From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Split the DPLL state computation into a separate function
from the current .get_dplls() which currently serves a dual duty
by also reserving the shared DPLLs.
v2: s/false/-EINVAL/ (Jani)
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dpll.c | 14 +-
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 291 +++++++++++++-----
drivers/gpu/drm/i915/display/intel_dpll_mgr.h | 3 +
3 files changed, 235 insertions(+), 73 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 6eef0b8a91eb..c19fb075ee6e 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -933,7 +933,17 @@ static void i8xx_compute_dpll(struct intel_crtc_state *crtc_state,
static int hsw_crtc_compute_clock(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
- return 0;
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+ struct intel_encoder *encoder =
+ intel_get_crtc_new_encoder(state, crtc_state);
+
+ if (DISPLAY_VER(dev_priv) < 11 &&
+ intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+ return 0;
+
+ return intel_compute_shared_dplls(state, crtc, encoder);
}
static int hsw_crtc_get_shared_dpll(struct intel_atomic_state *state,
@@ -1134,7 +1144,7 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state,
ilk_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
- return 0;
+ return intel_compute_shared_dplls(state, crtc, NULL);
}
static int ilk_crtc_get_shared_dpll(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 22f55574a35c..4c5c3439b745 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -90,6 +90,9 @@ struct intel_shared_dpll_funcs {
struct intel_dpll_mgr {
const struct dpll_info *dpll_info;
+ int (*compute_dplls)(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder);
int (*get_dplls)(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder);
@@ -514,6 +517,13 @@ static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
udelay(200);
}
+static int ibx_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ return 0;
+}
+
static int ibx_get_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -578,6 +588,7 @@ static const struct dpll_info pch_plls[] = {
static const struct intel_dpll_mgr pch_pll_mgr = {
.dpll_info = pch_plls,
+ .compute_dplls = ibx_compute_dpll,
.get_dplls = ibx_get_dpll,
.put_dplls = intel_put_dpll,
.dump_hw_state = ibx_dump_hw_state,
@@ -894,33 +905,35 @@ hsw_ddi_calculate_wrpll(int clock /* in Hz */,
*r2_out = best.r2;
}
-static struct intel_shared_dpll *
-hsw_ddi_wrpll_get_dpll(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
+static int
+hsw_ddi_wrpll_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
{
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
- struct intel_shared_dpll *pll;
- u32 val;
unsigned int p, n2, r2;
hsw_ddi_calculate_wrpll(crtc_state->port_clock * 1000, &r2, &n2, &p);
- val = WRPLL_PLL_ENABLE | WRPLL_REF_LCPLL |
- WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
- WRPLL_DIVIDER_POST(p);
+ crtc_state->dpll_hw_state.wrpll =
+ WRPLL_PLL_ENABLE | WRPLL_REF_LCPLL |
+ WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
+ WRPLL_DIVIDER_POST(p);
- crtc_state->dpll_hw_state.wrpll = val;
+ return 0;
+}
- pll = intel_find_shared_dpll(state, crtc,
- &crtc_state->dpll_hw_state,
- BIT(DPLL_ID_WRPLL2) |
- BIT(DPLL_ID_WRPLL1));
+static struct intel_shared_dpll *
+hsw_ddi_wrpll_get_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
+{
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
- if (!pll)
- return NULL;
-
- return pll;
+ return intel_find_shared_dpll(state, crtc,
+ &crtc_state->dpll_hw_state,
+ BIT(DPLL_ID_WRPLL2) |
+ BIT(DPLL_ID_WRPLL1));
}
static int hsw_ddi_wrpll_get_freq(struct drm_i915_private *dev_priv,
@@ -963,6 +976,24 @@ static int hsw_ddi_wrpll_get_freq(struct drm_i915_private *dev_priv,
return (refclk * n / 10) / (p * r) * 2;
}
+static int
+hsw_ddi_lcpll_compute_dpll(struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+ int clock = crtc_state->port_clock;
+
+ switch (clock / 2) {
