[PATCH v2 12/15] drm/vc4: hdmi: Don't register the CEC adapter if there's no interrupts
From: Maxime Ripard <hidden>
Date: 2021-01-11 14:25:38
Also in:
dri-devel, linux-media, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for vc4, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Dave Stevenson, Linus Torvalds
We introduced the BCM2711 support to the vc4 HDMI controller with 5.10, but this was lacking any of the interrupts of the CEC controller so we have to deal with the backward compatibility. Do so by simply ignoring the CEC setup if the DT doesn't have the interrupts property. Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Maxime Ripard <redacted> --- drivers/gpu/drm/vc4/vc4_hdmi.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 5a606b6f2917..eee9751009c2 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c@@ -1667,9 +1667,15 @@ static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi) { struct cec_connector_info conn_info; struct platform_device *pdev = vc4_hdmi->pdev; + struct device *dev = &pdev->dev; u32 value; int ret; + if (!of_find_property(dev->of_node, "interrupts", NULL)) { + dev_warn(dev, "'interrupts' DT property is missing, no CEC\n"); + return 0; + } + vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops, vc4_hdmi, "vc4", CEC_CAP_DEFAULTS |
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel