The only real platform with DISPLAY_VER == 10 is GLK. We don't need to
handle CNL explicitly in intel_ddi.c.
A lot of special code for CNL can be removed. There were some
__cnl.*() functions that were created to share the implementation
between ICL and CNL. Those are now embedded in the only caller, in ICL.
Remove code and rename functions/macros accordingly to use ICL prefix
for those that are still needed.
Verified with:
make EXTRA_CFLAGS=-Wunused drivers/gpu/drm/i915/display/intel_dpll_mgr.o
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
v1.1: Rebase
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 586 +++---------------
drivers/gpu/drm/i915/i915_reg.h | 4 +-
2 files changed, 96 insertions(+), 494 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 8e2bd8fa090a..0d72917e5670 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -168,7 +168,7 @@ intel_combo_pll_enable_reg(struct drm_i915_private *i915,
else if (IS_JSL_EHL(i915) && (pll->info->id == DPLL_ID_EHL_DPLL4))
return MG_PLL_ENABLE(0);
- return CNL_DPLL_ENABLE(pll->info->id);
+ return ICL_DPLL_ENABLE(pll->info->id);
}
static i915_reg_t
@@ -2346,160 +2346,7 @@ static const struct intel_dpll_mgr bxt_pll_mgr = {
.dump_hw_state = bxt_dump_hw_state,
};
-static void cnl_ddi_pll_enable(struct drm_i915_private *dev_priv,
- struct intel_shared_dpll *pll)
-{
- const enum intel_dpll_id id = pll->info->id;
- u32 val;
-
- /* 1. Enable DPLL power in DPLL_ENABLE. */
- val = intel_de_read(dev_priv, CNL_DPLL_ENABLE(id));
- val |= PLL_POWER_ENABLE;
- intel_de_write(dev_priv, CNL_DPLL_ENABLE(id), val);
-
- /* 2. Wait for DPLL power state enabled in DPLL_ENABLE. */
- if (intel_de_wait_for_set(dev_priv, CNL_DPLL_ENABLE(id),
- PLL_POWER_STATE, 5))
- drm_err(&dev_priv->drm, "PLL %d Power not enabled\n", id);
-
- /*
- * 3. Configure DPLL_CFGCR0 to set SSC enable/disable,
- * select DP mode, and set DP link rate.
- */
- val = pll->state.hw_state.cfgcr0;
- intel_de_write(dev_priv, CNL_DPLL_CFGCR0(id), val);
-
- /* 4. Reab back to ensure writes completed */
- intel_de_posting_read(dev_priv, CNL_DPLL_CFGCR0(id));
-
- /* 3. Configure DPLL_CFGCR0 */
- /* Avoid touch CFGCR1 if HDMI mode is not enabled */
- if (pll->state.hw_state.cfgcr0 & DPLL_CFGCR0_HDMI_MODE) {
- val = pll->state.hw_state.cfgcr1;
- intel_de_write(dev_priv, CNL_DPLL_CFGCR1(id), val);
- /* 4. Reab back to ensure writes completed */
- intel_de_posting_read(dev_priv, CNL_DPLL_CFGCR1(id));
- }
-
- /*
- * 5. If the frequency will result in a change to the voltage
- * requirement, follow the Display Voltage Frequency Switching
- * Sequence Before Frequency Change
- *
- * Note: DVFS is actually handled via the cdclk code paths,
- * hence we do nothing here.
- */
-
- /* 6. Enable DPLL in DPLL_ENABLE. */
- val = intel_de_read(dev_priv, CNL_DPLL_ENABLE(id));
- val |= PLL_ENABLE;
- intel_de_write(dev_priv, CNL_DPLL_ENABLE(id), val);
-
- /* 7. Wait for PLL lock status in DPLL_ENABLE. */
- if (intel_de_wait_for_set(dev_priv, CNL_DPLL_ENABLE(id), PLL_LOCK, 5))
- drm_err(&dev_priv->drm, "PLL %d not locked\n", id);
-
- /*
- * 8. If the frequency will result in a change to the voltage
- * requirement, follow the Display Voltage Frequency Switching
- * Sequence After Frequency Change
- *
- * Note: DVFS is actually handled via the cdclk code paths,
- * hence we do nothing here.