+ case 81000:
+ case 135000:
+ case 270000:
+ return 0;
+ default:
+ drm_dbg_kms(&dev_priv->drm, "Invalid clock for DP: %d\n",
+ clock);
+ return -EINVAL;
+ }
+}
+
static struct intel_shared_dpll *
hsw_ddi_lcpll_get_dpll(struct intel_crtc_state *crtc_state)
{
@@ -982,8 +1013,7 @@ hsw_ddi_lcpll_get_dpll(struct intel_crtc_state *crtc_state)
pll_id = DPLL_ID_LCPLL_2700;
break;
default:
- drm_dbg_kms(&dev_priv->drm, "Invalid clock for DP: %d\n",
- clock);
+ MISSING_CASE(clock / 2);
return NULL;
}
@@ -1019,6 +1049,22 @@ static int hsw_ddi_lcpll_get_freq(struct drm_i915_private *i915,
return link_clock * 2;
}
+static int
+hsw_ddi_spll_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
+{
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ if (drm_WARN_ON(crtc->base.dev, crtc_state->port_clock / 2 != 135000))
+ return -EINVAL;
+
+ crtc_state->dpll_hw_state.spll =
+ SPLL_PLL_ENABLE | SPLL_FREQ_1350MHz | SPLL_REF_MUXED_SSC;
+
+ return 0;
+}
+
static struct intel_shared_dpll *
hsw_ddi_spll_get_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc)
@@ -1026,12 +1072,6 @@ hsw_ddi_spll_get_dpll(struct intel_atomic_state *state,
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
- if (drm_WARN_ON(crtc->base.dev, crtc_state->port_clock / 2 != 135000))
- return NULL;
-
- crtc_state->dpll_hw_state.spll = SPLL_PLL_ENABLE | SPLL_FREQ_1350MHz |
- SPLL_REF_MUXED_SSC;
-
return intel_find_shared_dpll(state, crtc, &crtc_state->dpll_hw_state,
BIT(DPLL_ID_SPLL));
}
@@ -1060,6 +1100,23 @@ static int hsw_ddi_spll_get_freq(struct drm_i915_private *i915,
return link_clock * 2;
}
+static int hsw_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+ return hsw_ddi_wrpll_compute_dpll(state, crtc);
+ else if (intel_crtc_has_dp_encoder(crtc_state))
+ return hsw_ddi_lcpll_compute_dpll(crtc_state);
+ else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+ return hsw_ddi_spll_compute_dpll(state, crtc);
+ else
+ return -EINVAL;
+}
+
static int hsw_get_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -1153,6 +1210,7 @@ static const struct dpll_info hsw_plls[] = {
static const struct intel_dpll_mgr hsw_pll_mgr = {
.dpll_info = hsw_plls,
+ .compute_dplls = hsw_compute_dpll,
.get_dplls = hsw_get_dpll,
.put_dplls = intel_put_dpll,
.update_ref_clks = hsw_update_dpll_ref_clks,
@@ -1741,6 +1799,21 @@ static int skl_ddi_lcpll_get_freq(struct drm_i915_private *i915,
return link_clock * 2;
}
+static int skl_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+ return skl_ddi_hdmi_pll_dividers(crtc_state);
+ else if (intel_crtc_has_dp_encoder(crtc_state))
+ return skl_ddi_dp_set_dpll_hw_state(crtc_state);
+ else
+ return -EINVAL;
+}
+
static int skl_get_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -1748,16 +1821,6 @@ static int skl_get_dpll(struct intel_atomic_state *state,
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_shared_dpll *pll;
- int ret;
-
- if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
- ret = skl_ddi_hdmi_pll_dividers(crtc_state);
- else if (intel_crtc_has_dp_encoder(crtc_state))
- ret = skl_ddi_dp_set_dpll_hw_state(crtc_state);
- else
- ret = -EINVAL;
- if (ret)
- return ret;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
pll = intel_find_shared_dpll(state, crtc,
@@ -1834,6 +1897,7 @@ static const struct dpll_info skl_plls[] = {
static const struct intel_dpll_mgr skl_pll_mgr = {
.dpll_info = skl_plls,
+ .compute_dplls = skl_compute_dpll,
.get_dplls = skl_get_dpll,
.put_dplls = intel_put_dpll,
.update_ref_clks = skl_update_dpll_ref_clks,
@@ -2225,6 +2289,21 @@ static int bxt_ddi_pll_get_freq(struct drm_i915_private *i915,
return chv_calc_dpll_params(i915->dpll.ref_clks.nssc, &clock);
}
+static int bxt_compute_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+ return bxt_ddi_hdmi_set_dpll_hw_state(crtc_state);
+ else if (intel_crtc_has_dp_encoder(crtc_state))
+ return bxt_ddi_dp_set_dpll_hw_state(crtc_state);
+ else
+ return -EINVAL;
+}
+
