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fb_hx8353d.c
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fb_hx8353d.c
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/*
* FB driver for the HX8353D 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.
*
* 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 <linux/delay.h>
#include "fbtft.h"
#define DRVNAME "fb_hx8353d"
#define DEFAULT_GAMMA "50 77 40 08 BF 00 03 0F 00 01 73 00 72 03 B0 0F 08 00 0F"
static int init_display(struct fbtft_par *par)
{
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
par->fbtftops.reset(par);
mdelay(150);
/* SETEXTC */
write_reg(par, 0xB9, 0xFF, 0x83, 0x53);
/* RADJ */
write_reg(par, 0xB0, 0x3C, 0x01);
/* VCOM */
write_reg(par, 0xB6, 0x94, 0x6C, 0x50);
/* PWR */
write_reg(par, 0xB1, 0x00, 0x01, 0x1B, 0x03, 0x01, 0x08, 0x77, 0x89);
/* COLMOD */
write_reg(par, 0x3A, 0x05);
/* MEM ACCESS */
write_reg(par, 0x36, 0xC0);
/* SLPOUT - Sleep out & booster on */
write_reg(par, 0x11);
mdelay(150);
/* DISPON - Display On */
write_reg(par, 0x29);
/* RGBSET */
write_reg(par, 0x2D,
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62);
return 0;
};
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 adress */
write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
/* memory write */
write_reg(par, 0x2c);
}
#define my (1 << 7)
#define mx (1 << 6)
#define mv (1 << 5)
static int set_var(struct fbtft_par *par)
{
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
/* madctl - memory data access control
rgb/bgr:
1. mode selection pin srgb
rgb h/w pin for color filter setting: 0=rgb, 1=bgr
2. madctl rgb bit
rgb-bgr order color filter panel: 0=rgb, 1=bgr */
switch (par->info->var.rotate) {
case 0:
write_reg(par, 0x36, mx | my | (par->bgr << 3));
break;
case 270:
write_reg(par, 0x36, my | mv | (par->bgr << 3));
break;
case 180:
write_reg(par, 0x36, (par->bgr << 3));
break;
case 90:
write_reg(par, 0x36, mx | mv | (par->bgr << 3));
break;
}
return 0;
}
/*
gamma string format:
*/
static int set_gamma(struct fbtft_par *par, unsigned long *curves)
{
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
write_reg(par, 0xE0,
curves[0], curves[1], curves[2], curves[3],
curves[4], curves[5], curves[6], curves[7],
curves[8], curves[9], curves[10], curves[11],
curves[12], curves[13], curves[14], curves[15],
curves[16], curves[17], curves[18]);
return 0;
}
static struct fbtft_display display = {
.regwidth = 8,
.width = 128,
.height = 160,
.gamma_num = 1,
.gamma_len = 19,
.gamma = DEFAULT_GAMMA,
.fbtftops = {
.init_display = init_display,
.set_addr_win = set_addr_win,
.set_var = set_var,
.set_gamma = set_gamma,
},
};
FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8353d", &display);
MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:hx8353d");
MODULE_ALIAS("platform:hx8353d");
MODULE_DESCRIPTION("FB driver for the HX8353D LCD Controller");
MODULE_AUTHOR("Petr Olivka");
MODULE_LICENSE("GPL");