 @@ static int hdmic_register_hpd_cb(struct omap_dss_device *dssdev,
>  	struct panel_drv_data *ddata = to_panel_data(dssdev);
>  	struct omap_dss_device *src = dssdev->src;
>  
> -	if (gpio_is_valid(ddata->hpd_gpio)) {
> +	if (ddata->hpd_gpio) {
>  		mutex_lock(&ddata->hpd_lock);
>  		ddata->hpd_cb = cb;
>  		ddata->hpd_cb_data = cb_data;
> @@ -178,7 +176,7 @@ static void hdmic_unregister_hpd_cb(struct omap_dss_device *dssdev)
>  	struct panel_drv_data *ddata = to_panel_data(dssdev);
>  	struct omap_dss_device *src = dssdev->src;
>  
> -	if (gpio_is_valid(ddata->hpd_gpio)) {
> +	if (ddata->hpd_gpio) {
>  		mutex_lock(&ddata->hpd_lock);
>  		ddata->hpd_cb = NULL;
>  		ddata->hpd_cb_data = NULL;
> @@ -193,7 +191,7 @@ static void hdmic_enable_hpd(struct omap_dss_device *dssdev)
>  	struct panel_drv_data *ddata = to_panel_data(dssdev);
>  	struct omap_dss_device *src = dssdev->src;
>  
> -	if (gpio_is_valid(ddata->hpd_gpio)) {
> +	if (ddata->hpd_gpio) {
>  		mutex_lock(&ddata->hpd_lock);
>  		ddata->hpd_enabled = true;
>  		mutex_unlock(&ddata->hpd_lock);
> @@ -207,7 +205,7 @@ static void hdmic_disable_hpd(struct omap_dss_device *dssdev)
>  	struct panel_drv_data *ddata = to_panel_data(dssdev);
>  	struct omap_dss_device *src = dssdev->src;
>  
> -	if (gpio_is_valid(ddata->hpd_gpio)) {
> +	if (ddata->hpd_gpio) {
>  		mutex_lock(&ddata->hpd_lock);
>  		ddata->hpd_enabled = false;
>  		mutex_unlock(&ddata->hpd_lock);
> @@ -272,26 +270,11 @@ static irqreturn_t hdmic_hpd_isr(int irq, void *data)
>  	return IRQ_HANDLED;
>  }
>  
> -static int hdmic_probe_of(struct platform_device *pdev)
> -{
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> -	struct device_node *node = pdev->dev.of_node;
> -	int gpio;
> -
> -	/* HPD GPIO */
> -	gpio = of_get_named_gpio(node, "hpd-gpios", 0);
> -	if (gpio_is_valid(gpio))
> -		ddata->hpd_gpio = gpio;
> -	else
> -		ddata->hpd_gpio = -ENODEV;
> -
> -	return 0;
> -}
> -
>  static int hdmic_probe(struct platform_device *pdev)
>  {
>  	struct panel_drv_data *ddata;
>  	struct omap_dss_device *dssdev;
> +	struct gpio_desc *gpio;
>  	int r;
>  
>  	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
> @@ -301,20 +284,20 @@ static int hdmic_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, ddata);
>  	ddata->dev = &pdev->dev;
>  
> -	r = hdmic_probe_of(pdev);
> -	if (r)
> -		return r;
> -
>  	mutex_init(&ddata->hpd_lock);
>  
> -	if (gpio_is_valid(ddata->hpd_gpio)) {
> -		r = devm_gpio_request_one(&pdev->dev, ddata->hpd_gpio,
> -				GPIOF_DIR_IN, "hdmi_hpd");
> -		if (r)
> -			return r;
> +	/* HPD GPIO */
> +	gpio = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN);
> +	if (IS_ERR(gpio)) {
> +		dev_err(&pdev->dev, "failed to parse HPD gpio\n");
> +		return PTR_ERR(gpio);
> +	}
> +
> +	ddata->hpd_gpio = gpio;
>  
> +	if (ddata->hpd_gpio) {
>  		r = devm_request_threaded_irq(&pdev->dev,
> -				gpio_to_irq(ddata->hpd_gpio),
> +				gpiod_to_irq(ddata->hpd_gpio),
>  				NULL, hdmic_hpd_isr,
>  				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
>  				IRQF_ONESHOT,
> -- 
> Regards,
> 
> Laurent Pinchart
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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