- */
-
- /*
- * 9. turn on the clock for the DDI and map the DPLL to the DDI
- * Done at intel_ddi_clk_select
- */
-}
-
-static void cnl_ddi_pll_disable(struct drm_i915_private *dev_priv,
- struct intel_shared_dpll *pll)
-{
- const enum intel_dpll_id id = pll->info->id;
- u32 val;
-
- /*
- * 1. Configure DPCLKA_CFGCR0 to turn off the clock for the DDI.
- * Done at intel_ddi_post_disable
- */
-
- /*
- * 2. If the frequency will result in a change to the voltage
- * requirement, follow the Display Voltage Frequency Switching
- * Sequence Before Frequency Change
- *
- * Note: DVFS is actually handled via the cdclk code paths,
- * hence we do nothing here.
- */
-
- /* 3. Disable DPLL through DPLL_ENABLE. */
- val = intel_de_read(dev_priv, CNL_DPLL_ENABLE(id));
- val &= ~PLL_ENABLE;
- intel_de_write(dev_priv, CNL_DPLL_ENABLE(id), val);
-
- /* 4. Wait for PLL not locked status in DPLL_ENABLE. */
- if (intel_de_wait_for_clear(dev_priv, CNL_DPLL_ENABLE(id), PLL_LOCK, 5))
- drm_err(&dev_priv->drm, "PLL %d locked\n", id);
-
- /*
- * 5. If the frequency will result in a change to the voltage
- * requirement, follow the Display Voltage Frequency Switching
- * Sequence After Frequency Change
- *
- * Note: DVFS is actually handled via the cdclk code paths,
- * hence we do nothing here.
- */
-
- /* 6. Disable DPLL power in DPLL_ENABLE. */
- val = intel_de_read(dev_priv, CNL_DPLL_ENABLE(id));
- val &= ~PLL_POWER_ENABLE;
- intel_de_write(dev_priv, CNL_DPLL_ENABLE(id), val);
-
- /* 7. Wait for DPLL power state disabled in DPLL_ENABLE. */
- if (intel_de_wait_for_clear(dev_priv, CNL_DPLL_ENABLE(id),
- PLL_POWER_STATE, 5))
- drm_err(&dev_priv->drm, "PLL %d Power not disabled\n", id);
-}
-
-static bool cnl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
- struct intel_shared_dpll *pll,
- struct intel_dpll_hw_state *hw_state)
-{
- const enum intel_dpll_id id = pll->info->id;
- intel_wakeref_t wakeref;
- u32 val;
- bool ret;
-
- wakeref = intel_display_power_get_if_enabled(dev_priv,
- POWER_DOMAIN_DISPLAY_CORE);
- if (!wakeref)
- return false;
-
- ret = false;
-
- val = intel_de_read(dev_priv, CNL_DPLL_ENABLE(id));
- if (!(val & PLL_ENABLE))
- goto out;
-
- val = intel_de_read(dev_priv, CNL_DPLL_CFGCR0(id));
- hw_state->cfgcr0 = val;
-
- /* avoid reading back stale values if HDMI mode is not enabled */
- if (val & DPLL_CFGCR0_HDMI_MODE) {
- hw_state->cfgcr1 = intel_de_read(dev_priv,
- CNL_DPLL_CFGCR1(id));
- }
- ret = true;
-
-out:
- intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
-
- return ret;
-}
-
-static void cnl_wrpll_get_multipliers(int bestdiv, int *pdiv,
+static void icl_wrpll_get_multipliers(int bestdiv, int *pdiv,
int *qdiv, int *kdiv)
{
/* even dividers */
@@ -2538,7 +2385,7 @@ static void cnl_wrpll_get_multipliers(int bestdiv, int *pdiv,
}
}
-static void cnl_wrpll_params_populate(struct skl_wrpll_params *params,
+static void icl_wrpll_params_populate(struct skl_wrpll_params *params,
u32 dco_freq, u32 ref_freq,
int pdiv, int qdiv, int kdiv)
{
@@ -2586,86 +2433,6 @@ static void cnl_wrpll_params_populate(struct skl_wrpll_params *params,
params->dco_fraction = dco & 0x7fff;
}
-static bool
-__cnl_ddi_calculate_wrpll(struct intel_crtc_state *crtc_state,
- struct skl_wrpll_params *wrpll_params,
- int ref_clock)
-{
- u32 afe_clock = crtc_state->port_clock * 5;
- u32 dco_min = 7998000;
- u32 dco_max = 10000000;
- u32 dco_mid = (dco_min + dco_max) / 2;
- static const int dividers[] = { 2, 4, 6, 8, 10, 12, 14, 16,
- 18, 20, 24, 28, 30, 32, 36, 40,
- 42, 44, 48, 50, 52, 54, 56, 60,
- 64, 66, 68, 70, 72, 76, 78, 80,
- 84, 88, 90, 92, 96, 98, 100, 102,
- 3, 5, 7, 9, 15, 21 };
- u32 dco, best_dco = 0, dco_centrality = 0;
- u32 best_dco_centrality = U32_MAX; /* Spec meaning of 999999 MHz */
- int d, best_div = 0, pdiv = 0, qdiv = 0, kdiv = 0;
-
- for (d = 0; d < ARRAY_SIZE(dividers); d++) {
- dco = afe_clock * dividers[d];
-
- if ((dco <= dco_max) && (dco >= dco_min)) {
- dco_centrality = abs(dco - dco_mid);
-
- if (dco_centrality < best_dco_centrality) {
- best_dco_centrality = dco_centrality;
- best_div = dividers[d];
- best_dco = dco;
- }
- }
- }
-
- if (best_div == 0)
- return false;
-
- cnl_wrpll_get_multipliers(best_div, &pdiv, &qdiv, &kdiv);
- cnl_wrpll_params_populate(wrpll_params, best_dco, ref_clock,
- pdiv, qdiv, kdiv);
-
- return true;
-}
-
-static bool
-cnl_ddi_calculate_wrpll(struct intel_crtc_state *crtc_state,
- struct skl_wrpll_params *wrpll_params)
-{
- struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
-
- return __cnl_ddi_calculate_wrpll(crtc_state, wrpll_params,
- i915->dpll.ref_clks.nssc);
-}
-
-static bool cnl_ddi_hdmi_pll_dividers(struct intel_crtc_state *crtc_state)
-{
- u32 cfgcr0, cfgcr1;
- struct skl_wrpll_params wrpll_params = { 0, };
-
- cfgcr0 = DPLL_CFGCR0_HDMI_MODE;
-
- if (!cnl_ddi_calculate_wrpll(crtc_state, &wrpll_params))
- return false;
-
- cfgcr0 |= DPLL_CFGCR0_DCO_FRACTION(wrpll_params.dco_fraction) |
- wrpll_params.dco_integer;
-
- cfgcr1 = DPLL_CFGCR1_QDIV_RATIO(wrpll_params.qdiv_ratio) |
- DPLL_CFGCR1_QDIV_MODE(wrpll_params.qdiv_mode) |
- DPLL_CFGCR1_KDIV(wrpll_params.kdiv) |
- DPLL_CFGCR1_PDIV(wrpll_params.pdiv) |
- DPLL_CFGCR1_CENTRAL_FREQ;
-
- memset(&crtc_state->dpll_hw_state, 0,
- sizeof(crtc_state->dpll_hw_state));
-
- crtc_state->dpll_hw_state.cfgcr0 = cfgcr0;
- crtc_state->dpll_hw_state.cfgcr1 = cfgcr1;
- return true;
-}
-
/*
* Display WA #22010492432: ehl, tgl, adl-p
* Program half of the nominal DCO divider fraction value.
