drm/omap: tpd12s015: CT_CP_HPD as optional gpio

tpd12s015 HW has LS_OE, CT_CP_HPD and HPD gpios. Out of these gpios,
driver only handled LS_OE as optional. The CT_CP_HPD gpio should also
be treated as optional gpio as it is just a power saving feature. Some
boards hardwire this gpio to be always enable. In this patch, all access
to CT_CP_HPD gpio is made optional.

Signed-off-by: Manisha Agrawal <manisha.agrawal@ti.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
index 7fa80f5..916a899 100644 (file)
--- a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
+++ b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
@@ -236,7 +236,7 @@ static int tpd_probe(struct platform_device *pdev)
                return r;
 
 
-       gpio = devm_gpiod_get_index(&pdev->dev, NULL, 0,
+       gpio = devm_gpiod_get_index_optional(&pdev->dev, NULL, 0,
                 GPIOD_OUT_LOW);
        if (IS_ERR(gpio))
                goto err_gpio;