Commit 8913e1ae authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: dpaux: Populate AUX bus 



The DPAUX hardware block exposes an DP AUX interface that provides
access to an AUX bus and the devices on that bus. Use the DP AUX bus
infrastructure that was recently introduced to probe devices on this
bus from DT.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 16693c1b

drivers/gpu/drm/tegra/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ config DRM_TEGRA 
	depends on COMMON_CLK

	depends on DRM

	depends on OF

	select DRM_DP_AUX_BUS

	select DRM_KMS_HELPER

	select DRM_MIPI_DSI

	select DRM_PANEL

drivers/gpu/drm/tegra/dpaux.c

+7 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/workqueue.h>



#include <drm/drm_dp_helper.h>

#include <drm/drm_dp_aux_bus.h>

#include <drm/drm_panel.h>



#include "dp.h"
@@ -570,6 +571,12 @@ static int tegra_dpaux_probe(struct platform_device *pdev) 
	list_add_tail(&dpaux->list, &dpaux_list);

	mutex_unlock(&dpaux_lock);



	err = devm_of_dp_aux_populate_ep_devices(&dpaux->aux);

	if (err < 0) {

		dev_err(dpaux->dev, "failed to populate AUX bus: %d\n", err);

		return err;

	}



	return 0;

}