+++ /dev/null
-Index: linux-2.6.30.9/arch/arm/Kconfig
-===================================================================
---- linux-2.6.30.9.orig/arch/arm/Kconfig 2009-10-05 17:38:08.000000000 +0200
-+++ linux-2.6.30.9/arch/arm/Kconfig 2009-11-24 02:01:42.000000000 +0100
-@@ -1407,6 +1407,8 @@
-
- source "drivers/accessibility/Kconfig"
-
-+source "drivers/lcd-linux/Kconfig"
-+
- source "drivers/leds/Kconfig"
-
- source "drivers/rtc/Kconfig"
-Index: linux-2.6.30.9/drivers/Makefile
-===================================================================
---- linux-2.6.30.9.orig/drivers/Makefile 2009-10-05 17:38:08.000000000 +0200
-+++ linux-2.6.30.9/drivers/Makefile 2009-11-24 02:01:42.000000000 +0100
-@@ -106,4 +106,5 @@
- obj-$(CONFIG_SSB) += ssb/
- obj-$(CONFIG_VIRTIO) += virtio/
- obj-$(CONFIG_STAGING) += staging/
-+obj-$(CONFIG_LCD_LINUX) += lcd-linux/
- obj-y += platform/
-Index: linux-2.6.30.9/drivers/lcd-linux/Config.in
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/Config.in 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,8 @@
-+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+ mainmenu_option next_comment
-+ comment 'LCD support'
-+
-+ tristate 'LCD-Linux layer' CONFIG_LCD_LINUX
-+ dep_tristate ' HD44780 controller' CONFIG_LCD_HD44780 $CONFIG_LCD_LINUX
-+ endmenu
-+fi
-Index: linux-2.6.30.9/drivers/lcd-linux/Kconfig
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/Kconfig 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,33 @@
-+menu "LCD-Linux support"
-+ depends on EXPERIMENTAL
-+
-+config LCD_LINUX
-+ tristate "LCD-Linux layer"
-+ default m
-+ help
-+ LCD-Linux provides an easy way to drive LCD displays under
-+ Linux by creating a character which can be read or written.
-+ It features complete VT102 emulation and recognizes
-+ many escape sequences. If you want to use it you must also
-+ choose an appropriate driver, otherwise it will not be
-+ very useful. For more information see
-+ http://lcd-linux.sourceforge.net/
-+
-+ To compile LCD-Linux as a module, choose M here:
-+ the module will be called lcd-linux.
-+
-+config LCD_HD44780
-+ tristate "HD44780 controller"
-+ depends on LCD_LINUX && MACH_SIM_ONE
-+ default m
-+ help
-+ This is a LCD-Linux driver for LCD displays based on the
-+ Hitachi HD44780 (and compatible) controllers connected
-+ to the SimOne LCD port.
-+
-+ To compile this driver as a module, choose M here:
-+ the module will be called hd44780.
-+
-+ If unsure, say N.
-+
-+endmenu
-Index: linux-2.6.30.9/drivers/lcd-linux/Makefile
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/Makefile 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,8 @@
-+#
-+#
-+# Standard Makefile to statically compile LCD-Linux into the kernel
-+# Linux 2.6
-+
-+obj-$(CONFIG_LCD_LINUX) += lcd-linux.o
-+obj-$(CONFIG_LCD_HD44780) += hd44780.o
-+
-Index: linux-2.6.30.9/drivers/lcd-linux/cgram/default.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/cgram/default.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,37 @@
-+/* default.h
-+ *
-+ *
-+ *
-+ * Default user defined characters for lcdmod.
-+ *
-+ * Copyright (C) by Michael McLellan (mikey@cs.auckland.ac.nz)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ *
-+ */
-+
-+static void init_charmap(void)
-+{
-+}
-+
-+static unsigned char cg0[] = { 0x1f, 0x1f, 0x11, 0x0f, 0x11, 0x1e, 0x01, 0x1f };
-+static unsigned char cg1[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f };
-+static unsigned char cg2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x1f };
-+static unsigned char cg3[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x1f, 0x1f };
-+static unsigned char cg4[] = { 0x00, 0x00, 0x00, 0x00, 0x1f, 0x1f, 0x1f, 0x1f };
-+static unsigned char cg5[] = { 0x00, 0x00, 0x00, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f };
-+static unsigned char cg6[] = { 0x00, 0x00, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f };
-+static unsigned char cg7[] = { 0x00, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f };
-Index: linux-2.6.30.9/drivers/lcd-linux/charmap.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/charmap.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,79 @@
-+/* charmap.h
-+ *
-+ *
-+ *
-+ * Character mapping for HD44780 devices by Mark Haemmerling <mail@markh.de>.
-+ *
-+ * Translates ISO 8859-1 to HD44780 charset.
-+ * HD44780 charset reference: http://markh.de/hd44780-charset.png
-+ *
-+ * Initial table taken from lcd.o Linux kernel driver by
-+ * Nils Faerber <nilsf@users.sourceforge.net>. Thanks!
-+ *
-+ * This file is released under the GNU General Public License. Refer to the
-+ * COPYING file distributed with this package.
-+ *
-+ * Following translations are being performed:
-+ * - maps umlaut accent characters to the corresponding umlaut characters
-+ * - maps other accent characters to the characters without accents
-+ * - maps beta (=ringel-S), micro and Yen
-+ *
-+ * Alternative mappings:
-+ * - #112 ("p") -> #240 (large "p"), orig. mapped -> #112
-+ * - #113 ("q") -> #241 (large "q"), orig. mapped -> #113
-+ *
-+ * HD44780 misses backslash
-+ *
-+ */
-+
-+static unsigned char charmap[] = {
-+
-+/* 0 - 31 */
-+ 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 - 63 */
-+ 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,
-+
-+/* 64 - 95 */
-+ 64, 65, 66, 67, 68, 69, 70, 71,
-+ 72, 73, 74, 75, 76, 77, 78, 79,
-+ 80, 81, 82, 83, 84, 85, 86, 87,
-+ 88, 89, 90, 91, 47, 93, 94, 95,
-+
-+/* 96 - 127 */
-+ 96, 97, 98, 99, 100, 101, 102, 103,
-+104, 105, 106, 107, 108, 109, 110, 111,
-+112, 113, 114, 115, 116, 117, 118, 119,
-+120, 121, 122, 123, 124, 125, 126, 127,
-+
-+/* 128 - 159 */
-+128, 129, 130, 131, 132, 133, 134, 135,
-+136, 137, 138, 139, 140, 141, 142, 143,
-+144, 145, 146, 147, 148, 149, 150, 151,
-+152, 153, 154, 155, 156, 157, 158, 159,
-+
-+/* 160 - 191 */
-+160, 33, 236, 237, 164, 92, 124, 167,
-+ 34, 169, 170, 171, 172, 173, 174, 175,
-+223, 177, 178, 179, 39, 249, 247, 165,
-+ 44, 185, 186, 187, 188, 189, 190, 63,
-+
-+/* 192 - 223 */
-+ 65, 65, 65, 65, 225, 65, 65, 67,
-+ 69, 69, 69, 69, 73, 73, 73, 73,
-+ 68, 78, 79, 79, 79, 79, 239, 120,
-+ 48, 85, 85, 85, 245, 89, 240, 226,
-+
-+/* 224 - 255 */
-+ 97, 97, 97, 97, 225, 97, 97, 99,
-+101, 101, 101, 101, 105, 105, 105, 105,
-+111, 110, 111, 111, 111, 111, 239, 253,
-+ 48, 117, 117, 117, 245, 121, 240, 255
-+
-+};
-Index: linux-2.6.30.9/drivers/lcd-linux/commands.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/commands.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,77 @@
-+/* commands.h
-+ *
-+ *
-+ *
-+ * LCD-Linux:
-+ * Driver for HD44780 compatible displays connected to the parallel port.
-+ *
-+ * HD44780 commands.
-+ *
-+ * Copyright (C) 2004 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ */
-+
-+#ifndef HD44780_COMMANDS_H
-+#define HD44780_COMMANDS_H
-+
-+/*** HD44780 Command Set ***/
-+
-+/* Clear Display*/
-+#define CLR_DISP 0x01 /* Clear entire display; cursor at row 0, column 0 */
-+
-+/* Return Home */
-+#define RET_HOME 0x02 /* Cursor at row 0, column 0; display content doesn't change */
-+
-+/* Entry Mode Set */
-+#define ENTRY_MODE_SET 0x04
-+#define DISP_SHIFT_ON (ENTRY_MODE_SET | 0x01) /* Shift display, not cursor after data write */
-+#define DISP_SHIFT_OFF (ENTRY_MODE_SET | 0x00) /* Shift cursor, not display after data write */
-+#define CURS_INC (ENTRY_MODE_SET | 0x02) /* Shift on the right after data read/write */
-+#define CURS_DEC (ENTRY_MODE_SET | 0x00) /* Shift on the left after data read/write */
-+
-+/* Display on/off Control */
-+#define DISP_ONOFF_CNTR 0x08
-+#define BLINK_ON (DISP_ONOFF_CNTR | 0x01) /* Cursor blinking on */
-+#define BLINK_OFF (DISP_ONOFF_CNTR | 0x00) /* Cursor blinking off */
-+#define CURS_ON (DISP_ONOFF_CNTR | 0x02) /* Display Cursor */
-+#define CURS_OFF (DISP_ONOFF_CNTR | 0x00) /* Hide Cursor */
-+#define DISP_ON (DISP_ONOFF_CNTR | 0x04) /* Turn on display updating */
-+#define DISP_OFF (DISP_ONOFF_CNTR | 0x00) /* Freeze display content */
-+
-+/* Cursor or Display Shift */
-+#define CURS_DISP_SHIFT 0x10
-+#define SHIFT_RIGHT (CURS_DISP_SHIFT | 0x04) /* Shift on the right */
-+#define SHIFT_LEFT (CURS_DISP_SHIFT | 0x00) /* Shift on the left */
-+#define SHIFT_DISP (CURS_DISP_SHIFT | 0x08) /* Shift display */
-+#define SHIFT_CURS (CURS_DISP_SHIFT | 0x00) /* Shift cursor */
-+
-+/* Function Set */
-+#define FUNC_SET 0x20
-+#define FONT_5X10 (FUNC_SET | 0x04) /* Select 5x10 dots font */
-+#define FONT_5X8 (FUNC_SET | 0x00) /* Select 5x8 dots font */
-+#define DISP_2_LINES (FUNC_SET | 0x08) /* Select 2 lines display (only 5x8 font allowed) */
-+#define DISP_1_LINE (FUNC_SET | 0x00) /* Select 1 line display */
-+#define BUS_8_BITS (FUNC_SET | 0x10) /* Set 8 data bits */
-+#define BUS_4_BITS (FUNC_SET | 0x00) /* Set 4 data bits */
-+
-+/* Set CGRAM Address */
-+#define CGRAM_IO 0x40 /* Base CGRAM address */
-+
-+/* Set DDRAM Address */
-+#define DDRAM_IO 0x80 /* Base DDRAM address */
-+
-+#endif /* commands included */
-Index: linux-2.6.30.9/drivers/lcd-linux/config.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/config.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,73 @@
-+/* config.h
-+ *
-+ *
-+ *
-+ * Configure file for LCD-Linux. Here you must specify your hardware setup and
-+ * timings constants. The default values will probably be right for you.
