samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Garpu 0
Kode Masalah Tarik Permintaan Actions Packages Projects Rilis Wiki Kegiatan

disp: msm: sde: add msgq support for sde vm layer

Telusuri Sumber 
Linux message queues(msgq) are used to communicate between VM's
This change creates a display specific msgq and a set of
framework api's for the VM layer to invoke communication
between the VMs'.

Display msgq is bidirectional. Tx end is created by default for
both the VM's. Rx is kept optional to avoid unnecessary creation
of listener threads.

Change-Id: If4e6410045293d6b21087a76ec018d4784dd5238
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
This commit is contained in:
Jeykumar Sankaran
2020-09-24 18:49:27 -07:00
committed by Amine Najahi
orang tua 2fb129f394
melakukan d076f02017
8 mengubah file dengan 251 tambahan dan 2 penghapusan
Download Patch File Download Diff File Expand all files Collapse all files

50
msm/sde/sde_vm.h
Melihat File

@@ -12,6 +12,35 @@
struct sde_kms;
/* sde_vm_msg_type - msg_type for dispaly custom messages */
enum sde_vm_msg_type {
SDE_VM_MSG_MAX,
};
/**
* sde_vm_msg_work - sde msgq work definition
* @work - base kthread work object
* @msg_buf - payload buffer
* @msg_size - payload buffer size
* @sde_vm - handle to vm structure
*/
struct sde_vm_msg_work {
struct kthread_work work;
void *msg_buf;
size_t msg_size;
struct sde_vm *sde_vm;
};
/**
* sde_vm_msg_header - header definition for custom messages. Must
* be placed at the beginning of each custom
* message definition.
* @msg_type - type of the message
*/
struct sde_vm_msg_header {
enum sde_vm_msg_type msg_type;
};
/**
* sde_vm_irq_entry - VM irq specification
* @label - VM_IRQ_LABEL assigned by Hyp RM
@@ -122,6 +151,21 @@ struct sde_vm_ops {
* @sde_kms - handle to sde_kms
*/
int (*vm_acquire_fail_handler)(struct sde_kms *sde_kms);
/** vm_msg_recv_cb - sde kms callback hook for msgq data
* @sde_vm - handle to sde_vm struct
* @data - paylod data
* @size - size of payload data
*/
void (*vm_msg_recv_cb)(struct sde_vm *sde_vm, void *data, size_t size);
/** vm_msg_send - hook to send custom data to VM
* @sde_vm - handle to sde_vm struct
* @msg - payload data
* @msg_size - payload data size
* @return - 0 on success, errorcode otherwise
*/
int (*vm_msg_send)(struct sde_vm *sde_vm, void *msg, size_t msg_size);
};
/**
@@ -132,6 +176,9 @@ struct sde_vm_ops {
* @io_mem_handle - RM identifier for the IO range
* @sde_kms - handle to sde_kms
* @vm_ops - VM operation hooks for respective VM type
* @msgq_listener_thread - handle to msgq receiver thread
* @vm_work - kthread work obj for msgq
* @msgq_handle - handle to display msgq
*/
struct sde_vm {
struct mutex vm_res_lock;
@@ -140,6 +187,9 @@ struct sde_vm {
int io_mem_handle;
struct sde_kms *sde_kms;
struct sde_vm_ops vm_ops;
struct task_struct *msgq_listener_thread;
struct sde_vm_msg_work vm_work;
void *msgq_handle;
};
/**