// SPDX-License-Identifier: GPL-2.0 /* Driver for ORISE Technology OTM3225A SOC for TFT LCD * Copyright (C) 2017, EETS GmbH, Felix Brack <[email protected]> * * This driver implements a lcd device for the ORISE OTM3225A display * controller. The control interface to the display is SPI and the display's * memory is updated over the 16-bit RGB interface. * The main source of information for writing this driver was provided by the * OTM3225A datasheet from ORISE Technology. Some information arise from the * ILI9328 datasheet from ILITEK as well as from the datasheets and sample code * provided by Crystalfontz America Inc. who sells the CFAF240320A-032T, a 3.2" * TFT LC display using the OTM3225A controller. */ #include <linux/delay.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/lcd.h> #include <linux/module.h> #include <linux/spi/spi.h> #define OTM3225A_INDEX_REG … #define OTM3225A_DATA_REG … /* instruction register list */ #define DRIVER_OUTPUT_CTRL_1 … #define DRIVER_WAVEFORM_CTRL … #define ENTRY_MODE … #define SCALING_CTRL … #define DISPLAY_CTRL_1 … #define DISPLAY_CTRL_2 … #define DISPLAY_CTRL_3 … #define FRAME_CYCLE_CTRL … #define EXT_DISP_IFACE_CTRL_1 … #define FRAME_MAKER_POS … #define EXT_DISP_IFACE_CTRL_2 … #define POWER_CTRL_1 … #define POWER_CTRL_2 … #define POWER_CTRL_3 … #define POWER_CTRL_4 … #define GRAM_ADDR_HORIZ_SET … #define GRAM_ADDR_VERT_SET … #define GRAM_READ_WRITE … #define POWER_CTRL_7 … #define FRAME_RATE_CTRL … #define GAMMA_CTRL_1 … #define GAMMA_CTRL_2 … #define GAMMA_CTRL_3 … #define GAMMA_CTRL_4 … #define GAMMA_CTRL_5 … #define GAMMA_CTRL_6 … #define GAMMA_CTRL_7 … #define GAMMA_CTRL_8 … #define GAMMA_CTRL_9 … #define GAMMA_CTRL_10 … #define WINDOW_HORIZ_RAM_START … #define WINDOW_HORIZ_RAM_END … #define WINDOW_VERT_RAM_START … #define WINDOW_VERT_RAM_END … #define DRIVER_OUTPUT_CTRL_2 … #define BASE_IMG_DISPLAY_CTRL … #define VERT_SCROLL_CTRL … #define PD1_DISPLAY_POS … #define PD1_RAM_START … #define PD1_RAM_END … #define PD2_DISPLAY_POS … #define PD2_RAM_START … #define PD2_RAM_END … #define PANEL_IFACE_CTRL_1 … #define PANEL_IFACE_CTRL_2 … #define PANEL_IFACE_CTRL_4 … #define PANEL_IFACE_CTRL_5 … struct otm3225a_data { … }; struct otm3225a_spi_instruction { … }; static struct otm3225a_spi_instruction display_init[] = …; static struct otm3225a_spi_instruction display_enable_rgb_interface[] = …; static struct otm3225a_spi_instruction display_off[] = …; static struct otm3225a_spi_instruction display_on[] = …; static void otm3225a_write(struct spi_device *spi, struct otm3225a_spi_instruction *instruction, unsigned int count) { … } static int otm3225a_set_power(struct lcd_device *ld, int power) { … } static int otm3225a_get_power(struct lcd_device *ld) { … } static const struct lcd_ops otm3225a_ops = …; static int otm3225a_probe(struct spi_device *spi) { … } static struct spi_driver otm3225a_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_VERSION(…) …; MODULE_LICENSE(…) …;
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