blob: 3af90c9d8990db02d4efc36440775e1f32a3de94 [file] [log] [blame]
/*
* Copyright (c) 2017 Jan Van Winkel <jan.van_winkel@dxplore.eu>
* Copyright (c) 2019 Nordic Semiconductor ASA
* Copyright (c) 2020 Teslabs Engineering S.L.
* Copyright (c) 2021 Krivorot Oleg <krivorot.oleg@gmail.com>
* SPDX-License-Identifier: Apache-2.0
*/
#include "display_ili9xxx.h"
#include <dt-bindings/display/ili9xxx.h>
#include <drivers/display.h>
#include <sys/byteorder.h>
#include <logging/log.h>
LOG_MODULE_REGISTER(display_ili9xxx, CONFIG_DISPLAY_LOG_LEVEL);
struct ili9xxx_data {
uint8_t bytes_per_pixel;
enum display_pixel_format pixel_format;
enum display_orientation orientation;
};
int ili9xxx_transmit(const struct device *dev, uint8_t cmd, const void *tx_data,
size_t tx_len)
{
const struct ili9xxx_config *config = dev->config;
int r;
struct spi_buf tx_buf;
struct spi_buf_set tx_bufs = { .buffers = &tx_buf, .count = 1U };
/* send command */
tx_buf.buf = &cmd;
tx_buf.len = 1U;
gpio_pin_set_dt(&config->cmd_data, ILI9XXX_CMD);
r = spi_write_dt(&config->spi, &tx_bufs);
if (r < 0) {
return r;
}
/* send data (if any) */
if (tx_data != NULL) {
tx_buf.buf = (void *)tx_data;
tx_buf.len = tx_len;
gpio_pin_set_dt(&config->cmd_data, ILI9XXX_DATA);
r = spi_write_dt(&config->spi, &tx_bufs);
if (r < 0) {
return r;
}
}
return 0;
}
static int ili9xxx_exit_sleep(const struct device *dev)
{
int r;
r = ili9xxx_transmit(dev, ILI9XXX_SLPOUT, NULL, 0);
if (r < 0) {
return r;
}
k_sleep(K_MSEC(ILI9XXX_SLEEP_OUT_TIME));
return 0;
}
static void ili9xxx_hw_reset(const struct device *dev)
{
const struct ili9xxx_config *config = dev->config;
if (config->reset.port == NULL) {
return;
}
gpio_pin_set_dt(&config->reset, 1);
k_sleep(K_MSEC(ILI9XXX_RESET_PULSE_TIME));
gpio_pin_set_dt(&config->reset, 0);
k_sleep(K_MSEC(ILI9XXX_RESET_WAIT_TIME));
}
static int ili9xxx_set_mem_area(const struct device *dev, const uint16_t x,
const uint16_t y, const uint16_t w,
const uint16_t h)
{
int r;
uint16_t spi_data[2];
spi_data[0] = sys_cpu_to_be16(x);
spi_data[1] = sys_cpu_to_be16(x + w - 1U);
r = ili9xxx_transmit(dev, ILI9XXX_CASET, &spi_data[0], 4U);
if (r < 0) {
return r;
}
spi_data[0] = sys_cpu_to_be16(y);
spi_data[1] = sys_cpu_to_be16(y + h - 1U);
r = ili9xxx_transmit(dev, ILI9XXX_PASET, &spi_data[0], 4U);
if (r < 0) {
return r;
}
return 0;
}
static int ili9xxx_write(const struct device *dev, const uint16_t x,
const uint16_t y,
const struct display_buffer_descriptor *desc,
const void *buf)
{
const struct ili9xxx_config *config = dev->config;
struct ili9xxx_data *data = dev->data;
int r;
const uint8_t *write_data_start = (const uint8_t *)buf;
struct spi_buf tx_buf;
struct spi_buf_set tx_bufs;
uint16_t write_cnt;
uint16_t nbr_of_writes;
uint16_t write_h;
__ASSERT(desc->width <= desc->pitch, "Pitch is smaller than width");
__ASSERT((desc->pitch * data->bytes_per_pixel * desc->height) <=
desc->buf_size,
"Input buffer to small");
LOG_DBG("Writing %dx%d (w,h) @ %dx%d (x,y)", desc->width, desc->height,
x, y);
r = ili9xxx_set_mem_area(dev, x, y, desc->width, desc->height);
if (r < 0) {
return r;
}
if (desc->pitch > desc->width) {
write_h = 1U;
nbr_of_writes = desc->height;
} else {
write_h = desc->height;
nbr_of_writes = 1U;
}
r = ili9xxx_transmit(dev, ILI9XXX_RAMWR, write_data_start,
desc->width * data->bytes_per_pixel * write_h);
if (r < 0) {
return r;
}
tx_bufs.buffers = &tx_buf;
tx_bufs.count = 1;
write_data_start += desc->pitch * data->bytes_per_pixel;
for (write_cnt = 1U; write_cnt < nbr_of_writes; ++write_cnt) {
tx_buf.buf = (void *)write_data_start;
tx_buf.len = desc->width * data->bytes_per_pixel * write_h;
r = spi_write_dt(&config->spi, &tx_bufs);
