From 3e68928b7d4c833726717ced2261f77479d98a47 Mon Sep 17 00:00:00 2001 From: Animesh Manna Date: Mon, 29 Oct 2018 15:14:10 -0700 Subject: [PATCH] drm/i915/icl: Enable DC9 as lowest possible state during screen-off ICL supports DC5, DC6, and DC9. Enable DC9 during screen-off, and enable DC5/6 when appropriate. v2: (James Ausmus) - Also handle ICL as GEN9_LP in i915_drm_suspend_late and i915_drm_suspend_early - Add DC9 to gen9_dc_mask for ICL - Re-order GEN checks for newest platform first - Use INTEL_GEN instead of INTEL_INFO->gen - Use INTEL_GEN >= 11 instead of IS_ICELAKE - Consolidate GEN checks v3: (James Ausmus) - Also allow DC6 for ICL (Imre, Art) - Simplify !(GEN >= 11) to GEN < 11 (Imre) v4: (James Ausmus) - Don't call intel_power_sequencer_reset after DC9 for Gen11+, as the PPS regs are Always On - Rebase against upstream changes v5: (Anusha Srivatsa) - rebased against the latest upstream changes. v6: (Anusha Srivatsa) - rebased.Use INTEL_GEN consistently. - Simplify the code (Rodrigo) v7: rebased. Change order according to platforms(Jyoti) v8: rebased. Change the check from platform specific to HAS_PCH_SPLIT(). Add comment in code to be more clear.(Rodrigo) Cc: Imre Deak Cc: Rodrigo Vivi Signed-off-by: Animesh Manna Signed-off-by: James Ausmus Signed-off-by: Anusha Srivatsa Tested-by: Jyoti Yadav Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20181029221410.4423-1-anusha.srivatsa@intel.com --- drivers/gpu/drm/i915/i915_drv.c | 20 +++++++++++++--- drivers/gpu/drm/i915/intel_drv.h | 3 +++ drivers/gpu/drm/i915/intel_runtime_pm.c | 32 ++++++++++++++++--------- 3 files changed, 41 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index f6416b1d3452..198d625f2871 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2152,7 +2152,7 @@ static int i915_drm_resume_early(struct drm_device *dev) intel_uncore_resume_early(dev_priv); - if (IS_GEN9_LP(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 11 || IS_GEN9_LP(dev_priv)) { gen9_sanitize_dc_state(dev_priv); bxt_disable_dc9(dev_priv); } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { @@ -2919,7 +2919,10 @@ static int intel_runtime_suspend(struct device *kdev) intel_uncore_suspend(dev_priv); ret = 0; - if (IS_GEN9_LP(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 11) { + icl_display_core_uninit(dev_priv); + bxt_enable_dc9(dev_priv); + } else if (IS_GEN9_LP(dev_priv)) { bxt_display_core_uninit(dev_priv); bxt_enable_dc9(dev_priv); } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { @@ -3004,7 +3007,18 @@ static int intel_runtime_resume(struct device *kdev) if (intel_uncore_unclaimed_mmio(dev_priv)) DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n"); - if (IS_GEN9_LP(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 11) { + bxt_disable_dc9(dev_priv); + icl_display_core_init(dev_priv, true); + if (dev_priv->csr.dmc_payload) { + if (dev_priv->csr.allowed_dc_mask & + DC_STATE_EN_UPTO_DC6) + skl_enable_dc6(dev_priv); + else if (dev_priv->csr.allowed_dc_mask & + DC_STATE_EN_UPTO_DC5) + gen9_enable_dc5(dev_priv); + } + } else if (IS_GEN9_LP(dev_priv)) { bxt_disable_dc9(dev_priv); bxt_display_core_init(dev_priv, true); if (dev_priv->csr.dmc_payload && diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 268afb6d2746..e4eaa40bd5f1 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1695,6 +1695,7 @@ void bxt_enable_dc9(struct drm_i915_private *dev_priv); void bxt_disable_dc9(struct drm_i915_private *dev_priv); void gen9_enable_dc5(struct