mirror of
https://github.com/FEX-Emu/linux.git
synced 2025-01-13 12:53:27 +00:00
staging: fbtft: add fb_bd663474 driver
This commit adds the fb_bd663474 driver from the fbtft project at https://github.com/notro/fbtft. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Noralf Tronnes <notro@tronnes.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Petazzoni
Greg Kroah-Hartman
parent
b2ebd4be6f
commit
959d049f00
@ -13,3 +13,9 @@ config FB_TFT_AGM1264K_FL
|
||||
depends on FB_TFT
|
||||
help
|
||||
Framebuffer support for the AGM1264K-FL LCD display (two Samsung KS0108 compatable chips)
|
||||
|
||||
config FB_TFT_BD663474
|
||||
tristate "FB driver for the BD663474 LCD Controller"
|
||||
depends on FB_TFT
|
||||
help
|
||||
Generic Framebuffer support for BD663474
|
||||
|
||||
@ -4,3 +4,4 @@ fbtft-y += fbtft-core.o fbtft-sysfs.o fbtft-bus.o fbtft
|
||||
|
||||
# drivers
|
||||
obj-$(CONFIG_FB_TFT_AGM1264K_FL) += fb_agm1264k-fl.o
|
||||
obj-$(CONFIG_FB_TFT_BD663474) += fb_bd663474.o
|
||||
|
||||
193
drivers/staging/fbtft/fb_bd663474.c
Normal file
193
drivers/staging/fbtft/fb_bd663474.c
Normal file
@ -0,0 +1,193 @@
|
||||
/*
|
||||
* FB driver for the uPD161704 LCD Controller
|
||||
*
|
||||
* Copyright (C) 2014 Seong-Woo Kim
|
||||
*
|
||||
* Based on fb_ili9325.c by Noralf Tronnes
|
||||
* Based on ili9325.c by Jeroen Domburg
|
||||
* Init code from UTFT library by Henning Karlsen
|
||||
*
|
||||
* 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/gpio.h>
|
||||
#include <linux/delay.h>
|
||||
|
||||
#include "fbtft.h"
|
||||
|
||||
#define DRVNAME "fb_bd663474"
|
||||
#define WIDTH 240
|
||||
#define HEIGHT 320
|
||||
#define BPP 16
|
||||
|
||||
static int init_display(struct fbtft_par *par)
|
||||
{
|
||||
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
|
||||
|
||||
if (par->gpio.cs != -1)
|
||||
gpio_set_value(par->gpio.cs, 0); /* Activate chip */
|
||||
|
||||
par->fbtftops.reset(par);
|
||||
|
||||
/* Initialization sequence from Lib_UTFT */
|
||||
|
||||
/* oscillator start */
|
||||
write_reg(par, 0x000,0x0001); /*oscillator 0: stop, 1: operation */
|
||||
mdelay(10);
|
||||
|
||||
/* Power settings */
|
||||
write_reg(par, 0x100, 0x0000 ); /* power supply setup */
|
||||
write_reg(par, 0x101, 0x0000 );
|
||||
write_reg(par, 0x102, 0x3110 );
|
||||
write_reg(par, 0x103, 0xe200 );
|
||||
write_reg(par, 0x110, 0x009d );
|
||||
write_reg(par, 0x111, 0x0022 );
|
||||
write_reg(par, 0x100, 0x0120 );
|
||||
mdelay( 20 );
|
||||
|
||||
write_reg(par, 0x100, 0x3120 );
|
||||
mdelay( 80 );
|
||||
/* Display control */
|
||||
write_reg(par, 0x001, 0x0100 );
|
||||
write_reg(par, 0x002, 0x0000 );
|
||||
write_reg(par, 0x003, 0x1230 );
|
||||
write_reg(par, 0x006, 0x0000 );
|
||||
write_reg(par, 0x007, 0x0101 );
|
||||
write_reg(par, 0x008, 0x0808 );
|
||||
write_reg(par, 0x009, 0x0000 );
|
||||
write_reg(par, 0x00b, 0x0000 );
|
||||
write_reg(par, 0x00c, 0x0000 );
|
||||
write_reg(par, 0x00d, 0x0018 );
|
||||
/* LTPS control settings */
|
||||
write_reg(par, 0x012, 0x0000 );
|
||||
write_reg(par, 0x013, 0x0000 );
|
||||
write_reg(par, 0x018, 0x0000 );
|
||||
write_reg(par, 0x019, 0x0000 );
|
||||
|
||||
write_reg(par, 0x203, 0x0000 );
|
||||
write_reg(par, 0x204, 0x0000 );
