2 * FB driver for the S6D02A1 LCD Controller
4 * Based on fb_st7735r.c by Noralf Tronnes
5 * Init code from UTFT library by Henning Karlsen
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.
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.
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <video/mipi_display.h>
25 #define DRVNAME "fb_s6d02a1"
27 static const s16 default_init_sequence[] = {
33 -1, 0xfa, 0x02, 0x1f, 0x00, 0x10, 0x22, 0x30, 0x38, 0x3A, 0x3A, 0x3A, 0x3A, 0x3A, 0x3d, 0x02, 0x01,
35 -1, 0xfb, 0x21, 0x00, 0x02, 0x04, 0x07, 0x0a, 0x0b, 0x0c, 0x0c, 0x16, 0x1e, 0x30, 0x3f, 0x01, 0x02,
37 /* power setting sequence */
38 -1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x01, 0x01, 0x00, 0x1f, 0x1f,
40 -1, 0xf4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
42 -1, 0xf5, 0x00, 0x70, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x66, 0x06,
44 -1, 0xf6, 0x02, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x02, 0x00, 0x06, 0x01, 0x00,
46 -1, 0xf2, 0x00, 0x01, 0x03, 0x08, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x04, 0x08, 0x08,
50 -1, 0xf7, 0xc8, 0x20, 0x00, 0x00,
54 -1, MIPI_DCS_EXIT_SLEEP_MODE,
66 -1, 0xf4, 0x00, 0x04, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
77 -1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x00, 0x01, 0x00, 0x16, 0x16,
79 -1, 0xf4, 0x00, 0x09, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
81 /* initializing sequence */
83 -1, MIPI_DCS_SET_ADDRESS_MODE, 0x08,
85 -1, MIPI_DCS_SET_TEAR_ON, 0x00,
87 -1, MIPI_DCS_SET_PIXEL_FORMAT, 0x05,
89 /* gamma setting - possible values 0x01, 0x02, 0x04, 0x08 */
90 -1, MIPI_DCS_SET_GAMMA_CURVE, 0x01,
93 -1, MIPI_DCS_SET_DISPLAY_ON,
94 -1, MIPI_DCS_WRITE_MEMORY_START,
100 static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
102 write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
103 xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
105 write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
106 ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
108 write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
114 static int set_var(struct fbtft_par *par)
117 * Memory data access control (0x36h)
119 * 1. Mode selection pin SRGB
120 * RGB H/W pin for color filter setting: 0=RGB, 1=BGR
122 * RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR
124 switch (par->info->var.rotate) {
126 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
127 MX | MY | (par->bgr << 3));
130 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
131 MY | MV | (par->bgr << 3));
134 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
138 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
139 MX | MV | (par->bgr << 3));
146 static struct fbtft_display display = {
150 .init_sequence = default_init_sequence,
152 .set_addr_win = set_addr_win,
157 FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d02a1", &display);
159 MODULE_ALIAS("spi:" DRVNAME);
160 MODULE_ALIAS("platform:" DRVNAME);
161 MODULE_ALIAS("spi:s6d02a1");
162 MODULE_ALIAS("platform:s6d02a1");
164 MODULE_DESCRIPTION("FB driver for the S6D02A1 LCD Controller");
165 MODULE_AUTHOR("WOLFGANG BUENING");
166 MODULE_LICENSE("GPL");