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/*
* FB driver for the ILI9486 LCD Controller
*
* Copyright (C) 2014 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 "fbtft.h"
#define DRVNAME "fb_ili9486"
#define WIDTH 320
#define HEIGHT 480
/* this init sequence matches PiScreen */
static int default_init_sequence[] = {
/* Interface Mode Control */
-1, 0xb0, 0x0,
/* Sleep OUT */
-1, 0x11,
-2, 250,
/* Interface Pixel Format */
-1, 0x3A, 0x55,
/* Power Control 3 */
-1, 0xC2, 0x44,
/* VCOM Control 1 */
-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
/* PGAMCTRL(Positive Gamma Control) */
-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
/* NGAMCTRL(Negative Gamma Control) */
-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
/* Digital Gamma Control 1 */
-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
/* Sleep OUT */
-1, 0x11,
/* Display ON */
-1, 0x29,
/* end marker */
-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);
}
static int set_var(struct fbtft_par *par)
{
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
switch (par->info->var.rotate) {
case 0:
write_reg(par, 0x36, 0x80 | (par->bgr << 3));
break;
case 90:
write_reg(par, 0x36, 0x20 | (par->bgr << 3));
break;
case 180:
write_reg(par, 0x36, 0x40 | (par->bgr << 3));
break;
case 270:
write_reg(par, 0x36, 0xE0 | (par->bgr << 3));
break;
default:
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,ili9486", &display);
MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:ili9486");
MODULE_ALIAS("platform:ili9486");
MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
MODULE_AUTHOR("Noralf Tronnes");
MODULE_LICENSE("GPL");
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