drm_i915_private *dev_priv); unsigned int skl_cdclk_get_vco(unsigned int freq); +void skl_enable_dc6(struct drm_i915_private *dev_priv); void intel_dp_get_m_n(struct intel_crtc *crtc, struct intel_crtc_state *pipe_config); void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state, @@ -2045,6 +2046,8 @@ int intel_power_domains_init(struct drm_i915_private *); void intel_power_domains_cleanup(struct drm_i915_private *dev_priv); void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume); void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv); +void icl_display_core_init(struct drm_i915_private *dev_priv, bool resume); +void icl_display_core_uninit(struct drm_i915_private *dev_priv); void intel_power_domains_enable(struct drm_i915_private *dev_priv); void intel_power_domains_disable(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 5f5416eb9644..b1901a6c17be 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -560,7 +560,9 @@ static u32 gen9_dc_mask(struct drm_i915_private *dev_priv) u32 mask; mask = DC_STATE_EN_UPTO_DC5; - if (IS_GEN9_LP(dev_priv)) + if (INTEL_GEN(dev_priv) >= 11) + mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9; + else if (IS_GEN9_LP(dev_priv)) mask |= DC_STATE_EN_DC9; else mask |= DC_STATE_EN_UPTO_DC6; @@ -633,8 +635,13 @@ void bxt_enable_dc9(struct drm_i915_private *dev_priv) assert_can_enable_dc9(dev_priv); DRM_DEBUG_KMS("Enabling DC9\n"); - - intel_power_sequencer_reset(dev_priv); + /* + * Power sequencer reset is not needed on + * platforms with South Display Engine on PCH, + * because PPS registers are always on. + */ + if (!HAS_PCH_SPLIT(dev_priv)) + intel_power_sequencer_reset(dev_priv); gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9); } @@ -716,7 +723,7 @@ static void assert_can_enable_dc6(struct drm_i915_private *dev_priv) assert_csr_loaded(dev_priv); } -static void skl_enable_dc6(struct drm_i915_private *dev_priv) +void skl_enable_dc6(struct drm_i915_private *dev_priv) { assert_can_enable_dc6(dev_priv); @@ -2978,17 +2985,20 @@ static uint32_t get_allowed_dc_mask(const struct drm_i915_private *dev_priv, int requested_dc; int max_dc; - if (IS_GEN9_BC(dev_priv) || INTEL_INFO(dev_priv)->gen >= 10) { + if (INTEL_GEN(dev_priv) >= 11) { max_dc = 2; - mask = 0; - } else if (IS_GEN9_LP(dev_priv)) { - max_dc = 1; /* * DC9 has a separate HW flow from the rest of the DC states, * not depending on the DMC firmware. It's needed by system * suspend/resume, so allow it unconditionally. */ mask = DC_STATE_EN_DC9; + } else if (IS_GEN10(dev_priv) || IS_GEN9_BC(dev_priv)) { + max_dc = 2; + mask = 0; + } else if (IS_GEN9_LP(dev_priv)) { + max_dc = 1; + mask = DC_STATE_EN_DC9; } else { max_dc = 0; mask = 0; @@ -3539,8 +3549,8 @@ static void cnl_display_core_uninit(struct drm_i915_private *dev_priv) I915_WRITE(CHICKEN_MISC_2, val); } -static void icl_display_core_init(struct drm_i915_private *dev_priv, - bool resume) +void icl_display_core_init(struct drm_i915_private *dev_priv, + bool resume) { struct i915_power_domains *power_domains = &dev_priv->power_domains; struct i915_power_well *well; @@ -3592,7 +3602,7 @@ static void icl_display_core_init(struct drm_i915_private *dev_priv, intel_csr_load_program(dev_priv); } -static void icl_display_core_uninit(struct drm_i915_private *dev_priv) +void icl_display_core_uninit(struct drm_i915_private *dev_priv) { struct i915_power_domains *power_domains = &dev_priv->power_domains; struct i915_power_well *well; -- 2.30.2