if (r < 0) {
return r;
}
write_data_start += desc->pitch * data->bytes_per_pixel;
}
return 0;
}
static int ili9xxx_read(const struct device *dev, const uint16_t x,
const uint16_t y,
const struct display_buffer_descriptor *desc, void *buf)
{
LOG_ERR("Reading not supported");
return -ENOTSUP;
}
static void *ili9xxx_get_framebuffer(const struct device *dev)
{
LOG_ERR("Direct framebuffer access not supported");
return NULL;
}
static int ili9xxx_display_blanking_off(const struct device *dev)
{
LOG_DBG("Turning display blanking off");
return ili9xxx_transmit(dev, ILI9XXX_DISPON, NULL, 0);
}
static int ili9xxx_display_blanking_on(const struct device *dev)
{
LOG_DBG("Turning display blanking on");
return ili9xxx_transmit(dev, ILI9XXX_DISPOFF, NULL, 0);
}
static int ili9xxx_set_brightness(const struct device *dev,
const uint8_t brightness)
{
LOG_ERR("Set brightness not implemented");
return -ENOTSUP;
}
static int ili9xxx_set_contrast(const struct device *dev,
const uint8_t contrast)
{
LOG_ERR("Set contrast not supported");
return -ENOTSUP;
}
static int
ili9xxx_set_pixel_format(const struct device *dev,
const enum display_pixel_format pixel_format)
{
struct ili9xxx_data *data = dev->data;
int r;
uint8_t tx_data;
uint8_t bytes_per_pixel;
if (pixel_format == PIXEL_FORMAT_RGB_565) {
bytes_per_pixel = 2U;
tx_data = ILI9XXX_PIXSET_MCU_16_BIT | ILI9XXX_PIXSET_RGB_16_BIT;
} else if (pixel_format == PIXEL_FORMAT_RGB_888) {
bytes_per_pixel = 3U;
tx_data = ILI9XXX_PIXSET_MCU_18_BIT | ILI9XXX_PIXSET_RGB_18_BIT;
} else {
LOG_ERR("Unsupported pixel format");
return -ENOTSUP;
}
r = ili9xxx_transmit(dev, ILI9XXX_PIXSET, &tx_data, 1U);
if (r < 0) {
return r;
}
data->pixel_format = pixel_format;
data->bytes_per_pixel = bytes_per_pixel;
return 0;
}
static int ili9xxx_set_orientation(const struct device *dev,
const enum display_orientation orientation)
{
struct ili9xxx_data *data = dev->data;
int r;
uint8_t tx_data = ILI9XXX_MADCTL_BGR;
if (orientation == DISPLAY_ORIENTATION_NORMAL) {
tx_data |= ILI9XXX_MADCTL_MX;
} else if (orientation == DISPLAY_ORIENTATION_ROTATED_90) {
tx_data |= ILI9XXX_MADCTL_MV;
} else if (orientation == DISPLAY_ORIENTATION_ROTATED_180) {
tx_data |= ILI9XXX_MADCTL_MY;
} else if (orientation == DISPLAY_ORIENTATION_ROTATED_270) {
tx_data |= ILI9XXX_MADCTL_MV | ILI9XXX_MADCTL_MX |
ILI9XXX_MADCTL_MY;
}
r = ili9xxx_transmit(dev, ILI9XXX_MADCTL, &tx_data, 1U);
if (r < 0) {
return r;
}
data->orientation = orientation;
return 0;
}
static void ili9xxx_get_capabilities(const struct device *dev,
struct display_capabilities *capabilities)
{
struct ili9xxx_data *data = dev->data;
const struct ili9xxx_config *config = dev->config;
memset(capabilities, 0, sizeof(struct display_capabilities));
capabilities->supported_pixel_formats =
PIXEL_FORMAT_RGB_565 | PIXEL_FORMAT_RGB_888;
capabilities->current_pixel_format = data->pixel_format;
if (data->orientation == DISPLAY_ORIENTATION_NORMAL ||
data->orientation == DISPLAY_ORIENTATION_ROTATED_180) {
capabilities->x_resolution = config->x_resolution;
capabilities->y_resolution = config->y_resolution;
} else {
capabilities->x_resolution = config->y_resolution;
capabilities->y_resolution = config->x_resolution;
}
capabilities->current_orientation = data->orientation;
}
static int ili9xxx_configure(const struct device *dev)
{
const struct ili9xxx_config *config = dev->config;
int r;
enum display_pixel_format pixel_format;
enum display_orientation orientation;
/* pixel format */
if (config->pixel_format == ILI9XXX_PIXEL_FORMAT_RGB565) {
pixel_format = PIXEL_FORMAT_RGB_565;
} else {
pixel_format = PIXEL_FORMAT_RGB_888;
}
