Release 4.18 drivers/staging/fbtft/fb_ili9481.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * FB driver for the ILI9481 LCD Controller
 *
 * Copyright (c) 2014 Petr Olivka
 * Copyright (c) 2013 Noralf Tronnes
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <video/mipi_display.h>

#include "fbtft.h"


#define DRVNAME	"fb_ili9481"

#define WIDTH		320

#define HEIGHT		480


static const s16 default_init_sequence[] = {
	/* SLP_OUT - Sleep out */
	-1, MIPI_DCS_EXIT_SLEEP_MODE,
	-2, 50,
	/* Power setting */
	-1, 0xD0, 0x07, 0x42, 0x18,
	/* VCOM */
	-1, 0xD1, 0x00, 0x07, 0x10,
	/* Power setting for norm. mode */
	-1, 0xD2, 0x01, 0x02,
	/* Panel driving setting */
	-1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11,
	/* Frame rate & inv. */
	-1, 0xC5, 0x03,
	/* Pixel format */
	-1, MIPI_DCS_SET_PIXEL_FORMAT, 0x55,
	/* Gamma */
	-1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16,
		  0x37, 0x75, 0x77, 0x54, 0x0C, 0x00,
	/* DISP_ON */
	-1, MIPI_DCS_SET_DISPLAY_ON,
	-3
};



static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
{
	write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
		  xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);

	write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
		  ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);

	write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Petazzoni
73
96.05%
1
50.00%
Priit Laes
3
3.95%
1
50.00%
Total
76
100.00%
2
100.00%


#define HFLIP 0x01

#define VFLIP 0x02

#define ROW_X_COL 0x20


static int set_var(struct fbtft_par *par)
{
	switch (par->info->var.rotate) {
	case 270:
		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
			  ROW_X_COL | HFLIP | VFLIP | (par->bgr << 3));
		break;
	case 180:
		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
			  VFLIP | (par->bgr << 3));
		break;
	case 90:
		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
			  ROW_X_COL | (par->bgr << 3));
		break;
	default:
		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
			  HFLIP | (par->bgr << 3));
		break;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Petazzoni
106
94.64%
1
33.33%
Priit Laes
4
3.57%
1
33.33%
Eva Rachel Retuya
2
1.79%
1
33.33%
Total
112
100.00%
3
100.00%


static struct fbtft_display display = {
	.regwidth = 8,
	.width = WIDTH,
	.height = HEIGHT,
	.init_sequence = default_init_sequence,
	.fbtftops = {
		.set_addr_win = set_addr_win,
		.set_var = set_var,
        },
};

FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9481", &display);

MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:ili9481");
MODULE_ALIAS("platform:ili9481");

MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller");
MODULE_AUTHOR("Petr Olivka");
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Petazzoni
425
95.51%
1
14.29%
Priit Laes
13
2.92%
1
14.29%
Eva Rachel Retuya
3
0.67%
1
14.29%
Greg Kroah-Hartman
2
0.45%
2
28.57%
Joe Perches
2
0.45%
2
28.57%
Total
445
100.00%
7
100.00%
Directory: drivers/staging/fbtft

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