diff options
| author | Matt Roper <matthew.d.roper@intel.com> | 2020-06-03 14:15:23 -0700 |
|---|---|---|
| committer | Matt Roper <matthew.d.roper@intel.com> | 2020-06-04 14:00:23 -0700 |
| commit | 562ddcb7485432b2526fe6e158f7ef58631e4d99 (patch) | |
| tree | 4bcf548cff17f8e0c3ced9db30ac9ba9d62821e4 /drivers | |
| parent | aefaa1f452ab2bb933265e1fe6ea25337f08c5ce (diff) | |
drm/i915/rkl: Don't try to access transcoder D
There are a couple places in our driver that loop over transcoders A..D
for gen11+; since RKL only has three pipes/transcoders, this can lead to
unclaimed register reads/writes. We should add checks for transcoder
existence where appropriate.
v2: Move one transcoder check that wound up in the wrong function after
conflict resolution. It belongs in bdw_get_trans_port_sync_config
rather than bxt_get_dsi_transcoder_state.
v3: Switch loops to use for_each_cpu_transcoder_masked() since this
iterator already checks the platform's transcoder mask for us.
(Ville)
Cc: Aditya Swarup <aditya.swarup@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200603211529.3005059-10-matthew.d.roper@intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 490574669eaa..8e823ba25f5f 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2872,13 +2872,15 @@ static void gen11_display_irq_reset(struct drm_i915_private *dev_priv) { struct intel_uncore *uncore = &dev_priv->uncore; enum pipe pipe; + u32 trans_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | + BIT(TRANSCODER_C) | BIT(TRANSCODER_D); intel_uncore_write(uncore, GEN11_DISPLAY_INT_CTL, 0); if (INTEL_GEN(dev_priv) >= 12) { enum transcoder trans; - for (trans = TRANSCODER_A; trans <= TRANSCODER_D; trans++) { + for_each_cpu_transcoder_masked(dev_priv, trans, trans_mask) { enum intel_display_power_domain domain; domain = POWER_DOMAIN_TRANSCODER(trans); @@ -3400,6 +3402,8 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) u32 de_port_masked = gen8_de_port_aux_mask(dev_priv); u32 de_port_enables; u32 de_misc_masked = GEN8_DE_EDP_PSR; + u32 trans_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | + BIT(TRANSCODER_C) | BIT(TRANSCODER_D); enum pipe pipe; if (INTEL_GEN(dev_priv) <= 10) @@ -3420,7 +3424,7 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) if (INTEL_GEN(dev_priv) >= 12) { enum transcoder trans; - for (trans = TRANSCODER_A; trans <= TRANSCODER_D; trans++) { + for_each_cpu_transcoder_masked(dev_priv, trans, trans_mask) { enum intel_display_power_domain domain; domain = POWER_DOMAIN_TRANSCODER(trans); |