static int bxt_get_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -2234,16 +2313,6 @@ static int bxt_get_dpll(struct intel_atomic_state *state,
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_shared_dpll *pll;
enum intel_dpll_id id;
- int ret;
-
- if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
- ret = bxt_ddi_hdmi_set_dpll_hw_state(crtc_state);
- else if (intel_crtc_has_dp_encoder(crtc_state))
- ret = bxt_ddi_dp_set_dpll_hw_state(crtc_state);
- else
- ret = -EINVAL;
- if (ret)
- return ret;
/* 1:1 mapping between ports and PLLs */
id = (enum intel_dpll_id) encoder->port;
@@ -2302,6 +2371,7 @@ static const struct dpll_info bxt_plls[] = {
static const struct intel_dpll_mgr bxt_pll_mgr = {
.dpll_info = bxt_plls,
+ .compute_dplls = bxt_compute_dpll,
.get_dplls = bxt_get_dpll,
.put_dplls = intel_put_dpll,
.update_ref_clks = bxt_update_dpll_ref_clks,
@@ -3119,19 +3189,16 @@ static u32 intel_get_hti_plls(struct drm_i915_private *i915)
return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, i915->hti_state);
}
-static int icl_get_combo_phy_dpll(struct intel_atomic_state *state,
- struct intel_crtc *crtc,
- struct intel_encoder *encoder)
+static int icl_compute_combo_phy_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
{
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
- struct skl_wrpll_params pll_params = { };
struct icl_port_dpll *port_dpll =
&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- enum port port = encoder->port;
- unsigned long dpll_mask;
- int ret;
+ struct skl_wrpll_params pll_params = {};
+ bool ret;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
@@ -3147,6 +3214,21 @@ static int icl_get_combo_phy_dpll(struct intel_atomic_state *state,
icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
+ return 0;
+}
+
+static int icl_get_combo_phy_dpll(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+ struct icl_port_dpll *port_dpll =
+ &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+ enum port port = encoder->port;
+ unsigned long dpll_mask;
+
if (IS_ALDERLAKE_S(dev_priv)) {
dpll_mask =
BIT(DPLL_ID_DG1_DPLL3) |
@@ -3198,6 +3280,38 @@ static int icl_get_combo_phy_dpll(struct intel_atomic_state *state,
return 0;
}
+static int icl_compute_tc_phy_dplls(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+ struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+ struct icl_port_dpll *port_dpll =
+ &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+ struct skl_wrpll_params pll_params = {};
+ int ret;
+
+ port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+ ret = icl_calc_tbt_pll(crtc_state, &pll_params);
+ if (ret) {
+ drm_dbg_kms(&dev_priv->drm,
+ "Could not calculate TBT PLL state.\n");
+ return ret;
+ }
+
+ icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
+
+ port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_MG_PHY];
+ ret = icl_calc_mg_pll_state(crtc_state, &port_dpll->hw_state);
+ if (ret) {
+ drm_dbg_kms(&dev_priv->drm,
+ "Could not calculate MG PHY PLL state.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static int icl_get_tc_phy_dplls(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -3205,21 +3319,12 @@ static int icl_get_tc_phy_dplls(struct intel_atomic_state *state,
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
- struct skl_wrpll_params pll_params = { };
- struct icl_port_dpll *port_dpll;
+ struct icl_port_dpll *port_dpll =
+ &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
enum intel_dpll_id dpll_id;
int ret;
port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
- ret = icl_calc_tbt_pll(crtc_state, &pll_params);
- if (ret) {
- drm_dbg_kms(&dev_priv->drm,
- "Could not calculate TBT PLL state.\n");
- return ret;
- }
-
- icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
-
port_dpll->pll = intel_find_shared_dpll(state, crtc,
&port_dpll->hw_state,
BIT(DPLL_ID_ICL_TBTPLL));
@@ -3232,13 +3337,6 @@ static int icl_get_tc_phy_dplls(struct intel_atomic_state *state,
port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_MG_PHY];