-+ *
-+ * Copyright (C) 2005 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ *
-+ */
-+
-+/* Setup the default user defined characters in CGRAM */
-+#include "cgram/default.h"
-+
-+/* Don't modify the default timing constants
-+ * unless you know what you are doing.
-+ */
-+
-+/* Execution times (in microseconds) */
-+#define T_READ 60 /* Read execution time (min 43 us) */
-+#define T_WRITE 60 /* Write execution time (min 43 us) */
-+#define T_BF 2 /* Busy flag polling time (min 1 us) */
-+
-+/* Timings in nanoseconds */
-+#define T_AS 200 /* Address set-up time (min 140 ns) */
-+#define T_EH 500 /* Enable high time (min 450 ns) */
-+#define T_EL 600 /* Enable low time (min 500 ns) */
-+
-+/* Various constants */
-+#define DFLT_NUM_CNTR 1 /* Default number of controllers the display has */
-+#define DFLT_CNTR_ROWS 2 /* Default number of rows per controller */
-+#define DFLT_CNTR_COLS 16 /* Default number of columns the display has */
-+#define DFLT_VS_ROWS 25 /* Default number of rows for the virtual screen */
-+#define DFLT_VS_COLS 80 /* Default number of columns for the virtual screen */
-+#define DFLT_TABSTOP 3 /* Default length of tabs */
-+#define DFLT_FLAGS (HD44780_CHECK_BF | HD44780_4BITS_BUS ) /* Default flags */
-+
-+#define MAX_CNTR_ROWS 4 /* The HD44780 supports up to 4 lines as a fake 2 lines mode */
-+#define MAX_CNTR_COLS 80 /* The HD44780 supports up to 80 characters (1*80; 2*40; etc) */
-+
-+#define SETUP 4
-+#define HIGH_NIBBLE_WRITE(x) (((x) >> (4-SETUP)) & (0x0f << SETUP))
-+#define LOW_NIBBLE_WRITE(x) (((x) << SETUP) & (0x0f << SETUP))
-+#define HIGH_NIBBLE_READ(x) (((x) & (0x0f << SETUP)) << (4-SETUP))
-+#define LOW_NIBBLE_READ(x) (((x) & (0x0f << SETUP)) >> SETUP)
-+
-+
-+#define SIMONE_LCD_RS EP93XX_GPIO_LINE_A(2) /* OUT */
-+#define SIMONE_LCD_RD EP93XX_GPIO_LINE_A(3) /* OUT */
-+#define SIMONE_LCD_EN EP93XX_GPIO_LINE_B(4) /* EGPIO12 OUT */
-+#define SIMONE_LCD_BCKLIGHT EP93XX_GPIO_LINE_B(5) /* EGPIO13 OUT */
-+
-+#define SIMONE_LCD_DATA0 EP93XX_GPIO_LINE_A(4)
-+#define SIMONE_LCD_DATA1 EP93XX_GPIO_LINE_A(5)
-+#define SIMONE_LCD_DATA2 EP93XX_GPIO_LINE_A(6)
-+#define SIMONE_LCD_DATA3 EP93XX_GPIO_LINE_A(7)
-+
-+
-Index: linux-2.6.30.9/drivers/lcd-linux/hd44780.c
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/hd44780.c 2009-11-24 02:05:29.000000000 +0100
-@@ -0,0 +1,860 @@
-+/* hd44780.c
-+ *
-+ *
-+ *
-+ * LCD-Linux:
-+ * Driver for HD44780 compatible displays connected to the parallel port.
-+ *
-+ * Copyright (C) 2005 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ * Adapted to Sim.One Hardware by Nuccio Raciti (raciti.nuccio@gmail.com)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ */
-+
-+
-+#include <linux/autoconf.h>
-+
-+
-+#ifdef CONFIG_PROC_FS
-+#define USE_PROC
-+#else
-+#undef USE_PROC
-+#endif
-+
-+#include <linux/bitops.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+
-+#include <linux/delay.h>
-+#include <linux/fs.h>
-+
-+#include <asm/uaccess.h>
-+#include <linux/init.h>
-+
-+#include <asm/io.h>
-+#include <linux/ioport.h>
-+#include <asm/gpio.h>
-+
-+#ifdef USE_PROC
-+#include <linux/proc_fs.h>
-+#endif
-+
-+#define LCD_LINUX_MAIN
-+#include <linux/hd44780.h>
-+
-+#include "charmap.h"
-+#include "commands.h"
-+#include "config.h"
-+
-+/** Function prototypes **/
-+static void read_display(unsigned char *byte, unsigned char bitmask);
-+static void write_display(unsigned char byte, unsigned char bitmask);
-+
-+/* Initialization */
-+static int hd44780_validate_driver(void);
-+static int hd44780_init_port(void);
-+static int hd44780_cleanup_port(void);
-+static int hd44780_init_display(void);
-+static int hd44780_cleanup_display(void);
-+
-+/* Write */
-+static void hd44780_address_mode(int);
-+static void hd44780_clear_display(void);
-+static void hd44780_write_char(unsigned int, unsigned short);
-+static void hd44780_write_cgram_char(unsigned char, unsigned char *);
-+
-+/* Read */
-+static void check_bf(unsigned char);
-+static void hd44780_read_char(unsigned int, unsigned short *);
-+static void hd44780_read_cgram_char(unsigned char, unsigned char *);
-+
-+/* Input handling */
-+static int hd44780_handle_custom_char(unsigned int);
-+static int hd44780_handle_custom_ioctl(unsigned int,unsigned long , unsigned int);
-+
-+/* Proc operations */
-+#ifdef USE_PROC
-+static void create_proc_entries(void);
-+static void remove_proc_entries(void);
-+#endif
-+
-+/* hd44780 access */
-+#define ACCESS_TO_READ 0
-+#define ACCESS_TO_WRITE 1
-+#define ACCESS_TO_DATA 2
-+
-+/* hd44780_flags */
-+#define _CHECK_BF 0 /* Do busy-flag checking */
-+#define _4BITS_BUS 1 /* The bus is 4 bits long */
-+#define _5X10_FONT 2 /* Use 5x10 font */
-+#define CURSOR_BLINK 3 /* Make the cursor blinking */
-+#define SHOW_CURSOR 4 /* Make the cursor visible */
-+#define DISPLAY_ON 5 /* Display status: on or off */
-+#define INC_ADDR 6 /* Increment address after data read/write */
-+#define BACKLIGHT 7 /* Display backlight: on or off */
-+#define CGRAM_STATE 9 /* Controller status bitmask (bits 9->15): DDRAM or CGRAM access */
-+#define ESC_MASK 0x00ff0000
-+#define PROC_MASK 0x0f000000
-+
-+#define SET_STATE(state, mask) (hd44780_flags = (hd44780_flags & ~(mask)) | ((state) & (mask)))
-+#define SET_ESC_STATE(state) SET_STATE((state) << 16, ESC_MASK)
-+#define SET_PROC_LEVEL(level) SET_STATE((level) << 24, PROC_MASK)
-+#define ESC_STATE ((hd44780_flags & ESC_MASK) >> 16)
-+#define PROC_LEVEL ((hd44780_flags & PROC_MASK) >> 24)
-+
-+/* globals */
-+static unsigned int disp_size; /* Display size (rows*columns) */
-+static unsigned int disp_offset[1]; /* Physical cursor position on the display */
-+static unsigned long hd44780_flags; /* Driver flags for internal use only */
-+
-+static struct lcd_parameters par = {
-+ .name = HD44780_STRING,
-+ .minor = HD44780_MINOR,
-+ .flags = DFLT_FLAGS,
-+ .tabstop = DFLT_TABSTOP,
-+ .num_cntr = 1,
-+ .cntr_rows = DFLT_CNTR_ROWS,
-+ .cntr_cols = DFLT_CNTR_COLS,
-+ .vs_rows = DFLT_VS_ROWS,
-+ .vs_cols = DFLT_VS_COLS,
-+ .cgram_chars = 8,
-+ .cgram_bytes = 8,
-+ .cgram_char0 = 0,
-+};
-+/* End of globals */
-+
-+#ifdef MODULE
-+#include <linux/device.h>
-+MODULE_ALIAS_CHARDEV(LCD_MAJOR, HD44780_MINOR);
-+#include <linux/kmod.h>
-+
-+static unsigned short flags = DFLT_FLAGS;
-+static unsigned short tabstop = DFLT_TABSTOP;
-+static unsigned short cntr_rows = DFLT_CNTR_ROWS;
-+static unsigned short cntr_cols = DFLT_CNTR_COLS;
-+static unsigned short vs_rows = DFLT_VS_ROWS;
-+static unsigned short vs_cols = DFLT_VS_COLS;
-+static unsigned short minor = HD44780_MINOR;
-+
-+MODULE_DESCRIPTION("LCD SimOne driver for HD44780 compatible controllers.");
-+MODULE_AUTHOR("Nuccio Raciti (raciti.nuccio@gmail.com)");
-+#ifdef MODULE_LICENSE
-+MODULE_LICENSE("GPL");
-+#endif
-+module_param(flags, ushort, 0444);
-+module_param(cntr_rows, ushort, 0444);
-+module_param(cntr_cols, ushort, 0444);
-+module_param(vs_rows, ushort, 0444);
-+module_param(vs_cols, ushort, 0444);
-+module_param(tabstop, ushort, 0444);
-+module_param(minor, ushort, 0444);
-+
-+MODULE_PARM_DESC(flags, "Various flags (see Documentation)");
