2 * FB driver for the ILI9486 LCD Controller
4 * Copyright (C) 2014 Noralf Tronnes
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/init.h>
27 #define DRVNAME "fb_ili9486"
32 /* this init sequence matches PiScreen */
33 static int default_init_sequence[] = {
34 /* Interface Mode Control */
39 /* Interface Pixel Format */
44 -1, 0xC5, 0x00, 0x00, 0x00, 0x00,
45 /* PGAMCTRL(Positive Gamma Control) */
46 -1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
47 0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
48 /* NGAMCTRL(Negative Gamma Control) */
49 -1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
50 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
51 /* Digital Gamma Control 1 */
52 -1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
53 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
62 static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
64 fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
65 "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
68 write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
71 write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
77 static int set_var(struct fbtft_par *par)
79 fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
81 switch (par->info->var.rotate) {
83 write_reg(par, 0x36, 0x80 | (par->bgr << 3));
86 write_reg(par, 0x36, 0x20 | (par->bgr << 3));
89 write_reg(par, 0x36, 0x40 | (par->bgr << 3));
92 write_reg(par, 0x36, 0xE0 | (par->bgr << 3));
102 static struct fbtft_display display = {
106 .init_sequence = default_init_sequence,
108 .set_addr_win = set_addr_win,
112 FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
114 MODULE_ALIAS("spi:" DRVNAME);
115 MODULE_ALIAS("platform:" DRVNAME);
116 MODULE_ALIAS("spi:ili9486");
117 MODULE_ALIAS("platform:ili9486");
119 MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
120 MODULE_AUTHOR("Noralf Tronnes");
121 MODULE_LICENSE("GPL");