blob: 630ed57a045bf55fb19c2bb3ad0ffddabd2f4d6f [file] [log] [blame]
/*
* Copyright (c) 2018 Jan Van Winkel <jan.van_winkel@dxplore.eu>
* Copyright (c) 2021 Nordic Semiconductor
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT zephyr_dummy_dc
#include <errno.h>
#include <string.h>
#include <zephyr/drivers/display.h>
#include <zephyr/device.h>
struct dummy_display_config {
uint16_t height;
uint16_t width;
};
struct dummy_display_data {
enum display_pixel_format current_pixel_format;
};
static int dummy_display_init(const struct device *dev)
{
struct dummy_display_data *disp_data = dev->data;
disp_data->current_pixel_format = PIXEL_FORMAT_ARGB_8888;
return 0;
}
static int dummy_display_write(const struct device *dev, const uint16_t x,
const uint16_t y,
const struct display_buffer_descriptor *desc,
const void *buf)
{
const struct dummy_display_config *config = dev->config;
__ASSERT(desc->width <= desc->pitch, "Pitch is smaller then width");
__ASSERT(desc->pitch <= config->width,
"Pitch in descriptor is larger than screen size");
__ASSERT(desc->height <= config->height,
"Height in descriptor is larger than screen size");
__ASSERT(x + desc->pitch <= config->width,
"Writing outside screen boundaries in horizontal direction");
__ASSERT(y + desc->height <= config->height,
"Writing outside screen boundaries in vertical direction");
if (desc->width > desc->pitch ||
x + desc->pitch > config->width ||
y + desc->height > config->height) {
return -EINVAL;
}
return 0;
}
static int dummy_display_read(const struct device *dev, const uint16_t x,
const uint16_t y,
const struct display_buffer_descriptor *desc,
void *buf)
{
return -ENOTSUP;
}
static void *dummy_display_get_framebuffer(const struct device *dev)
{
return NULL;
}
static int dummy_display_blanking_off(const struct device *dev)
{
return 0;
}
static int dummy_display_blanking_on(const struct device *dev)
{
return 0;
}
static int dummy_display_set_brightness(const struct device *dev,
const uint8_t brightness)
{
return 0;
}
static int dummy_display_set_contrast(const struct device *dev,
const uint8_t contrast)
{
return 0;
}
static void dummy_display_get_capabilities(const struct device *dev,
struct display_capabilities *capabilities)
{
const struct dummy_display_config *config = dev->config;
struct dummy_display_data *disp_data = dev->data;
memset(capabilities, 0, sizeof(struct display_capabilities));
capabilities->x_resolution = config->width;
capabilities->y_resolution = config->height;
capabilities->supported_pixel_formats = PIXEL_FORMAT_ARGB_8888 |
PIXEL_FORMAT_RGB_888 |
PIXEL_FORMAT_MONO01 |
PIXEL_FORMAT_MONO10;
capabilities->current_pixel_format = disp_data->current_pixel_format;
capabilities->screen_info = SCREEN_INFO_MONO_VTILED |
SCREEN_INFO_MONO_MSB_FIRST;
}
static int dummy_display_set_pixel_format(const struct device *dev,
const enum display_pixel_format pixel_format)
{
struct dummy_display_data *disp_data = dev->data;
disp_data->current_pixel_format = pixel_format;
return 0;
}
static const struct display_driver_api dummy_display_api = {
.blanking_on = dummy_display_blanking_on,
.blanking_off = dummy_display_blanking_off,
.write = dummy_display_write,
.read = dummy_display_read,
.get_framebuffer = dummy_display_get_framebuffer,
.set_brightness = dummy_display_set_brightness,
.set_contrast = dummy_display_set_contrast,
.get_capabilities = dummy_display_get_capabilities,
.set_pixel_format = dummy_display_set_pixel_format,
};
#define DISPLAY_DUMMY_DEFINE(n) \
static const struct dummy_display_config dd_config_##n = { \
.height = DT_INST_PROP(n, height), \
.width = DT_INST_PROP(n, width), \
}; \
\
static struct dummy_display_data dd_data_##n; \
\
DEVICE_DT_INST_DEFINE(n, &dummy_display_init, NULL, \
&dd_data_##n, \
&dd_config_##n, \
POST_KERNEL, \
CONFIG_DISPLAY_INIT_PRIORITY, \
&dummy_display_api); \
DT_INST_FOREACH_STATUS_OKAY(DISPLAY_DUMMY_DEFINE)