Thomas Petazzoni | d416d5c | 2014-12-31 10:11:19 +0100 | [diff] [blame] | 1 | /* |
| 2 | * FB driver for the ILI9481 LCD Controller |
| 3 | * |
| 4 | * Copyright (c) 2014 Petr Olivka |
| 5 | * Copyright (c) 2013 Noralf Tronnes |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/delay.h> |
| 26 | |
| 27 | #include "fbtft.h" |
| 28 | |
| 29 | #define DRVNAME "fb_ili9481" |
| 30 | #define WIDTH 320 |
| 31 | #define HEIGHT 480 |
| 32 | |
| 33 | static int default_init_sequence[] = { |
| 34 | |
| 35 | /* SLP_OUT - Sleep out */ |
| 36 | -1, 0x11, |
| 37 | -2, 50, |
| 38 | /* Power setting */ |
| 39 | -1, 0xD0, 0x07, 0x42, 0x18, |
| 40 | /* VCOM */ |
| 41 | -1, 0xD1, 0x00, 0x07, 0x10, |
| 42 | /* Power setting for norm. mode */ |
| 43 | -1, 0xD2, 0x01, 0x02, |
| 44 | /* Panel driving setting */ |
| 45 | -1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11, |
| 46 | /* Frame rate & inv. */ |
| 47 | -1, 0xC5, 0x03, |
| 48 | /* Pixel format */ |
| 49 | -1, 0x3A, 0x55, |
| 50 | /* Gamma */ |
| 51 | -1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16, |
| 52 | 0x37, 0x75, 0x77, 0x54, 0x0C, 0x00, |
| 53 | /* DISP_ON */ |
| 54 | -1, 0x29, |
| 55 | -3 |
| 56 | }; |
| 57 | |
| 58 | static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) |
| 59 | { |
| 60 | fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, |
| 61 | "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); |
| 62 | |
| 63 | /* column address */ |
| 64 | write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff); |
| 65 | |
Masanari Iida | 92def78 | 2015-03-21 11:48:37 +0900 | [diff] [blame^] | 66 | /* Row address */ |
Thomas Petazzoni | d416d5c | 2014-12-31 10:11:19 +0100 | [diff] [blame] | 67 | write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff); |
| 68 | |
| 69 | /* memory write */ |
| 70 | write_reg(par, 0x2c); |
| 71 | } |
| 72 | |
| 73 | #define HFLIP 0x01 |
| 74 | #define VFLIP 0x02 |
| 75 | #define ROWxCOL 0x20 |
| 76 | static int set_var(struct fbtft_par *par) |
| 77 | { |
| 78 | fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); |
| 79 | |
| 80 | switch (par->info->var.rotate) { |
| 81 | case 270: |
| 82 | write_reg(par, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3)); |
| 83 | break; |
| 84 | case 180: |
| 85 | write_reg(par, 0x36, VFLIP | (par->bgr << 3)); |
| 86 | break; |
| 87 | case 90: |
| 88 | write_reg(par, 0x36, ROWxCOL | (par->bgr << 3)); |
| 89 | break; |
| 90 | default: |
| 91 | write_reg(par, 0x36, HFLIP | (par->bgr << 3)); |
| 92 | break; |
| 93 | } |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | static struct fbtft_display display = { |
| 99 | .regwidth = 8, |
| 100 | .width = WIDTH, |
| 101 | .height = HEIGHT, |
| 102 | .init_sequence = default_init_sequence, |
| 103 | .fbtftops = { |
| 104 | .set_addr_win = set_addr_win, |
| 105 | .set_var = set_var, |
| 106 | }, |
| 107 | }; |
| 108 | FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9481", &display); |
| 109 | |
| 110 | MODULE_ALIAS("spi:" DRVNAME); |
| 111 | MODULE_ALIAS("platform:" DRVNAME); |
| 112 | MODULE_ALIAS("spi:ili9481"); |
| 113 | MODULE_ALIAS("platform:ili9481"); |
| 114 | |
| 115 | MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller"); |
| 116 | MODULE_AUTHOR("Petr Olivka"); |
| 117 | MODULE_LICENSE("GPL"); |