r = ili9xxx_set_pixel_format(dev, pixel_format);
if (r < 0) {
return r;
}
/* orientation */
if (config->rotation == 0U) {
orientation = DISPLAY_ORIENTATION_NORMAL;
} else if (config->rotation == 90U) {
orientation = DISPLAY_ORIENTATION_ROTATED_90;
} else if (config->rotation == 180U) {
orientation = DISPLAY_ORIENTATION_ROTATED_180;
} else {
orientation = DISPLAY_ORIENTATION_ROTATED_270;
}
r = ili9xxx_set_orientation(dev, orientation);
if (r < 0) {
return r;
}
if (config->inversion) {
r = ili9xxx_transmit(dev, ILI9XXX_DINVON, NULL, 0U);
if (r < 0) {
return r;
}
}
r = config->regs_init_fn(dev);
if (r < 0) {
return r;
}
return 0;
}
static int ili9xxx_init(const struct device *dev)
{
const struct ili9xxx_config *config = dev->config;
int r;
if (!spi_is_ready(&config->spi)) {
LOG_ERR("SPI device is not ready");
return -ENODEV;
}
if (!device_is_ready(config->cmd_data.port)) {
LOG_ERR("Command/Data GPIO device not ready");
return -ENODEV;
}
r = gpio_pin_configure_dt(&config->cmd_data, GPIO_OUTPUT);
if (r < 0) {
LOG_ERR("Could not configure command/data GPIO (%d)", r);
return r;
}
if (config->reset.port != NULL) {
if (!device_is_ready(config->reset.port)) {
LOG_ERR("Reset GPIO device not ready");
return -ENODEV;
}
r = gpio_pin_configure_dt(&config->reset, GPIO_OUTPUT_INACTIVE);
if (r < 0) {
LOG_ERR("Could not configure reset GPIO (%d)", r);
return r;
}
}
ili9xxx_hw_reset(dev);
r = ili9xxx_transmit(dev, ILI9XXX_SWRESET, NULL, 0);
if (r < 0) {
LOG_ERR("Error transmit command Software Reset (%d)", r);
return r;
}
k_sleep(K_MSEC(ILI9XXX_RESET_WAIT_TIME));
ili9xxx_display_blanking_on(dev);
r = ili9xxx_configure(dev);
if (r < 0) {
LOG_ERR("Could not configure display (%d)", r);
return r;
}
r = ili9xxx_exit_sleep(dev);
if (r < 0) {
LOG_ERR("Could not exit sleep mode (%d)", r);
return r;
}
return 0;
}
static const struct display_driver_api ili9xxx_api = {
.blanking_on = ili9xxx_display_blanking_on,
.blanking_off = ili9xxx_display_blanking_off,
.write = ili9xxx_write,
.read = ili9xxx_read,
.get_framebuffer = ili9xxx_get_framebuffer,
.set_brightness = ili9xxx_set_brightness,
.set_contrast = ili9xxx_set_contrast,
.get_capabilities = ili9xxx_get_capabilities,
.set_pixel_format = ili9xxx_set_pixel_format,
.set_orientation = ili9xxx_set_orientation,
};
#define INST_DT_ILI9XXX(n, t) DT_INST(n, ilitek_ili##t)
#define ILI9XXX_INIT(n, t) \
ILI##t##_REGS_INIT(n); \
\
static const struct ili9xxx_config ili9xxx_config_##n = { \
.spi = SPI_DT_SPEC_GET(INST_DT_ILI9XXX(n, t), \
SPI_OP_MODE_MASTER | SPI_WORD_SET(8), \
0), \
.cmd_data = GPIO_DT_SPEC_GET(INST_DT_ILI9XXX(n, t), \
cmd_data_gpios), \
.reset = GPIO_DT_SPEC_GET_OR(INST_DT_ILI9XXX(n, t), \
reset_gpios, {0}), \
.pixel_format = DT_PROP(INST_DT_ILI9XXX(n, t), pixel_format), \
.rotation = DT_PROP(INST_DT_ILI9XXX(n, t), rotation), \
.x_resolution = ILI##t##_X_RES, \
.y_resolution = ILI##t##_Y_RES, \
.inversion = DT_PROP(INST_DT_ILI9XXX(n, t), display_inversion),\
.regs = &ili9xxx_regs_##n, \
.regs_init_fn = ili##t##_regs_init, \
}; \
\
static struct ili9xxx_data ili9xxx_data_##n; \
\
DEVICE_DT_DEFINE(INST_DT_ILI9XXX(n, t), ili9xxx_init, \
NULL, &ili9xxx_data_##n, \
&ili9xxx_config_##n, POST_KERNEL, \
CONFIG_DISPLAY_INIT_PRIORITY, &ili9xxx_api);
#define DT_INST_FOREACH_ILI9XXX_STATUS_OKAY(t) \
UTIL_LISTIFY(DT_NUM_INST_STATUS_OKAY(ilitek_ili##t), ILI9XXX_INIT, t)
#ifdef CONFIG_ILI9340
#include "display_ili9340.h"
DT_INST_FOREACH_ILI9XXX_STATUS_OKAY(9340);
#endif
#ifdef CONFIG_ILI9341
#include "display_ili9341.h"
DT_INST_FOREACH_ILI9XXX_STATUS_OKAY(9341);
#endif
#ifdef CONFIG_ILI9488
#include "display_ili9488.h"
DT_INST_FOREACH_ILI9XXX_STATUS_OKAY(9488);
#endif