diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-07-02 15:09:45 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-09-06 07:58:52 +0200 |
| commit | 732ce74f4adfcdac84862fb74c6897b4a152d5e1 (patch) | |
| tree | dd7f9c2f30d4038f113973c17bb81788ee96f319 /drivers/gpu/drm/i915/dvo_sil164.c | |
| parent | 4ac41f47f8f6ba1d05b39783ea0819435074ef37 (diff) | |
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>
Diffstat (limited to 'drivers/gpu/drm/i915/dvo_sil164.c')
| -rw-r--r-- | drivers/gpu/drm/i915/dvo_sil164.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/dvo_sil164.c b/drivers/gpu/drm/i915/dvo_sil164.c index cc24c1cabec..4debd32e3e4 100644 --- a/drivers/gpu/drm/i915/dvo_sil164.c +++ b/drivers/gpu/drm/i915/dvo_sil164.c @@ -226,6 +226,21 @@ static void sil164_dpms(struct intel_dvo_device *dvo, bool enable) return; } +static bool sil164_get_hw_state(struct intel_dvo_device *dvo) +{ + int ret; + unsigned char ch; + + ret = sil164_readb(dvo, SIL164_REG8, &ch); + if (ret == false) + return false; + + if (ch & SIL164_8_PD) + return true; + else + return false; +} + static void sil164_dump_regs(struct intel_dvo_device *dvo) { uint8_t val; @@ -258,6 +273,7 @@ struct intel_dvo_dev_ops sil164_ops = { .mode_valid = sil164_mode_valid, .mode_set = sil164_mode_set, .dpms = sil164_dpms, + .get_hw_state = sil164_get_hw_state, .dump_regs = sil164_dump_regs, .destroy = sil164_destroy, }; |