-+MODULE_PARM_DESC(cntr_rows, "Number of rows per controller on the LCD: 1, 2, 4 (default: " string(DFLT_CNTR_ROWS) ")");
-+MODULE_PARM_DESC(cntr_cols, "Number of columns on the LCD (default: " string(DFLT_CNTR_COLS) ", max: " string(MAX_CNTR_COLS) ")");
-+MODULE_PARM_DESC(vs_rows, "Number of rows of the virtual screen (default: " string(DFLT_VS_ROWS) ")");
-+MODULE_PARM_DESC(vs_cols, "Number of columns of the virtual screen (default: " string(DFLT_VS_COLS) ")");
-+MODULE_PARM_DESC(tabstop, "Tab character length (default: " string(DFLT_TABSTOP) ")");
-+MODULE_PARM_DESC(minor, "Assigned minor number (default: " string(HD44780_MINOR) ")");
-+#else
-+
-+/*
-+ * Parse boot command line
-+ *
-+ * hd44780=cntr_rows,cntr_cols,vs_rows,vs_cols,flags,minor,tabstop
-+ */
-+static int __init hd44780_boot_init(char *cmdline)
-+{
-+ char *str = cmdline;
-+ int idx = 0;
-+ unsigned short *args[] = {
-+ &par.cntr_rows,
-+ &par.cntr_cols,
-+ &par.vs_rows,
-+ &par.vs_cols,
-+ &par.flags,
-+ &par.num_cntr,
-+ &par.minor,
-+ &par.tabstop,
-+ };
-+
-+ while (*cmdline && idx < (sizeof(args)/sizeof(unsigned short *))) {
-+ switch (*str) {
-+ case ',':
-+ *str++ = 0;
-+ case 0:
-+ if (strlen(cmdline))
-+ *args[idx] = simple_strtoul(cmdline, NULL, 0);
-+ ++idx;
-+ cmdline = str;
-+ break;
-+ default:
-+ ++str;
-+ break;
-+ }
-+ }
-+
-+ return (1);
-+}
-+
-+__setup("hd44780=", hd44780_boot_init);
-+#endif /* MODULE */
-+
-+/* Macros for iterator handling */
-+static inline unsigned int iterator_inc_(unsigned int iterator, const unsigned int module)
-+{
-+ return ((++iterator)%module);
-+}
-+
-+static inline unsigned int iterator_dec_(unsigned int iterator, const unsigned int module)
-+{
-+ return (iterator ? --iterator : module-1);
-+}
-+
-+#define iterator_inc(iterator, module) (iterator = iterator_inc_(iterator, module))
-+#define iterator_dec(iterator, module) (iterator = iterator_dec_(iterator, module))
-+
-+static inline void set_lines(unsigned char bitmask)
-+{
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+
-+ if(bitmask & ACCESS_TO_WRITE ) {
-+ gpio_direction_output (SIMONE_LCD_DATA0 , 0);
-+ gpio_direction_output (SIMONE_LCD_DATA1 , 0);
-+ gpio_direction_output (SIMONE_LCD_DATA2 , 0);
-+ gpio_direction_output (SIMONE_LCD_DATA3 , 0);
-+ gpio_set_value(SIMONE_LCD_RD, 0); /* Write */
-+ } else {
-+
-+ gpio_direction_input (SIMONE_LCD_DATA0);
-+ gpio_direction_input (SIMONE_LCD_DATA1);
-+ gpio_direction_input (SIMONE_LCD_DATA2);
-+ gpio_direction_input (SIMONE_LCD_DATA3);
-+ gpio_set_value(SIMONE_LCD_RD, 1); /* Read */
-+ }
-+
-+ if(bitmask & ACCESS_TO_DATA )
-+ gpio_set_value(SIMONE_LCD_RS, 1); /* Data */
-+ else
-+ gpio_set_value(SIMONE_LCD_RS, 0); /* Cmds*/
-+
-+ if(test_bit(BACKLIGHT, &hd44780_flags))
-+ gpio_set_value(SIMONE_LCD_BCKLIGHT, 1);
-+ else
-+ gpio_set_value(SIMONE_LCD_BCKLIGHT, 0);
-+}
-+
-+
-+/* Low level read from the display */
-+static inline unsigned char __read_display(unsigned char bitmask)
-+{
-+ unsigned char byte;
-+
-+ set_lines (bitmask);
-+
-+ ndelay(T_AS); /* Address set-up time */
-+ gpio_set_value(SIMONE_LCD_EN, 1); /* Enable */
-+ ndelay(T_EH);/* Enable high time */
-+
-+ byte = (gpio_get_value(SIMONE_LCD_DATA0) << 4);
-+ byte |= (gpio_get_value(SIMONE_LCD_DATA1) << 5);
-+ byte |= (gpio_get_value(SIMONE_LCD_DATA2) << 6);
-+ byte |= (gpio_get_value(SIMONE_LCD_DATA3) << 7);
-+
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+
-+ ndelay(T_EL); /* Enable low time */
-+
-+
-+ return (byte);
-+
-+}
-+
-+/* Low level write to the display */
-+static inline void __write_display(unsigned char data, unsigned char bitmask)
-+{
-+ set_lines(bitmask);
-+
-+ if(data & 0x10)
-+ gpio_set_value(SIMONE_LCD_DATA0, 1);
-+ else
-+ gpio_set_value(SIMONE_LCD_DATA0, 0);
-+
-+ if(data & 0x20)
-+ gpio_set_value(SIMONE_LCD_DATA1, 1);
-+ else
-+ gpio_set_value(SIMONE_LCD_DATA1, 0);
-+
-+ if(data & 0x40)
-+ gpio_set_value(SIMONE_LCD_DATA2, 1);
-+ else
-+ gpio_set_value(SIMONE_LCD_DATA2, 0);
-+
-+ if(data & 0x80)
-+ gpio_set_value(SIMONE_LCD_DATA3, 1);
-+ else
-+ gpio_set_value(SIMONE_LCD_DATA3, 0);
-+
-+ ndelay(T_AS); /* Address set-up time */
-+ gpio_set_value(SIMONE_LCD_EN, 1);
-+ ndelay(T_EH); /* Enable high time */
-+
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+ ndelay(T_EL); /* Enable low time */
-+}
-+
-+
-+/* Read data from the display (4 bit bus, check busy flag) */
-+static void read_display (unsigned char *byte,unsigned char bitmask)
-+{
-+ if(bitmask) check_bf(bitmask);
-+ *byte = HIGH_NIBBLE_READ(__read_display(bitmask));
-+ if(bitmask) check_bf(bitmask);
-+ *byte |= LOW_NIBBLE_READ(__read_display(bitmask));
-+}
-+
-+
-+/* Output commands or data to the display (4 bit bus, check busy flag) */
-+static void write_display(unsigned char byte,unsigned char bitmask)
-+{
-+ check_bf(bitmask);
-+ __write_display(HIGH_NIBBLE_WRITE(byte),bitmask);
-+ check_bf(bitmask);
-+ __write_display(LOW_NIBBLE_WRITE(byte),bitmask);
-+}
-+
-+
-+/* Read Address Counter AC from the display */
-+static unsigned char read_ac(unsigned char bitmask)
-+{
-+ unsigned char byte;
-+
-+ read_display(&byte, bitmask);
-+
-+ return (byte);
-+}
-+
-+
-+/* Do busy-flag check */
-+static void check_bf(unsigned char bitmask)
-+{
-+ unsigned int timeout = 20;
-+ static unsigned char do_check_bf = 5;
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+
-+ gpio_direction_input (SIMONE_LCD_DATA0);
-+ gpio_direction_input (SIMONE_LCD_DATA1);
-+ gpio_direction_input (SIMONE_LCD_DATA2);
-+ gpio_direction_input (SIMONE_LCD_DATA3);
-+
-+ gpio_set_value(SIMONE_LCD_RD, 1); /* Read */
-+ gpio_set_value(SIMONE_LCD_RS, 0); /* Instru */
-+
-+ ndelay(T_AS); /* Address set-up time */
-+ gpio_set_value(SIMONE_LCD_EN, 1); /* Enable */
-+ ndelay(T_EH);/* Enable high time */
-+
-+ do{
-+ udelay(T_BF);
-+ } while (gpio_get_value(SIMONE_LCD_DATA3) && --timeout);
-+
-+ if (! timeout) {
-+ if (! --do_check_bf) {
-+ printk(KERN_NOTICE "hd44780 error: is the LCD connected?\n");
-+ }
-+ }
-+
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+
-+ ndelay(T_EL); /* Enable low time */
-+}
-+
-+/* Send commands to the display */
-+static void write_command(unsigned char command)
-+{
-+ write_display(command, ACCESS_TO_WRITE);
-+
-+ if (command <= 0x03)
-+ mdelay(2);
-+}
-+
-+static inline void set_cursor(unsigned int offset)
-+{
-+ unsigned int disp_number = offset/disp_size;
-+ unsigned int local_offset = offset%disp_size;
-+
-+ if (disp_offset[disp_number] != local_offset || test_bit(CGRAM_STATE+disp_number, &hd44780_flags)) {
-+ unsigned int disp_row = local_offset/par.cntr_cols;
-+ unsigned int disp_column = local_offset%par.cntr_cols;
-+
-+ write_command(DDRAM_IO | ((disp_row%2)*0x40) | (((disp_row >= 2)*par.cntr_cols)+disp_column));
-+ clear_bit(CGRAM_STATE+disp_number, &hd44780_flags);
-+ disp_offset[disp_number] = local_offset;
-+ }
-+}
-+
-+/* HD44780 DDRAM addresses are consecutive only when
-+ * the cursor moves on the same row of the display.
-+ * Every time the row of the cursor changes we invalidate
-+ * the cursor position to force hardware cursor repositioning.
