[Intel-gfx] [PATCH 5/8] drm/i915: Add a atomic evasion step to watermark programming.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Wed Oct 12 13:28:18 UTC 2016
Allow the driver to write watermarks during atomic evasion.
This will make it possible to write the watermarks in a cleaner
way on gen9+.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 6 ++++--
drivers/gpu/drm/i915/intel_display.c | 18 ++++++++----------
drivers/gpu/drm/i915/intel_pm.c | 19 +++++++++++++++++--
3 files changed, 29 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f65ccf9b0bea..09588c58148f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -484,6 +484,7 @@ struct sdvo_device_mapping {
struct intel_connector;
struct intel_encoder;
+struct intel_atomic_state;
struct intel_crtc_state;
struct intel_initial_plane_config;
struct intel_crtc;
@@ -497,8 +498,9 @@ struct drm_i915_display_funcs {
int (*compute_intermediate_wm)(struct drm_device *dev,
struct intel_crtc *intel_crtc,
struct intel_crtc_state *newstate);
- void (*initial_watermarks)(struct intel_crtc_state *cstate);
- void (*optimize_watermarks)(struct intel_crtc_state *cstate);
+ void (*initial_watermarks)(struct intel_atomic_state *state, struct intel_crtc_state *cstate);
+ void (*atomic_evade_watermarks)(struct intel_atomic_state *state, struct intel_crtc_state *cstate);
+ void (*optimize_watermarks)(struct intel_atomic_state *state, struct intel_crtc_state *cstate);
int (*compute_global_watermarks)(struct drm_atomic_state *state);
void (*update_wm)(struct drm_crtc *crtc);
int (*modeset_calc_cdclk)(struct drm_atomic_state *state);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 55f8ec8c76ae..23d8c72dade3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5160,7 +5160,7 @@ static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
* us to.
*/
if (dev_priv->display.initial_watermarks != NULL)
- dev_priv->display.initial_watermarks(pipe_config);
+ dev_priv->display.initial_watermarks(to_intel_atomic_state(old_state), pipe_config);
else if (pipe_config->update_wm_pre)
intel_update_watermarks(&crtc->base);
}
@@ -5374,7 +5374,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
intel_color_load_luts(&pipe_config->base);
if (dev_priv->display.initial_watermarks != NULL)
- dev_priv->display.initial_watermarks(intel_crtc->config);
+ dev_priv->display.initial_watermarks(to_intel_atomic_state(old_state), intel_crtc->config);
intel_enable_pipe(intel_crtc);
if (intel_crtc->config->has_pch_encoder)
@@ -5480,7 +5480,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
intel_ddi_enable_transcoder_func(crtc);
if (dev_priv->display.initial_watermarks != NULL)
- dev_priv->display.initial_watermarks(pipe_config);
+ dev_priv->display.initial_watermarks(to_intel_atomic_state(old_state), pipe_config);
else
intel_update_watermarks(crtc);
@@ -14503,7 +14503,7 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
intel_cstate = to_intel_crtc_state(crtc->state);
if (dev_priv->display.optimize_watermarks)
- dev_priv->display.optimize_watermarks(intel_cstate);
+ dev_priv->display.optimize_watermarks(intel_state, intel_cstate);
}
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
@@ -14908,7 +14908,6 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
struct intel_crtc_state *old_intel_state =
to_intel_crtc_state(old_crtc_state);
bool modeset = needs_modeset(crtc->state);
- enum pipe pipe = intel_crtc->pipe;
/* Perform vblank evasion around commit operation */
intel_pipe_update_start(intel_crtc);
@@ -14923,12 +14922,11 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
if (intel_cstate->update_pipe)
intel_update_pipe_config(intel_crtc, old_intel_state);
- else if (INTEL_GEN(dev_priv) >= 9) {
+ else if (INTEL_GEN(dev_priv) >= 9)
skl_detach_scalers(intel_crtc);
- I915_WRITE(PIPE_WM_LINETIME(pipe),
- intel_cstate->wm.skl.optimal.linetime);
- }
+ if (dev_priv->display.atomic_evade_watermarks)
+ dev_priv->display.atomic_evade_watermarks(to_intel_atomic_state(old_crtc_state->state), intel_cstate);
}
static void intel_finish_crtc_commit(struct drm_crtc *crtc,
@@ -16388,7 +16386,7 @@ retry:
struct intel_crtc_state *cs = to_intel_crtc_state(cstate);
cs->wm.need_postvbl_update = true;
- dev_priv->display.optimize_watermarks(cs);
+ dev_priv->display.optimize_watermarks(to_intel_atomic_state(state), cs);
}
drm_atomic_state_free(state);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 45fb8275abea..05ccd253fd7a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4177,6 +4177,18 @@ skl_compute_wm(struct drm_atomic_state *state)
return 0;
}
+static void skl_evade_crtc_wm(struct intel_atomic_state *state,
+ struct intel_crtc_state *cstate)
+{
+ struct intel_crtc *crtc = to_intel_crtc(cstate->base.crtc);
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+ struct skl_pipe_wm *pipe_wm = &cstate->wm.skl.optimal;
+ enum pipe pipe = crtc->pipe;
+
+ I915_WRITE(PIPE_WM_LINETIME(pipe),
+ pipe_wm->linetime);
+}
+
static void skl_update_wm(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -4270,7 +4282,8 @@ static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
ilk_write_wm_values(dev_priv, &results);
}
-static void ilk_initial_watermarks(struct intel_crtc_state *cstate)
+static void ilk_initial_watermarks(struct intel_atomic_state *state,
+ struct intel_crtc_state *cstate)
{
struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
@@ -4281,7 +4294,8 @@ static void ilk_initial_watermarks(struct intel_crtc_state *cstate)
mutex_unlock(&dev_priv->wm.wm_mutex);
}
-static void ilk_optimize_watermarks(struct intel_crtc_state *cstate)
+static void ilk_optimize_watermarks(struct intel_atomic_state *state,
+ struct intel_crtc_state *cstate)
{
struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
@@ -7715,6 +7729,7 @@ void intel_init_pm(struct drm_device *dev)
if (INTEL_INFO(dev)->gen >= 9) {
skl_setup_wm_latency(dev);
dev_priv->display.update_wm = skl_update_wm;
+ dev_priv->display.atomic_evade_watermarks = skl_evade_crtc_wm;
dev_priv->display.compute_global_watermarks = skl_compute_wm;
} else if (HAS_PCH_SPLIT(dev)) {
ilk_setup_wm_latency(dev);
--
2.7.4
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