1 /* SPDX-License-Identifier: MIT */ 2 /* Copyright © 2025 Intel Corporation x*/ 3 4 #ifndef __DISPLAY_PARENT_INTERFACE_H__ 5 #define __DISPLAY_PARENT_INTERFACE_H__ 6 7 #include <linux/types.h> 8 9 struct dma_fence; 10 struct drm_device; 11 struct intel_hdcp_gsc_context; 12 struct ref_tracker; 13 14 struct intel_display_rpm_interface { 15 struct ref_tracker *(*get)(const struct drm_device *drm); 16 struct ref_tracker *(*get_raw)(const struct drm_device *drm); 17 struct ref_tracker *(*get_if_in_use)(const struct drm_device *drm); 18 struct ref_tracker *(*get_noresume)(const struct drm_device *drm); 19 20 void (*put)(const struct drm_device *drm, struct ref_tracker *wakeref); 21 void (*put_raw)(const struct drm_device *drm, struct ref_tracker *wakeref); 22 void (*put_unchecked)(const struct drm_device *drm); 23 24 bool (*suspended)(const struct drm_device *drm); 25 void (*assert_held)(const struct drm_device *drm); 26 void (*assert_block)(const struct drm_device *drm); 27 void (*assert_unblock)(const struct drm_device *drm); 28 }; 29 30 struct intel_display_hdcp_interface { 31 ssize_t (*gsc_msg_send)(struct intel_hdcp_gsc_context *gsc_context, 32 void *msg_in, size_t msg_in_len, 33 void *msg_out, size_t msg_out_len); 34 bool (*gsc_check_status)(struct drm_device *drm); 35 struct intel_hdcp_gsc_context *(*gsc_context_alloc)(struct drm_device *drm); 36 void (*gsc_context_free)(struct intel_hdcp_gsc_context *gsc_context); 37 }; 38 39 struct intel_display_irq_interface { 40 bool (*enabled)(struct drm_device *drm); 41 void (*synchronize)(struct drm_device *drm); 42 }; 43 44 struct intel_display_rps_interface { 45 void (*boost_if_not_started)(struct dma_fence *fence); 46 void (*mark_interactive)(struct drm_device *drm, bool interactive); 47 void (*ilk_irq_handler)(struct drm_device *drm); 48 }; 49 50 /** 51 * struct intel_display_parent_interface - services parent driver provides to display 52 * 53 * The parent, or core, driver provides a pointer to this structure to display 54 * driver when calling intel_display_device_probe(). The display driver uses it 55 * to access services provided by the parent driver. The structure may contain 56 * sub-struct pointers to group function pointers by functionality. 57 * 58 * All function and sub-struct pointers must be initialized and callable unless 59 * explicitly marked as "optional" below. The display driver will only NULL 60 * check the optional pointers. 61 */ 62 struct intel_display_parent_interface { 63 /** @hdcp: HDCP GSC interface */ 64 const struct intel_display_hdcp_interface *hdcp; 65 66 /** @rpm: Runtime PM functions */ 67 const struct intel_display_rpm_interface *rpm; 68 69 /** @irq: IRQ interface */ 70 const struct intel_display_irq_interface *irq; 71 72 /** @rpm: RPS interface. Optional. */ 73 const struct intel_display_rps_interface *rps; 74 75 /** @vgpu_active: Is vGPU active? Optional. */ 76 bool (*vgpu_active)(struct drm_device *drm); 77 78 /** @has_fenced_regions: Support legacy fencing? Optional. */ 79 bool (*has_fenced_regions)(struct drm_device *drm); 80 81 /** @fence_priority_display: Set display priority. Optional. */ 82 void (*fence_priority_display)(struct dma_fence *fence); 83 }; 84 85 #endif 86