From 339c7bf126bcb7ab9c606e6528242550fc01111e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Thu, 15 Jul 2021 12:35:26 +0300
Subject: drm/i915: Call {vlv,chv}_prepare_pll() from {vlv,chv}_enable_pll()
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Git-commit: a338847abc8e2872c8ec9215567d10c3ca3afcc0
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
We always call the vlv/chv prepare_pll() just before enable_pll().
Move the calls into the enable_pll() funcs. We can also
consolidate the DPLL_VCO_ENABLE checks while at it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210715093530.31711-10-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_display.c | 7 +-
drivers/gpu/drm/i915/display/intel_dpll.c | 245 +++++++++----------
drivers/gpu/drm/i915/display/intel_dpll.h | 9 +-
3 files changed, 125 insertions(+), 136 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 181bc5d81795..6f89d336a0b4 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3576,13 +3576,10 @@ static void valleyview_crtc_enable(struct intel_atomic_state *state,
intel_encoders_pre_pll_enable(state, crtc);
- if (IS_CHERRYVIEW(dev_priv)) {
- chv_prepare_pll(new_crtc_state);
+ if (IS_CHERRYVIEW(dev_priv))
chv_enable_pll(new_crtc_state);
- } else {
- vlv_prepare_pll(new_crtc_state);
+ else
vlv_enable_pll(new_crtc_state);
- }
intel_encoders_pre_enable(state, crtc);
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 09a57ce86676..13d99f3e4d75 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -1467,112 +1467,7 @@ static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv,
vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
}
-static void _vlv_enable_pll(const struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- enum pipe pipe = crtc->pipe;
-
- intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
- intel_de_posting_read(dev_priv, DPLL(pipe));
- udelay(150);
-
- if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
- drm_err(&dev_priv->drm, "DPLL %d failed to lock\n", pipe);
-}
-
-void vlv_enable_pll(const struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- enum pipe pipe = crtc->pipe;
-
- assert_pipe_disabled(dev_priv, crtc_state->cpu_transcoder);
-
- /* PLL is protected by panel, make sure we can write it */
- assert_panel_unlocked(dev_priv, pipe);
-
- if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
- _vlv_enable_pll(crtc_state);
-
- intel_de_write(dev_priv, DPLL_MD(pipe),
- crtc_state->dpll_hw_state.dpll_md);
- intel_de_posting_read(dev_priv, DPLL_MD(pipe));
-}
-
-
-static void _chv_enable_pll(const struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- enum pipe pipe = crtc->pipe;
- enum dpio_channel port = vlv_pipe_to_channel(pipe);
- u32 tmp;
-
- vlv_dpio_get(dev_priv);
-
- /* Enable back the 10bit clock to display controller */
- tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
- tmp |= DPIO_DCLKP_EN;
- vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
-
- vlv_dpio_put(dev_priv);
-
- /*
- * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
- */
- udelay(1);
-
- /* Enable PLL */
- intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
-
- /* Check PLL is locked */
- if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
- drm_err(&dev_priv->drm, "PLL %d failed to lock\n", pipe);
-}
-
-void chv_enable_pll(const struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- enum pipe pipe = crtc->pipe;
-
- assert_pipe_disabled(dev_priv, crtc_state->cpu_transcoder);
-
- /* PLL is protected by panel, make sure we can write it */
- assert_panel_unlocked(dev_priv, pipe);
-
- if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
- _chv_enable_pll(crtc_state);
-
- if (pipe != PIPE_A) {
- /*
- * WaPixelRepeatModeFixForC0:chv
- *
- * DPLLCMD is AWOL. Use chicken bits to propagate
- * the value from DPLLBMD to either pipe B or C.
- */
- intel_de_write(dev_priv, CBR4_VLV, CBR_DPLLBMD_PIPE(pipe));
- intel_de_write(dev_priv, DPLL_MD(PIPE_B),
- crtc_state->dpll_hw_state.dpll_md);
- intel_de_write(dev_priv, CBR4_VLV, 0);
- dev_priv->chv_dpll_md[pipe] = crtc_state->dpll_hw_state.dpll_md;
-
- /*
- * DPLLB VGA mode also seems to cause problems.
- * We should always have it disabled.
