diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 56 |
5 files changed, 61 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 66e6a1fd27bd..ff7c851445ff 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -424,7 +424,7 @@ static int i915_load_modeset_init(struct drm_device *dev) if (ret) goto cleanup_vga_switcheroo; - intel_power_domains_init_hw(dev_priv); + intel_power_domains_init_hw(dev_priv, false); intel_csr_ucode_init(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 858d58cfbbd1..8ea1896e3e83 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -704,10 +704,13 @@ static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation) struct drm_i915_private *dev_priv = drm_dev->dev_private; int ret; + intel_power_domains_suspend(dev_priv); + ret = intel_suspend_complete(dev_priv); if (ret) { DRM_ERROR("Suspend complete failed: %d\n", ret); + intel_power_domains_init_hw(dev_priv, true); return ret; } @@ -861,7 +864,7 @@ static int i915_drm_resume_early(struct drm_device *dev) hsw_disable_pc8(dev_priv); intel_uncore_sanitize(dev); - intel_power_domains_init_hw(dev_priv); + intel_power_domains_init_hw(dev_priv, true); return ret; } @@ -1070,8 +1073,6 @@ static int i915_pm_resume(struct device *dev) static int skl_suspend_complete(struct drm_i915_private *dev_priv) { - skl_uninit_cdclk(dev_priv); - if (dev_priv->csr.dmc_payload) skl_enable_dc6(dev_priv); @@ -1122,9 +1123,6 @@ static int skl_resume_prepare(struct drm_i915_private *dev_priv) if (dev_priv->csr.dmc_payload) skl_disable_dc6(dev_priv); - skl_init_cdclk(dev_priv); - intel_csr_load_program(dev_priv); - return 0; } diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index c42d2f3da32e..0dc0fc37e6f6 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5712,23 +5712,12 @@ void skl_uninit_cdclk(struct drm_i915_private *dev_priv) if (wait_for(!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK), 1)) DRM_ERROR("Couldn't disable DPLL0\n"); } - - /* disable PG1 and Misc I/O */ - skl_pw1_misc_io_fini(dev_priv); } void skl_init_cdclk(struct drm_i915_private *dev_priv) { - u32 val; unsigned int required_vco; - /* enable PCH reset handshake */ - val = I915_READ(HSW_NDE_RSTWRN_OPT); - I915_WRITE(HSW_NDE_RSTWRN_OPT, val | RESET_PCH_HANDSHAKE_ENABLE); - - /* enable PG1 and Misc I/O */ - skl_pw1_misc_io_init(dev_priv); - /* DPLL0 not enabled (happens on early BIOS versions) */ if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) { /* enable DPLL0 */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index ddb38b185366..8376a35daf29 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1412,7 +1412,8 @@ void intel_psr_single_frame_update(struct drm_device *dev, /* intel_runtime_pm.c */ int intel_power_domains_init(struct drm_i915_private *); void intel_power_domains_fini(struct drm_i915_private *); -void intel_power_domains_init_hw(struct drm_i915_private *dev_priv); +void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume); +void intel_power_domains_suspend(struct drm_i915_private *dev_priv); void skl_pw1_misc_io_init(struct drm_i915_private *dev_priv); void skl_pw1_misc_io_fini(struct drm_i915_private *dev_priv); void intel_runtime_pm_enable(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 3045e8b6ee00..42254b76be0a 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1903,6 +1903,43 @@ static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv) mutex_unlock(&power_domains->lock); } +static void skl_display_core_init(struct drm_i915_private *dev_priv, + bool resume) +{ + struct i915_power_domains *power_domains = &dev_priv->power_domains; + uint32_t val; + + /* enable PCH reset handshake */ + val = I915_READ(HSW_NDE_RSTWRN_OPT); + I915_WRITE(HSW_NDE_RSTWRN_OPT, val | RESET_PCH_HANDSHAKE_ENABLE); + + /* enable PG1 and Misc I/O */ + mutex_lock(&power_domains->lock); + skl_pw1_misc_io_init(dev_priv); + mutex_unlock(&power_domains->lock); + + if (!resume) + return; + + skl_init_cdclk(dev_priv); + + if (dev_priv->csr.dmc_payload) + intel_csr_load_program(dev_priv); +} + +static void skl_display_core_uninit(struct drm_i915_private *dev_priv) +{ + struct i915_power_domains *power_domains = &dev_priv->power_domains; + + skl_uninit_cdclk(dev_priv); + + /* The spec doesn't call for removing the reset handshake flag */ + /* disable PG1 and Misc I/O */ + mutex_lock(&power_domains->lock); + skl_pw1_misc_io_fini(dev_priv); + mutex_unlock(&power_domains->lock); +} + static void chv_phy_control_init(struct drm_i915_private *dev_priv) { struct i915_power_well *cmn_bc = @@ -2025,14 +2062,16 @@ static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv) * This function initializes the hardware power domain state and enables all * power domains using intel_display_set_init_power(). */ -void intel_power_domains_init_hw(struct drm_i915_private *dev_priv) +void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume) { struct drm_device *dev = dev_priv->dev; struct i915_power_domains *power_domains = &dev_priv->power_domains; power_domains->initializing = true; - if (IS_CHERRYVIEW(dev)) { + if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { + skl_display_core_init(dev_priv, resume); + } else if (IS_CHERRYVIEW(dev)) { mutex_lock(&power_domains->lock); chv_phy_control_init(dev_priv); mutex_unlock(&power_domains->lock); @@ -2049,6 +2088,19 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv) } /** + * intel_power_domains_suspend - suspend power domain state + * @dev_priv: i915 device instance + * + * This function prepares the hardware power domain state before entering + * system suspend. It must be paired with intel_power_domains_init_hw(). + */ +void intel_power_domains_suspend(struct drm_i915_private *dev_priv) +{ + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) + skl_display_core_uninit(dev_priv); +} + +/** * intel_aux_display_runtime_get - grab an auxiliary power domain reference * @dev_priv: i915 device instance * |