-+ */
-+static inline void mov_cursor(unsigned int disp_number)
-+{
-+ if (test_bit(INC_ADDR, &hd44780_flags)) {
-+ iterator_inc(disp_offset[disp_number], disp_size);
-+ if (disp_offset[disp_number]%par.cntr_cols == 0)
-+ disp_offset[disp_number] = disp_size;
-+ } else {
-+ iterator_dec(disp_offset[disp_number], disp_size);
-+ if (disp_offset[disp_number]%par.cntr_cols == par.cntr_cols-1)
-+ disp_offset[disp_number] = disp_size;
-+ }
-+}
-+
-+static struct lcd_driver hd44780 = {
-+ .read_char = hd44780_read_char,
-+ .read_cgram_char = hd44780_read_cgram_char,
-+ .write_char = hd44780_write_char,
-+ .write_cgram_char = hd44780_write_cgram_char,
-+ .address_mode = hd44780_address_mode,
-+ .clear_display = hd44780_clear_display,
-+ .validate_driver = hd44780_validate_driver,
-+ .init_display = hd44780_init_display,
-+ .cleanup_display = hd44780_cleanup_display,
-+ .init_port = hd44780_init_port,
-+ .cleanup_port = hd44780_cleanup_port,
-+ .handle_custom_char = hd44780_handle_custom_char,
-+ .handle_custom_ioctl = hd44780_handle_custom_ioctl,
-+
-+ .charmap = charmap,
-+};
-+
-+static void hd44780_read_char(unsigned int offset, unsigned short *data)
-+{
-+ unsigned int disp_number = offset/disp_size;
-+ unsigned char tmp;
-+
-+ set_cursor(offset);
-+ read_display(&tmp, ACCESS_TO_DATA);
-+ *data = tmp;
-+ mov_cursor(disp_number);
-+}
-+
-+static void hd44780_read_cgram_char(unsigned char index, unsigned char *pixels)
-+{
-+ unsigned int i;
-+
-+ write_command(CGRAM_IO | (index << 3));
-+ set_bit(CGRAM_STATE+0, &hd44780_flags);
-+
-+ for (i = 0; i < 8; ++i) {
-+ read_display(pixels+i, ACCESS_TO_DATA );
-+ pixels[i] &= 0x1f;
-+ }
-+}
-+
-+static void hd44780_write_char(unsigned int offset, unsigned short data)
-+{
-+ unsigned int disp_number = offset/disp_size;
-+
-+ set_cursor(offset);
-+ write_display(data & 0xff, ACCESS_TO_WRITE | ACCESS_TO_DATA );
-+ mov_cursor(disp_number);
-+}
-+
-+static void hd44780_write_cgram_char(unsigned char index, unsigned char *pixels)
-+{
-+ unsigned int i;
-+
-+ /* Move address pointer to index in CGRAM */
-+ write_command(CGRAM_IO | (index << 3));
-+
-+ set_bit(CGRAM_STATE+0, &hd44780_flags);
-+
-+ for (i = 0; i < 8; ++i) {
-+ pixels[i] &= 0x1f;
-+ write_display(pixels[i], ACCESS_TO_WRITE | ACCESS_TO_DATA );
-+ }
-+}
-+
-+/* Increment/decrement address mode after a data read/write */
-+static void hd44780_address_mode(int mode)
-+{
-+ if (mode > 0 && ! test_bit(INC_ADDR, &hd44780_flags)) {
-+ write_command(CURS_INC | DISP_SHIFT_OFF);
-+ set_bit(INC_ADDR, &hd44780_flags);
-+ } else if (mode < 0 && test_bit(INC_ADDR, &hd44780_flags)) {
-+ write_command(CURS_DEC | DISP_SHIFT_OFF);
-+ clear_bit(INC_ADDR, &hd44780_flags);
-+ }
-+}
-+
-+static void hd44780_clear_display(void)
-+{
-+ write_command(CLR_DISP);
-+ if (! test_bit(INC_ADDR, &hd44780_flags))
-+ write_command(CURS_DEC | DISP_SHIFT_OFF);
-+ memset(disp_offset, 0, sizeof(disp_offset));
-+}
-+
-+static int hd44780_validate_driver(void)
-+{
-+ if (par.cntr_rows != 1 && par.cntr_rows != 2 && par.cntr_rows != 4)
-+ par.cntr_rows = DFLT_CNTR_ROWS;
-+
-+ if (par.cntr_rows != 1)
-+ par.flags &= ~HD44780_5X10_FONT;
-+
-+
-+ if (! par.cntr_cols || par.cntr_cols > MAX_CNTR_COLS/par.cntr_rows)
-+ par.cntr_cols = MAX_CNTR_COLS/par.cntr_rows;
-+
-+ disp_size = par.cntr_rows*par.cntr_cols;
-+
-+ /* These parameters depend on the hardware and cannot be changed */
-+ par.cgram_chars = 8;
-+ par.cgram_bytes = 8;
-+ par.cgram_char0 = 0;
-+
-+ return (0);
-+}
-+
-+/* Send init commands to the display */
-+static void write_init_command(void)
-+{
-+ unsigned char command = 0x30;
-+
-+ __write_display(HIGH_NIBBLE_WRITE(command), ACCESS_TO_WRITE);
-+ mdelay(20); /* Wait more than 4.1 ms */
-+ __write_display(HIGH_NIBBLE_WRITE(command), ACCESS_TO_WRITE);
-+ udelay(200); /* Wait more than 100 us */
-+ __write_display(HIGH_NIBBLE_WRITE(command), ACCESS_TO_WRITE);
-+ udelay(200); /* Wait more than 100 us */
-+ command = BUS_4_BITS;
-+ command |= ((par.cntr_rows == 1) ? DISP_1_LINE : DISP_2_LINES);
-+ command |= (test_bit(_5X10_FONT, &hd44780_flags) ? FONT_5X10 : FONT_5X8);
-+ write_command(command);
-+ /* set_bit(BACKLIGHT, &hd44780_flags); */
-+}
-+
-+static int hd44780_init_display(void)
-+{
-+ if (par.flags & HD44780_CHECK_BF)
-+ set_bit(_CHECK_BF, &hd44780_flags);
-+ else
-+ clear_bit(_CHECK_BF, &hd44780_flags);
-+
-+ if (par.flags & HD44780_4BITS_BUS)
-+ set_bit(_4BITS_BUS, &hd44780_flags);
-+ else
-+ clear_bit(_4BITS_BUS, &hd44780_flags);
-+
-+ if (par.flags & HD44780_5X10_FONT)
-+ set_bit(_5X10_FONT, &hd44780_flags);
-+ else
-+ clear_bit(_5X10_FONT, &hd44780_flags);
-+
-+ write_init_command();
-+
-+ hd44780_clear_display();
-+ hd44780_address_mode(1);
-+ write_command(DISP_ON | CURS_OFF | BLINK_OFF);
-+ set_bit(DISPLAY_ON, &hd44780_flags);
-+ clear_bit(SHOW_CURSOR, &hd44780_flags);
-+ clear_bit(CURSOR_BLINK, &hd44780_flags);
-+
-+ /* Set the CGRAM to default values */
-+ hd44780_write_cgram_char(0, cg0);
-+ hd44780_write_cgram_char(1, cg1);
-+ hd44780_write_cgram_char(2, cg2);
-+ hd44780_write_cgram_char(3, cg3);
-+ hd44780_write_cgram_char(4, cg4);
-+ hd44780_write_cgram_char(5, cg5);
-+ hd44780_write_cgram_char(6, cg6);
-+ hd44780_write_cgram_char(7, cg7);
-+ init_charmap();
-+
-+ return (0);
-+}
-+
-+static int hd44780_cleanup_display(void)
-+{
-+ hd44780_clear_display();
-+
-+ return (0);
-+}
-+
-+static int hd44780_init_port(void)
-+{
-+ gpio_direction_output (SIMONE_LCD_BCKLIGHT, 0);
-+ gpio_direction_output (SIMONE_LCD_RD , 0);
-+ gpio_direction_output (SIMONE_LCD_RS , 0);
-+ gpio_direction_output (SIMONE_LCD_EN , 0);
-+ gpio_set_value(SIMONE_LCD_EN, 0); /* Disable */
-+
-+ return (0);
-+}
-+
-+static int hd44780_cleanup_port(void)
-+{
-+
-+ gpio_direction_input (SIMONE_LCD_BCKLIGHT);
-+ gpio_direction_input (SIMONE_LCD_RD);
-+ gpio_direction_input (SIMONE_LCD_RS);
-+ gpio_direction_input (SIMONE_LCD_EN);
-+ gpio_direction_input (SIMONE_LCD_DATA0);
-+ gpio_direction_input (SIMONE_LCD_DATA1);
-+ gpio_direction_input (SIMONE_LCD_DATA2);
-+ gpio_direction_input (SIMONE_LCD_DATA3);
-+ return (0);
-+}
-+
-+static void display_attr(unsigned char input)
-+{
-+ unsigned char command;
-+
-+ switch (ESC_STATE) {
-+ case 'a': /* Turn on/off the display cursor */
-+ if (input == '1')
-+ set_bit(SHOW_CURSOR, &hd44780_flags);
-+ else if (input == '0')
-+ clear_bit(SHOW_CURSOR, &hd44780_flags);
-+ break;
-+ case 'b': /* Turn on/off the display cursor blinking */
-+ if (input == '1')
-+ set_bit(CURSOR_BLINK, &hd44780_flags);
-+ else if (input == '0')
-+ clear_bit(CURSOR_BLINK, &hd44780_flags);
-+ break;
-+ case 'h': /* Turn on/off the display */
-+ if (input == '1')
-+ set_bit(DISPLAY_ON, &hd44780_flags);
-+ else if (input == '0')
-+ clear_bit(DISPLAY_ON, &hd44780_flags);
-+ break;
-+ }
-+
-+ command = (test_bit(DISPLAY_ON, &hd44780_flags) ? DISP_ON : DISP_OFF);
-+ command |= (test_bit(SHOW_CURSOR, &hd44780_flags) ? CURS_ON : CURS_OFF);
-+ command |= (test_bit(CURSOR_BLINK, &hd44780_flags) ? BLINK_ON : BLINK_OFF);
-+
-+ if (ESC_STATE == 'h')
-+ write_command(command);
-+}
-+
-+static int hd44780_handle_custom_char(unsigned int _input)
-+{
-+ unsigned char input = _input & 0xff;
-+
-+ if (_input & (~0xff)) {
-+ switch (ESC_STATE) {
-+ case 'a': /* Turn on/off the display cursor */
-+ case 'b': /* Turn on/off the display cursor blinking */
-+ case 'h': /* Turn on/off the the display */
-+ display_attr(input);
-+ return (0);
-+ case 'l': /* Turn on/off the backlight */
-+ if (input == '1')
-+ set_bit(BACKLIGHT, &hd44780_flags);
-+ else if (input == '0')
-+ clear_bit(BACKLIGHT, &hd44780_flags);
-+ read_ac(ACCESS_TO_READ);
-+ return (0);
-+ }
-+ }
-+
-+ switch (input) {
-+ case 'a': /* Turn on/off the display cursor */
-+ case 'b': /* Turn on/off the display cursor blinking */
-+ case 'h': /* Turn on/off the display */
-+ case 'l': /* Turn on/off the backlight */
-+ SET_ESC_STATE(input);
-+ return (1);
-+ case 'd': /* Shift display cursor Right */
-+ write_command(SHIFT_CURS | SHIFT_RIGHT);
-+ return (0);
-+ case 'e': /* Shift display cursor Left */
-+ write_command(SHIFT_CURS | SHIFT_LEFT);
-+ return (0);
-+ case 'f': /* Shift display Right */
-+ write_command(SHIFT_DISP | SHIFT_RIGHT);
-+ return (0);
-+ case 'g': /* Shift display Left */
-+ write_command(SHIFT_DISP | SHIFT_LEFT);
-+ return (0);
-+ }
-+
-+ return (-1);
-+}
-+