|
||||
|
||||
write_reg(par, 0x210, 0x0000 );
|
||||
write_reg(par, 0x211, 0x00ef );
|
||||
write_reg(par, 0x212, 0x0000 );
|
||||
write_reg(par, 0x213, 0x013f );
|
||||
write_reg(par, 0x214, 0x0000 );
|
||||
write_reg(par, 0x215, 0x0000 );
|
||||
write_reg(par, 0x216, 0x0000 );
|
||||
write_reg(par, 0x217, 0x0000 );
|
||||
|
||||
/* Gray scale settings */
|
||||
write_reg(par, 0x300, 0x5343);
|
||||
write_reg(par, 0x301, 0x1021);
|
||||
write_reg(par, 0x302, 0x0003);
|
||||
write_reg(par, 0x303, 0x0011);
|
||||
write_reg(par, 0x304, 0x050a);
|
||||
write_reg(par, 0x305, 0x4342);
|
||||
write_reg(par, 0x306, 0x1100);
|
||||
write_reg(par, 0x307, 0x0003);
|
||||
write_reg(par, 0x308, 0x1201);
|
||||
write_reg(par, 0x309, 0x050a);
|
||||
|
||||
/* RAM access settings */
|
||||
write_reg(par, 0x400, 0x4027 );
|
||||
write_reg(par, 0x401, 0x0000 );
|
||||
write_reg(par, 0x402, 0x0000 ); /* First screen drive position (1) */
|
||||
write_reg(par, 0x403, 0x013f ); /* First screen drive position (2) */
|
||||
write_reg(par, 0x404, 0x0000 );
|
||||
|
||||
write_reg(par, 0x200, 0x0000 );
|
||||
write_reg(par, 0x201, 0x0000 );
|
||||
write_reg(par, 0x100, 0x7120 );
|
||||
write_reg(par, 0x007, 0x0103 );
|
||||
mdelay( 10 );
|
||||
write_reg(par, 0x007, 0x0113 );
|
||||
|
||||
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);
|
||||
switch (par->info->var.rotate) {
|
||||
/* R200h = Horizontal GRAM Start Address */
|
||||
/* R201h = Vertical GRAM Start Address */
|
||||
case 0:
|
||||
write_reg(par, 0x0200, xs);
|
||||
write_reg(par, 0x0201, ys);
|
||||
break;
|
||||
case 180:
|
||||
write_reg(par, 0x0200, WIDTH - 1 - xs);
|
||||
write_reg(par, 0x0201, HEIGHT - 1 - ys);
|
||||
break;
|
||||
case 270:
|
||||
write_reg(par, 0x0200, WIDTH - 1 - ys);
|
||||
write_reg(par, 0x0201, xs);
|
||||
break;
|
||||
case 90:
|
||||
write_reg(par, 0x0200, ys);
|
||||
write_reg(par, 0x0201, HEIGHT - 1 - xs);
|
||||
break;
|
||||
}
|
||||
write_reg(par, 0x202); /* Write Data to GRAM */
|
||||
}
|
||||
|
||||
static int set_var(struct fbtft_par *par)
|
||||
{
|
||||
fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
|
||||
|
||||
switch (par->info->var.rotate) {
|
||||
/* AM: GRAM update direction */
|
||||
case 0:
|
||||
write_reg(par, 0x003, 0x1230);
|
||||
break;
|
||||
case 180:
|
||||
write_reg(par, 0x003, 0x1200);
|
||||
break;
|
||||
case 270:
|
||||
write_reg(par, 0x003, 0x1228);
|
||||
break;
|
||||
case 90:
|
||||
write_reg(par, 0x003, 0x1218);
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct fbtft_display display = {
|
||||
.regwidth = 16,
|
||||
.width = WIDTH,
|
||||
.height = HEIGHT,
|
||||
.bpp = BPP,
|
||||
.fbtftops = {
|
||||
.init_display = init_display,
|
||||
.set_addr_win = set_addr_win,
|
||||
.set_var = set_var,
|
||||
},
|
||||
};
|
||||
FBTFT_REGISTER_DRIVER(DRVNAME, "hitachi,bd663474", &display);
|
||||
|
||||
MODULE_ALIAS("spi:" DRVNAME);
|
||||
MODULE_ALIAS("platform:" DRVNAME);
|
||||
MODULE_ALIAS("spi:bd663474");
|
||||
MODULE_ALIAS("platform:bd663474");
|
||||
|
||||
MODULE_DESCRIPTION("FB driver for the uPD161704 LCD Controller");
|
||||
MODULE_AUTHOR("Seong-Woo Kim");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
x
Reference in New Issue
Block a user