diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dmc_wl.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dmc_wl.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dmc_wl.h b/drivers/gpu/drm/i915/display/intel_dmc_wl.h new file mode 100644 index 000000000000..5488fbdf29b8 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_dmc_wl.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright (C) 2024 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 intel_display; + +struct intel_dmc_wl { + spinlock_t lock; /* protects enabled, taken, dc_state and refcount */ + bool enabled; + bool taken; + refcount_t refcount; + /* + * We are keeping a copy of the enabled DC state because + * intel_display.power.domains is protected by a mutex and we do + * not want call mutex_lock() in atomic context, where some of + * the tracked MMIO operations happen. + */ + u32 dc_state; + struct delayed_work work; +}; + +void intel_dmc_wl_init(struct intel_display *display); +void intel_dmc_wl_enable(struct intel_display *display, u32 dc_state); +void intel_dmc_wl_disable(struct intel_display *display); +void intel_dmc_wl_flush_release_work(struct intel_display *display); +void intel_dmc_wl_get(struct intel_display *display, i915_reg_t reg); +void intel_dmc_wl_put(struct intel_display *display, i915_reg_t reg); +void intel_dmc_wl_get_noreg(struct intel_display *display); +void intel_dmc_wl_put_noreg(struct intel_display *display); + +#endif /* __INTEL_WAKELOCK_H__ */ |