- */
- drm_WARN_ON(&dev_priv->drm,
- (intel_de_read(dev_priv, DPLL(PIPE_B)) &
- DPLL_VGA_MODE_DIS) == 0);
- } else {
- intel_de_write(dev_priv, DPLL_MD(pipe),
- crtc_state->dpll_hw_state.dpll_md);
- intel_de_posting_read(dev_priv, DPLL_MD(pipe));
- }
-}
-
-void vlv_prepare_pll(const struct intel_crtc_state *crtc_state)
+static void vlv_prepare_pll(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -1581,15 +1476,6 @@ void vlv_prepare_pll(const struct intel_crtc_state *crtc_state)
u32 bestn, bestm1, bestm2, bestp1, bestp2;
u32 coreclk, reg_val;
- /* Enable Refclk */
- intel_de_write(dev_priv, DPLL(pipe),
- crtc_state->dpll_hw_state.dpll &
- ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
-
- /* No need to actually set up the DPLL with DSI */
- if ((crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
- return;
-
vlv_dpio_get(dev_priv);
bestn = crtc_state->dpll.n;
@@ -1671,7 +1557,47 @@ void vlv_prepare_pll(const struct intel_crtc_state *crtc_state)
vlv_dpio_put(dev_priv);
}
-void chv_prepare_pll(const struct intel_crtc_state *crtc_state)
+static void _vlv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+
+ intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
+ intel_de_posting_read(dev_priv, DPLL(pipe));
+ udelay(150);
+
+ if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
+ drm_err(&dev_priv->drm, "DPLL %d failed to lock\n", pipe);
+}
+
+void vlv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+
+ assert_pipe_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+ /* PLL is protected by panel, make sure we can write it */
+ assert_panel_unlocked(dev_priv, pipe);
+
+ /* Enable Refclk */
+ intel_de_write(dev_priv, DPLL(pipe),
+ crtc_state->dpll_hw_state.dpll &
+ ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
+
+ if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) {
+ vlv_prepare_pll(crtc_state);
+ _vlv_enable_pll(crtc_state);
+ }
+
+ intel_de_write(dev_priv, DPLL_MD(pipe),
+ crtc_state->dpll_hw_state.dpll_md);
+ intel_de_posting_read(dev_priv, DPLL_MD(pipe));
+}
+
+static void chv_prepare_pll(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -1682,14 +1608,6 @@ void chv_prepare_pll(const struct intel_crtc_state *crtc_state)
u32 dpio_val;
int vco;
- /* Enable Refclk and SSC */
- intel_de_write(dev_priv, DPLL(pipe),
- crtc_state->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
-
- /* No need to actually set up the DPLL with DSI */
- if ((crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
- return;
-
bestn = crtc_state->dpll.n;
bestm2_frac = crtc_state->dpll.m2 & 0x3fffff;
bestm1 = crtc_state->dpll.m1;
@@ -1775,6 +1693,83 @@ void chv_prepare_pll(const struct intel_crtc_state *crtc_state)
vlv_dpio_put(dev_priv);
}
+static void _chv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+ enum dpio_channel port = vlv_pipe_to_channel(pipe);
+ u32 tmp;
+
+ vlv_dpio_get(dev_priv);
+
+ /* Enable back the 10bit clock to display controller */
+ tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
+ tmp |= DPIO_DCLKP_EN;
+ vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
+
+ vlv_dpio_put(dev_priv);
+
+ /*
+ * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
+ */
+ udelay(1);
+
+ /* Enable PLL */
+ intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
+
+ /* Check PLL is locked */
+ if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
+ drm_err(&dev_priv->drm, "PLL %d failed to lock\n", pipe);
+}
+
+void chv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+
+ assert_pipe_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+ /* PLL is protected by panel, make sure we can write it */
+ assert_panel_unlocked(dev_priv, pipe);
+
+ /* Enable Refclk and SSC */
+ intel_de_write(dev_priv, DPLL(pipe),
+ crtc_state->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
+
+ if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) {
+ chv_prepare_pll(crtc_state);
+ _chv_enable_pll(crtc_state);
+ }
+
+ if (pipe != PIPE_A) {
+ /*
+ * WaPixelRepeatModeFixForC0:chv
+ *
+ * DPLLCMD is AWOL. Use chicken bits to propagate
+ * the value from DPLLBMD to either pipe B or C.
+ */
+ intel_de_write(dev_priv, CBR4_VLV, CBR_DPLLBMD_PIPE(pipe));
+ intel_de_write(dev_priv, DPLL_MD(PIPE_B),
+ crtc_state->dpll_hw_state.dpll_md);
+ intel_de_write(dev_priv, CBR4_VLV, 0);
+ dev_priv->chv_dpll_md[pipe] = crtc_state->dpll_hw_state.dpll_md;
+
+ /*
+ * DPLLB VGA mode also seems to cause problems.
+ * We should always have it disabled.
+ */
+ drm_WARN_ON(&dev_priv->drm,
+ (intel_de_read(dev_priv, DPLL(PIPE_B)) &
+ DPLL_VGA_MODE_DIS) == 0);
+ } else {
+ intel_de_write(dev_priv, DPLL_MD(pipe),
+ crtc_state->dpll_hw_state.dpll_md);
+ intel_de_posting_read(dev_priv, DPLL_MD(pipe));
+ }
+}
+
/**
* vlv_force_pll_on - forcibly enable just the PLL
* @dev_priv: i915 private structure
@@ -1802,11 +1797,9 @@ int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
if (IS_CHERRYVIEW(dev_priv)) {
chv_compute_dpll(crtc_state);
- chv_prepare_pll(crtc_state);
chv_enable_pll(crtc_state);
} else {
vlv_compute_dpll(crtc_state);
- vlv_prepare_pll(crtc_state);
vlv_enable_pll(crtc_state);
}
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.h b/drivers/gpu/drm/i915/display/intel_dpll.h
index 29f31075cdf0..db396b3e1141 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.h
+++ b/drivers/gpu/drm/i915/display/intel_dpll.h
@@ -25,14 +25,13 @@ void chv_compute_dpll(struct intel_crtc_state *crtc_state);
int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
const struct dpll *dpll);
void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe);
-void i9xx_enable_pll(const struct intel_crtc_state *crtc_state);
-void vlv_enable_pll(const struct intel_crtc_state *crtc_state);
+
void chv_enable_pll(const struct intel_crtc_state *crtc_state);
-void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void vlv_enable_pll(const struct intel_crtc_state *crtc_state);
+void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void i9xx_enable_pll(const struct intel_crtc_state *crtc_state);
void i9xx_disable_pll(const struct intel_crtc_state *crtc_state);
-void vlv_prepare_pll(const struct intel_crtc_state *crtc_state);
-void chv_prepare_pll(const struct intel_crtc_state *crtc_state);
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
struct dpll *best_clock);
int chv_calc_dpll_params(int refclk, struct dpll *pll_clock);
--
2.38.1