@@ -1711,6 +1711,8 @@ struct drm_i915_private {
struct intel_cdclk_state actual;
/* The current hardware cdclk state */
struct intel_cdclk_state hw;
+
+ int force_min_cdclk;
} cdclk;
/**
@@ -1831,6 +1833,7 @@ struct drm_i915_private {
*
*/
struct mutex av_mutex;
+ int audio_power_refcount;
struct {
struct list_head list;
@@ -730,13 +730,70 @@ void intel_init_audio_hooks(struct drm_i915_private *dev_priv)
}
}
+static void glk_force_audio_cdclk(struct drm_i915_private *dev_priv,
+ bool enable)
+{
+ struct drm_modeset_acquire_ctx ctx;
+ struct drm_atomic_state *state;
+ int ret;
+
+ drm_modeset_acquire_init(&ctx, 0);
+ state = drm_atomic_state_alloc(&dev_priv->drm);
+ if (WARN_ON(!state))
+ return;
+
+ state->acquire_ctx = &ctx;
+
+retry:
+ to_intel_atomic_state(state)->cdclk.force_min_cdclk_changed = true;
+ to_intel_atomic_state(state)->cdclk.force_min_cdclk =
+ enable ? 2 * 96000 : 0;
+
+ /*
+ * Protects dev_priv->cdclk.force_min_cdclk
+ * Need to lock this here in case we have no active pipes
+ * and thus wouldn't lock it during the commit otherwise.
+ */
+ ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
+ &ctx);
+ if (!ret)
+ ret = drm_atomic_commit(state);
+
+ if (ret == -EDEADLK) {
+ drm_atomic_state_clear(state);
+ drm_modeset_backoff(&ctx);
+ goto retry;
+ }
+
+ WARN_ON(ret);
+
+ drm_atomic_state_put(state);
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+}
+
static void i915_audio_component_get_power(struct device *kdev)
{
+ struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+
intel_display_power_get(kdev_to_i915(kdev), POWER_DOMAIN_AUDIO);
+
+ /* Force CDCLK to 2*BCLK as long as we need audio to be powered. */
+ if (dev_priv->audio_power_refcount++ == 0)
+ if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+ glk_force_audio_cdclk(dev_priv, true);
}
static void i915_audio_component_put_power(struct device *kdev)
{
+ struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+
+ /* Stop forcing CDCLK to 2*BCLK if no need for audio to be powered. */
+ if (--dev_priv->audio_power_refcount == 0)
+ if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+ glk_force_audio_cdclk(dev_priv, false);
+
intel_display_power_put(kdev_to_i915(kdev), POWER_DOMAIN_AUDIO);
}
@@ -2143,19 +2143,8 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
/*
* According to BSpec, "The CD clock frequency must be at least twice
* the frequency of the Azalia BCLK." and BCLK is 96 MHz by default.
- *
- * FIXME: Check the actual, not default, BCLK being used.
- *
- * FIXME: This does not depend on ->has_audio because the higher CDCLK
- * is required for audio probe, also when there are no audio capable
- * displays connected at probe time. This leads to unnecessarily high
- * CDCLK when audio is not required.
- *
- * FIXME: This limit is only applied when there are displays connected
- * at probe time. If we probe without displays, we'll still end up using
- * the platform minimum CDCLK, failing audio probe.
