From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH 02/32] drm/tegra: dp: Add drm_dp_link_reset() implementation
Date: Thu, 24 Oct 2019 18:45:04 +0200 [thread overview]
Message-ID: <20191024164534.132764-3-thierry.reding@gmail.com> (raw)
In-Reply-To: <20191024164534.132764-1-thierry.reding@gmail.com>
From: Thierry Reding <treding@nvidia.com>
Subsequent patches will add non-volatile fields to struct drm_dp_link,
so introduce a function to zero out only the volatile fields.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
drivers/gpu/drm/tegra/dp.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c
index 50ba967ebcbd..c19060b8753a 100644
--- a/drivers/gpu/drm/tegra/dp.c
+++ b/drivers/gpu/drm/tegra/dp.c
@@ -8,6 +8,17 @@
#include "dp.h"
+static void drm_dp_link_reset(struct drm_dp_link *link)
+{
+ if (!link)
+ return;
+
+ link->revision = 0;
+ link->rate = 0;
+ link->num_lanes = 0;
+ link->capabilities = 0;
+}
+
/**
* drm_dp_link_probe() - probe a DisplayPort link for capabilities
* @aux: DisplayPort AUX channel
@@ -24,7 +35,7 @@ int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link)
u8 values[3];
int err;
- memset(link, 0, sizeof(*link));
+ drm_dp_link_reset(link);
err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values));
if (err < 0)
--
2.23.0
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next prev parent reply other threads:[~2019-10-24 16:45 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 16:45 [PATCH 00/32] drm/tegra: Add DisplayPort support Thierry Reding
2019-10-24 16:45 ` [PATCH 01/32] drm/tegra: Add missing kerneldoc for struct drm_dp_link Thierry Reding
2019-10-24 16:45 ` Thierry Reding [this message]
2019-10-24 16:45 ` [PATCH 03/32] drm/tegra: dp: Track link capabilities alongside settings Thierry Reding
2019-10-24 16:45 ` [PATCH 04/32] drm/tegra: dp: Turn link capabilities into booleans Thierry Reding
2019-10-24 16:45 ` [PATCH 05/32] drm/tegra: dp: Probe link using existing parsing helpers Thierry Reding
2019-10-24 16:45 ` [PATCH 06/32] drm/tegra: dp: Read fast training capability from link Thierry Reding
2019-10-24 16:45 ` [PATCH 07/32] drm/tegra: dp: Read TPS3 capability from sink Thierry Reding
2019-10-24 16:45 ` [PATCH 08/32] drm/tegra: dp: Read channel coding " Thierry Reding
2019-10-24 16:45 ` [PATCH 09/32] drm/tegra: dp: Read alternate scrambler reset " Thierry Reding
2019-10-24 16:45 ` [PATCH 10/32] drm/tegra: dp: Read eDP version from DPCD Thierry Reding
2019-10-24 16:45 ` [PATCH 11/32] drm/tegra: dp: Read AUX read interval " Thierry Reding
2019-10-24 16:45 ` [PATCH 12/32] drm/tegra: dp: Set channel coding on link configuration Thierry Reding
2019-10-24 16:45 ` [PATCH 13/32] drm/tegra: dp: Enable alternate scrambler reset when supported Thierry Reding
2019-10-24 16:45 ` [PATCH 14/32] drm/tegra: dp: Add drm_dp_link_choose() helper Thierry Reding
2019-10-24 16:45 ` [PATCH 15/32] drm/tegra: dp: Add support for eDP link rates Thierry Reding
2019-10-24 16:45 ` [PATCH 16/32] drm/tegra: dp: Add DisplayPort link training helper Thierry Reding
2019-10-24 16:45 ` [PATCH 17/32] drm/tegra: sor: Use DP link training helpers Thierry Reding
2019-10-24 16:45 ` [PATCH 18/32] drm/tegra: sor: Hook up I2C-over-AUX to output Thierry Reding
2019-10-24 16:45 ` [PATCH 19/32] drm/tegra: sor: Stabilize eDP Thierry Reding
2019-10-24 16:45 ` [PATCH 20/32] drm/tegra: sor: Filter eDP rates Thierry Reding
2019-10-24 16:45 ` [PATCH 21/32] drm/tegra: sor: Add DisplayPort support Thierry Reding
2019-10-24 16:45 ` [PATCH 22/32] drm/tegra: sor: Remove tegra186-sor1 support Thierry Reding
2019-10-24 16:45 ` [PATCH 23/32] drm/tegra: sor: Use correct SOR index on Tegra210 Thierry Reding
2019-10-24 16:45 ` [PATCH 24/32] drm/tegra: sor: Implement pad clock for all SOR instances Thierry Reding
2019-10-24 16:45 ` [PATCH 25/32] drm/tegra: sor: Deduplicate connector type detection code Thierry Reding
2019-10-24 16:45 ` [PATCH 26/32] drm/tegra: sor: Support DisplayPort on Tegra194 Thierry Reding
2019-10-24 16:45 ` [PATCH 27/32] drm/tegra: sor: Unify clock setup for eDP, HDMI and DP Thierry Reding
2019-10-24 16:45 ` [PATCH 28/32] drm/tegra: sor: Use correct I/O pad for DP Thierry Reding
2019-10-24 16:45 ` [PATCH 29/32] drm/tegra: sor: Unify eDP and DP support Thierry Reding
2019-10-24 16:45 ` [PATCH 30/32] drm/tegra: sor: Avoid timeouts on unplug events Thierry Reding
2019-10-24 16:45 ` [PATCH 31/32] drm/tegra: sor: Extract common audio enabling code Thierry Reding
2019-10-24 16:45 ` [PATCH 32/32] drm/tegra: sor: Introduce audio enable/disable callbacks Thierry Reding
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