-+static int hd44780_handle_custom_ioctl(unsigned int num, unsigned long arg, unsigned int user_space)
-+{
-+ unsigned char *buffer = (unsigned char *)arg;
-+
-+ if (num != HD44780_READ_AC)
-+ return (-ENOIOCTLCMD);
-+
-+ if (user_space)
-+ put_user(read_ac(ACCESS_TO_READ), buffer);
-+ else
-+ buffer[0] = read_ac(ACCESS_TO_READ);
-+
-+ return (0);
-+}
-+
-+#ifdef USE_PROC
-+static int hd44780_proc_status(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+
-+ /* Print display configuration */
-+ temp += sprintf(temp,
-+ "Interface:\t%u bits\n"
-+ "Display rows:\t%d\n"
-+ "Display cols:\t%d\n"
-+ "Screen rows:\t%d\n"
-+ "Screen cols:\t%d\n"
-+ "Read:\t\t%sabled\n"
-+ "Busy flag chk:\t%sabled\n"
-+ "Assigned minor:\t%u\n",
-+ (test_bit(_4BITS_BUS, &hd44780_flags) ? 4 : 8),
-+ par.cntr_rows, par.cntr_cols,
-+ par.vs_rows, par.vs_cols,
-+ (hd44780.read_char ? "En" : "Dis"),
-+ (test_bit(_CHECK_BF, &hd44780_flags) ? "En" : "Dis"),
-+ par.minor);
-+
-+ return (temp-buffer);
-+}
-+
-+static int hd44780_proc_cgram(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+ unsigned int i;
-+
-+ temp += sprintf(temp, "static void init_charmap(void)\n{\n"
-+ "\t/*\n"
-+ "\t * charmap[char mapped to cg0] = 0;\n"
-+ "\t * charmap[char mapped to cg1] = 1;\n"
-+ "\t * charmap[char mapped to cg2] = 2;\n"
-+ "\t * charmap[char mapped to cg3] = 3;\n"
-+ "\t * charmap[char mapped to cg4] = 4;\n"
-+ "\t * charmap[char mapped to cg5] = 5;\n"
-+ "\t * charmap[char mapped to cg6] = 6;\n"
-+ "\t * charmap[char mapped to cg7] = 7;\n"
-+ "\t */\n"
-+ "}\n\n");
-+
-+ for (i = 0; i < 8; ++i) {
-+ unsigned char cgram_buffer[8];
-+ unsigned int j;
-+
-+ temp += sprintf(temp, "static unsigned char cg%u[] = { ", i);
-+ hd44780_read_cgram_char(i, cgram_buffer);
-+ for (j = 0; j < 8; ++j)
-+ temp += sprintf(temp, "0x%.2x%s", cgram_buffer[j], (j == 7 ? " };\n" : ", "));
-+ }
-+
-+ return (temp-buffer);
-+}
-+
-+static void create_proc_entries(void)
-+{
-+ int count = 0;
-+
-+ SET_PROC_LEVEL(count);
-+ if (create_proc_read_entry("status", 0, hd44780.driver_proc_root, hd44780_proc_status, NULL) == NULL) {
-+ printk(KERN_ERR "hd44780: cannot create /proc/lcd/%s/status\n", par.name);
-+ return;
-+ }
-+ SET_PROC_LEVEL(++count);
-+ if (hd44780.read_cgram_char) {
-+ if (create_proc_read_entry("cgram.h", 0, hd44780.driver_proc_root, hd44780_proc_cgram, NULL) == NULL) {
-+ printk(KERN_ERR "hd44780: cannot create /proc/lcd/%s/cgram.h\n", par.name);
-+ return;
-+ }
-+ SET_PROC_LEVEL(++count);
-+ }
-+}
-+
-+static void remove_proc_entries(void)
-+{
-+ switch (PROC_LEVEL) {
-+ case 2:
-+ remove_proc_entry("cgram.h", hd44780.driver_proc_root);
-+ case 1:
-+ remove_proc_entry("status", hd44780.driver_proc_root);
-+ }
-+ SET_PROC_LEVEL(0);
-+}
-+#endif
-+
-+/* Initialization */
-+static int __init hd44780_init_module(void)
-+{
-+ int ret;
-+
-+#ifdef MODULE
-+#ifdef NOT_DEF
-+ if ((ret = request_module("lcd-linux"))) {
-+ if (ret != -ENOSYS) {
-+ printk(KERN_ERR "hd44780: failure while loading module lcd-linux\n");
-+ return (ret);
-+ }
-+ printk(KERN_ERR "hd44780: your kernel does not have kmod or kerneld support;\n");
-+ printk(KERN_ERR "hd44780: remember to load the lcd-linux module before\n");
-+ printk(KERN_ERR "hd44780: loading the hd44780 module\n");
-+ }
-+#endif
-+ if (flags != DFLT_FLAGS) par.flags = flags;
-+ if (tabstop != DFLT_TABSTOP) par.tabstop = tabstop;
-+ if (cntr_rows != DFLT_CNTR_ROWS) par.cntr_rows = cntr_rows;
-+ if (cntr_cols != DFLT_CNTR_COLS) par.cntr_cols = cntr_cols;
-+ if (vs_rows != DFLT_VS_ROWS) par.vs_rows = vs_rows;
-+ if (vs_cols != DFLT_VS_COLS) par.vs_cols = vs_cols;
-+ if (minor != HD44780_MINOR) par.minor = minor;
-+#endif
-+
-+ lcd_driver_setup(&hd44780);
-+ if ((ret = lcd_register_driver(&hd44780, &par)))
-+ return (ret);
-+
-+#ifdef USE_PROC
-+ if (hd44780.driver_proc_root)
-+ create_proc_entries();
-+#endif
-+
-+ printk(KERN_INFO "HD44780 driver (LCD-Linux" HD44780_VERSION ")\n");
-+ printk(KERN_INFO "Nuccio Raciti <raciti.nuccio@gmail.com>\n");
-+
-+
-+ return (0);
-+}
-+
-+/* Cleanup */
-+
-+static void __exit hd44780_cleanup_module(void)
-+{
-+#ifdef USE_PROC
-+ if (hd44780.driver_proc_root)
-+ remove_proc_entries();
-+#endif
-+
-+ lcd_unregister_driver(&hd44780, &par);
-+}
-+
-+module_init(hd44780_init_module)
-+module_exit(hd44780_cleanup_module)
-Index: linux-2.6.30.9/drivers/lcd-linux/lcd-linux.c
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/lcd-linux/lcd-linux.c 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,2892 @@
-+/* lcd-linux.c
-+ *
-+ *
-+ *
-+ * Software layer to drive LCD displays under Linux.
-+ *
-+ * Copyright (C) 2005 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ */
-+
-+#include <linux/version.h>
-+
-+#ifndef KERNEL_VERSION
-+#define KERNEL_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
-+#endif
-+
-+#ifndef LINUX_VERSION_CODE
-+#error - LINUX_VERSION_CODE undefined in 'linux/version.h'
-+#endif
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+#include <linux/autoconf.h>
-+#else
-+#include <linux/config.h>
-+#endif
-+#ifdef CONFIG_PROC_FS
-+#define USE_PROC
-+#else
-+#undef USE_PROC
-+#endif
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
-+#include <linux/semaphore.h>
-+#else
-+#include <asm/semaphore.h>
-+#endif
-+#include <linux/bitops.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/sched.h>
-+
-+#include <linux/fs.h>
-+
-+#include <asm/uaccess.h>
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+#include <linux/device.h>
-+#endif
-+#include <linux/init.h>
-+#include <linux/list.h>
-+#include <linux/slab.h>
-+#include <linux/selection.h>
-+#include <linux/vmalloc.h>
-+
-+#ifdef USE_PROC
-+#include <linux/proc_fs.h>
-+#endif
-+
-+#define LCD_LINUX_MAIN
-+#include <linux/lcd-linux.h>
-+
-+/*** struct_flags ***/
-+#define NEED_WRAP 0 /* Next char will trigger a newline */
-+#define DECIM 1 /* Insert mode */
-+#define DECAWM 2 /* Autowrap */
-+#define DECSCNM 3 /* Inverted screen */
-+#define CRLF 4 /* Follow lf, vt, ff, with a cr */
-+#define INC_CURS_POS 5 /* Increment cursor position after data read/write */
-+#define QUES 6 /* CSI Esc sequence contains a question mark */
-+#define USER_SPACE 7 /* If set, the buffer pointed by arg in do_lcd_ioctl() is
-+ * assumed to be in user space otherwise it is in kernel space */
-+#define NULL_CHARMAP 8 /* The driver doesn't provide a charmap so the
-+ * lcd-linux layer provides one*/
-+#define CAN_DO_COLOR 9 /* The display is color capable */
-+#define WITH_ATTR 10 /* If set, the void * buffer in do_lcd_read/write() contains
-+ * attributes and therefore is an unsigned short * otherwise it
-+ * is an unsigned char *
-+ */
-+
-+/*** attributes ***/
-+#define I_MASK 0x03 /* Intensity (0 = low, 1 = normal, 2 = bright) */
-+#define ULINE 0x04 /* Underlined text */
-+#define REVERSE 0x08 /* Reversed video text */
-+#define BLINK 0x80 /* Blinking text */
-+
-+/*** Color attributes ***/
-+#define FG_MASK 0x0f /* Foreground color */
-+#define BG_MASK 0xf0 /* Background color */
-+
-+/* input states */
-+#define NORMAL 0x00001000 /* Normal mode */
-+#define RAW 0x00002000 /* Raw mode (console emulation disabled) */
-+#define SYN 0x00003000 /* Synchronous Idle mode */
-+#define ESC 0x00004000 /* Escape mode */
-+#define CSI 0x00005000 /* CSI escape mode */
-+#define ESC_G0 0x00006000 /* G0 character set */
-+#define ESC_G1 0x00007000 /* G1 character set */
-+#define ESC_HASH 0x00008000 /* ESC # escape sequence */
-+#define ESC_PERCENT 0x00009000 /* ESC % escape sequence */
-+#define ARG 0x0000a000 /* Waiting for arguments for the lcd-linux layer */
-+#define ARG_DRIVER 0x0000b000 /* Waiting for arguments for the display driver */
-+#define INPUT_MASK 0x0000f000
-+#define ESC_MASK 0x00ff0000
-+#define INIT_MASK 0x0f000000
-+#define PROC_MASK 0xf0000000
-+
-+#define SET_STATE(p, state, mask) ((p)->struct_flags = ((p)->struct_flags & ~(mask)) | ((state) & (mask)))
-+#define SET_INPUT_STATE(p, state) SET_STATE(p, state, INPUT_MASK)
-+#define SET_ESC_STATE(p, state) SET_STATE(p, (state) << 16, ESC_MASK)
-+#define SET_INIT_LEVEL(p, level) SET_STATE(p, (level) << 24, INIT_MASK)
-+#define SET_PROC_LEVEL(p, level) SET_STATE(p, (level) << 28, PROC_MASK)
-+#define INPUT_STATE(p) ((p)->struct_flags & INPUT_MASK)
-+#define ESC_STATE(p) (((p)->struct_flags & ESC_MASK) >> 16)
-+#define INIT_LEVEL(p) (((p)->struct_flags & INIT_MASK) >> 24)
-+#define PROC_LEVEL(p) (((p)->struct_flags & PROC_MASK) >> 28)
