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_ch7xxx.c b/drivers/gpu/drm/i915/dvo_ch7xxx.c
index c1dea5b..38f3a6c 100644
--- a/drivers/gpu/drm/i915/dvo_ch7xxx.c
+++ b/drivers/gpu/drm/i915/dvo_ch7xxx.c
@@ -297,6 +297,18 @@
ch7xxx_writeb(dvo, CH7xxx_PM, CH7xxx_PM_FPD);
}
+static bool ch7xxx_get_hw_state(struct intel_dvo_device *dvo)
+{
+ u8 val;
+
+ ch7xxx_readb(dvo, CH7xxx_PM, &val);
+
+ if (val & CH7xxx_PM_FPD)
+ return false;
+ else
+ return true;
+}
+
static void ch7xxx_dump_regs(struct intel_dvo_device *dvo)
{
int i;
@@ -326,6 +338,7 @@
.mode_valid = ch7xxx_mode_valid,
.mode_set = ch7xxx_mode_set,
.dpms = ch7xxx_dpms,
+ .get_hw_state = ch7xxx_get_hw_state,
.dump_regs = ch7xxx_dump_regs,
.destroy = ch7xxx_destroy,
};