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| author | Keith Packard <keithp@keithp.com> | 2011-09-28 23:41:05 (GMT) |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-10-06 02:56:51 (GMT) |
| commit | 0b5c541b93792ddd7fe34a450c76377ffad7bef3 (patch) | |
| tree | d3c34659dcb9bc7902d0b69eb7951d39978b2f61 | |
| parent | 8c241fef3e6f69f3f675678ae03599ece3f562e2 (diff) | |
| download | linux-0b5c541b93792ddd7fe34a450c76377ffad7bef3.tar.xz | |
drm/i915: Enable eDP panel power during I2C initialization sequence
The DP i2c initialization code does a couple of i2c transactions,
which means that an eDP panel must be powered up.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 320c379..2b4acfd 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -595,10 +595,15 @@ intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, return -EREMOTEIO; } +static void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp); +static void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp); + static int intel_dp_i2c_init(struct intel_dp *intel_dp, struct intel_connector *intel_connector, const char *name) { + int ret; + DRM_DEBUG_KMS("i2c_init %s\n", name); intel_dp->algo.running = false; intel_dp->algo.address = 0; @@ -612,7 +617,10 @@ intel_dp_i2c_init(struct intel_dp *intel_dp, intel_dp->adapter.algo_data = &intel_dp->algo; intel_dp->adapter.dev.parent = &intel_connector->base.kdev; - return i2c_dp_aux_add_bus(&intel_dp->adapter); + ironlake_edp_panel_vdd_on(intel_dp); + ret = i2c_dp_aux_add_bus(&intel_dp->adapter); + ironlake_edp_panel_vdd_off(intel_dp); + return ret; } static bool |