-+
-+#define NPAR 16 /* Max number of parameters in CSI escape sequence */
-+#define FLIP_BUF_SIZE (1 << 6) /* Flip buffer size (64 bytes) */
-+
-+struct lcd_struct {
-+ struct list_head lcd_list; /* Doubly linked list */
-+ struct semaphore lcd_sem; /* Locks this structure */
-+ struct lcd_driver *driver; /* The driver associated to this struct */
-+ struct lcd_parameters *par; /* The parameters associated to this struct */
-+ unsigned long struct_flags; /* Flags for internal use only */
-+ unsigned int refcount; /* Number of references to this struct */
-+
-+ unsigned short *display; /* The display buffer */
-+
-+ unsigned short *fb; /* The virtual screen framebuffer */
-+ unsigned int fb_size; /* Size of the framebuffer */
-+ unsigned int frame_base; /* Offset of row 0, column 0 of a frame in fb */
-+ unsigned int frame_size; /* Size of the frame */
-+
-+ unsigned int row; /* Current row in virtual screen */
-+ unsigned int col; /* Current column in virtual screen */
-+ unsigned int s_offset; /* Saved cursor position in virtual screen */
-+
-+ unsigned int top; /* Top scroll row in virtual screen */
-+ unsigned int bot; /* Bottom scroll row in virtual screen */
-+
-+ int esc_args; /* Number of arguments for a normal escape sequence */
-+ unsigned int csi_args[NPAR]; /* CSI parameters */
-+ unsigned int index; /* Index in csi_args and counter for cgram characters generation */
-+ unsigned char cgram_index; /* Index of the cgram character to be created */
-+ unsigned char *cgram_buffer; /* Buffer for cgram operations in this driver */
-+
-+ unsigned short erase_char; /* Character to be used when erasing */
-+ unsigned char attr; /* Current attributes */
-+ unsigned char color; /* Color for normal intensity mode */
-+ unsigned char s_color; /* Saved color for normal intensity mode */
-+ unsigned char defcolor; /* Default color for normal intensity mode */
-+ unsigned char ulcolor; /* Color for underline mode */
-+ unsigned char halfcolor; /* Color for low intensity mode */
-+ unsigned char attributes; /* Packed attributes */
-+ unsigned char s_attributes; /* Saved packed attributes */
-+
-+ unsigned char *s_charmap; /* Saved character map for this driver */
-+ unsigned char *flip_buf; /* High speed flip buffer */
-+};
-+
-+/** Function prototypes **/
-+
-+/* Init/Cleanup the driver */
-+static int init_driver(struct lcd_struct *);
-+static int cleanup_driver(struct lcd_struct *);
-+
-+/* Read from/Write to the driver */
-+static void read_data(struct lcd_struct *, unsigned short *);
-+static void read_cgram(struct lcd_struct *, unsigned char, unsigned char *);
-+static void write_data(struct lcd_struct *, unsigned short);
-+static void write_cgram(struct lcd_struct *, unsigned char, unsigned char *);
-+
-+/* Input handlers */
-+static void cr(struct lcd_struct *);
-+static void lf(struct lcd_struct *);
-+static void control_char(struct lcd_struct *, unsigned char);
-+static void handle_csi(struct lcd_struct *, unsigned char);
-+static int handle_custom_esc(struct lcd_struct *, unsigned int);
-+static int handle_esc(struct lcd_struct *, unsigned char);
-+static void handle_input(struct lcd_struct *, unsigned short);
-+
-+/* Low level file operations */
-+static ssize_t do_lcd_read(struct lcd_struct *, void *, size_t);
-+static ssize_t do_lcd_write(struct lcd_struct *, const void *, size_t);
-+static int do_lcd_open(struct lcd_struct *);
-+static int do_lcd_release(struct lcd_struct *);
-+static int do_lcd_ioctl(struct lcd_struct *, unsigned int, unsigned long);
-+
-+/* Proc functions */
-+#ifdef USE_PROC
-+static void create_driver_proc_entries(struct lcd_struct *);
-+static void remove_driver_proc_entries(struct lcd_struct *);
-+#endif
-+
-+/* globals */
-+static unsigned int major = LCD_MAJOR; /* Major number for LCD-Linux device */
-+static unsigned short minors = LCD_MINORS; /* Minor numbers allocated for LCD-Linux */
-+static LIST_HEAD(lcd_drivers); /* Registered lcd drivers */
-+static struct semaphore drivers_sem; /* Locks the lcd_drivers list */
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+static struct class *lcd_linux_class;
-+#endif
-+#ifdef USE_PROC
-+static struct proc_dir_entry *lcd_proc_root;
-+#endif
-+/* End of globals */
-+
-+#ifdef MODULE
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+#include <linux/device.h>
-+MODULE_ALIAS_CHARDEV_MAJOR(LCD_MAJOR);
-+#endif
-+MODULE_DESCRIPTION("Software layer to drive LCD displays under Linux.");
-+MODULE_AUTHOR("Mattia Jona-Lasinio <mjona@users.sourceforge.net>");
-+#ifdef MODULE_LICENSE
-+MODULE_LICENSE("GPL");
-+#endif
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+module_param(minors, ushort, 0444);
-+#else
-+MODULE_PARM(minors, "h");
-+#endif
-+MODULE_PARM_DESC(minors, "Minor numbers allocated for LCD-Linux (default: " string(LCD_MINORS) ")");
-+#else
-+
-+/*
-+ * Parse boot command line
-+ *
-+ * lcd=minors
-+ */
-+static int __init lcd_linux_boot_init(char *cmdline)
-+{
-+ unsigned short args;
-+
-+ if ((args = simple_strtoul(cmdline, NULL, 0)))
-+ minors = args;
-+
-+ return (1);
-+}
-+
-+__setup("lcd=", lcd_linux_boot_init);
-+#endif /* MODULE */
-+
-+/* Macros for iterator handling */
-+static inline unsigned int iterator_inc_(unsigned int iterator, const unsigned int module)
-+{
-+ return ((++iterator)%module);
-+}
-+
-+static inline unsigned int iterator_dec_(unsigned int iterator, const unsigned int module)
-+{
-+ return (iterator ? --iterator : module-1);
-+}
-+
-+#define iterator_inc(iterator, module) (iterator = iterator_inc_(iterator, module))
-+#define iterator_dec(iterator, module) (iterator = iterator_dec_(iterator, module))
-+
-+/* Uncomment the following two lines
-+ * for non-atomic set_bit and clear_bit
-+#define set_bit __set_bit
-+#define clear_bit __clear_bit
-+*/
-+
-+/************************************
-+ * Low level routines and utilities *
-+ ************************************/
-+/*
-+ * Set whether the address counter should be incremented
-+ * or decremented after a Read/Write
-+ */
-+static void address_mode(struct lcd_struct *p, int mode)
-+{
-+ struct lcd_driver *driver = p->driver;
-+
-+ if (mode > 0 && ! test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (driver->address_mode)
-+ driver->address_mode(mode);
-+ set_bit(INC_CURS_POS, &p->struct_flags);
-+ } else if (mode < 0 && test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (driver->address_mode)
-+ driver->address_mode(mode);
-+ clear_bit(INC_CURS_POS, &p->struct_flags);
-+ }
-+}
-+
-+/* WARNING!! This function returns an int because if iterator is not
-+ * within the visible area of the frame it returns -1
-+ */
-+static inline int vs_to_frame_(struct lcd_struct *p, unsigned int iterator)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int row = iterator/vs_cols;
-+ unsigned int col = iterator%vs_cols;
-+ unsigned int frame_base_row = p->frame_base/vs_cols;
-+ unsigned int frame_base_col = p->frame_base%vs_cols;
-+ unsigned int frame_rows = p->par->cntr_rows*p->par->num_cntr;
-+ unsigned int frame_cols = p->par->cntr_cols;
-+
-+ if (row < frame_base_row || row >= frame_base_row+frame_rows)
-+ return (-1);
-+ if (col < frame_base_col || col >= frame_base_col+frame_cols)
-+ return (-1);
-+
-+ return ((row-frame_base_row)*frame_cols+(col-frame_base_col));
-+}
-+
-+/* Given 'iterator' in vs, returns the offset in vs corresponding to the nearest
-+ * visible offset in vs, or returns 'iterator' if it is already visible.
-+ */
-+static unsigned int round_vs_(struct lcd_struct *p, unsigned int iterator)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int row = iterator/vs_cols;
-+ unsigned int col = iterator%vs_cols;
-+ unsigned int frame_base_row = p->frame_base/vs_cols;
-+ unsigned int frame_base_col = p->frame_base%vs_cols;
-+ unsigned int frame_rows = p->par->cntr_rows*p->par->num_cntr;
-+ unsigned int frame_cols = p->par->cntr_cols;
-+
-+ if (row < frame_base_row)
-+ row = frame_base_row;
-+ else if (row >= frame_base_row+frame_rows)
-+ row = frame_base_row+(frame_rows-1);
-+
-+ if (col < frame_base_col)
-+ col = frame_base_col;
-+ else if (col >= frame_base_col+frame_cols)
-+ col = frame_base_col+(frame_cols-1);
-+
-+ return ((row*vs_cols)+col);
-+}
-+
-+#define round_vs(p, iterator) (iterator = round_vs_(p, iterator))
-+
-+/*
-+ * Sync the frame area starting at offset s, ending at offset e with fb content.
