1 /* 2 * LCD device support for the JZ4740 and related SoCs. 3 * 4 * Copyright (C) 2018, 2023 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 26 #include "lcd-device.h" 27 28 #include <l4/re/dma_space> 29 #include <l4/re/c/video/view.h> 30 #include <l4/sys/types.h> 31 32 /* C++ language interface. */ 33 34 #ifdef __cplusplus 35 36 /* Support for specific JZ4740-based devices. */ 37 38 class Lcd_jz4740_device : public Lcd_device 39 { 40 /* DMA descriptor virtual and physical addresses. */ 41 42 l4_addr_t desc_vaddr; 43 L4Re::Dma_space::Dma_addr desc_paddr; 44 45 protected: 46 /* Device-specific memory allocation. */ 47 48 int _setup_memory(); 49 50 public: 51 /* Inherit constructor. */ 52 53 Lcd_jz4740_device(Lcd_chip *chip, L4::Cap<Display_device_interface> display) 54 : Lcd_device(chip, display) 55 { 56 _setup_memory(); 57 } 58 59 /* Device operations. */ 60 61 void disable(); 62 void enable(); 63 64 l4_size_t get_framebuffer_size() 65 { 66 return static_cast<Lcd_jz4740_chip *>(_chip)->get_screen_size(); 67 } 68 69 void get_view_info(l4re_video_view_info_t *view_info); 70 71 /* Common device instance. */ 72 73 static Lcd_jz4740_device *device; 74 }; 75 76 #endif