Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7e246430 authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: hdmi - Fix disable sequence 



For some reason when the PW*_ENABLE and PM*_ENABLE fields are cleared
during disable, the HDMI output stops working properly. Resetting and
initializing doesn't help.

Comment out those accesses for now until it has been determined what to
do about them.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 9cbfc73e

drivers/gpu/drm/tegra/hdmi.c

+8 −0
Original line number Diff line number Diff line
@@ -942,10 +942,18 @@ static int tegra_output_hdmi_disable(struct tegra_output *output) 
	 * sure it's only executed when the output is attached to one.

	 */

	if (dc) {

		/*

		 * XXX: We can't do this here because it causes HDMI to go

		 * into an erroneous state with the result that HDMI won't

		 * properly work once disabled. See also a similar symptom

		 * for the SOR output.

		 */

		/*

		value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);

		value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |

			   PW4_ENABLE | PM0_ENABLE | PM1_ENABLE);

		tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);

		*/



		value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);

		value &= ~DISP_CTRL_MODE_MASK;