drivers/media/platform/vsp1/vsp1_dl.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * vsp1_dl.h  --  R-Car VSP1 Display List
   4  *
   5  * Copyright (C) 2015 Renesas Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9 #ifndef __VSP1_DL_H__
  10 #define __VSP1_DL_H__
  11
  12 #include <linux/types.h>
  13
  14 struct vsp1_device;
  15 struct vsp1_dl_body;
  16 struct vsp1_dl_body_pool;
  17 struct vsp1_dl_list;
  18 struct vsp1_dl_manager;
  19
  20 #define VSP1_DL_FRAME_END_COMPLETED             BIT(0)
  21 #define VSP1_DL_FRAME_END_INTERNAL              BIT(1)
  22
  23 /**
  24  * struct vsp1_dl_ext_cmd - Extended Display command
  25  * @pool: pool to which this command belongs
  26  * @free: entry in the pool of free commands list
  27  * @opcode: command type opcode
  28  * @flags: flags used by the command
  29  * @cmds: array of command bodies for this extended cmd
  30  * @num_cmds: quantity of commands in @cmds array
  31  * @cmd_dma: DMA address of the command body
  32  * @data: memory allocation for command-specific data
  33  * @data_dma: DMA address for command-specific data
  34  */
  35 struct vsp1_dl_ext_cmd {
  36         struct vsp1_dl_cmd_pool *pool;
  37         struct list_head free;
  38
  39         u8 opcode;
  40         u32 flags;
  41
  42         struct vsp1_pre_ext_dl_body *cmds;
  43         unsigned int num_cmds;
  44         dma_addr_t cmd_dma;
  45
  46         void *data;
  47         dma_addr_t data_dma;
  48 };
  49
  50 void vsp1_dlm_setup(struct vsp1_device *vsp1);
  51
  52 struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
  53                                         unsigned int index,
  54                                         unsigned int prealloc);
  55 void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
  56 void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
  57 unsigned int vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
  58 struct vsp1_dl_body *vsp1_dlm_dl_body_get(struct vsp1_dl_manager *dlm);
  59
  60 struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
  61 void vsp1_dl_list_put(struct vsp1_dl_list *dl);
  62 struct vsp1_dl_body *vsp1_dl_list_get_body0(struct vsp1_dl_list *dl);
  63 struct vsp1_dl_ext_cmd *vsp1_dl_get_pre_cmd(struct vsp1_dl_list *dl);
  64 void vsp1_dl_list_commit(struct vsp1_dl_list *dl, bool internal);
  65
  66 struct vsp1_dl_body_pool *
  67 vsp1_dl_body_pool_create(struct vsp1_device *vsp1, unsigned int num_bodies,
  68                          unsigned int num_entries, size_t extra_size);
  69 void vsp1_dl_body_pool_destroy(struct vsp1_dl_body_pool *pool);
  70 struct vsp1_dl_body *vsp1_dl_body_get(struct vsp1_dl_body_pool *pool);
  71 void vsp1_dl_body_put(struct vsp1_dl_body *dlb);
  72
  73 void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data);
  74 int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body *dlb);
  75 int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl);
  76
  77 #endif /* __VSP1_DL_H__ */