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drm/i915/cnl: 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/20190610214834.9789-1-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi
2019-06-10 14:48:34 -07:00
parent 4f338ac0b2
commit 63b1700b40
1 changed files with 5 additions and 8 deletions
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13
drivers/gpu/drm/i915/intel_cdclk.c
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@@ -1531,15 +1531,12 @@ static int cnl_calc_cdclk(int min_cdclk)
static u8 cnl_calc_voltage_level(int cdclk)
{
switch (cdclk) {
default:
case 168000:
return 0;
case 336000:
return 1;
case 528000:
if (cdclk > 336000)
return 2;
}
else if (cdclk > 168000)
return 1;
else
return 0;
}
static void cnl_cdclk_pll_update(struct drm_i915_private *dev_priv,