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/* $Id: drv_Sample.c 840 2007-09-09 12:17:42Z michael $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_Sample.c $
*
* ST2205U-driven hacked picture frame driver.
* See http://picframe.spritesserver.nl/ for more info.
*
* Copyright (C) 2008 Jeroen Domburg <picframe@spritesmods.com>
* Modified from sample code by:
* Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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, or (at your option)
* any later version.
*
* LCD4Linux 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.
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_st2205
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <st2205.h>
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "udelay.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "drv.h"
#include "drv_generic_graphic.h"
static char Name[] = "st2205";
/* libst2205 handle */
static st2205_handle *h;
/* Display data */
static unsigned char *fb;
static int drv_st2205_open(const char *section)
{
char *dev;
dev = cfg_get(section, "Port", NULL);
if (dev == NULL || *dev == '\0') {
error("st2205: no '%s.Port' entry from %s", section, cfg_source());
return -1;
}
h = st2205_open(dev);
if (h == NULL)
return -1;
return 0;
}
static int drv_st2205_close(void)
{
st2205_close(h);
return 0;
}
static void drv_st2205_blit(const int row, const int col, const int height, const int width)
{
int r, c;
RGBA p;
for (r = row; r < row + height; r++) {
for (c = col; c < col + width; c++) {
p = drv_generic_graphic_rgb(r, c);
fb[(r * h->width + c) * 3 + 0] = p.R;
fb[(r * h->width + c) * 3 + 1] = p.G;
fb[(r * h->width + c) * 3 + 2] = p.B;
}
}
st2205_send_data(h, fb);
}
/* start graphic display */
static int drv_st2205_start2(const char *section)
{
char *s;
s = cfg_get(section, "Font", "6x8");
if (s == NULL || *s == '\0') {
error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
return -1;
}
XRES = -1;
YRES = -1;
if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
error("%s: bad Font '%s' from %s", Name, s, cfg_source());
return -1;
}
/* Fixme: provider other fonts someday... */
if (XRES != 6 && YRES != 8) {
error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
return -1;
}
/* open communication with the display */
if (drv_st2205_open(section) < 0) {
return -1;
}
/* you surely want to allocate a framebuffer or something... */
fb = malloc(h->height * h->width * 3);
/* set width/height from st2205 firmware specs */
DROWS = h->width;
DCOLS = h->height;
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
static void plugin_backlight(RESULT * result, RESULT * arg1)
{
int bl_on;
bl_on = (R2N(arg1) == 0 ? 0 : 1);
st2205_backlight(h, bl_on);
SetResult(&result, R_NUMBER, &bl_on);
}
/****************************************/
/*** widget callbacks ***/
/****************************************/
/* using drv_generic_text_draw(W) */
/* using drv_generic_text_icon_draw(W) */
/* using drv_generic_text_bar_draw(W) */
/* using drv_generic_gpio_draw(W) */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_st2205_list(void)
{
printf("generic");
return 0;
}
/* initialize driver & display */
int drv_st2205_init2(const char *section, const int quiet)
{
int ret;
/* real worker functions */
drv_generic_graphic_real_blit = drv_st2205_blit;
/* start display */
if ((ret = drv_st2205_start2(section)) != 0)
return ret;
/* initialize generic graphic driver */
if ((ret = drv_generic_graphic_init(section, Name)) != 0)
return ret;
if (!quiet) {
char buffer[40];
qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
if (drv_generic_graphic_greet(buffer, NULL)) {
sleep(3);
drv_generic_graphic_clear();
}
}
/* register plugins */
AddFunction("LCD::backlight", 1, plugin_backlight);
return 0;
}
/* close driver & display */
int drv_st2205_quit2(const int quiet)
{
info("%s: shutting down.", Name);
/* clear display */
drv_generic_graphic_clear();
/* say goodbye... */
if (!quiet) {
drv_generic_graphic_greet("goodbye!", NULL);
}
drv_generic_graphic_quit();
debug("closing connection");
drv_st2205_close();
return (0);
}
DRIVER drv_st2205 = {
.name = Name,
.list = drv_st2205_list,
.init = drv_st2205_init2,
.quit = drv_st2205_quit2,
};
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