// 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);
|
}
|
|
#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;
|
}
|
|
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");
|
