From: Stanislav Lisovskiy <[email protected]> Adding sanity checks for primary and secondary bigjoiner/uncompressed bitmasks, should make it easier to spot possible issues.
Signed-off-by: Stanislav Lisovskiy <[email protected]> Reviewed-by: Suraj Kandpal <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 24 ++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index cdc7531311fc..6f098383479f 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -3638,11 +3638,17 @@ static void enabled_bigjoiner_pipes(struct drm_i915_private *dev_priv, } } +static u8 expected_secondary_pipes(u8 primary_pipes) +{ + return primary_pipes << 1; +} + static void enabled_joiner_pipes(struct drm_i915_private *dev_priv, u8 *primary_pipes, u8 *secondary_pipes) { u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes; u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes; + u8 uncompressed_joiner_pipes, bigjoiner_pipes; enabled_uncompressed_joiner_pipes(dev_priv, &primary_uncompressed_joiner_pipes, &secondary_uncompressed_joiner_pipes); @@ -3650,6 +3656,24 @@ static void enabled_joiner_pipes(struct drm_i915_private *dev_priv, enabled_bigjoiner_pipes(dev_priv, &primary_bigjoiner_pipes, &secondary_bigjoiner_pipes); + uncompressed_joiner_pipes = primary_uncompressed_joiner_pipes | + secondary_uncompressed_joiner_pipes; + bigjoiner_pipes = primary_bigjoiner_pipes | secondary_bigjoiner_pipes; + + drm_WARN(&dev_priv->drm, (uncompressed_joiner_pipes & bigjoiner_pipes) != 0, + "Uncomressed joiner pipes(%x) and bigjoiner pipes(%x) can't intersect\n", + uncompressed_joiner_pipes, bigjoiner_pipes); + drm_WARN(&dev_priv->drm, secondary_bigjoiner_pipes != + expected_secondary_pipes(primary_bigjoiner_pipes), + "Wrong secondary bigjoiner pipes(expected %x, current %x)\n", + expected_secondary_pipes(primary_bigjoiner_pipes), + secondary_bigjoiner_pipes); + drm_WARN(&dev_priv->drm, secondary_uncompressed_joiner_pipes != + expected_secondary_pipes(primary_uncompressed_joiner_pipes), + "Wrong secondary uncompressed joiner pipes(expected %x, current %x)\n", + expected_secondary_pipes(primary_uncompressed_joiner_pipes), + secondary_uncompressed_joiner_pipes); + *primary_pipes = 0; *secondary_pipes = 0; -- 2.45.2
