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| 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_ch7017.c | |
| parent | 4ac41f47f8f6ba1d05b39783ea0819435074ef37 (diff) | |
| download | linux-732ce74f4adfcdac84862fb74c6897b4a152d5e1.tar.gz linux-732ce74f4adfcdac84862fb74c6897b4a152d5e1.tar.bz2 linux-732ce74f4adfcdac84862fb74c6897b4a152d5e1.zip | |
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_ch7017.c')
| -rw-r--r-- | drivers/gpu/drm/i915/dvo_ch7017.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/dvo_ch7017.c b/drivers/gpu/drm/i915/dvo_ch7017.c index 71e7650a2994..86b27d1d90c2 100644 --- a/drivers/gpu/drm/i915/dvo_ch7017.c +++ b/drivers/gpu/drm/i915/dvo_ch7017.c @@ -359,6 +359,18 @@ static void ch7017_dpms(struct intel_dvo_device *dvo, bool enable) msleep(20); } +static bool ch7017_get_hw_state(struct intel_dvo_device *dvo) +{ + uint8_t val; + + ch7017_read(dvo, CH7017_LVDS_POWER_DOWN, &val); + + if (val & CH7017_LVDS_POWER_DOWN_EN) + return false; + else + return true; +} + static void ch7017_dump_regs(struct intel_dvo_device *dvo) { uint8_t val; @@ -396,6 +408,7 @@ struct intel_dvo_dev_ops ch7017_ops = { .mode_valid = ch7017_mode_valid, .mode_set = ch7017_mode_set, .dpms = ch7017_dpms, + .get_hw_state = ch7017_get_hw_state, .dump_regs = ch7017_dump_regs, .destroy = ch7017_destroy, }; |