drivers/gpu/drm/stm/ltdc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) STMicroelectronics SA 2017
   4  *
   5  * Authors: Philippe Cornu <philippe.cornu@st.com>
   6  *          Yannick Fertre <yannick.fertre@st.com>
   7  *          Fabien Dessenne <fabien.dessenne@st.com>
   8  *          Mickael Reulier <mickael.reulier@st.com>
   9  */
  10
  11 #ifndef _LTDC_H_
  12 #define _LTDC_H_
  13
  14 struct ltdc_caps {
  15         u32 hw_version;         /* hardware version */
  16         u32 nb_layers;          /* number of supported layers */
  17         u32 reg_ofs;            /* register offset for applicable regs */
  18         u32 bus_width;          /* bus width (32 or 64 bits) */
  19         const u32 *pix_fmt_hw;  /* supported pixel formats */
  20 };
  21
  22 struct ltdc_device {
  23         void __iomem *regs;
  24         struct clk *pixel_clk;  /* lcd pixel clock */
  25         struct mutex err_lock;  /* protecting error_status */
  26         struct ltdc_caps caps;
  27         u32 error_status;
  28         u32 irq_status;
  29 };
  30
  31 int ltdc_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe);
  32 void ltdc_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
  33 int ltdc_load(struct drm_device *ddev);
  34 void ltdc_unload(struct drm_device *ddev);
  35
  36 #endif