| /* |
| * 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 address */ |
| 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"); |