@@ -2679,256 +2446,6 @@ ehl_combo_pll_div_frac_wa_needed(struct drm_i915_private *i915)
i915->dpll.ref_clks.nssc == 38400;
}
-static int __cnl_ddi_wrpll_get_freq(struct drm_i915_private *dev_priv,
- const struct intel_shared_dpll *pll,
- const struct intel_dpll_hw_state *pll_state,
- int ref_clock)
-{
- u32 dco_fraction;
- u32 p0, p1, p2, dco_freq;
-
- p0 = pll_state->cfgcr1 & DPLL_CFGCR1_PDIV_MASK;
- p2 = pll_state->cfgcr1 & DPLL_CFGCR1_KDIV_MASK;
-
- if (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1))
- p1 = (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >>
- DPLL_CFGCR1_QDIV_RATIO_SHIFT;
- else
- p1 = 1;
-
-
- switch (p0) {
- case DPLL_CFGCR1_PDIV_2:
- p0 = 2;
- break;
- case DPLL_CFGCR1_PDIV_3:
- p0 = 3;
- break;
- case DPLL_CFGCR1_PDIV_5:
- p0 = 5;
- break;
- case DPLL_CFGCR1_PDIV_7:
- p0 = 7;
- break;
- }
-
- switch (p2) {
- case DPLL_CFGCR1_KDIV_1:
- p2 = 1;
- break;
- case DPLL_CFGCR1_KDIV_2:
- p2 = 2;
- break;
- case DPLL_CFGCR1_KDIV_3:
- p2 = 3;
- break;
- }
-
- dco_freq = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) *
- ref_clock;
-
- dco_fraction = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
- DPLL_CFGCR0_DCO_FRACTION_SHIFT;
-
- if (ehl_combo_pll_div_frac_wa_needed(dev_priv))
- dco_fraction *= 2;
-
- dco_freq += (dco_fraction * ref_clock) / 0x8000;
-
- if (drm_WARN_ON(&dev_priv->drm, p0 == 0 || p1 == 0 || p2 == 0))
- return 0;
-
- return dco_freq / (p0 * p1 * p2 * 5);
-}
-
-static int cnl_ddi_wrpll_get_freq(struct drm_i915_private *i915,
- const struct intel_shared_dpll *pll,
- const struct intel_dpll_hw_state *pll_state)
-{
- return __cnl_ddi_wrpll_get_freq(i915, pll, pll_state,
- i915->dpll.ref_clks.nssc);
-}
-
-static bool
-cnl_ddi_dp_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
-{
- u32 cfgcr0;
-
- cfgcr0 = DPLL_CFGCR0_SSC_ENABLE;
-
- switch (crtc_state->port_clock / 2) {
- case 81000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_810;
- break;
- case 135000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_1350;
- break;
- case 270000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_2700;
- break;
- /* eDP 1.4 rates */
- case 162000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_1620;
- break;
- case 108000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_1080;
- break;
- case 216000:
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_2160;
- break;
- case 324000:
- /* Some SKUs may require elevated I/O voltage to support this */
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_3240;
- break;
- case 405000:
- /* Some SKUs may require elevated I/O voltage to support this */
- cfgcr0 |= DPLL_CFGCR0_LINK_RATE_4050;
- break;
- }
-
- memset(&crtc_state->dpll_hw_state, 0,
- sizeof(crtc_state->dpll_hw_state));
-
- crtc_state->dpll_hw_state.cfgcr0 = cfgcr0;
-
- return true;
-}
-
-static int cnl_ddi_lcpll_get_freq(struct drm_i915_private *i915,
- const struct intel_shared_dpll *pll,
- const struct intel_dpll_hw_state *pll_state)
-{
- int link_clock = 0;
-
- switch (pll_state->cfgcr0 & DPLL_CFGCR0_LINK_RATE_MASK) {
- case DPLL_CFGCR0_LINK_RATE_810:
- link_clock = 81000;
- break;
- case DPLL_CFGCR0_LINK_RATE_1080:
- link_clock = 108000;
- break;
- case DPLL_CFGCR0_LINK_RATE_1350:
- link_clock = 135000;
- break;
- case DPLL_CFGCR0_LINK_RATE_1620:
- link_clock = 162000;
- break;
- case DPLL_CFGCR0_LINK_RATE_2160:
- link_clock = 216000;
- break;
- case DPLL_CFGCR0_LINK_RATE_2700:
- link_clock = 270000;
- break;
- case DPLL_CFGCR0_LINK_RATE_3240:
- link_clock = 324000;
- break;
- case DPLL_CFGCR0_LINK_RATE_4050:
- link_clock = 405000;
- break;
- default:
- drm_WARN(&i915->drm, 1, "Unsupported link rate\n");
- break;
- }
-
- return link_clock * 2;
-}
-
-static bool cnl_get_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);
- struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
- struct intel_shared_dpll *pll;
- bool bret;
-
- if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
- bret = cnl_ddi_hdmi_pll_dividers(crtc_state);
- if (!bret) {
- drm_dbg_kms(&i915->drm,
- "Could not get HDMI pll dividers.\n");
- return false;
- }
- } else if (intel_crtc_has_dp_encoder(crtc_state)) {
- bret = cnl_ddi_dp_set_dpll_hw_state(crtc_state);
- if (!bret) {
- drm_dbg_kms(&i915->drm,
- "Could not set DP dpll HW state.\n");
- return false;
- }
- } else {
- drm_dbg_kms(&i915->drm,
- "Skip DPLL setup for output_types 0x%x\n",
- crtc_state->output_types);
- return false;
- }
-
- pll = intel_find_shared_dpll(state, crtc,
- &crtc_state->dpll_hw_state,
- BIT(DPLL_ID_SKL_DPLL2) |
- BIT(DPLL_ID_SKL_DPLL1) |
- BIT(DPLL_ID_SKL_DPLL0));
- if (!pll) {
- drm_dbg_kms(&i915->drm, "No PLL selected\n");
- return false;
- }
-
- intel_reference_shared_dpll(state, crtc,
- pll, &crtc_state->dpll_hw_state);
-
- crtc_state->shared_dpll = pll;
-
- return true;
-}
-
-static int cnl_ddi_pll_get_freq(struct drm_i915_private *i915,
- const struct intel_shared_dpll *pll,
- const struct intel_dpll_hw_state *pll_state)
-{
- if (pll_state->cfgcr0 & DPLL_CFGCR0_HDMI_MODE)
- return cnl_ddi_wrpll_get_freq(i915, pll, pll_state);
- else
- return cnl_ddi_lcpll_get_freq(i915, pll, pll_state);
-}
-
-static void cnl_update_dpll_ref_clks(struct drm_i915_private *i915)
-{
- /* No SSC reference */
- i915->dpll.ref_clks.nssc = i915->cdclk.hw.ref;
-}
-
-static void cnl_dump_hw_state(struct drm_i915_private *dev_priv,
- const struct intel_dpll_hw_state *hw_state)
-{
- drm_dbg_kms(&dev_priv->drm, "dpll_hw_state: "
- "cfgcr0: 0x%x, cfgcr1: 0x%x\n",
- hw_state->cfgcr0,
- hw_state->cfgcr1);
-}
-
-static const struct intel_shared_dpll_funcs cnl_ddi_pll_funcs = {
- .enable = cnl_ddi_pll_enable,
- .disable = cnl_ddi_pll_disable,
- .get_hw_state = cnl_ddi_pll_get_hw_state,
- .get_freq = cnl_ddi_pll_get_freq,
-};
-
-static const struct dpll_info cnl_plls[] = {
- { "DPLL 0", &cnl_ddi_pll_funcs, DPLL_ID_SKL_DPLL0, 0 },
- { "DPLL 1", &cnl_ddi_pll_funcs, DPLL_ID_SKL_DPLL1, 0 },
- { "DPLL 2", &cnl_ddi_pll_funcs, DPLL_ID_SKL_DPLL2, 0 },
- { },
-};
-
-static const struct intel_dpll_mgr cnl_pll_mgr = {
- .dpll_info = cnl_plls,
- .get_dplls = cnl_get_dpll,
- .put_dplls = intel_put_dpll,
- .update_ref_clks = cnl_update_dpll_ref_clks,
- .dump_hw_state = cnl_dump_hw_state,
-};
-
struct icl_combo_pll_params {
int clock;
struct skl_wrpll_params wrpll;
@@ -3105,17 +2622,104 @@ icl_calc_wrpll(struct intel_crtc_state *crtc_state,
struct skl_wrpll_params *wrpll_params)
{
struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+ int ref_clock = icl_wrpll_ref_clock(i915);
+ u32 afe_clock = crtc_state->port_clock * 5;
+ u32 dco_min = 7998000;
+ u32 dco_max = 10000000;
+ u32 dco_mid = (dco_min + dco_max) / 2;
+ static const int dividers[] = { 2, 4, 6, 8, 10, 12, 14, 16,
+ 18, 20, 24, 28, 30, 32, 36, 40,
+ 42, 44, 48, 50, 52, 54, 56, 60,
+ 64, 66, 68, 70, 72, 76, 78, 80,
+ 84, 88, 90, 92, 96, 98, 100, 102,
