}
static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
u32 val, cmd = cdclk_state->voltage_level;
}
static void chv_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
u32 val, cmd = cdclk_state->voltage_level;
}
static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
u32 val;
}
static void skl_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
int vco = cdclk_state->vco;
cdclk_state.cdclk = skl_calc_cdclk(0, cdclk_state.vco);
cdclk_state.voltage_level = skl_calc_voltage_level(cdclk_state.cdclk);
- skl_set_cdclk(dev_priv, &cdclk_state);
+ skl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
cdclk_state.vco = 0;
cdclk_state.voltage_level = skl_calc_voltage_level(cdclk_state.cdclk);
- skl_set_cdclk(dev_priv, &cdclk_state);
+ skl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
static int bxt_calc_cdclk(int min_cdclk)
}
static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
int vco = cdclk_state->vco;
bxt_de_pll_enable(dev_priv, vco);
val = divider | skl_cdclk_decimal(cdclk);
- /*
- * FIXME if only the cd2x divider needs changing, it could be done
- * without shutting off the pipe (if only one pipe is active).
- */
- val |= BXT_CDCLK_CD2X_PIPE_NONE;
+ if (pipe == INVALID_PIPE)
+ val |= BXT_CDCLK_CD2X_PIPE_NONE;
+ else
+ val |= BXT_CDCLK_CD2X_PIPE(pipe);
/*
* Disable SSA Precharge when CD clock frequency < 500 MHz,
* enable otherwise.
val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
I915_WRITE(CDCLK_CTL, val);
+ if (pipe != INVALID_PIPE)
+ intel_wait_for_vblank(dev_priv, pipe);
+
mutex_lock(&dev_priv->pcu_lock);
/*
* The timeout isn't specified, the 2ms used here is based on
}
cdclk_state.voltage_level = bxt_calc_voltage_level(cdclk_state.cdclk);
- bxt_set_cdclk(dev_priv, &cdclk_state);
+ bxt_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
cdclk_state.vco = 0;
cdclk_state.voltage_level = bxt_calc_voltage_level(cdclk_state.cdclk);
- bxt_set_cdclk(dev_priv, &cdclk_state);
+ bxt_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
static int cnl_calc_cdclk(int min_cdclk)
}
static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
int cdclk = cdclk_state->cdclk;
int vco = cdclk_state->vco;
cnl_cdclk_pll_enable(dev_priv, vco);
val = divider | skl_cdclk_decimal(cdclk);
- /*
- * FIXME if only the cd2x divider needs changing, it could be done
- * without shutting off the pipe (if only one pipe is active).
- */
- val |= BXT_CDCLK_CD2X_PIPE_NONE;
+ if (pipe == INVALID_PIPE)
+ val |= BXT_CDCLK_CD2X_PIPE_NONE;
+ else
+ val |= BXT_CDCLK_CD2X_PIPE(pipe);
I915_WRITE(CDCLK_CTL, val);
+ if (pipe != INVALID_PIPE)
+ intel_wait_for_vblank(dev_priv, pipe);
+
/* inform PCU of the change */
mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
}
static void icl_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
unsigned int cdclk = cdclk_state->cdclk;
unsigned int vco = cdclk_state->vco;
if (dev_priv->cdclk.hw.vco != vco)
cnl_cdclk_pll_enable(dev_priv, vco);
+ /*
+ * On ICL CD2X_DIV can only be 1, so we'll never end up changing the
+ * divider here synchronized to a pipe while CDCLK is on, nor will we
+ * need the corresponding vblank wait.
+ */
I915_WRITE(CDCLK_CTL, ICL_CDCLK_CD2X_PIPE_NONE |
skl_cdclk_decimal(cdclk));
sanitized_state.voltage_level =
icl_calc_voltage_level(sanitized_state.cdclk);
- icl_set_cdclk(dev_priv, &sanitized_state);
+ icl_set_cdclk(dev_priv, &sanitized_state, INVALID_PIPE);
}
/**
cdclk_state.vco = 0;
cdclk_state.voltage_level = icl_calc_voltage_level(cdclk_state.cdclk);
- icl_set_cdclk(dev_priv, &cdclk_state);
+ icl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
cdclk_state.vco = cnl_cdclk_pll_vco(dev_priv, cdclk_state.cdclk);
cdclk_state.voltage_level = cnl_calc_voltage_level(cdclk_state.cdclk);
- cnl_set_cdclk(dev_priv, &cdclk_state);
+ cnl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
cdclk_state.vco = 0;
cdclk_state.voltage_level = cnl_calc_voltage_level(cdclk_state.cdclk);
- cnl_set_cdclk(dev_priv, &cdclk_state);
+ cnl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
a->ref != b->ref;
}
+/**
+ * intel_cdclk_needs_cd2x_update - Determine if two CDCLK states require a cd2x divider update
+ * @a: first CDCLK state
+ * @b: second CDCLK state
+ *
+ * Returns:
+ * True if the CDCLK states require just a cd2x divider update, false if not.
+ */
+bool intel_cdclk_needs_cd2x_update(struct drm_i915_private *dev_priv,
+ const struct intel_cdclk_state *a,
+ const struct intel_cdclk_state *b)
+{
+ /* Older hw doesn't have the capability */
+ if (INTEL_GEN(dev_priv) < 10 && !IS_GEN9_LP(dev_priv))
+ return false;
+
+ return a->cdclk != b->cdclk &&
+ a->vco == b->vco &&
+ a->ref == b->ref;
+}
+
/**
* intel_cdclk_changed - Determine if two CDCLK states are different
* @a: first CDCLK state
* intel_set_cdclk - Push the CDCLK state to the hardware
* @dev_priv: i915 device
* @cdclk_state: new CDCLK state
+ * @pipe: pipe with which to synchronize the update
*
* Program the hardware based on the passed in CDCLK state,
* if necessary.
