LXR linux/drivers/video/backlight/ili9320.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/* drivers/video/backlight/ili9320.h
   3 *
   4 * ILI9320 LCD controller driver core.
   5 *
   6 * Copyright 2007 Simtec Electronics
   7 *      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