- ret = icl_calc_mg_pll_state(crtc_state, &port_dpll->hw_state);
- if (ret) {
- drm_dbg_kms(&dev_priv->drm,
- "Could not calculate MG PHY PLL state.\n");
- goto err_unreference_tbt_pll;
- }
-
dpll_id = icl_tc_port_to_pll_id(intel_port_to_tc(dev_priv,
encoder->port));
port_dpll->pll = intel_find_shared_dpll(state, crtc,
@@ -3263,6 +3361,23 @@ static int icl_get_tc_phy_dplls(struct intel_atomic_state *state,
return ret;
}
+static int icl_compute_dplls(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+ enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+
+ if (intel_phy_is_combo(dev_priv, phy))
+ return icl_compute_combo_phy_dpll(state, crtc);
+ else if (intel_phy_is_tc(dev_priv, phy))
+ return icl_compute_tc_phy_dplls(state, crtc);
+
+ MISSING_CASE(phy);
+
+ return 0;
+}
+
static int icl_get_dplls(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
@@ -3943,6 +4058,7 @@ static const struct dpll_info icl_plls[] = {
static const struct intel_dpll_mgr icl_pll_mgr = {
.dpll_info = icl_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_active_dpll = icl_update_active_dpll,
@@ -3959,6 +4075,7 @@ static const struct dpll_info ehl_plls[] = {
static const struct intel_dpll_mgr ehl_pll_mgr = {
.dpll_info = ehl_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_ref_clks = icl_update_dpll_ref_clks,
@@ -3987,6 +4104,7 @@ static const struct dpll_info tgl_plls[] = {
static const struct intel_dpll_mgr tgl_pll_mgr = {
.dpll_info = tgl_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_active_dpll = icl_update_active_dpll,
@@ -4003,6 +4121,7 @@ static const struct dpll_info rkl_plls[] = {
static const struct intel_dpll_mgr rkl_pll_mgr = {
.dpll_info = rkl_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_ref_clks = icl_update_dpll_ref_clks,
@@ -4019,6 +4138,7 @@ static const struct dpll_info dg1_plls[] = {
static const struct intel_dpll_mgr dg1_pll_mgr = {
.dpll_info = dg1_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_ref_clks = icl_update_dpll_ref_clks,
@@ -4035,6 +4155,7 @@ static const struct dpll_info adls_plls[] = {
static const struct intel_dpll_mgr adls_pll_mgr = {
.dpll_info = adls_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_ref_clks = icl_update_dpll_ref_clks,
@@ -4054,6 +4175,7 @@ static const struct dpll_info adlp_plls[] = {
static const struct intel_dpll_mgr adlp_pll_mgr = {
.dpll_info = adlp_plls,
+ .compute_dplls = icl_compute_dplls,
.get_dplls = icl_get_dplls,
.put_dplls = icl_put_dplls,
.update_active_dpll = icl_update_active_dpll,
@@ -4118,6 +4240,33 @@ void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
BUG_ON(dev_priv->dpll.num_shared_dpll > I915_NUM_PLLS);
}
+/**
+ * intel_compute_shared_dplls - compute DPLL state CRTC and encoder combination
+ * @state: atomic state
+ * @crtc: CRTC to compute DPLLs for
+ * @encoder: encoder
+ *
+ * This function computes the DPLL state for the given CRTC and encoder.
+ *
+ * The new configuration in the atomic commit @state is made effective by
+ * calling intel_shared_dpll_swap_state().
+ *
+ * Returns:
+ * 0 on success, negative error code on falure.
+ */
+int intel_compute_shared_dplls(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+ const struct intel_dpll_mgr *dpll_mgr = dev_priv->dpll.mgr;
+
+ if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
+ return -EINVAL;
+
+ return dpll_mgr->compute_dplls(state, crtc, encoder);
+}
+
/**
* intel_reserve_shared_dplls - reserve DPLLs for CRTC and encoder combination
* @state: atomic state
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
index f7c96a1f13c8..02412bf7625c 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
@@ -336,6 +336,9 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
bool state);
#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
+int intel_compute_shared_dplls(struct intel_atomic_state *state,
+ struct intel_crtc *crtc,
+ struct intel_encoder *encoder);
int intel_reserve_shared_dplls(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder);
--
2.35.1
