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/*
* FB driver for the ILI9481 LCD Controller
*
* Copyright (c) 2014 Petr Olivka
* Copyright (c) 2013 Noralf Tronnes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include "fbtft.h"
#define DRVNAME "fb_ili9481"
#define WIDTH 320
#define HEIGHT 480
static int default_init_sequence[] = {
/* SLP_OUT - Sleep out */
-1, 0x11,
-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, 0x3A, 0x55,
/* Gamma */
-1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16,
0x37, 0x75, 0x77, 0x54, 0x0C, 0x00,
/* DISP_ON */
-1, 0x29,
-3
};
static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
{
fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
/* column address */
write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);
/* row adress */
write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
/* memory write */
write_reg(par, 0x2c);
}
#define HFLIP 0x01
#define VFLIP 0x02
#define ROWxCOL 0x20
static int set_var(struct fbtft_par *par)
{
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
switch (par->info->var.rotate) {
case 270:
write_reg(par, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3));
break;
case 180:
write_reg(par, 0x36, VFLIP | (par->bgr << 3));
break;
case 90:
write_reg(par, 0x36, ROWxCOL | (par->bgr << 3));
break;
default:
write_reg(par, 0x36, 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");
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