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-rw-r--r--drv_st2205.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/drv_st2205.c b/drv_st2205.c
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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,
+};