| /* |
| * 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. |
| */ |
| |
| #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) |
| { |
| /* column address */ |
| write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff); |
| |
| /* Row address */ |
| 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) |
| { |
| 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"); |