*/
- if (INTEL_GEN(dev_priv) >= 9)
+ if (crtc_state->has_audio && INTEL_GEN(dev_priv) >= 9)
min_cdclk = max(2 * 96000, min_cdclk);
/*
@@ -2195,7 +2184,7 @@ static int intel_compute_min_cdclk(struct drm_atomic_state *state)
intel_state->min_cdclk[i] = min_cdclk;
}
- min_cdclk = 0;
+ min_cdclk = intel_state->cdclk.force_min_cdclk;
for_each_pipe(dev_priv, pipe)
min_cdclk = max(intel_state->min_cdclk[pipe], min_cdclk);
@@ -2256,7 +2245,8 @@ static int vlv_modeset_calc_cdclk(struct drm_atomic_state *state)
vlv_calc_voltage_level(dev_priv, cdclk);
if (!intel_state->active_crtcs) {
- cdclk = vlv_calc_cdclk(dev_priv, 0);
+ cdclk = vlv_calc_cdclk(dev_priv,
+ intel_state->cdclk.force_min_cdclk);
intel_state->cdclk.actual.cdclk = cdclk;
intel_state->cdclk.actual.voltage_level =
@@ -2289,7 +2279,7 @@ static int bdw_modeset_calc_cdclk(struct drm_atomic_state *state)
bdw_calc_voltage_level(cdclk);
if (!intel_state->active_crtcs) {
- cdclk = bdw_calc_cdclk(0);
+ cdclk = bdw_calc_cdclk(intel_state->cdclk.force_min_cdclk);
intel_state->cdclk.actual.cdclk = cdclk;
intel_state->cdclk.actual.voltage_level =
@@ -2361,7 +2351,7 @@ static int skl_modeset_calc_cdclk(struct drm_atomic_state *state)
skl_calc_voltage_level(cdclk);
if (!intel_state->active_crtcs) {
- cdclk = skl_calc_cdclk(0, vco);
+ cdclk = skl_calc_cdclk(intel_state->cdclk.force_min_cdclk, vco);
intel_state->cdclk.actual.vco = vco;
intel_state->cdclk.actual.cdclk = cdclk;
@@ -2400,10 +2390,10 @@ static int bxt_modeset_calc_cdclk(struct drm_atomic_state *state)
if (!intel_state->active_crtcs) {
if (IS_GEMINILAKE(dev_priv)) {
- cdclk = glk_calc_cdclk(0);
+ cdclk = glk_calc_cdclk(intel_state->cdclk.force_min_cdclk);
vco = glk_de_pll_vco(dev_priv, cdclk);
} else {
- cdclk = bxt_calc_cdclk(0);
+ cdclk = bxt_calc_cdclk(intel_state->cdclk.force_min_cdclk);
vco = bxt_de_pll_vco(dev_priv, cdclk);
}
@@ -2439,7 +2429,7 @@ static int cnl_modeset_calc_cdclk(struct drm_atomic_state *state)
cnl_compute_min_voltage_level(intel_state));
if (!intel_state->active_crtcs) {
- cdclk = cnl_calc_cdclk(0);
+ cdclk = cnl_calc_cdclk(intel_state->cdclk.force_min_cdclk);
vco = cnl_cdclk_pll_vco(dev_priv, cdclk);
intel_state->cdclk.actual.vco = vco;
@@ -2472,7 +2462,7 @@ static int icl_modeset_calc_cdclk(struct drm_atomic_state *state)
intel_state->cdclk.logical.cdclk = cdclk;
if (!intel_state->active_crtcs) {
- cdclk = icl_calc_cdclk(0, ref);
+ cdclk = icl_calc_cdclk(intel_state->cdclk.force_min_cdclk, ref);
vco = icl_calc_cdclk_pll_vco(dev_priv, cdclk);
intel_state->cdclk.actual.vco = vco;
@@ -12106,6 +12106,11 @@ static int intel_modeset_checks(struct drm_atomic_state *state)
return -EINVAL;
}
+ /* keep the current setting */
+ if (!intel_state->cdclk.force_min_cdclk_changed)
+ intel_state->cdclk.force_min_cdclk =
+ dev_priv->cdclk.force_min_cdclk;
+
intel_state->modeset = true;
intel_state->active_crtcs = dev_priv->active_crtcs;
intel_state->cdclk.logical = dev_priv->cdclk.logical;
@@ -12201,7 +12206,7 @@ static int intel_atomic_check(struct drm_device *dev,
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state, *crtc_state;
int ret, i;
- bool any_ms = false;
+ bool any_ms = intel_state->cdclk.force_min_cdclk_changed;
/* Catch I915_MODE_FLAG_INHERITED */
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
@@ -12744,6 +12749,8 @@ static int intel_atomic_commit(struct drm_device *dev,
dev_priv->active_crtcs = intel_state->active_crtcs;
dev_priv->cdclk.logical = intel_state->cdclk.logical;
dev_priv->cdclk.actual = intel_state->cdclk.actual;
+ dev_priv->cdclk.force_min_cdclk =
+ intel_state->cdclk.force_min_cdclk;
}
drm_atomic_state_get(state);
@@ -460,6 +460,9 @@ struct intel_atomic_state {
* state only when all crtc's are DPMS off.
*/
struct intel_cdclk_state actual;
+
+ int force_min_cdclk;
+ bool force_min_cdclk_changed;
} cdclk;
bool dpll_set, modeset;