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drm/i915: Consolidate {bxt,cnl,icl}_init_cdclk

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The BXT and CNL functions were already basically identical, whereas
ICL's function tried to do its own sanitization rather than calling
bxt_sanitize_cdclk.

This should actually fix a bug in our ICL initialization where it would
consider the /2 CD2X divider invalid and force an unnecessary
sanitization (we now have valid clock frequencies that use this
divider).

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190910154252.30503-9-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2019-09-10 08:42:52 -07:00
parent 8f9f717d6c
commit 0c1279b58f
1 changed files with 2 additions and 63 deletions
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65
drivers/gpu/drm/i915/display/intel_cdclk.c
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@ -1710,63 +1710,6 @@ static void bxt_uninit_cdclk(struct drm_i915_private *dev_priv)
bxt_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
static void icl_init_cdclk(struct drm_i915_private *dev_priv)
{
struct intel_cdclk_state sanitized_state;
u32 val;
/* This sets dev_priv->cdclk.hw. */
intel_update_cdclk(dev_priv);
intel_dump_cdclk_state(&dev_priv->cdclk.hw, "Current CDCLK");
/* This means CDCLK disabled. */
if (dev_priv->cdclk.hw.cdclk == dev_priv->cdclk.hw.bypass)
goto sanitize;
val = I915_READ(CDCLK_CTL);
if ((val & BXT_CDCLK_CD2X_DIV_SEL_MASK) != 0)
goto sanitize;
if ((val & CDCLK_FREQ_DECIMAL_MASK) !=
skl_cdclk_decimal(dev_priv->cdclk.hw.cdclk))
goto sanitize;
return;
sanitize:
DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n");
sanitized_state.ref = dev_priv->cdclk.hw.ref;
sanitized_state.cdclk = bxt_calc_cdclk(dev_priv, 0);
sanitized_state.vco = bxt_calc_cdclk_pll_vco(dev_priv,
sanitized_state.cdclk);
sanitized_state.voltage_level =
dev_priv->display.calc_voltage_level(sanitized_state.cdclk);
bxt_set_cdclk(dev_priv, &sanitized_state, INVALID_PIPE);
}
static void cnl_init_cdclk(struct drm_i915_private *dev_priv)
{
struct intel_cdclk_state cdclk_state;
bxt_sanitize_cdclk(dev_priv);
if (dev_priv->cdclk.hw.cdclk != 0 &&
dev_priv->cdclk.hw.vco != 0)
return;
cdclk_state = dev_priv->cdclk.hw;
cdclk_state.cdclk = bxt_calc_cdclk(dev_priv, 0);
cdclk_state.vco = bxt_calc_cdclk_pll_vco(dev_priv, cdclk_state.cdclk);
cdclk_state.voltage_level =
dev_priv->display.calc_voltage_level(cdclk_state.cdclk);
bxt_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE);
}
/**
* intel_cdclk_init - Initialize CDCLK
* @i915: i915 device
@ -1778,14 +1721,10 @@ static void cnl_init_cdclk(struct drm_i915_private *dev_priv)
*/
void intel_cdclk_init(struct drm_i915_private *i915)
{
if (INTEL_GEN(i915) >= 11)
icl_init_cdclk(i915);
else if (IS_CANNONLAKE(i915))
cnl_init_cdclk(i915);
if (IS_GEN9_LP(i915) || INTEL_GEN(i915) >= 10)
bxt_init_cdclk(i915);
else if (IS_GEN9_BC(i915))
skl_init_cdclk(i915);
else if (IS_GEN9_LP(i915))
bxt_init_cdclk(i915);
}
/**