From 432f856d8b4963f2f1d95844794266d7c9a9ca97 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Wed, 16 Mar 2016 13:39:06 +0200 Subject: [PATCH] drm/i915: Split out load time interface registration According to the new init phases scheme we should register the device making it available via some kernel internal or user space interface as the last step in the init sequence, so move the corresponding code to a separate function. Also add a TODO comment about code that still needs to be moved around to one of the init phases functions depending on what the role and effect of that code is. No functional change, except for the reordering of the unload time unregistration steps of sysfs wrt. acpi and opregion. Suggested by Chris. v3: - rename i915_driver_init_register to i915_driver_init_frameworks (Chris) - rename i915_driver_init_frameworks to i915_driver_register (Daniel) CC: Chris Wilson CC: Daniel Vetter Signed-off-by: Imre Deak Reviewed-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/1458128348-15730-18-git-send-email-imre.deak@intel.com --- drivers/gpu/drm/i915/i915_dma.c | 83 +++++++++++++++++++++------------ 1 file changed, 54 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index ec8ad5e61836..b8c5fd0a99aa 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1207,6 +1207,53 @@ static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv) i915_global_gtt_cleanup(dev); } +/** + * i915_driver_register - register the driver with the rest of the system + * @dev_priv: device private + * + * Perform any steps necessary to make the driver available via kernel + * internal or userspace interfaces. + */ +static void i915_driver_register(struct drm_i915_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + + i915_gem_shrinker_init(dev_priv); + /* + * Notify a valid surface after modesetting, + * when running inside a VM. + */ + if (intel_vgpu_active(dev)) + I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY); + + i915_setup_sysfs(dev); + + if (INTEL_INFO(dev_priv)->num_pipes) { + /* Must be done after probing outputs */ + intel_opregion_init(dev); + acpi_video_register(); + } + + if (IS_GEN5(dev_priv)) + intel_gpu_ips_init(dev_priv); + + i915_audio_component_init(dev_priv); +} + +/** + * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() + * @dev_priv: device private + */ +static void i915_driver_unregister(struct drm_i915_private *dev_priv) +{ + i915_audio_component_cleanup(dev_priv); + intel_gpu_ips_teardown(); + acpi_video_unregister(); + intel_opregion_fini(dev_priv->dev); + i915_teardown_sysfs(dev_priv->dev); + i915_gem_shrinker_cleanup(dev_priv); +} + /** * i915_driver_load - setup chip and create an initial config * @dev: DRM device @@ -1245,6 +1292,11 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (ret < 0) goto out_cleanup_mmio; + /* + * TODO: move the vblank init and parts of modeset init steps into one + * of the i915_driver_init_/i915_driver_register functions according + * to the role/effect of the given init step. + */ if (INTEL_INFO(dev)->num_pipes) { ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes); if (ret) @@ -1257,26 +1309,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) goto out_power_well; } - i915_gem_shrinker_init(dev_priv); - /* - * Notify a valid surface after modesetting, - * when running inside a VM. - */ - if (intel_vgpu_active(dev)) - I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY); - - i915_setup_sysfs(dev); - - if (INTEL_INFO(dev)->num_pipes) { - /* Must be done after probing outputs */ - intel_opregion_init(dev); - acpi_video_register(); - } - - if (IS_GEN5(dev)) - intel_gpu_ips_init(dev_priv); - - i915_audio_component_init(dev_priv); + i915_driver_register(dev_priv); intel_runtime_pm_enable(dev_priv); @@ -1315,15 +1348,7 @@ int i915_driver_unload(struct drm_device *dev) intel_display_power_get(dev_priv, POWER_DOMAIN_INIT); - i915_audio_component_cleanup(dev_priv); - - intel_gpu_ips_teardown(); - - i915_teardown_sysfs(dev); - - acpi_video_unregister(); - intel_opregion_fini(dev); - i915_gem_shrinker_cleanup(dev_priv); + i915_driver_unregister(dev_priv); drm_vblank_cleanup(dev); -- 2.20.1