Move the generic sanitize_watermarks() to intel_wm.[ch] and rename as
intel_wm_sanitize(). The slightly unfortunate downside is having to
expose intel_atomic_check() from intel_display.c, but this declutters
intel_display.c nicely.
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 124 +------------------
drivers/gpu/drm/i915/display/intel_display.h | 2 +
drivers/gpu/drm/i915/display/intel_wm.c | 119 ++++++++++++++++++
drivers/gpu/drm/i915/display/intel_wm.h | 1 +
4 files changed, 125 insertions(+), 121 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 82efd96ace87..abb40112704b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6602,8 +6602,8 @@ static int intel_bigjoiner_add_affected_crtcs(struct intel_atomic_state *state)
* @dev: drm device
* @_state: state to validate
*/
-static int intel_atomic_check(struct drm_device *dev,
- struct drm_atomic_state *_state)
+int intel_atomic_check(struct drm_device *dev,
+ struct drm_atomic_state *_state)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_atomic_state *state = to_intel_atomic_state(_state);
@@ -8263,124 +8263,6 @@ void intel_modeset_init_hw(struct drm_i915_private *i915)
cdclk_state->logical = cdclk_state->actual = i915->display.cdclk.hw;
}
-static int sanitize_watermarks_add_affected(struct drm_atomic_state *state)
-{
- struct drm_plane *plane;
- struct intel_crtc *crtc;
-
- for_each_intel_crtc(state->dev, crtc) {
- struct intel_crtc_state *crtc_state;
-
- crtc_state = intel_atomic_get_crtc_state(state, crtc);
- if (IS_ERR(crtc_state))
- return PTR_ERR(crtc_state);
-
- if (crtc_state->hw.active) {
- /*
- * Preserve the inherited flag to avoid
- * taking the full modeset path.
- */
- crtc_state->inherited = true;
- }
- }
-
- drm_for_each_plane(plane, state->dev) {
- struct drm_plane_state *plane_state;
-
- plane_state = drm_atomic_get_plane_state(state, plane);
- if (IS_ERR(plane_state))
- return PTR_ERR(plane_state);
- }
-
- return 0;
-}
-
-/*
- * Calculate what we think the watermarks should be for the state we've read
- * out of the hardware and then immediately program those watermarks so that
- * we ensure the hardware settings match our internal state.
- *
- * We can calculate what we think WM's should be by creating a duplicate of the
- * current state (which was constructed during hardware readout) and running it
- * through the atomic check code to calculate new watermark values in the
- * state object.
- */
-static void sanitize_watermarks(struct drm_i915_private *dev_priv)
-{
- struct drm_atomic_state *state;
- struct intel_atomic_state *intel_state;
- struct intel_crtc *crtc;
- struct intel_crtc_state *crtc_state;
- struct drm_modeset_acquire_ctx ctx;
- int ret;
- int i;
-
- /* Only supported on platforms that use atomic watermark design */
- if (!dev_priv->display.funcs.wm->optimize_watermarks)
- return;
-
- state = drm_atomic_state_alloc(&dev_priv->drm);
- if (drm_WARN_ON(&dev_priv->drm, !state))
- return;
-
- intel_state = to_intel_atomic_state(state);
-
- drm_modeset_acquire_init(&ctx, 0);
-
-retry:
- state->acquire_ctx = &ctx;
-
- /*
- * Hardware readout is the only time we don't want to calculate
- * intermediate watermarks (since we don't trust the current
- * watermarks).
- */
- if (!HAS_GMCH(dev_priv))
- intel_state->skip_intermediate_wm = true;
-
- ret = sanitize_watermarks_add_affected(state);
- if (ret)
- goto fail;
-
- ret = intel_atomic_check(&dev_priv->drm, state);
- if (ret)
- goto fail;
-
- /* Write calculated watermark values back */
- for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) {
- crtc_state->wm.need_postvbl_update = true;
- intel_optimize_watermarks(intel_state, crtc);
-
- to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm;
- }
-
-fail:
- if (ret == -EDEADLK) {
- drm_atomic_state_clear(state);
- drm_modeset_backoff(&ctx);
- goto retry;
- }
-
- /*
- * If we fail here, it means that the hardware appears to be
- * programmed in a way that shouldn't be possible, given our
- * understanding of watermark requirements. This might mean a
- * mistake in the hardware readout code or a mistake in the
- * watermark calculations for a given platform. Raise a WARN
- * so that this is noticeable.
- *
- * If this actually happens, we'll have to just leave the
- * BIOS-programmed watermarks untouched and hope for the best.
- */
- drm_WARN(&dev_priv->drm, ret,
- "Could not determine valid watermarks for inherited state\n");
-
- drm_atomic_state_put(state);
-
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
-}
-
static int intel_initial_commit(struct drm_device *dev)
{
struct drm_atomic_state *state = NULL;
@@ -8657,7 +8539,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
* since the watermark calculation done here will use pstate->fb.
