From: Thierry Reding <treding@nvidia.com>
Date: Fri, 14 Mar 2014 13:25:43 +0000 (+0100)
Subject: drm/tegra: dsi - Reset controller on driver unload
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cb825d89f50c043839a9dbb0efd882ba96457c7d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

drm/tegra: dsi - Reset controller on driver unload

Assert the DSI controller's reset when the driver is unloaded to reduce
power consumption and to put the controller into a known state for
subsequent driver reloads.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 55ac86faec60..b6740c89f6f3 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -949,6 +949,7 @@ static int tegra_dsi_remove(struct platform_device *pdev)
 	clk_disable_unprepare(dsi->clk_parent);
 	clk_disable_unprepare(dsi->clk_lp);
 	clk_disable_unprepare(dsi->clk);
+	reset_control_assert(dsi->rst);
 
 	err = tegra_output_remove(&dsi->output);
 	if (err < 0) {