[PATCH 2/7] drm/exynos/hdmi: add PHY power off signal handling

[Andrzej Hajda]

HDMI-PHY power off bit defaults to 0 in older HDMI versions.
In case of Exynos5433 it defaults to 1. To make code
consistent across all versions this bit is always unset/set in
power on/off sequences.

Signed-off-by: Andrzej Hajda <a.hajda at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 5c7dbfc..16951f3 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1757,6 +1757,8 @@ static void hdmi_enable(struct drm_encoder *encoder)
 
 	hdmi_set_refclk(hdata, true);
 
+	hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, 0, HDMI_PHY_POWER_OFF_EN);
+
 	hdmi_conf_apply(hdata);
 
 	hdata->powered = true;
@@ -1789,6 +1791,8 @@ static void hdmi_disable(struct drm_encoder *encoder)
 
 	cancel_delayed_work(&hdata->hotplug_work);
 
+	hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, ~0, HDMI_PHY_POWER_OFF_EN);
+
 	hdmi_set_refclk(hdata, false);
 
 	regmap_update_bits(hdata->pmureg, PMU_HDMI_PHY_CONTROL,
-- 
1.9.1