drivers/gpu/drm/stm/ltdc.h

   1 /*
   2  * Copyright (C) STMicroelectronics SA 2017
   3  *
   4  * Authors: Philippe Cornu <philippe.cornu@st.com>
   5  *          Yannick Fertre <yannick.fertre@st.com>
   6  *          Fabien Dessenne <fabien.dessenne@st.com>
   7  *          Mickael Reulier <mickael.reulier@st.com>
   8  *
   9  * License terms:  GNU General Public License (GPL), version 2
  10  */
  11
  12 #ifndef _LTDC_H_
  13 #define _LTDC_H_
  14
  15 struct ltdc_caps {
  16         u32 hw_version;         /* hardware version */
  17         u32 nb_layers;          /* number of supported layers */
  18         u32 reg_ofs;            /* register offset for applicable regs */
  19         u32 bus_width;          /* bus width (32 or 64 bits) */
  20         const u32 *pix_fmt_hw;  /* supported pixel formats */
  21 };
  22
  23 struct ltdc_device {
  24         struct drm_fbdev_cma *fbdev;
  25         void __iomem *regs;
  26         struct clk *pixel_clk;  /* lcd pixel clock */
  27         struct drm_panel *panel;
  28         struct mutex err_lock;  /* protecting error_status */
  29         struct ltdc_caps caps;
  30         u32 clut[256];          /* color look up table */
  31         u32 error_status;
  32         u32 irq_status;
  33 };
  34
  35 int ltdc_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe);
  36 void ltdc_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
  37 int ltdc_load(struct drm_device *ddev);
  38 void ltdc_unload(struct drm_device *ddev);
  39
  40 #endif