diff options
Diffstat (limited to 'drv_st2205.c')
| -rw-r--r-- | drv_st2205.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drv_st2205.c b/drv_st2205.c new file mode 100644 index 0000000..fbc6da1 --- /dev/null +++ b/drv_st2205.c @@ -0,0 +1,247 @@ +/* $Id: drv_st2205.c 980 2009-01-28 21:18:52Z michux $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_st2205.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) { + error("st2205: cannot open st2205 device %s", dev); + 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 hacked photo frame"); + 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, +}; |