This makes sense, it should have returned the edp ddi buf translation table as per the Bspec. Please add this to the commit message: Fixes: cf54ca8bc567 ("drm/i915/cnl: Implement voltage swing sequence.")
After that, Reviewed-by: Manasi Navare manasi.d.navare@intel.com
Manasi
On Mon, Jul 17, 2017 at 11:21:27AM -0700, Matthias Kaehlcke wrote:
For 0.85V cnl_get_buf_trans_edp() returns the DP table, instead of EDP. Use the correct table.
The error was pointed out by this clang warning:
drivers/gpu/drm/i915/intel_ddi.c:392:39: warning: variable 'cnl_ddi_translations_edp_0_85V' is not needed and will not be emitted [-Wunneeded-internal-declaration] static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V[] = {
Signed-off-by: Matthias Kaehlcke mka@chromium.org
drivers/gpu/drm/i915/intel_ddi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index efb13582dc73..6fa02e6a7a9b 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1873,7 +1873,7 @@ cnl_get_buf_trans_edp(struct drm_i915_private *dev_priv, if (dev_priv->vbt.edp.low_vswing) { if (voltage == VOLTAGE_INFO_0_85V) { *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_85V);
return cnl_ddi_translations_dp_0_85V;
} else if (voltage == VOLTAGE_INFO_0_95V) { *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_95V); return cnl_ddi_translations_edp_0_95V;return cnl_ddi_translations_edp_0_85V;
-- 2.13.2.932.g7449e964c-goog
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