c771f883f2
This device implements the IM120417002 colors shield v1.1 for Arduino (which relies on the DM163 8x3-channel led driving logic) and features a simple display of an 8x8 RGB matrix. The columns of the matrix are driven by the DM163 and the rows are driven externally. Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr> Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20240424200929.240921-2-ines.varhol@telecom-paris.fr [PMM: updated to new reset hold method prototype] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* QEMU DM163 8x3-channel constant current led driver
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* driving columns of associated 8x8 RGB matrix.
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*
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* Copyright (C) 2024 Samuel Tardieu <sam@rfc1149.net>
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* Copyright (C) 2024 Arnaud Minier <arnaud.minier@telecom-paris.fr>
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* Copyright (C) 2024 Inès Varhol <ines.varhol@telecom-paris.fr>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef HW_DISPLAY_DM163_H
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#define HW_DISPLAY_DM163_H
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#include "qom/object.h"
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#include "hw/qdev-core.h"
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#define TYPE_DM163 "dm163"
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OBJECT_DECLARE_SIMPLE_TYPE(DM163State, DM163);
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#define RGB_MATRIX_NUM_ROWS 8
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#define RGB_MATRIX_NUM_COLS 8
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#define DM163_NUM_LEDS (RGB_MATRIX_NUM_COLS * 3)
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/* The last row is filled with 0 (turned off row) */
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#define COLOR_BUFFER_SIZE (RGB_MATRIX_NUM_ROWS + 1)
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typedef struct DM163State {
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DeviceState parent_obj;
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/* DM163 driver */
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uint64_t bank0_shift_register[3];
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uint64_t bank1_shift_register[3];
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uint16_t latched_outputs[DM163_NUM_LEDS];
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uint16_t outputs[DM163_NUM_LEDS];
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qemu_irq sout;
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uint8_t sin;
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uint8_t dck;
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uint8_t rst_b;
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uint8_t lat_b;
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uint8_t selbk;
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uint8_t en_b;
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/* IM120417002 colors shield */
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uint8_t activated_rows;
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/* 8x8 RGB matrix */
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QemuConsole *console;
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uint8_t redraw;
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/* Rows currently being displayed on the matrix. */
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/* The last row is filled with 0 (turned off row) */
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uint32_t buffer[COLOR_BUFFER_SIZE][RGB_MATRIX_NUM_COLS];
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uint8_t last_buffer_idx;
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uint8_t buffer_idx_of_row[RGB_MATRIX_NUM_ROWS];
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/* Used to simulate retinal persistence of rows */
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uint8_t row_persistence_delay[RGB_MATRIX_NUM_ROWS];
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} DM163State;
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#endif /* HW_DISPLAY_DM163_H */
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