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