From f8bb28e63a1e9f46fe15f63e924fab643ff8abe0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Roberto=20de=20Souza?= Date: Tue, 14 Apr 2020 12:49:51 -0700 Subject: [PATCH] drm/i915/display: Split hsw_power_well_enable() into two MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This is a preparation for ICL TC cold exit sequences. v2: - renamed new functions to hsw_power_well_enable_prepare()/complete() Signed-off-by: José Roberto de Souza Reviewed-by: Imre Deak Tested-by: You-Sheng Yang Link: https://patchwork.freedesktop.org/patch/msgid/20200414194956.164323-3-jose.souza@intel.com --- .../drm/i915/display/intel_display_power.c | 39 +++++++++++++++---- 1 file changed, 32 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c index 0cf5ed0254cf..606a1659021b 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -380,16 +380,16 @@ static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv, SKL_FUSE_PG_DIST_STATUS(pg), 1)); } -static void hsw_power_well_enable(struct drm_i915_private *dev_priv, - struct i915_power_well *power_well) +static void hsw_power_well_enable_prepare(struct drm_i915_private *dev_priv, + struct i915_power_well *power_well) { const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; int pw_idx = power_well->desc->hsw.idx; - bool wait_fuses = power_well->desc->hsw.has_fuses; - enum skl_power_gate uninitialized_var(pg); u32 val; - if (wait_fuses) { + if (power_well->desc->hsw.has_fuses) { + enum skl_power_gate pg; + pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) : SKL_PW_CTL_IDX_TO_PG(pw_idx); /* @@ -406,25 +406,46 @@ static void hsw_power_well_enable(struct drm_i915_private *dev_priv, val = intel_de_read(dev_priv, regs->driver); intel_de_write(dev_priv, regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx)); +} + +static void hsw_power_well_enable_complete(struct drm_i915_private *dev_priv, + struct i915_power_well *power_well) +{ + int pw_idx = power_well->desc->hsw.idx; + hsw_wait_for_power_well_enable(dev_priv, power_well); /* Display WA #1178: cnl */ if (IS_CANNONLAKE(dev_priv) && pw_idx >= GLK_PW_CTL_IDX_AUX_B && pw_idx <= CNL_PW_CTL_IDX_AUX_F) { + u32 val; + val = intel_de_read(dev_priv, CNL_AUX_ANAOVRD1(pw_idx)); val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS; intel_de_write(dev_priv, CNL_AUX_ANAOVRD1(pw_idx), val); } - if (wait_fuses) + if (power_well->desc->hsw.has_fuses) { + enum skl_power_gate pg; + + pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) : + SKL_PW_CTL_IDX_TO_PG(pw_idx); gen9_wait_for_power_well_fuses(dev_priv, pg); + } hsw_power_well_post_enable(dev_priv, power_well->desc->hsw.irq_pipe_mask, power_well->desc->hsw.has_vga); } +static void hsw_power_well_enable(struct drm_i915_private *dev_priv, + struct i915_power_well *power_well) +{ + hsw_power_well_enable_prepare(dev_priv, power_well); + hsw_power_well_enable_complete(dev_priv, power_well); +} + static void hsw_power_well_disable(struct drm_i915_private *dev_priv, struct i915_power_well *power_well) { @@ -570,7 +591,11 @@ icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv, val |= DP_AUX_CH_CTL_TBT_IO; intel_de_write(dev_priv, DP_AUX_CH_CTL(aux_ch), val); - hsw_power_well_enable(dev_priv, power_well); + hsw_power_well_enable_prepare(dev_priv, power_well); + + /* TODO ICL TC cold handling */ + + hsw_power_well_enable_complete(dev_priv, power_well); if (INTEL_GEN(dev_priv) >= 12 && !power_well->desc->hsw.is_tc_tbt) { enum tc_port tc_port; -- 2.39.5