+ 3, 5, 7, 9, 15, 21 };
+ u32 dco, best_dco = 0, dco_centrality = 0;
+ u32 best_dco_centrality = U32_MAX; /* Spec meaning of 999999 MHz */
+ int d, best_div = 0, pdiv = 0, qdiv = 0, kdiv = 0;
+
+ for (d = 0; d < ARRAY_SIZE(dividers); d++) {
+ dco = afe_clock * dividers[d];
+
+ if (dco <= dco_max && dco >= dco_min) {
+ dco_centrality = abs(dco - dco_mid);
- return __cnl_ddi_calculate_wrpll(crtc_state, wrpll_params,
- icl_wrpll_ref_clock(i915));
+ if (dco_centrality < best_dco_centrality) {
+ best_dco_centrality = dco_centrality;
+ best_div = dividers[d];
+ best_dco = dco;
+ }
+ }
+ }
+
+ if (best_div == 0)
+ return false;
+
+ icl_wrpll_get_multipliers(best_div, &pdiv, &qdiv, &kdiv);
+ icl_wrpll_params_populate(wrpll_params, best_dco, ref_clock,
+ pdiv, qdiv, kdiv);
+
+ return true;
}
static int icl_ddi_combo_pll_get_freq(struct drm_i915_private *i915,
const struct intel_shared_dpll *pll,
const struct intel_dpll_hw_state *pll_state)
{
- return __cnl_ddi_wrpll_get_freq(i915, pll, pll_state,
- icl_wrpll_ref_clock(i915));
+ int ref_clock = icl_wrpll_ref_clock(i915);
+ u32 dco_fraction;
+ u32 p0, p1, p2, dco_freq;
+
+ p0 = pll_state->cfgcr1 & DPLL_CFGCR1_PDIV_MASK;
+ p2 = pll_state->cfgcr1 & DPLL_CFGCR1_KDIV_MASK;
+
+ if (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1))
+ p1 = (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >>
+ DPLL_CFGCR1_QDIV_RATIO_SHIFT;
+ else
+ p1 = 1;
+
+ switch (p0) {
+ case DPLL_CFGCR1_PDIV_2:
+ p0 = 2;
+ break;
+ case DPLL_CFGCR1_PDIV_3:
+ p0 = 3;
+ break;
+ case DPLL_CFGCR1_PDIV_5:
+ p0 = 5;
+ break;
+ case DPLL_CFGCR1_PDIV_7:
+ p0 = 7;
+ break;
+ }
+
+ switch (p2) {
+ case DPLL_CFGCR1_KDIV_1:
+ p2 = 1;
+ break;
+ case DPLL_CFGCR1_KDIV_2:
+ p2 = 2;
+ break;
+ case DPLL_CFGCR1_KDIV_3:
+ p2 = 3;
+ break;
+ }
+
+ dco_freq = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) *
+ ref_clock;
+
+ dco_fraction = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
+ DPLL_CFGCR0_DCO_FRACTION_SHIFT;
+
+ if (ehl_combo_pll_div_frac_wa_needed(i915))
+ dco_fraction *= 2;
+
+ dco_freq += (dco_fraction * ref_clock) / 0x8000;
+
+ if (drm_WARN_ON(&i915->drm, p0 == 0 || p1 == 0 || p2 == 0))
+ return 0;
+
+ return dco_freq / (p0 * p1 * p2 * 5);
}
static void icl_calc_dpll_state(struct drm_i915_private *i915,
@@ -4479,8 +4083,6 @@ void intel_shared_dpll_init(struct drm_device *dev)
dpll_mgr = &ehl_pll_mgr;
else if (DISPLAY_VER(dev_priv) >= 11)
dpll_mgr = &icl_pll_mgr;
- else if (IS_CANNONLAKE(dev_priv))
- dpll_mgr = &cnl_pll_mgr;
else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
dpll_mgr = &bxt_pll_mgr;
else if (DISPLAY_VER(dev_priv) == 9)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 88dd9ddc9271..7ddfb25e34fc 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10601,7 +10601,7 @@ enum skl_power_gate {
ADLS_DPCLKA_DDIJ_SEL_MASK, \
ADLS_DPCLKA_DDIK_SEL_MASK)
-/* CNL PLL */
+/* ICL PLL */
#define DPLL0_ENABLE 0x46010
#define DPLL1_ENABLE 0x46014
#define _ADLS_DPLL2_ENABLE 0x46018
@@ -10610,7 +10610,7 @@ enum skl_power_gate {
#define PLL_LOCK (1 << 30)
#define PLL_POWER_ENABLE (1 << 27)
#define PLL_POWER_STATE (1 << 26)
-#define CNL_DPLL_ENABLE(pll) _MMIO_PLL3(pll, DPLL0_ENABLE, DPLL1_ENABLE, \
+#define ICL_DPLL_ENABLE(pll) _MMIO_PLL3(pll, DPLL0_ENABLE, DPLL1_ENABLE, \
_ADLS_DPLL2_ENABLE, _ADLS_DPLL3_ENABLE)
#define TBT_PLL_ENABLE _MMIO(0x46020)
--
2.31.1
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