From 12c8ca9cf9bf5d53918068b1ebbd17ac6ef1d2f3 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Mon, 26 Jun 2017 12:21:45 -0700 Subject: [PATCH] drm/i915/dp: Remove -1/+1 from t11_t12 for Gen9_LP/CNP case MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Now the VBT.seq->t11_t12 value adds 100ms to both Gen9_LP as well as non Gen9_LP cases so no need to special case and do -1 during HW readout and +1 during pp_div write for Gen9_LP/CNP case. Reviewed-by: Ville Syrjala Signed-off-by: Manasi Navare Suggested-by: Ville Syrjala Cc: Ville Syrjala Cc: Clint Taylor Link: http://patchwork.freedesktop.org/patch/msgid/1498504905-21067-2-git-send-email-manasi.d.navare@intel.com Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/i915/intel_dp.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 95ff5d678472..0445d11224d4 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5203,12 +5203,8 @@ intel_pps_readout_hw_state(struct drm_i915_private *dev_priv, PANEL_POWER_DOWN_DELAY_SHIFT; if (IS_GEN9_LP(dev_priv) || HAS_PCH_CNP(dev_priv)) { - u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> - BXT_POWER_CYCLE_DELAY_SHIFT; - if (tmp > 0) - seq->t11_t12 = (tmp - 1) * 1000; - else - seq->t11_t12 = 0; + seq->t11_t12 = ((pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> + BXT_POWER_CYCLE_DELAY_SHIFT) * 1000; } else { seq->t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; @@ -5367,7 +5363,7 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, if (IS_GEN9_LP(dev_priv) || HAS_PCH_CNP(dev_priv)) { pp_div = I915_READ(regs.pp_ctrl); pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; - pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) + pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) << BXT_POWER_CYCLE_DELAY_SHIFT); } else { pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; -- 2.20.1