projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ef8f9ab5 TP |
1 | /* |
| 2 | * Custom FB driver for tinylcd.com display | |
| 3 | * | |
| 4 | * Copyright (C) 2013 Noralf Tronnes | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 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. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/module.h> | |
| 22 | #include <linux/kernel.h> | |
| 23 | #include <linux/init.h> | |
| 24 | #include <linux/delay.h> | |
| 25 | ||
| 26 | #include "fbtft.h" | |
| 27 | ||
| 28 | #define DRVNAME "fb_tinylcd" | |
| 29 | #define WIDTH 320 | |
| 30 | #define HEIGHT 480 | |
| 31 | ||
| 32 | ||
| 33 | static int init_display(struct fbtft_par *par) | |
| 34 | { | |
| 35 | fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); | |
| 36 | ||
| 37 | par->fbtftops.reset(par); | |
| 38 | ||
| 39 | write_reg(par, 0xB0, 0x80); | |
| 40 | write_reg(par, 0xC0, 0x0A, 0x0A); | |
| 41 | write_reg(par, 0xC1, 0x45, 0x07); | |
| 42 | write_reg(par, 0xC2, 0x33); | |
| 43 | write_reg(par, 0xC5, 0x00, 0x42, 0x80); | |
| 44 | write_reg(par, 0xB1, 0xD0, 0x11); | |
| 45 | write_reg(par, 0xB4, 0x02); | |
| 46 | write_reg(par, 0xB6, 0x00, 0x22, 0x3B); | |
| 47 | write_reg(par, 0xB7, 0x07); | |
| 48 | write_reg(par, 0x36, 0x58); | |
| 49 | write_reg(par, 0xF0, 0x36, 0xA5, 0xD3); | |
| 50 | write_reg(par, 0xE5, 0x80); | |
| 51 | write_reg(par, 0xE5, 0x01); | |
| 52 | write_reg(par, 0xB3, 0x00); | |
| 53 | write_reg(par, 0xE5, 0x00); | |
| 54 | write_reg(par, 0xF0, 0x36, 0xA5, 0x53); | |
| 55 | write_reg(par, 0xE0, 0x00, 0x35, 0x33, 0x00, 0x00, 0x00, | |
| c26c5e73 | 56 | 0x00, 0x35, 0x33, 0x00, 0x00, 0x00); |
| ef8f9ab5 TP |
57 | write_reg(par, 0x3A, 0x55); |
| 58 | write_reg(par, 0x11); | |
| 59 | udelay(250); | |
| 60 | write_reg(par, 0x29); | |
| 61 | ||
| 62 | return 0; | |
| 63 | } | |
| 64 | ||
| 65 | static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) | |
| 66 | { | |
| 67 | fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, | |
| 68 | "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); | |
| 69 | ||
| 70 | /* Column address */ | |
| 71 | write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF); | |
| 72 | ||
| 92def781 | 73 | /* Row address */ |
| ef8f9ab5 TP |
74 | write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF); |
| 75 | ||
| 76 | /* Memory write */ | |
| 77 | write_reg(par, 0x2C); | |
| 78 | } | |
| 79 | ||
| 80 | static int set_var(struct fbtft_par *par) | |
| 81 | { | |
| 82 | fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); | |
| 83 | ||
| 84 | switch (par->info->var.rotate) { | |
| 85 | case 270: | |
| 86 | write_reg(par, 0xB6, 0x00, 0x02, 0x3B); | |
| 87 | write_reg(par, 0x36, 0x28); | |
| 88 | break; | |
| 89 | case 180: | |
| 90 | write_reg(par, 0xB6, 0x00, 0x22, 0x3B); | |
| 91 | write_reg(par, 0x36, 0x58); | |
| 92 | break; | |
| 93 | case 90: | |
| 94 | write_reg(par, 0xB6, 0x00, 0x22, 0x3B); | |
| 95 | write_reg(par, 0x36, 0x38); | |
| 96 | break; | |
| 97 | default: | |
| 98 | write_reg(par, 0xB6, 0x00, 0x22, 0x3B); | |
| 99 | write_reg(par, 0x36, 0x08); | |
| 100 | break; | |
| 101 | } | |
| 102 | ||
| 103 | return 0; | |
| 104 | } | |
| 105 | ||
| 106 | ||
| 107 | static struct fbtft_display display = { | |
| 108 | .regwidth = 8, | |
| 109 | .width = WIDTH, | |
| 110 | .height = HEIGHT, | |
| 111 | .fbtftops = { | |
| 112 | .init_display = init_display, | |
| 113 | .set_addr_win = set_addr_win, | |
| 114 | .set_var = set_var, | |
| 115 | }, | |
| 116 | }; | |
| 117 | FBTFT_REGISTER_DRIVER(DRVNAME, "neosec,tinylcd", &display); | |
| 118 | ||
| 119 | MODULE_ALIAS("spi:" DRVNAME); | |
| 120 | MODULE_ALIAS("spi:tinylcd"); | |
| 121 | ||
| 122 | MODULE_DESCRIPTION("Custom FB driver for tinylcd.com display"); | |
| 123 | MODULE_AUTHOR("Noralf Tronnes"); | |
| 124 | MODULE_LICENSE("GPL"); |