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| author |   Thierry Reding <treding@nvidia.com> | 2021-12-20 11:28:22 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2022-02-23 13:00:37 +0100 |
| commit | 8913e1aea4b32a866343b14e565c62cec54f3f78 (patch) | |
| tree | 37cf6488e46c588e11c2564b73f0dad27b6deacb | |
| parent | drm/tegra: Fix cast to restricted __le32 (diff) | |
| download | linux-dev-8913e1aea4b32a866343b14e565c62cec54f3f78.tar.xz linux-dev-8913e1aea4b32a866343b14e565c62cec54f3f78.zip | |
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: Thierry Reding <treding@nvidia.com>
| -rw-r--r-- | drivers/gpu/drm/tegra/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/dpaux.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig index 8cf5aeb9db6c..201f5175ecfe 100644 --- a/drivers/gpu/drm/tegra/Kconfig +++ b/drivers/gpu/drm/tegra/Kconfig @@ -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 diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 1f96e416fa08..d7a731d287d2 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -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; } |