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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
-
- 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,
- .append_pixels = qp_tft_panel_append_pixels,
- },
- .rgb888_to_native16bit = qp_rgb888_to_rgb565_swapped,
- .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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