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 41