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drm/i915: Syntatic sugar for using intel_runtime_pm

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Frequently, we use intel_runtime_pm_get/_put around a small block.
Formalise that usage by providing a macro to define such a block with an
automatic closure to scope the intel_runtime_pm wakeref to that block,
i.e. macro abuse smelling of python.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-15-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-01-14 14:21:23 +00:00
parent c9d08cc3e3
commit d4225a535b
17 changed files with 207 additions and 239 deletions
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18
drivers/gpu/drm/i915/intel_panel.c
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@@ -1204,17 +1204,19 @@ static int intel_backlight_device_get_brightness(struct backlight_device *bd)
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
intel_wakeref_t wakeref;
u32 hw_level;
int ret;
int ret = 0;
wakeref = intel_runtime_pm_get(dev_priv);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
with_intel_runtime_pm(dev_priv, wakeref) {
u32 hw_level;
hw_level = intel_panel_get_backlight(connector);
ret = scale_hw_to_user(connector, hw_level, bd->props.max_brightness);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
intel_runtime_pm_put(dev_priv, wakeref);
hw_level = intel_panel_get_backlight(connector);
ret = scale_hw_to_user(connector,
hw_level, bd->props.max_brightness);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
}
return ret;
}