*/
-void intel_set_cdclk(struct drm_i915_private *dev_priv,
- const struct intel_cdclk_state *cdclk_state)
+static void intel_set_cdclk(struct drm_i915_private *dev_priv,
+ const struct intel_cdclk_state *cdclk_state,
+ enum pipe pipe)
{
if (!intel_cdclk_changed(&dev_priv->cdclk.hw, cdclk_state))
return;
intel_dump_cdclk_state(cdclk_state, "Changing CDCLK to");
- dev_priv->display.set_cdclk(dev_priv, cdclk_state);
+ dev_priv->display.set_cdclk(dev_priv, cdclk_state, pipe);
if (WARN(intel_cdclk_changed(&dev_priv->cdclk.hw, cdclk_state),
"cdclk state doesn't match!\n")) {
}
}
+/**
+ * intel_set_cdclk_pre_plane_update - Push the CDCLK state to the hardware
+ * @dev_priv: i915 device
+ * @old_state: old CDCLK state
+ * @new_state: new CDCLK state
+ * @pipe: pipe with which to synchronize the update
+ *
+ * Program the hardware before updating the HW plane state based on the passed
+ * in CDCLK state, if necessary.
+ */
+void
+intel_set_cdclk_pre_plane_update(struct drm_i915_private *dev_priv,
+ const struct intel_cdclk_state *old_state,
+ const struct intel_cdclk_state *new_state,
+ enum pipe pipe)
+{
+ if (pipe == INVALID_PIPE || old_state->cdclk <= new_state->cdclk)
+ intel_set_cdclk(dev_priv, new_state, pipe);
+}
+
+/**
+ * intel_set_cdclk_post_plane_update - Push the CDCLK state to the hardware
+ * @dev_priv: i915 device
+ * @old_state: old CDCLK state
+ * @new_state: new CDCLK state
+ * @pipe: pipe with which to synchronize the update
+ *
+ * Program the hardware after updating the HW plane state based on the passed
+ * in CDCLK state, if necessary.
+ */
+void
+intel_set_cdclk_post_plane_update(struct drm_i915_private *dev_priv,
+ const struct intel_cdclk_state *old_state,
+ const struct intel_cdclk_state *new_state,
+ enum pipe pipe)
+{
+ if (pipe != INVALID_PIPE && old_state->cdclk > new_state->cdclk)
+ intel_set_cdclk(dev_priv, new_state, pipe);
+}
+
static int intel_pixel_rate_to_cdclk(struct drm_i915_private *dev_priv,
int pixel_rate)
{
intel_state->active_crtcs = dev_priv->active_crtcs;
intel_state->cdclk.logical = dev_priv->cdclk.logical;
intel_state->cdclk.actual = dev_priv->cdclk.actual;
+ intel_state->cdclk.pipe = INVALID_PIPE;
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
if (new_crtc_state->active)
* adjusted_mode bits in the crtc directly.
*/
if (dev_priv->display.modeset_calc_cdclk) {
+ enum pipe pipe;
+
ret = dev_priv->display.modeset_calc_cdclk(state);
if (ret < 0)
return ret;
return ret;
}
+ if (is_power_of_2(intel_state->active_crtcs)) {
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *crtc_state;
+
+ pipe = ilog2(intel_state->active_crtcs);
+ crtc = &intel_get_crtc_for_pipe(dev_priv, pipe)->base;
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ if (crtc_state && needs_modeset(crtc_state))
+ pipe = INVALID_PIPE;
+ } else {
+ pipe = INVALID_PIPE;
+ }
+
/* All pipes must be switched off while we change the cdclk. */
- if (intel_cdclk_needs_modeset(&dev_priv->cdclk.actual,
- &intel_state->cdclk.actual)) {
+ if (pipe != INVALID_PIPE &&
+ intel_cdclk_needs_cd2x_update(dev_priv,
+ &dev_priv->cdclk.actual,
+ &intel_state->cdclk.actual)) {
+ ret = intel_lock_all_pipes(state);
+ if (ret < 0)
+ return ret;
+
+ intel_state->cdclk.pipe = pipe;
+ } else if (intel_cdclk_needs_modeset(&dev_priv->cdclk.actual,
+ &intel_state->cdclk.actual)) {
ret = intel_modeset_all_pipes(state);
if (ret < 0)
return ret;
+
+ intel_state->cdclk.pipe = INVALID_PIPE;
}
DRM_DEBUG_KMS("New cdclk calculated to be logical %u kHz, actual %u kHz\n",
if (intel_state->modeset) {
drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
- intel_set_cdclk(dev_priv, &dev_priv->cdclk.actual);
+ intel_set_cdclk_pre_plane_update(dev_priv,
+ &intel_state->cdclk.actual,
+ &dev_priv->cdclk.actual,
+ intel_state->cdclk.pipe);
/*
* SKL workaround: bspec recommends we disable the SAGV when we
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
dev_priv->display.update_crtcs(state);
+ if (intel_state->modeset)
+ intel_set_cdclk_post_plane_update(dev_priv,
+ &intel_state->cdclk.actual,
+ &dev_priv->cdclk.actual,
+ intel_state->cdclk.pipe);
+
/* FIXME: We should call drm_atomic_helper_commit_hw_done() here
* already, but still need the state for the delayed optimization. To
* fix this:
projects / linux-2.6-microblaze.git / commitdiff