linux/drivers/staging/fbtft/fb_ssd1331.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio/consumer.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>

#include "fbtft.h"

#define DRVNAME …
#define WIDTH …
#define HEIGHT …
#define GAMMA_NUM …
#define GAMMA_LEN …
#define DEFAULT_GAMMA … \

static int init_display(struct fbtft_par *par)
{ … }

static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
{ … }

static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
{ … }

/*
 * Grayscale Lookup Table
 * GS1 - GS63
 * The driver Gamma curve contains the relative values between the entries
 * in the Lookup table.
 *
 * From datasheet:
 * 8.8 Gray Scale Decoder
 *
 * there are total 180 Gamma Settings (Setting 0 to Setting 180)
 * available for the Gray Scale table.
 *
 * The gray scale is defined in incremental way, with reference
 * to the length of previous table entry:
 * Setting of GS1 has to be >= 0
 * Setting of GS2 has to be > Setting of GS1 +1
 * Setting of GS3 has to be > Setting of GS2 +1
 * :
 * Setting of GS63 has to be > Setting of GS62 +1
 *
 */
static int set_gamma(struct fbtft_par *par, u32 *curves)
{ … }

static int blank(struct fbtft_par *par, bool on)
{ … }

static struct fbtft_display display = …;

FBTFT_REGISTER_DRIVER(…);

MODULE_ALIAS(…) …;
MODULE_ALIAS(…) …;
MODULE_ALIAS(…) …;
MODULE_ALIAS(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;