fbdev: omapfb: encoder-tfp410: switch to using gpiod API

Switch the driver from legacy gpio API that is deprecated to the newer
gpiod API that respects line polarities described in ACPI/DT.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/video/fbdev/omap2/omapfb/displays/encoder-tfp410.c b/drivers/video/fbdev/omap2/omapfb/displays/encoder-tfp410.c
index 09a59bd..7bac420 100644 (file)
--- a/drivers/video/fbdev/omap2/omapfb/displays/encoder-tfp410.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/encoder-tfp410.c
@@ -6,11 +6,12 @@
  * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
  */
 
-#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
-#include <linux/of_gpio.h>
 
 #include <video/omapfb_dss.h>
 
@@ -18,7 +19,8 @@ struct panel_drv_data {
        struct omap_dss_device dssdev;
        struct omap_dss_device *in;
 
-       int pd_gpio;
+       struct gpio_desc *pd_gpio;
+
        int data_lines;
 
        struct omap_video_timings timings;
@@ -86,8 +88,8 @@ static int tfp410_enable(struct omap_dss_device *dssdev)
        if (r)
                return r;
 
-       if (gpio_is_valid(ddata->pd_gpio))
-               gpio_set_value_cansleep(ddata->pd_gpio, 1);
+       if (ddata->pd_gpio)
+               gpiod_set_value_cansleep(ddata->pd_gpio, 0);
 
        dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 
@@ -102,8 +104,8 @@ static void tfp410_disable(struct omap_dss_device *dssdev)
        if (!omapdss_device_is_enabled(dssdev))
                return;
 
-       if (gpio_is_valid(ddata->pd_gpio))
-               gpio_set_value_cansleep(ddata->pd_gpio, 0);
+       if (ddata->pd_gpio)
+               gpiod_set_value_cansleep(ddata->pd_gpio, 1);
 
        in->ops.dpi->disable(in);
 
@@ -162,33 +164,6 @@ static const struct omapdss_dvi_ops tfp410_dvi_ops = {
        .get_timings    = tfp410_get_timings,
 };
 
-static int tfp410_probe_of(struct platform_device *pdev)
-{
-       struct panel_drv_data *ddata = platform_get_drvdata(pdev);
-       struct device_node *node = pdev->dev.of_node;
-       struct omap_dss_device *in;
-       int gpio;
-
-       gpio = of_get_named_gpio(node, "powerdown-gpios", 0);
-
-       if (gpio_is_valid(gpio) || gpio == -ENOENT) {
-               ddata->pd_gpio = gpio;
-       } else {
-               dev_err(&pdev->dev, "failed to parse PD gpio\n");
-               return gpio;
-       }
-
-       in = omapdss_of_find_source_for_first_ep(node);
-       if (IS_ERR(in)) {
-               dev_err(&pdev->dev, "failed to find video source\n");
-               return PTR_ERR(in);
-       }
-
-       ddata->in = in;
-
-       return 0;
-}
-
 static int tfp410_probe(struct platform_device *pdev)
 {
        struct panel_drv_data *ddata;
@@ -204,18 +179,21 @@ static int tfp410_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, ddata);
 
-       r = tfp410_probe_of(pdev);
-       if (r)
+       ddata->pd_gpio = devm_gpiod_get_optional(&pdev->dev, "powerdown",
+                                                GPIOD_OUT_HIGH);
+       r = PTR_ERR_OR_ZERO(ddata->pd_gpio);
+       if (r) {
+               dev_err(&pdev->dev, "Failed to request PD GPIO: %d\n", r);
                return r;
+       }
+
+       gpiod_set_consumer_name(ddata->pd_gpio, "tfp410 PD");
 
-       if (gpio_is_valid(ddata->pd_gpio)) {
-               r = devm_gpio_request_one(&pdev->dev, ddata->pd_gpio,
-                               GPIOF_OUT_INIT_LOW, "tfp410 PD");
-               if (r) {
-                       dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",
-                                       ddata->pd_gpio);
-                       goto err_gpio;
-               }
+       ddata->in = omapdss_of_find_source_for_first_ep(pdev->dev.of_node);
+       r = PTR_ERR_OR_ZERO(ddata->in);
+       if (r) {
+               dev_err(&pdev->dev, "failed to find video source: %d\n", r);
+               return r;
        }
 
        dssdev = &ddata->dssdev;
@@ -235,7 +213,6 @@ static int tfp410_probe(struct platform_device *pdev)
 
        return 0;
 err_reg:
-err_gpio:
        omap_dss_put_device(ddata->in);
        return r;
 }