-+ */
-+static void redraw_screen(struct lcd_struct *p, unsigned int s, unsigned int e)
-+{
-+ unsigned int len;
-+ unsigned int row = p->row, col = p->col;
-+ unsigned int inc_set = test_bit(INC_CURS_POS, &p->struct_flags);
-+ unsigned int frame_cols = p->par->cntr_cols;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned long flags;
-+
-+ if (s >= p->fb_size || e >= p->fb_size || e < s || e < p->frame_base)
-+ return;
-+
-+ round_vs(p, s);
-+ round_vs(p, e);
-+
-+ len = 1+e-s;
-+
-+ if (! inc_set)
-+ s = e;
-+
-+ p->row = s/vs_cols;
-+ p->col = s%vs_cols;
-+
-+ flags = p->struct_flags;
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ clear_bit(DECIM, &p->struct_flags);
-+ set_bit(DECAWM, &p->struct_flags);
-+ SET_INPUT_STATE(p, RAW);
-+ if (inc_set)
-+ while (len--)
-+ if (vs_to_frame_(p, (p->row*vs_cols)+p->col) < 0) {
-+ s += vs_cols-frame_cols;
-+ len -= vs_cols-frame_cols-1;
-+ p->row = s/vs_cols;
-+ p->col = s%vs_cols;
-+ } else {
-+ write_data(p, p->fb[s++]);
-+ if (test_bit(NEED_WRAP, &p->struct_flags)) {
-+ cr(p);
-+ lf(p);
-+ }
-+ }
-+ else
-+ while (len--)
-+ if (vs_to_frame_(p, (p->row*vs_cols)+p->col) < 0) {
-+ s -= vs_cols-frame_cols;
-+ len -= vs_cols-frame_cols-1;
-+ p->row = s/vs_cols;
-+ p->col = s%vs_cols;
-+ } else {
-+ write_data(p, p->fb[s--]);
-+ if (test_bit(NEED_WRAP, &p->struct_flags)) {
-+ cr(p);
-+ lf(p);
-+ }
-+ }
-+ p->struct_flags = flags;
-+
-+ p->row = row; p->col = col;
-+}
-+
-+static int make_cursor_visible(struct lcd_struct *p)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int frame_base, frame_base_row, frame_base_col;
-+ unsigned int frame_rows = p->par->cntr_rows*p->par->num_cntr;
-+ unsigned int frame_cols = p->par->cntr_cols;
-+ unsigned int tmp = frame_cols/2;
-+
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ /* cursor always on the lowest row of the display */
-+ frame_base_row = 0;
-+ frame_base_col = 0;
-+ if (p->row >= frame_rows)
-+ frame_base_row = p->row-(frame_rows-1);
-+ if (p->col >= frame_cols) {
-+ frame_base_col = p->col-(frame_cols-1);
-+ if (tmp) {
-+ tmp = (tmp-(frame_base_col%tmp))%tmp;
-+ if (frame_base_col+tmp <= vs_cols-frame_cols)
-+ frame_base_col += tmp;
-+ }
-+ }
-+ } else {
-+ /* cursor always on the uppermost row of the display */
-+ frame_base_row = vs_rows-frame_rows;
-+ frame_base_col = vs_cols-frame_cols;
-+ if (p->row < vs_rows-frame_rows)
-+ frame_base_row = p->row;
-+ if (p->col < vs_cols-frame_cols) {
-+ frame_base_col = p->col;
-+ if (tmp) {
-+ tmp = frame_base_col%tmp;
-+ if (frame_base_col >= tmp)
-+ frame_base_col -= tmp;
-+ }
-+ }
-+ }
-+
-+ frame_base = p->frame_base;
-+ p->frame_base = (frame_base_row*vs_cols)+frame_base_col;
-+
-+ return (frame_base != p->frame_base);
-+}
-+
-+/*
-+ * Move the visible screen area at user's wish
-+ */
-+static void browse_screen(struct lcd_struct *p, unsigned char dir)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int frame_base_row = p->frame_base/vs_cols;
-+ unsigned int frame_base_col = p->frame_base%vs_cols;
-+ unsigned int frame_rows = p->par->cntr_rows*p->par->num_cntr;
-+ unsigned int frame_cols = p->par->cntr_cols;
-+
-+ switch (dir) {
-+ case '1': /* Up */
-+ if (! frame_base_row)
-+ return;
-+ --frame_base_row;
-+ break;
-+ case '2': /* Down */
-+ if (frame_base_row >= vs_rows-frame_rows)
-+ return;
-+ ++frame_base_row;
-+ break;
-+ case '3': /* Left */
-+ if (! frame_base_col)
-+ return;
-+ --frame_base_col;
-+ break;
-+ case '4': /* Right */
-+ if (frame_base_col >= vs_cols-frame_cols)
-+ return;
-+ ++frame_base_col;
-+ break;
-+ default:
-+ return;
-+ }
-+
-+ p->frame_base = (frame_base_row*vs_cols)+frame_base_col;
-+ redraw_screen(p, 0, p->fb_size-1);
-+}
-+
-+static inline void __memset_short(unsigned short *buf, unsigned short c, unsigned int len)
-+{
-+ while (len--)
-+ *buf++ = c;
-+}
-+
-+/*
-+ * A memset implementation writing to LCD instead of memory locations.
-+ */
-+static void lcd_memset(struct lcd_struct *p, unsigned int d, unsigned short c, unsigned int len)
-+{
-+ unsigned int inc_set = test_bit(INC_CURS_POS, &p->struct_flags);
-+
-+ if (! len || d >= p->fb_size)
-+ return;
-+
-+ if (inc_set && d+len > p->fb_size)
-+ len = p->fb_size-d;
-+ else if (! inc_set && len > d+1)
-+ len = d+1;
-+
-+ if (! inc_set)
-+ d -= len-1;
-+ __memset_short(p->fb+d, c, len);
-+
-+ if (make_cursor_visible(p))
-+ redraw_screen(p, 0, p->fb_size-1);
-+ else
-+ redraw_screen(p, d, d+(len-1));
-+}
-+
-+static inline void __memcpy_short(unsigned short *d, unsigned short *s, unsigned int len, int dir)
-+{
-+ if (dir > 0)
-+ while (len--)
-+ *d++ = *s++;
-+ else
-+ while (len--)
-+ *d-- = *s--;
-+}
-+
-+/*
-+ * A memmove implementation writing to LCD instead of memory locations.
-+ * Copy is done in a non destructive way. Display regions may overlap.
-+ */
-+static void lcd_memmove(struct lcd_struct *p, unsigned int d, unsigned int s, unsigned int len)
-+{
-+ if (! len || d == s || d >= p->fb_size || s >= p->fb_size)
-+ return;
-+
-+ if (d < s) {
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (s+len > p->fb_size)
-+ len = p->fb_size-s;
-+ } else {
-+ if (len > d+1)
-+ len = d+1;
-+ d -= len-1;
-+ s -= len-1;
-+ }
-+ __memcpy_short(p->fb+d, p->fb+s, len, 1);
-+ if (make_cursor_visible(p))
-+ redraw_screen(p, 0, p->fb_size-1);
-+ else
-+ redraw_screen(p, d, d+(len-1));
-+ } else {
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (d+len > p->fb_size)
-+ len = p->fb_size-d;
-+ d += len-1;
-+ s += len-1;
-+ } else {
-+ if (len > s+1)
-+ len = s+1;
-+ }
-+ __memcpy_short(p->fb+d, p->fb+s, len, -1);
-+ if (make_cursor_visible(p))
-+ redraw_screen(p, 0, p->fb_size-1);
-+ else
-+ redraw_screen(p, d-(len-1), d);
-+ }
-+}
-+
-+static void scrup(struct lcd_struct *p, unsigned int t, unsigned int b, unsigned int nr)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int d, s;
-+
-+ if (t+nr >= b)
-+ nr = b-t-1;
-+ if (b > vs_rows || t >= b || nr < 1)
-+ return;
-+ d = t*vs_cols;
-+ s = (t+nr)*vs_cols;
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ lcd_memmove(p, d, s, (b-t-nr)*vs_cols);
-+ lcd_memset(p, d+(b-t-nr)*vs_cols, p->erase_char, nr*vs_cols);
-+ } else {
-+ lcd_memmove(p, d+(b-t-nr)*vs_cols-1, s+(b-t-nr)*vs_cols-1, (b-t-nr)*vs_cols);
-+ lcd_memset(p, d+(b-t)*vs_cols-1, p->erase_char, nr*vs_cols);
-+ }
-+}
-+
-+static void scrdown(struct lcd_struct *p, unsigned int t, unsigned int b, unsigned int nr)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int d, s;
-+
-+ if (t+nr >= b)
-+ nr = b-t-1;
-+ if (b > vs_rows || t >= b || nr < 1)
-+ return;
-+ s = t*vs_cols;
-+ d = (t+nr)*vs_cols;
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ lcd_memmove(p, d, s, (b-t-nr)*vs_cols);
-+ lcd_memset(p, s, p->erase_char, nr*vs_cols);
-+ } else {
-+ lcd_memmove(p, d+(b-t-nr)*vs_cols-1, s+(b-t-nr)*vs_cols-1, (b-t-nr)*vs_cols);
-+ lcd_memset(p, s+nr*vs_cols-1, p->erase_char, nr*vs_cols);
-+ }
-+}
-+
-+static void lcd_insert_char(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int pos = (p->row*vs_cols)+p->col;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (test_bit(INC_CURS_POS, &p->struct_flags))
-+ lcd_memmove(p, pos+nr, pos, vs_cols-p->col-nr);
-+ else
-+ lcd_memmove(p, pos-nr, pos, p->col-(nr-1));
-+ lcd_memset(p, pos, p->erase_char, nr);
-+}
-+
-+static void lcd_delete_char(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int pos = (p->row*vs_cols)+p->col;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ lcd_memmove(p, pos, pos+nr, vs_cols-(p->col+nr));
-+ lcd_memset(p, (p->row+1)*vs_cols-nr, p->erase_char, nr);
-+ } else {
-+ lcd_memmove(p, pos, pos-nr, p->col-(nr-1));
-+ lcd_memset(p, (p->row*vs_cols)+(nr-1), p->erase_char, nr);
-+ }
-+}
-+
-+
-+
-+
-+
-+/******************************************************************************
-+ ************************* VT 102 Emulation *************************
-+ ******************************************************************************/
-+
-+/**********************
-+ * Control characters *
-+ **********************/
-+static void bs(struct lcd_struct *p)
-+{
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (p->col)
-+ --p->col;
-+ } else {
-+ if (p->col+1 < p->par->vs_cols)
-+ ++p->col;
-+ }
-+}
-+
-+static void cr(struct lcd_struct *p)
-+{
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ p->col = (test_bit(INC_CURS_POS, &p->struct_flags) ? 0 : p->par->vs_cols-1);
-+}
-+
-+static void lf(struct lcd_struct *p)
-+{
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (p->row+1 == p->bot && INPUT_STATE(p) != RAW) {
-+ make_cursor_visible(p);
-+ scrup(p, p->top, p->bot, 1);
-+ } else if (p->row+1 < p->par->vs_rows)
-+ ++p->row;
-+ } else {
-+ if (p->row == p->top && INPUT_STATE(p) != RAW) {
-+ make_cursor_visible(p);
-+ scrdown(p, p->top, p->bot, 1);
-+ } else if (p->row)
-+ --p->row;
-+ }
-+}
-+
-+static void ri(struct lcd_struct *p)
-+{
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (p->row == p->top) {
-+ make_cursor_visible(p);
-+ scrdown(p, p->top, p->bot, 1);
-+ } else if (p->row)
-+ --p->row;
-+ } else {
-+ if (p->row+1 == p->bot) {
-+ make_cursor_visible(p);
-+ scrup(p, p->top, p->bot, 1);
-+ } else if (p->row+1 < p->par->vs_rows)
-+ ++p->row;
-+ }
-+}
-+
-+static void ff(struct lcd_struct *p)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (p->driver->clear_display) {
-+ p->driver->clear_display();
-+ __memset_short(p->fb, p->erase_char, p->fb_size);
-+ __memset_short(p->display, p->erase_char, p->frame_size);
-+ p->frame_base = 0;
-+ } else if (test_bit(INC_CURS_POS, &p->struct_flags))
-+ lcd_memset(p, 0, p->erase_char, p->fb_size);
-+ else
-+ lcd_memset(p, p->fb_size-1, p->erase_char, p->fb_size);
-+
-+ if (test_bit(INC_CURS_POS, &p->struct_flags))
-+ p->row = p->col = 0;
-+ else {
-+ p->row = vs_rows-1;
-+ p->col = vs_cols-1;
-+ }
-+}
-+
-+static void tab(struct lcd_struct *p)
-+{
-+ struct lcd_parameters *par = p->par;
-+ unsigned int i, vs_cols = par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+
-+ if (! par->tabstop)
-+ return;
-+
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ i = par->tabstop-(p->col%par->tabstop);
-+ if (p->col+i < vs_cols)
-+ p->col += i;
-+ } else {
-+ i = p->col%par->tabstop;
-+ i = (i == 0 ? par->tabstop : i);
-+ if (p->col >= i)
-+ p->col -= i;
-+ }
-+}
-+
-+/*
-+ * Control character handler.