*/
if (!HAS_GMCH(i915))
- sanitize_watermarks(i915);
+ intel_wm_sanitize(i915);
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index cb6f520cc575..ed852f62721d 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -32,6 +32,7 @@
enum drm_scaling_filter;
struct dpll;
+struct drm_atomic_state;
struct drm_connector;
struct drm_device;
struct drm_display_mode;
@@ -394,6 +395,7 @@ enum phy_fia {
((connector) = to_intel_connector((__state)->base.connectors[__i].ptr), \
(new_connector_state) = to_intel_digital_connector_state((__state)->base.connectors[__i].new_state), 1))
+int intel_atomic_check(struct drm_device *dev, struct drm_atomic_state *state);
int intel_atomic_add_affected_planes(struct intel_atomic_state *state,
struct intel_crtc *crtc);
u8 intel_calc_active_pipes(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_wm.c b/drivers/gpu/drm/i915/display/intel_wm.c
index c4d14a51869b..15fda0829c2f 100644
--- a/drivers/gpu/drm/i915/display/intel_wm.c
+++ b/drivers/gpu/drm/i915/display/intel_wm.c
@@ -5,6 +5,7 @@
#include "i915_drv.h"
#include "i9xx_wm.h"
+#include "intel_atomic.h"
#include "intel_display_types.h"
#include "intel_wm.h"
#include "skl_watermark.h"
@@ -173,6 +174,124 @@ void intel_print_wm_latency(struct drm_i915_private *dev_priv,
}
}
+static int sanitize_watermarks_add_affected(struct drm_atomic_state *state)
+{
+ struct drm_plane *plane;
+ struct intel_crtc *crtc;
+
+ for_each_intel_crtc(state->dev, crtc) {
+ struct intel_crtc_state *crtc_state;
+
+ crtc_state = intel_atomic_get_crtc_state(state, crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ if (crtc_state->hw.active) {
+ /*
+ * Preserve the inherited flag to avoid
+ * taking the full modeset path.
+ */
+ crtc_state->inherited = true;
+ }
+ }
+
+ drm_for_each_plane(plane, state->dev) {
+ struct drm_plane_state *plane_state;
+
+ plane_state = drm_atomic_get_plane_state(state, plane);
+ if (IS_ERR(plane_state))
+ return PTR_ERR(plane_state);
+ }
+
+ return 0;
+}
+
+/*
+ * Calculate what we think the watermarks should be for the state we've read
+ * out of the hardware and then immediately program those watermarks so that
+ * we ensure the hardware settings match our internal state.
+ *
+ * We can calculate what we think WM's should be by creating a duplicate of the
+ * current state (which was constructed during hardware readout) and running it
+ * through the atomic check code to calculate new watermark values in the
+ * state object.
+ */
+void intel_wm_sanitize(struct drm_i915_private *dev_priv)
+{
+ struct drm_atomic_state *state;
+ struct intel_atomic_state *intel_state;
+ struct intel_crtc *crtc;
+ struct intel_crtc_state *crtc_state;
+ struct drm_modeset_acquire_ctx ctx;
+ int ret;
+ int i;
+
+ /* Only supported on platforms that use atomic watermark design */
+ if (!dev_priv->display.funcs.wm->optimize_watermarks)
+ return;
+
+ state = drm_atomic_state_alloc(&dev_priv->drm);
+ if (drm_WARN_ON(&dev_priv->drm, !state))
+ return;
+
+ intel_state = to_intel_atomic_state(state);
+
+ drm_modeset_acquire_init(&ctx, 0);
+
+retry:
+ state->acquire_ctx = &ctx;
+
+ /*
+ * Hardware readout is the only time we don't want to calculate
+ * intermediate watermarks (since we don't trust the current
+ * watermarks).
+ */
+ if (!HAS_GMCH(dev_priv))
+ intel_state->skip_intermediate_wm = true;
+
+ ret = sanitize_watermarks_add_affected(state);
+ if (ret)
+ goto fail;
+
+ ret = intel_atomic_check(&dev_priv->drm, state);
+ if (ret)
+ goto fail;
+
+ /* Write calculated watermark values back */
+ for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) {
+ crtc_state->wm.need_postvbl_update = true;
+ intel_optimize_watermarks(intel_state, crtc);
+
+ to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm;
+ }
+
+fail:
+ if (ret == -EDEADLK) {
+ drm_atomic_state_clear(state);
+ drm_modeset_backoff(&ctx);
+ goto retry;
+ }
+
+ /*
+ * If we fail here, it means that the hardware appears to be
+ * programmed in a way that shouldn't be possible, given our
+ * understanding of watermark requirements. This might mean a
+ * mistake in the hardware readout code or a mistake in the
+ * watermark calculations for a given platform. Raise a WARN
+ * so that this is noticeable.
+ *
+ * If this actually happens, we'll have to just leave the
+ * BIOS-programmed watermarks untouched and hope for the best.
+ */
+ drm_WARN(&dev_priv->drm, ret,
+ "Could not determine valid watermarks for inherited state\n");
+
+ drm_atomic_state_put(state);
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+}
+
void intel_wm_init(struct drm_i915_private *i915)
{
if (DISPLAY_VER(i915) >= 9)
diff --git a/drivers/gpu/drm/i915/display/intel_wm.h b/drivers/gpu/drm/i915/display/intel_wm.h
index dc582967a25e..a5233e7e5e8d 100644
--- a/drivers/gpu/drm/i915/display/intel_wm.h
+++ b/drivers/gpu/drm/i915/display/intel_wm.h
@@ -31,6 +31,7 @@ bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state);
void intel_print_wm_latency(struct drm_i915_private *i915,
const char *name, const u16 wm[]);
+void intel_wm_sanitize(struct drm_i915_private *i915);
void intel_wm_init(struct drm_i915_private *i915);
#endif /* __INTEL_WM_H__ */
--
2.34.1
