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drm/i915/dvo: implement get_hw_state

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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>
This commit is contained in:
Daniel Vetter
2012-07-02 15:09:45 +02:00
parent 4ac41f47f8
commit 732ce74f4a
8 changed files with 119 additions and 0 deletions
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drivers/gpu/drm/i915/dvo_ns2501.c
+15
View File
@@ -492,6 +492,20 @@ static void ns2501_mode_set(struct intel_dvo_device *dvo,
restore_dvo(dvo);
}
/* set the NS2501 power state */
static bool ns2501_get_hw_state(struct intel_dvo_device *dvo)
{
unsigned char ch;
if (!ns2501_readb(dvo, NS2501_REG8, &ch))
return false;
if (ch & NS2501_8_PD)
return true;
else
return false;
}
/* set the NS2501 power state */
static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable)
{
@@ -568,6 +582,7 @@ struct intel_dvo_dev_ops ns2501_ops = {
.mode_valid = ns2501_mode_valid,
.mode_set = ns2501_mode_set,
.dpms = ns2501_dpms,
.get_hw_state = ns2501_get_hw_state,
.dump_regs = ns2501_dump_regs,
.destroy = ns2501_destroy,
};