drivers/gpu/drm/litevideo/litevideo.h

   1 /* SPDX-License-Identifier: GPL-2.0
   2  *
   3  * Copyright (C) 2020 Antmicro <www.antmicro.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef _LITEVIDEO_LITEVIDEO_H_
  16 #define _LITEVIDEO_LITEVIDEO_H_
  17
  18 #include <drm/drm.h>
  19 #include <linux/of.h>
  20 #include <linux/clk.h>
  21 #include <linux/wait.h>
  22
  23 /* register offsets */
  24
  25 #define LITEVIDEO_CORE_HRES_OFF          0x1c
  26 #define LITEVIDEO_CORE_HSYNC_START_OFF   0x24
  27 #define LITEVIDEO_CORE_HSYNC_END_OFF     0x2c
  28 #define LITEVIDEO_CORE_HSCAN_OFF         0x34
  29 #define LITEVIDEO_CORE_VRES_OFF          0x3c
  30 #define LITEVIDEO_CORE_VSYNC_START_OFF   0x44
  31 #define LITEVIDEO_CORE_VSYNC_END_OFF     0x4c
  32 #define LITEVIDEO_CORE_VSCAN_OFF         0x54
  33
  34 #define LITEVIDEO_MMCM_WRITE_OFF         0x94
  35 #define LITEVIDEO_MMCM_READY_OFF         0x98
  36 #define LITEVIDEO_MMCM_ADDR_OFF          0x9c
  37 #define LITEVIDEO_MMCM_DATA_OFF          0xa0
  38
  39 #define LITEVIDEO_DMA_ENABLE_OFF         0x18
  40 #define LITEVIDEO_DMA_BASE_ADDR_OFF      0x5c
  41 #define LITEVIDEO_DMA_LENGTH_OFF         0x6c
  42
  43 /* register sizes */
  44
  45 #define LITEVIDEO_CORE_HRES_SIZE         2
  46 #define LITEVIDEO_CORE_HSYNC_START_SIZE  2
  47 #define LITEVIDEO_CORE_HSYNC_END_SIZE    2
  48 #define LITEVIDEO_CORE_HSCAN_SIZE        2
  49 #define LITEVIDEO_CORE_VRES_SIZE         2
  50 #define LITEVIDEO_CORE_VSYNC_START_SIZE  2
  51 #define LITEVIDEO_CORE_VSYNC_END_SIZE    2
  52 #define LITEVIDEO_CORE_VSCAN_SIZE        2
  53
  54 #define LITEVIDEO_MMCM_WRITE_SIZE        1
  55 #define LITEVIDEO_MMCM_READY_SIZE        1
  56 #define LITEVIDEO_MMCM_ADDR_SIZE         1
  57 #define LITEVIDEO_MMCM_DATA_SIZE         2
  58
  59 #define LITEVIDEO_DMA_ENABLE_SIZE        1
  60 #define LITEVIDEO_DMA_BASE_ADDR_SIZE     4
  61 #define LITEVIDEO_DMA_LENGTH_SIZE        4
  62
  63 /* constants */
  64
  65 /* clk100 has to be used for LiteX VideoOut */
  66 #define LITEVIDEO_IDEAL_DIV_VALUE 10000
  67
  68 struct litevideo_prv {
  69         struct drm_device *drm_dev;
  70         void __iomem *base;
  71         struct clk *hdmi_clk;
  72         wait_queue_head_t wq;
  73         u32 h_active;
  74         u32 h_blanking;
  75         u32 h_front_porch;
  76         u32 h_sync;
  77         u32 v_active;
  78         u32 v_blanking;
  79         u32 v_front_porch;
  80         u32 v_sync;
  81         u32 dma_offset;
  82         u32 dma_length;
  83         u32 pixel_clock;
  84 };
  85
  86 #endif /* _LITEVIDEO_LITEVIDEO_H_ */