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drm/i915/skl: use ranges for voltage level lookup

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Like was done for ICL, let's convert the voltage level lookup to use
frequency ranges rather than individual frequencies. For deciding the
voltage, the individual value doesn't really matter.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190610214847.9865-1-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi 2019-06-10 14:48:47 -07:00
parent 63b1700b40
commit 522d47cff1
1 changed files with 7 additions and 13 deletions
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20
drivers/gpu/drm/i915/intel_cdclk.c
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@ -809,20 +809,14 @@ static int skl_calc_cdclk(int min_cdclk, int vco)
static u8 skl_calc_voltage_level(int cdclk)
{
switch (cdclk) {
default:
case 308571:
case 337500:
return 0;
case 450000:
case 432000:
return 1;
case 540000:
return 2;
case 617143:
case 675000:
if (cdclk > 540000)
return 3;
}
else if (cdclk > 450000)
return 2;
else if (cdclk > 337500)
return 1;
else
return 0;
}
static void skl_dpll0_update(struct drm_i915_private *dev_priv,