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// Copyright 2021 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later
#include "qp_internal.h"
#include "qp_comms.h"
#include "qp_ssd1351.h"
#include "qp_ssd1351_opcodes.h"
#include "qp_tft_panel.h"
#ifdef QUANTUM_PAINTER_SSD1351_SPI_ENABLE
# include "qp_comms_spi.h"
#endif // QUANTUM_PAINTER_SSD1351_SPI_ENABLE
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Common
// Driver storage
tft_panel_dc_reset_painter_device_t ssd1351_drivers[SSD1351_NUM_DEVICES] = {0};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Initialization
__attribute__((weak)) bool qp_ssd1351_init(painter_device_t device, painter_rotation_t rotation) {
tft_panel_dc_reset_painter_device_t *driver = (tft_panel_dc_reset_painter_device_t *)device;
// clang-format off
const uint8_t ssd1351_init_sequence[] = {
// Command, Delay, N, Data[N]
SSD1351_COMMANDLOCK, 5, 1, 0x12,
SSD1351_COMMANDLOCK, 5, 1, 0xB1,
SSD1351_DISPLAYOFF, 5, 0,
SSD1351_CLOCKDIV, 5, 1, 0xF1,
SSD1351_MUXRATIO, 5, 1, 0x7F,
SSD1351_DISPLAYOFFSET, 5, 1, 0x00,
SSD1351_SETGPIO, 5, 1, 0x00,
SSD1351_FUNCTIONSELECT, 5, 1, 0x01,
SSD1351_PRECHARGE, 5, 1, 0x32,
SSD1351_VCOMH, 5, 1, 0x05,
SSD1351_NORMALDISPLAY, 5, 0,
SSD1351_CONTRASTABC, 5, 3, 0xC8, 0x80, 0xC8,
SSD1351_CONTRASTMASTER, 5, 1, 0x0F,
SSD1351_SETVSL, 5, 3, 0xA0, 0xB5, 0x55,
SSD1351_PRECHARGE2, 5, 1, 0x01,
SSD1351_DISPLAYON, 5, 0,
};
// clang-format on
qp_comms_bulk_command_sequence(device, ssd1351_init_sequence, sizeof(ssd1351_init_sequence));
// Configure the rotation (i.e. the ordering and direction of memory writes in GRAM)
const uint8_t madctl[] = {
[QP_ROTATION_0] = SSD1351_MADCTL_BGR | SSD1351_MADCTL_MY,
[QP_ROTATION_90] = SSD1351_MADCTL_BGR | SSD1351_MADCTL_MX | SSD1351_MADCTL_MY | SSD1351_MADCTL_MV,
[QP_ROTATION_180] = SSD1351_MADCTL_BGR | SSD1351_MADCTL_MX,
[QP_ROTATION_270] = SSD1351_MADCTL_BGR | SSD1351_MADCTL_MV,
};
qp_comms_command_databyte(device, SSD1351_SETREMAP, madctl[rotation]);
qp_comms_command_databyte(device, SSD1351_STARTLINE, (rotation == QP_ROTATION_0 || rotation == QP_ROTATION_90) ? driver->base.panel_height : 0);
return true;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Driver vtable
const struct tft_panel_dc_reset_painter_driver_vtable_t ssd1351_driver_vtable = {
.base =
{
.init = qp_ssd1351_init,
.power = qp_tft_panel_power,
.clear = qp_tft_panel_clear,
.flush = qp_tft_panel_flush,
.pixdata = qp_tft_panel_pixdata,
.viewport = qp_tft_panel_viewport,
.palette_convert = qp_tft_panel_palette_convert_rgb565_swapped,
.append_pixels = qp_tft_panel_append_pixels_rgb565,
.append_pixdata = qp_tft_panel_append_pixdata,
},
.num_window_bytes = 1,
.swap_window_coords = true,
.opcodes =
{
.display_on = SSD1351_DISPLAYON,
.display_off = SSD1351_DISPLAYOFF,
.set_column_address = SSD1351_SETCOLUMN,
.set_row_address = SSD1351_SETROW,
.enable_writes = SSD1351_WRITERAM,
},
};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// SPI
#ifdef QUANTUM_PAINTER_SSD1351_SPI_ENABLE
// Factory function for creating a handle to the SSD1351 device
painter_device_t qp_ssd1351_make_spi_device(uint16_t panel_width, uint16_t panel_height, pin_t chip_select_pin, pin_t dc_pin, pin_t reset_pin, uint16_t spi_divisor, int spi_mode) {
for (uint32_t i = 0; i < SSD1351_NUM_DEVICES; ++i) {
tft_panel_dc_reset_painter_device_t *driver = &ssd1351_drivers[i];
if (!driver->base.driver_vtable) {
driver->base.driver_vtable = (const struct painter_driver_vtable_t *)&ssd1351_driver_vtable;
driver->base.comms_vtable = (const struct painter_comms_vtable_t *)&spi_comms_with_dc_vtable;
driver->base.panel_width = panel_width;
driver->base.panel_height = panel_height;
driver->base.rotation = QP_ROTATION_0;
driver->base.offset_x = 0;
driver->base.offset_y = 0;
driver->base.native_bits_per_pixel = 16; // RGB565
// SPI and other pin configuration
driver->base.comms_config = &driver->spi_dc_reset_config;
driver->spi_dc_reset_config.spi_config.chip_select_pin = chip_select_pin;
driver->spi_dc_reset_config.spi_config.divisor = spi_divisor;
driver->spi_dc_reset_config.spi_config.lsb_first = false;
driver->spi_dc_reset_config.spi_config.mode = spi_mode;
driver->spi_dc_reset_config.dc_pin = dc_pin;
driver->spi_dc_reset_config.reset_pin = reset_pin;
return (painter_device_t)driver;
}
}
return NULL;
}
#endif // QUANTUM_PAINTER_SSD1351_SPI_ENABLE
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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