From: Rajeev Nandan <rajeevny@codeaurora.org>
To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
freedreno@lists.freedesktop.org, devicetree@vger.kernel.org
Cc: Rajeev Nandan <rajeevny@codeaurora.org>,
linux-kernel@vger.kernel.org, thierry.reding@gmail.com,
sam@ravnborg.org, robdclark@gmail.com, dianders@chromium.org,
lyude@redhat.com, jani.nikula@intel.com, robh@kernel.org,
laurent.pinchart@ideasonboard.com, a.hajda@samsung.com,
daniel.thompson@linaro.org, hoegsberg@chromium.org,
abhinavk@codeaurora.org, seanpaul@chromium.org,
kalyan_t@codeaurora.org, mkrishn@codeaurora.org,
lee.jones@linaro.org, jingoohan1@gmail.com,
linux-fbdev@vger.kernel.org
Subject: [v6 2/5] drm/panel-simple: Support DP AUX backlight
Date: Sat, 12 Jun 2021 17:37:59 +0530 [thread overview]
Message-ID: <1623499682-2140-3-git-send-email-rajeevny@codeaurora.org> (raw)
In-Reply-To: <1623499682-2140-1-git-send-email-rajeevny@codeaurora.org>
If there is no backlight specified in the device tree and the panel
has access to the DP AUX channel then create a DP AUX backlight if
supported by the panel.
Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---
(no changes since v5)
This patch depends on the previous patch (2/5) of this series.
Changes in v4:
- New
Changes in v5:
- Address review comments and move backlight functions to drm_panel.c (Douglas)
- Create and register DP AUX backlight if there is no backlight specified in the
device tree and panel has the DP AUX channel. (Douglas)
- The new drm_panel_dp_aux_backlight() will do the drm_edp_backlight_supported() check.
drivers/gpu/drm/panel/panel-simple.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index df6fbd1..26555ec 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -800,6 +800,12 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc,
if (err)
goto disable_pm_runtime;
+ if (!panel->base.backlight && panel->aux) {
+ err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
+ if (err)
+ goto disable_pm_runtime;
+ }
+
drm_panel_add(&panel->base);
return 0;
--
2.7.4
next prev parent reply other threads:[~2021-06-12 12:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 12:07 [v6 0/5] drm: Support basic DPCD backlight in panel-simple and add a new panel ATNA33XC20 Rajeev Nandan
2021-06-12 12:07 ` [v6 1/5] drm/panel: add basic DP AUX backlight support Rajeev Nandan
2021-06-16 19:22 ` Lyude Paul
2021-06-12 12:07 ` Rajeev Nandan [this message]
2021-06-12 12:08 ` [v6 3/5] drm/panel-simple: Support for delays between GPIO & regulator Rajeev Nandan
2021-06-12 12:08 ` [v6 4/5] dt-bindings: display: simple: Add Samsung ATNA33XC20 Rajeev Nandan
2021-06-12 12:08 ` [v6 5/5] drm/panel-simple: " Rajeev Nandan
2021-06-16 15:02 ` Doug Anderson
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