diff options
| author | Madhav Chauhan <madhav.chauhan@intel.com> | 2018-09-16 16:23:27 +0530 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-09-24 17:20:24 +0300 |
| commit | 70a7b83628fa3f6599bd1a7c500f6a8fcdb81ab0 (patch) | |
| tree | 792feeb336a8672b63d6ff8f18da1a5e4cdf2998 /drivers/gpu/drm/i915/icl_dsi.c | |
| parent | ba3df888be909a8850e695a3d9631cfb49afede2 (diff) | |
drm/i915/icl: Program T_INIT_MASTER registers
This patch programs the time (in escape clocks) to drive
the link in the initialization (i.e. LP-11) state.
v2: Rebase
v3: Remove step hard coding comments (Jani N)
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1537095223-5184-5-git-send-email-madhav.chauhan@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/icl_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/icl_dsi.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index 190316c4c4c2..ff5b285ca495 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -277,6 +277,22 @@ static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder) } } +static void gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + u32 tmp; + enum port port; + + /* Program T-INIT master registers */ + for_each_dsi_port(port, intel_dsi->ports) { + tmp = I915_READ(ICL_DSI_T_INIT_MASTER(port)); + tmp &= ~MASTER_INIT_TIMER_MASK; + tmp |= intel_dsi->init_count; + I915_WRITE(ICL_DSI_T_INIT_MASTER(port), tmp); + } +} + static void gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder) { /* step 4a: power up all lanes of the DDI used by DSI */ @@ -290,6 +306,9 @@ static void gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder) /* enable DDI buffer */ gen11_dsi_enable_ddi_buffer(encoder); + + /* setup D-PHY timings */ + gen11_dsi_setup_dphy_timings(encoder); } static void __attribute__((unused)) |