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/**
* @file lv_nuttx_lcd.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_nuttx_lcd.h"
#if LV_USE_NUTTX
#if LV_USE_NUTTX_LCD
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <debug.h>
#include <errno.h>
#include <fcntl.h>
#include <nuttx/lcd/lcd_dev.h>
#include "../../../lvgl.h"
#include "../../lvgl_private.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
/* fd should be defined at the beginning */
int fd;
lv_display_t * disp;
struct lcddev_area_s area;
struct lcddev_area_align_s align_info;
} lv_nuttx_lcd_t;
/**********************
* STATIC PROTOTYPES
**********************/
static int32_t align_round_up(int32_t v, uint16_t align);
static void rounder_cb(lv_event_t * e);
static void flush_cb(lv_display_t * disp, const lv_area_t * area_p,
uint8_t * color_p);
static lv_display_t * lcd_init(int fd, int hor_res, int ver_res);
static void display_release_cb(lv_event_t * e);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_display_t * lv_nuttx_lcd_create(const char * dev_path)
{
struct fb_videoinfo_s vinfo;
struct lcd_planeinfo_s pinfo;
lv_display_t * disp;
int fd;
int ret;
LV_ASSERT_NULL(dev_path);
LV_LOG_USER("lcd %s opening", dev_path);
fd = open(dev_path, 0);
if(fd < 0) {
perror("Error: cannot open lcd device");
return NULL;
}
LV_LOG_USER("lcd %s open success", dev_path);
ret = ioctl(fd, LCDDEVIO_GETVIDEOINFO,
(unsigned long)((uintptr_t)&vinfo));
if(ret < 0) {
perror("Error: ioctl(LCDDEVIO_GETVIDEOINFO) failed");
close(fd);
return NULL;
}
ret = ioctl(fd, LCDDEVIO_GETPLANEINFO,
(unsigned long)((uintptr_t)&pinfo));
if(ret < 0) {
perror("ERROR: ioctl(LCDDEVIO_GETPLANEINFO) failed");
close(fd);
return NULL;
}
disp = lcd_init(fd, vinfo.xres, vinfo.yres);
if(disp == NULL) {
close(fd);
}
return disp;
}
/**********************
* STATIC FUNCTIONS
**********************/
static int32_t align_round_up(int32_t v, uint16_t align)
{
return (v + align - 1) & ~(align - 1);
}
static void rounder_cb(lv_event_t * e)
{
lv_nuttx_lcd_t * lcd = lv_event_get_user_data(e);
lv_area_t * area = lv_event_get_param(e);
struct lcddev_area_align_s * align_info = &lcd->align_info;
int32_t w;
int32_t h;
area->x1 &= ~(align_info->col_start_align - 1);
area->y1 &= ~(align_info->row_start_align - 1);
w = align_round_up(lv_area_get_width(area), align_info->width_align);
h = align_round_up(lv_area_get_height(area), align_info->height_align);
area->x2 = area->x1 + w - 1;
area->y2 = area->y1 + h - 1;
}
static void flush_cb(lv_display_t * disp, const lv_area_t * area_p,
uint8_t * color_p)
{
lv_nuttx_lcd_t * lcd = disp->driver_data;
lcd->area.row_start = area_p->y1;
lcd->area.row_end = area_p->y2;
lcd->area.col_start = area_p->x1;
lcd->area.col_end = area_p->x2;
lcd->area.data = (uint8_t *)color_p;
ioctl(lcd->fd, LCDDEVIO_PUTAREA, (unsigned long) & (lcd->area));
lv_display_flush_ready(disp);
}
static lv_display_t * lcd_init(int fd, int hor_res, int ver_res)
{
lv_color_t * draw_buf = NULL;
lv_color_t * draw_buf_2 = NULL;
lv_nuttx_lcd_t * lcd = lv_malloc_zeroed(sizeof(lv_nuttx_lcd_t));
LV_ASSERT_MALLOC(lcd);
if(lcd == NULL) {
LV_LOG_ERROR("lv_nuttx_lcd_t malloc failed");
return NULL;
}
lv_display_t * disp = lv_display_create(hor_res, ver_res);
if(disp == NULL) {
lv_free(lcd);
return NULL;
}
uint32_t px_size = lv_color_format_get_size(lv_display_get_color_format(disp));
#if LV_NUTTX_LCD_BUFFER_COUNT > 0
uint32_t buf_size = hor_res * ver_res * px_size;
lv_display_render_mode_t render_mode = LV_DISPLAY_RENDER_MODE_FULL;
#else
uint32_t buf_size = hor_res * LV_NUTTX_LCD_BUFFER_SIZE * px_size;
lv_display_render_mode_t render_mode = LV_DISPLAY_RENDER_MODE_PARTIAL;
#endif
draw_buf = lv_malloc(buf_size);
if(draw_buf == NULL) {
LV_LOG_ERROR("display draw_buf malloc failed");
lv_free(lcd);
return NULL;
}
#if LV_NUTTX_LCD_BUFFER_COUNT == 2
draw_buf_2 = lv_malloc(buf_size);
if(draw_buf_2 == NULL) {
LV_LOG_ERROR("display draw_buf_2 malloc failed");
lv_free(lcd);
lv_free(draw_buf);
return NULL;
}
#endif
lcd->fd = fd;
if(ioctl(fd, LCDDEVIO_GETAREAALIGN, &lcd->align_info) < 0) {
perror("Error: ioctl(LCDDEVIO_GETAREAALIGN) failed");
}
lcd->disp = disp;
lv_display_set_buffers(lcd->disp, draw_buf, draw_buf_2, buf_size, render_mode);
lv_display_set_flush_cb(lcd->disp, flush_cb);
lv_display_add_event_cb(lcd->disp, rounder_cb, LV_EVENT_INVALIDATE_AREA, lcd);
lv_display_add_event_cb(lcd->disp, display_release_cb, LV_EVENT_DELETE, lcd->disp);
lv_display_set_driver_data(lcd->disp, lcd);
return lcd->disp;
}
static void display_release_cb(lv_event_t * e)
{
lv_display_t * disp = (lv_display_t *) lv_event_get_user_data(e);
lv_nuttx_lcd_t * dsc = lv_display_get_driver_data(disp);
if(dsc) {
lv_display_set_driver_data(disp, NULL);
lv_display_set_flush_cb(disp, NULL);
/* clear display buffer */
if(disp->buf_1) {
lv_free(disp->buf_1);
disp->buf_1 = NULL;
}
if(disp->buf_2) {
lv_free(disp->buf_2);
disp->buf_2 = NULL;
}
/* close device fb */
if(dsc->fd >= 0) {
close(dsc->fd);
dsc->fd = -1;
}
lv_free(dsc);
LV_LOG_USER("Done");
}
}
#endif /*LV_USE_NUTTX_LCD*/
#endif /* LV_USE_NUTTX*/
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