78 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/* drivers/video/backlight/ili9320.h3 *4 * ILI9320 LCD controller driver core.5 *6 * Copyright 2007 Simtec Electronics7 * Ben Dooks <ben@simtec.co.uk>8 *9 * http://armlinux.simtec.co.uk/10*/11 12/* Holder for register and value pairs. */13struct ili9320_reg {14 unsigned short address;15 unsigned short value;16};17 18struct ili9320;19 20struct ili9320_client {21 const char *name;22 int (*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);23 24};25/* Device attached via an SPI bus. */26struct ili9320_spi {27 struct spi_device *dev;28 struct spi_message message;29 struct spi_transfer xfer[2];30 31 unsigned char id;32 unsigned char buffer_addr[4];33 unsigned char buffer_data[4];34};35 36/* ILI9320 device state. */37struct ili9320 {38 union {39 struct ili9320_spi spi; /* SPI attachged device. */40 } access; /* Register access method. */41 42 struct device *dev;43 struct lcd_device *lcd; /* LCD device we created. */44 struct ili9320_client *client;45 struct ili9320_platdata *platdata;46 47 int power; /* current power state. */48 int initialised;49 50 unsigned short display1;51 unsigned short power1;52 53 int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);54};55 56 57/* ILI9320 register access routines */58 59extern int ili9320_write(struct ili9320 *ili,60 unsigned int reg, unsigned int value);61 62extern int ili9320_write_regs(struct ili9320 *ili,63 const struct ili9320_reg *values,64 int nr_values);65 66/* Device probe */67 68extern int ili9320_probe_spi(struct spi_device *spi,69 struct ili9320_client *cli);70 71extern void ili9320_remove(struct ili9320 *lcd);72extern void ili9320_shutdown(struct ili9320 *lcd);73 74/* PM */75 76extern int ili9320_suspend(struct ili9320 *lcd);77extern int ili9320_resume(struct ili9320 *lcd);78