diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dmc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dmc.c | 56 |
1 files changed, 50 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c index ed28107cbd12..00e18a4a5a5a 100644 --- a/drivers/gpu/drm/i915/display/intel_dmc.c +++ b/drivers/gpu/drm/i915/display/intel_dmc.c @@ -277,6 +277,17 @@ static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv) intel_de_posting_read(dev_priv, DC_STATE_DEBUG); } +static void disable_event_handler(struct drm_i915_private *i915, + i915_reg_t ctl_reg, i915_reg_t htp_reg) +{ + intel_de_write(i915, ctl_reg, + REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK, + DMC_EVT_CTL_TYPE_EDGE_0_1) | + REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK, + DMC_EVT_CTL_EVENT_ID_FALSE)); + intel_de_write(i915, htp_reg, 0); +} + static void disable_flip_queue_event(struct drm_i915_private *i915, i915_reg_t ctl_reg, i915_reg_t htp_reg) @@ -299,12 +310,7 @@ disable_flip_queue_event(struct drm_i915_private *i915, return; } - intel_de_write(i915, ctl_reg, - REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK, - DMC_EVT_CTL_TYPE_EDGE_0_1) | - REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK, - DMC_EVT_CTL_EVENT_ID_FALSE)); - intel_de_write(i915, htp_reg, 0); + disable_event_handler(i915, ctl_reg, htp_reg); } static bool @@ -356,6 +362,27 @@ disable_all_flip_queue_events(struct drm_i915_private *i915) } } +static void disable_all_event_handlers(struct drm_i915_private *i915) +{ + int id; + + /* TODO: disable the event handlers on pre-GEN12 platforms as well */ + if (DISPLAY_VER(i915) < 12) + return; + + for (id = DMC_FW_MAIN; id < DMC_FW_MAX; id++) { + int handler; + + if (!has_dmc_id_fw(i915, id)) + continue; + + for (handler = 0; handler < DMC_EVENT_HANDLER_COUNT_GEN12; handler++) + disable_event_handler(i915, + DMC_EVT_CTL(i915, id, handler), + DMC_EVT_HTP(i915, id, handler)); + } +} + /** * intel_dmc_load_program() - write the firmware from memory to register. * @dev_priv: i915 drm device. @@ -372,6 +399,8 @@ void intel_dmc_load_program(struct drm_i915_private *dev_priv) if (!intel_dmc_has_payload(dev_priv)) return; + disable_all_event_handlers(dev_priv); + assert_rpm_wakelock_held(&dev_priv->runtime_pm); preempt_disable(); @@ -405,6 +434,21 @@ void intel_dmc_load_program(struct drm_i915_private *dev_priv) disable_all_flip_queue_events(dev_priv); } +/** + * intel_dmc_disable_program() - disable the firmware + * @i915: i915 drm device + * + * Disable all event handlers in the firmware, making sure the firmware is + * inactive after the display is uninitialized. + */ +void intel_dmc_disable_program(struct drm_i915_private *i915) +{ + if (!intel_dmc_has_payload(i915)) + return; + + disable_all_event_handlers(i915); +} + void assert_dmc_loaded(struct drm_i915_private *i915) { drm_WARN_ONCE(&i915->drm, |