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drm/amd/display: Support for DMUB HPD interrupt handling

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[WHY]
To add support for HPD interrupt handling from DMUB.
HPD interrupt could be triggered from outbox1 from DMUB

[HOW]
1) Use queue_work to handle hpd task from outbox1

2) Add handle_hpd_irq_helper to share interrupt handling code
between legacy and DMUB HPD from outbox1

3) Added DMUB HPD handling in dmub_srv_stat_get_notification().
HPD handling callback function and wake up the DMUB thread.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Jude Shih <shenshih@amd.com>
Tested-by: Daniel Wheeler <Daniel.Wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jude Shih
2021-07-25 13:55:02 +08:00
committed by Alex Deucher
parent b5ce6fe812
commit e27c41d5b0
2 changed files with 203 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
View File

@@ -47,6 +47,8 @@
#define AMDGPU_DM_MAX_CRTC 6
#define AMDGPU_DM_MAX_NUM_EDP 2
#define AMDGPU_DMUB_NOTIFICATION_MAX 5
/*
#include "include/amdgpu_dal_power_if.h"
#include "amdgpu_dm_irq.h"
@@ -86,6 +88,21 @@ struct dm_compressor_info {
uint64_t gpu_addr;
};
typedef void (*dmub_notify_interrupt_callback_t)(struct amdgpu_device *adev, struct dmub_notification *notify);
/**
* struct dmub_hpd_work - Handle time consuming work in low priority outbox IRQ
*
* @handle_hpd_work: Work to be executed in a separate thread to handle hpd_low_irq
* @dmub_notify: notification for callback function
* @adev: amdgpu_device pointer
*/
struct dmub_hpd_work {
struct work_struct handle_hpd_work;
struct dmub_notification *dmub_notify;
struct amdgpu_device *adev;
};
/**
* struct vblank_control_work - Work data for vblank control
* @work: Kernel work data for the work event
@@ -190,8 +207,30 @@ struct amdgpu_display_manager {
*/
struct dmub_srv *dmub_srv;
/**
* @dmub_notify:
*
* Notification from DMUB.
*/
struct dmub_notification *dmub_notify;
/**
* @dmub_callback:
*
* Callback functions to handle notification from DMUB.
*/
dmub_notify_interrupt_callback_t dmub_callback[AMDGPU_DMUB_NOTIFICATION_MAX];
/**
* @dmub_thread_offload:
*
* Flag to indicate if callback is offload.
*/
bool dmub_thread_offload[AMDGPU_DMUB_NOTIFICATION_MAX];
/**
* @dmub_fb_info:
*
@@ -439,6 +478,7 @@ struct amdgpu_display_manager {
*/
struct list_head da_list;
struct completion dmub_aux_transfer_done;
struct workqueue_struct *delayed_hpd_wq;
/**
* @brightness: