From 36b79798bddc8d28170c2db4154792d3f8345dcf Mon Sep 17 00:00:00 2001
From: zbtrs <32517549+zbtrs@users.noreply.github.com>
Date: Mon, 25 Sep 2023 08:40:03 +0800
Subject: [PATCH] feat: support sdl2 (#8048)

---
 bsp/allwinner/libraries/drivers/drv_lcd.c | 122 +++++++++++++++++++++-
 bsp/allwinner/libraries/drivers/drv_lcd.h |  10 +-
 components/drivers/include/drivers/lcd.h  |   1 +
 3 files changed, 120 insertions(+), 13 deletions(-)

diff --git a/bsp/allwinner/libraries/drivers/drv_lcd.c b/bsp/allwinner/libraries/drivers/drv_lcd.c
index 634e33f9f3..327aa777fe 100644
--- a/bsp/allwinner/libraries/drivers/drv_lcd.c
+++ b/bsp/allwinner/libraries/drivers/drv_lcd.c
@@ -1,11 +1,12 @@
 /*
- * Copyright (c) 2006-2022, RT-Thread Development Team
+ * Copyright (c) 2006-2023, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2018-04-12     RT-Thread    the first version
+ * 2023-09-02     zbtrs        support sdl2
  */
 
 #include "rtthread.h"
@@ -28,12 +29,14 @@
 #endif
 
 #include <video/sunxi_display2.h>
+#include <dfs_file.h>
 #include "dev_disp.h"
 
 #define DEFAULT_SCREEN (0)
 
 #define LCD_DRV_FB_SZ (lcd_drv->lcd_info.width * lcd_drv->lcd_info.height * sizeof(rt_uint32_t))
 
+
 enum state_buff
 {
     EMPTY,
@@ -56,10 +59,10 @@ struct buff_info
 struct lcd_device
 {
     struct rt_device lcd;
+    struct rt_device fb;
     struct rt_device_graphic_info lcd_info; /* rtdef.h */
     struct rt_event lcd_evt;
     int use_screen; /* screen index */
-
     void *framebuffer;
     void *framebuffer_phy;
 
@@ -82,6 +85,8 @@ extern void rt_hw_cpu_dcache_clean(void *addr, int size);
 extern int disp_ioctl(int cmd, void *arg);
 extern int disp_probe(void);
 
+struct lcd_device *g_lcd = RT_NULL;
+
 /* set up the lcd pin function */
 static void lcd_gpio_config(void)
 {
@@ -418,8 +423,6 @@ static rt_err_t rt_lcd_init(rt_device_t dev)
     return RT_EOK;
 }
 
-struct lcd_device *g_lcd = RT_NULL;
-
 void turn_on_lcd_backlight(void)
 {
     if (_panel->bl_pin >= 0)
@@ -610,6 +613,110 @@ static rt_err_t rt_lcd_control(rt_device_t dev, int cmd, void *args)
     return RT_EOK;
 }
 
+static rt_err_t fb_open(rt_device_t dev,rt_uint16_t oflag)
+{
+    return RT_EOK;
+}
+
+static rt_err_t fb_close(rt_device_t dev)
+{
+    return RT_EOK;
+}
+
+static rt_err_t fb_control(rt_device_t dev, int cmd, void *args)
+{
+    switch(cmd) {
+        case FBIOGET_PIXELINFO:
+        {
+            int *fmt = (int *)args;
+            *fmt = RTGRAPHIC_PIXEL_FORMAT_ARGB888;
+            break;
+        }
+        case FBIOPAN_DISPLAY:
+        {
+            struct lcd_device *lcd_drv = g_lcd;
+            rt_hw_cpu_dcache_clean(lcd_drv->framebuffer, LCD_DRV_FB_SZ);
+            rt_lcd_control((rt_device_t)g_lcd, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
+            break;
+        }
+        case FBIOGET_FSCREENINFO:
+        {
+            rt_lcd_control((rt_device_t)g_lcd,FBIOGET_FSCREENINFO,args);
+            break;
+        }
+        case FBIOGET_VSCREENINFO:
+        {
+            struct lcd_device *lcd_drv = g_lcd;
+            struct fb_var_screeninfo *info = (struct fb_var_screeninfo *)args;
+            info->xres = lcd_drv->lcd_info.width;
+            info->yres = lcd_drv->lcd_info.height;
+            break;
+        }
+        case RT_FIOMMAP2:
+        {
+            struct dfs_mmap2_args *mmap2 = (struct dfs_mmap2_args *)args;
+            if (mmap2)
+            {
+                mmap2->ret = lwp_map_user_phy(lwp_self(),RT_NULL,g_lcd->framebuffer,mmap2->length,1);
+            }
+            else
+            {
+                return -EIO;
+            }
+
+            break;
+        }
+        default:
+            break;
+    }
+
+    return RT_EOK;
+}
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops fb_ops =
+{
+    RT_NULL,
+    fb_open,
+    fb_close,
+    RT_NULL,
+    RT_NULL,
+    fb_control
+};
+#endif
+
+/* register framebuffer device */
+static int fb_init(rt_device_t fb)
+{
+    static rt_bool_t fb_init_ok = RT_FALSE;
+
+    if (fb_init_ok)
+    {
+        return 0;
+    }
+    RT_ASSERT(!rt_device_find("fb0"));
+    fb->type    = RT_Device_Class_Miscellaneous;
+
+#ifdef RT_USING_DEVICE_OPS
+    fb->ops     = &fb_ops;
+#else
+
+    fb->init    = RT_NULL;
+    fb->open    = fb_open;
+    fb->close   = fb_close;
+    fb->read    = RT_NULL;
+    fb->write   = RT_NULL;
+    fb->control = fb_control;
+    fb->user_data = RT_NULL;
+#endif
+
+    rt_device_register(fb,"fb0",RT_DEVICE_FLAG_RDWR);
+
+    fb_init_ok = RT_TRUE;
+
+    return RT_EOK;
+}
+
 /* set up the 'lcd_device' and register it */
 int rt_hw_lcd_init(void)
 {
@@ -635,6 +742,12 @@ int rt_hw_lcd_init(void)
 
     rt_lcd_init((rt_device_t)lcd_drv);
 
+    if (fb_init(&(lcd_drv->fb)) != RT_EOK)
+    {
+        rt_kprintf("fb device init failure\n");
+        return -RT_ERROR;
+    }
+
     return RT_EOK;
 }
 // INIT_DEVICE_EXPORT(rt_hw_lcd_init);
@@ -697,5 +810,4 @@ void lcd_pwm_test(int argc, char **argv)
 }
 
 MSH_CMD_EXPORT(lcd_pwm_test, set pwm);
-
 #endif
diff --git a/bsp/allwinner/libraries/drivers/drv_lcd.h b/bsp/allwinner/libraries/drivers/drv_lcd.h
index 58a398d86d..ca91c336ca 100644
--- a/bsp/allwinner/libraries/drivers/drv_lcd.h
+++ b/bsp/allwinner/libraries/drivers/drv_lcd.h
@@ -6,12 +6,14 @@
  * Change Logs:
  * Date           Author       Notes
  * 2018-04-12     RT-Thread    the first version
+ * 2023-09-02     zbtrs        support SDL2
  */
 
 #ifndef __DRV_LCD_H__
 #define __DRV_LCD_H__
 
 #include <stdint.h>
+#include "drivers/lcd.h"
 
 #define REVERSE_X       (1<<0)
 #define REVERSE_Y       (1<<1)
@@ -19,16 +21,8 @@
 
 int rt_hw_lcd_init(void);
 
-#define FBIOGET_FSCREENINFO     0x4602
 
-struct fb_fix_screeninfo
-{
-    char id[16];
-    unsigned long smem_start;
-    uint32_t smem_len;
 
-    uint32_t line_length;
-};
 rt_uint8_t get_lcd_backlight(void);
 void set_lcd_backlight(rt_uint8_t value);
 void turn_down_lcd_backlight(void);
diff --git a/components/drivers/include/drivers/lcd.h b/components/drivers/include/drivers/lcd.h
index 04e7038cfe..f2dcdce445 100644
--- a/components/drivers/include/drivers/lcd.h
+++ b/components/drivers/include/drivers/lcd.h
@@ -17,6 +17,7 @@
 #define FBIOGET_VSCREENINFO     0x4600
 #define FBIOPUT_VSCREENINFO     0x4601
 #define FBIOGET_FSCREENINFO     0x4602
+#define FBIOGET_PIXELINFO       0x4603
 #define FBIOGETCMAP             0x4604
 #define FBIOPUTCMAP             0x4605
 #define FBIOPAN_DISPLAY         0x4606