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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2020-06-10 15:55:10 +0800 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-10-01 19:22:10 +0300 |
| commit | f542d671ffcec772a561cd41c7e2394392d9dafb (patch) | |
| tree | b60cdebde43109a43a519e661e0483edc1189b77 /drivers/gpu/drm/i915/display/intel_lspcon.h | |
| parent | ef79fafe9dae31037c48bd11676746315725452d (diff) | |
| download | linux-f542d671ffcec772a561cd41c7e2394392d9dafb.tar.gz linux-f542d671ffcec772a561cd41c7e2394392d9dafb.tar.bz2 linux-f542d671ffcec772a561cd41c7e2394392d9dafb.zip | |
drm/i915: Init lspcon after HPD in intel_dp_detect()
On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
becomes useless and never responds to cable hotplugging:
[ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
Seems like the lspcon chip on the system only gets powered after the
cable is plugged.
Consilidate lspcon_init() into lspcon_resume() to dynamically init
lspcon chip, and make HDMI port work.
v6:
- Rebase on latest for-linux-next.
v5:
- Consolidate lspcon_resume() with lspcon_init().
- Move more logic into lspcon code.
v4:
- Trust VBT in intel_infoframe_init().
- Init lspcon in intel_dp_detect().
v3:
- Make sure it's handled under long HPD case.
v2:
- Move lspcon_init() inside of intel_dp_hpd_pulse().
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/203
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200610075542.12882-1-kai.heng.feng@canonical.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_lspcon.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_lspcon.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h index 1cffe8a42a08..0851ea30831a 100644 --- a/drivers/gpu/drm/i915/display/intel_lspcon.h +++ b/drivers/gpu/drm/i915/display/intel_lspcon.h @@ -15,8 +15,7 @@ struct intel_digital_port; struct intel_encoder; struct intel_lspcon; -bool lspcon_init(struct intel_digital_port *dig_port); -void lspcon_resume(struct intel_lspcon *lspcon); +void lspcon_resume(struct intel_digital_port *dig_port); void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon); void lspcon_write_infoframe(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, |