drm/i915/dvo: implement get_hw_state
Similar to the sdvo code we poke the dvo encoder whether the output is
active. Safe that dvo encoders are not standardized, so this requires
a new callback into the dvo chip driver.
Hence implement that for all 6 dvo drivers.
v2: With the newly added ns2501 we now have 6 dvo drivers instead of
just 5 ...
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/dvo_ivch.c b/drivers/gpu/drm/i915/dvo_ivch.c
index fa8ff6b..baaf65b 100644
--- a/drivers/gpu/drm/i915/dvo_ivch.c
+++ b/drivers/gpu/drm/i915/dvo_ivch.c
@@ -323,6 +323,20 @@
udelay(16 * 1000);
}
+static bool ivch_get_hw_state(struct intel_dvo_device *dvo)
+{
+ uint16_t vr01;
+
+ /* Set the new power state of the panel. */
+ if (!ivch_read(dvo, VR01, &vr01))
+ return false;
+
+ if (vr01 & VR01_LCD_ENABLE)
+ return true;
+ else
+ return false;
+}
+
static void ivch_mode_set(struct intel_dvo_device *dvo,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
@@ -413,6 +427,7 @@
struct intel_dvo_dev_ops ivch_ops = {
.init = ivch_init,
.dpms = ivch_dpms,
+ .get_hw_state = ivch_get_hw_state,
.mode_valid = ivch_mode_valid,
.mode_set = ivch_mode_set,
.detect = ivch_detect,