1 /* 2 * LCD device support for the JZ4740 and related SoCs. 3 * 4 * Copyright (C) 2018 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <l4/devices/lcd.h> 25 #include "lcd-device.h" 26 27 #include <l4/re/c/video/view.h> 28 #include <l4/sys/types.h> 29 30 /* C++ language interface. */ 31 32 #ifdef __cplusplus 33 34 /* Support for specific JZ4740-based devices. */ 35 36 class Lcd_jz4740_device : public Lcd_device 37 { 38 /* DMA descriptor virtual and physical addresses. */ 39 40 l4_addr_t desc_vaddr, desc_paddr; 41 42 protected: 43 /* Device-specific memory allocation. */ 44 45 int _setup_memory(); 46 47 public: 48 /* Inherit constructor. */ 49 50 Lcd_jz4740_device(Lcd_chip *chip, L4::Cap<Display_device_interface> display) 51 : Lcd_device(chip, display) 52 { 53 _setup_memory(); 54 } 55 56 /* Device operations. */ 57 58 void disable(); 59 void enable(); 60 61 l4_size_t get_framebuffer_size() 62 { 63 return static_cast<Lcd_jz4740_chip *>(_chip)->get_screen_size(); 64 } 65 66 void get_view_info(l4re_video_view_info_t *view_info); 67 68 /* Common device instance. */ 69 70 static Lcd_jz4740_device *device; 71 }; 72 73 #endif