[RFC v2 1/4] drm/i915/display: add support for DMC wakelocks

[Jani Nikula]

On Thu, 11 Jan 2024, Luca Coelho <luciano.coelho at intel.com> wrote:
> diff --git a/drivers/gpu/drm/i915/display/intel_wakelock.h b/drivers/gpu/drm/i915/display/intel_wakelock.h
> new file mode 100644
> index 000000000000..a47205e1ea32
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/display/intel_wakelock.h
> @@ -0,0 +1,34 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright (C) 2023 Intel Corporation
> + */
> +
> +#ifndef __INTEL_WAKELOCK_H__
> +#define __INTEL_WAKELOCK_H__
> +
> +#include <linux/types.h>
> +#include <linux/workqueue.h>
> +#include <linux/refcount.h>
> +
> +#include "i915_reg_defs.h"
> +
> +struct drm_i915_private;
> +
> +struct intel_display_wl {
> +	spinlock_t lock;
> +	bool enabled;
> +	refcount_t refcount;
> +	struct delayed_work work;
> +};
> +
> +struct intel_display_wl_range {
> +	u32 start;
> +	u32 end;
> +};
> +
> +void intel_display_wl_init(struct drm_i915_private *i915);
> +void intel_display_wl_enable(struct drm_i915_private *i915);
> +void intel_display_wl_get(struct drm_i915_private *i915, i915_reg_t reg);
> +void intel_display_wl_put(struct drm_i915_private *i915, i915_reg_t reg);

Nitpick, I'll want the name prefix to match the filename,
i.e. intel_foo.[ch] have functions named intel_foo_*.

BR,
Jani.

> +
> +#endif /* __INTEL_WAKELOCK_H__ */
> diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
> index 0292b79852a0..387eccab28ae 100644
> --- a/drivers/gpu/drm/xe/Makefile
> +++ b/drivers/gpu/drm/xe/Makefile
> @@ -279,6 +279,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
>  	i915-display/intel_vdsc.o \
>  	i915-display/intel_vga.o \
>  	i915-display/intel_vrr.o \
> +	i915-display/intel_wakelock.o \
>  	i915-display/intel_wm.o \
>  	i915-display/skl_scaler.o \
>  	i915-display/skl_universal_plane.o \

-- 
Jani Nikula, Intel