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drm/i915/psr: Add helpers for block count number handling

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Add helpers to make it more clear how PSR2_CTL[Block Count Number]
is configured.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329150703.432072-5-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander
2023-03-29 18:07:01 +03:00
parent cdb015a611
commit f389e7ac8d
1 changed files with 14 additions and 4 deletions
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18
drivers/gpu/drm/i915/display/intel_psr.c
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@@ -519,6 +519,17 @@ static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
return val;
}
static int psr2_block_count_lines(struct intel_dp *intel_dp)
{
return intel_dp->psr.io_wake_lines < 9 &&
intel_dp->psr.fast_wake_lines < 9 ? 8 : 12;
}
static int psr2_block_count(struct intel_dp *intel_dp)
{
return psr2_block_count_lines(intel_dp) / 4;
}
static void hsw_activate_psr2(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
@@ -536,11 +547,10 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
val |= intel_psr2_get_tp_time(intel_dp);
if (DISPLAY_VER(dev_priv) >= 12) {
if (intel_dp->psr.io_wake_lines < 9 &&
intel_dp->psr.fast_wake_lines < 9)
val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_2;
else
if (psr2_block_count(intel_dp) > 2)
val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_3;
else
val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_2;
}
/* Wa_22012278275:adl-p */