-+ */
-+static void control_char(struct lcd_struct *p, unsigned char val)
-+{
-+ switch (val) {
-+ case 0x08: /* BS: Back Space (^H) */
-+ case 0x7f: /* DEL: Delete */
-+ bs(p);
-+ return;
-+
-+ case 0x09: /* HT: Horizontal Tab (^I) */
-+ tab(p);
-+ return;
-+
-+ case 0x0c: /* FF: Form Feed (^L) */
-+ ff(p);
-+ return;
-+
-+ case 0x0a: /* LF: Line Feed (^J) */
-+ case 0x0b: /* VT: Vertical Tab (^K) */
-+ lf(p);
-+ if (! test_bit(CRLF, &p->struct_flags))
-+ return;
-+
-+ case 0x0d: /* CR: Carriage Return (^M) */
-+ cr(p);
-+ return;
-+
-+ case 0x16: /* SYN: Synchronous Idle (^V) */
-+ SET_INPUT_STATE(p, SYN);
-+ return;
-+
-+ case 0x1b: /* ESC: Start of escape sequence */
-+ SET_INPUT_STATE(p, ESC);
-+ return;
-+
-+ case 0x9b: /* CSI: Start of CSI escape sequence */
-+ memset(p->csi_args, 0, sizeof(p->csi_args));
-+ p->index = 0;
-+ SET_INPUT_STATE(p, CSI);
-+ return;
-+ }
-+}
-+
-+static void gotoxy(struct lcd_struct *p, int new_col, int new_row)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (new_row < 0)
-+ p->row = 0;
-+ else if (new_row >= vs_rows)
-+ p->row = vs_rows-1;
-+ else
-+ p->row = new_row;
-+
-+ if (new_col < 0)
-+ p->col = 0;
-+ else if (new_col >= vs_cols)
-+ p->col = vs_cols-1;
-+ else
-+ p->col = new_col;
-+
-+ if (make_cursor_visible(p))
-+ redraw_screen(p, 0, p->fb_size-1);
-+}
-+
-+
-+/******************************
-+ * ECMA-48 CSI ESC- sequences *
-+ ******************************/
-+static void csi_at(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ if (p->col+nr > vs_cols)
-+ nr = vs_cols-p->col;
-+ else if (! nr)
-+ ++nr;
-+ lcd_insert_char(p, nr);
-+}
-+
-+static void csi_J(struct lcd_struct *p, unsigned int action)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int pos = (p->row*vs_cols)+p->col;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ switch (action) {
-+ case 0: /* From cursor to end of display */
-+ lcd_memset(p, pos, p->erase_char, p->fb_size-pos);
-+ return;
-+
-+ case 1: /* From start of display to cursor */
-+ lcd_memset(p, 0, p->erase_char, pos+1);
-+ return;
-+
-+ case 2: /* Whole display */
-+ lcd_memset(p, 0, p->erase_char, p->fb_size);
-+ return;
-+ }
-+}
-+
-+static void csi_K(struct lcd_struct *p, unsigned int action)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int row_start = p->row*vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ switch (action) {
-+ case 0: /* From cursor to end of line */
-+ lcd_memset(p, row_start+p->col, p->erase_char, vs_cols-p->col);
-+ return;
-+
-+ case 1: /* From start of line to cursor */
-+ lcd_memset(p, row_start, p->erase_char, p->col+1);
-+ return;
-+
-+ case 2: /* Whole line */
-+ lcd_memset(p, row_start, p->erase_char, vs_cols);
-+ return;
-+ }
-+}
-+
-+static void csi_L(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (p->row+nr > vs_rows)
-+ nr = vs_rows-p->row;
-+ else if (! nr)
-+ ++nr;;
-+ lcd_memmove(p, (p->row+nr)*vs_cols, p->row*vs_cols, (vs_rows-p->row-nr)*vs_cols);
-+ lcd_memset(p, p->row*vs_cols, p->erase_char, nr*vs_cols);
-+}
-+
-+static void csi_M(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (p->row+nr > vs_rows)
-+ nr = vs_rows-p->row;
-+ else if (! nr)
-+ ++nr;;
-+ lcd_memmove(p, p->row*vs_cols, (p->row+nr)*vs_cols, (vs_rows-p->row-nr)*vs_cols);
-+ lcd_memset(p, (vs_rows-nr)*vs_cols, p->erase_char, nr*vs_cols);
-+}
-+
-+static void csi_P(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ if (p->col+nr > vs_cols)
-+ nr = vs_cols-p->col;
-+ else if (! nr)
-+ ++nr;
-+ lcd_delete_char(p, nr);
-+}
-+
-+static void csi_X(struct lcd_struct *p, unsigned int nr)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (p->col+nr > vs_cols)
-+ nr = vs_cols-p->col;
-+ else if (! nr)
-+ ++nr;
-+ lcd_memset(p, (p->row*vs_cols)+p->col, p->erase_char, nr);
-+}
-+
-+static void csi_su(struct lcd_struct *p, unsigned char input)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ if (input == 'u') {
-+ p->row = p->s_offset/vs_cols;
-+ p->col = p->s_offset%vs_cols;
-+ p->color = p->s_color;
-+ p->attributes = p->s_attributes;
-+ return;
-+ }
-+ p->s_offset = (p->row*vs_cols)+p->col;
-+ p->s_color = p->color;
-+ p->s_attributes = p->attributes;
-+}
-+
-+static unsigned char build_attr(struct lcd_struct *p, unsigned char color, unsigned char intensity,
-+ unsigned char blink, unsigned char underline, unsigned char reverse)
-+{
-+ unsigned char attr;
-+
-+ if (test_bit(CAN_DO_COLOR, &p->struct_flags)) {
-+ attr = color;
-+ if (underline)
-+ attr = (attr & BG_MASK) | p->ulcolor;
-+ else if (intensity == 0)
-+ attr = (attr & BG_MASK) | p->halfcolor;
-+ if (reverse)
-+ attr = (attr & 0x88) | ((attr & 0x70) >> 4) | ((attr & 0x07) << 4);
-+ if (blink)
-+ attr ^= 0x80;
-+ if (intensity == 2)
-+ attr ^= 0x08;
-+ } else {
-+ attr = intensity;
-+ attr |= (underline ? ULINE : 0x00);
-+ attr |= (reverse ? REVERSE : 0x00);
-+ attr |= (blink ? BLINK : 0x00);
-+ }
-+
-+ return (attr);
-+}
-+
-+static void update_attr(struct lcd_struct *p)
-+{
-+ unsigned char intensity = p->attributes & 0x03;
-+ unsigned char underline = (p->attributes >> 2) & 0x01;
-+ unsigned char reverse = (p->attributes >> 3) & 0x01;
-+ unsigned char blink = (p->attributes >> 7) & 0x01;
-+ unsigned char decscnm = (p->struct_flags >> DECSCNM) & 0x01;
-+
-+ p->attr = build_attr(p, p->color, intensity, blink, underline, reverse^decscnm);
-+ p->erase_char = (build_attr(p, p->color, 1, blink, 0, decscnm) << 8) | ' ';
-+}
-+
-+static void default_attr(struct lcd_struct *p)
-+{
-+ p->attributes = 0x01;
-+ p->color = p->defcolor;
-+}
-+
-+static void lcd_invert_screen(struct lcd_struct *p, unsigned int offset, unsigned int len)
-+{
-+ if (test_bit(CAN_DO_COLOR, &p->struct_flags))
-+ while (len--) {
-+ p->fb[offset] = (p->fb[offset] & 0x88ff) | ((p->fb[offset] & 0x7000) >> 4) | ((p->fb[offset] & 0x0700) << 4);
-+ ++offset;
-+ }
-+ else
-+ while (len--) {
-+ p->fb[offset] ^= 0x0800;
-+ ++offset;
-+ }
-+}
-+
-+static void csi_m(struct lcd_struct *p, unsigned int n)
-+{
-+ int i, arg;
-+
-+ for (i = 0; i <= n; ++i)
-+ switch ((arg = p->csi_args[i]))
-+ {
-+ case 0:
-+ default_attr(p);
-+ break;
-+
-+ case 1:
-+ p->attributes = (p->attributes & ~I_MASK) | 2;
-+ break;
-+
-+ case 2:
-+ p->attributes = (p->attributes & ~I_MASK) | 0;
-+ break;
-+
-+ case 4:
-+ p->attributes |= ULINE;
-+ break;
-+
-+ case 5:
-+ p->attributes |= BLINK;
-+ break;
-+
-+ case 7:
-+ p->attributes |= REVERSE;
-+ break;
-+
-+ case 21: case 22:
-+ p->attributes = (p->attributes & ~I_MASK) | 1;
-+ break;
-+
-+ case 24:
-+ p->attributes &= ~ULINE;
-+ break;
-+
-+ case 25:
-+ p->attributes &= ~BLINK;
-+ break;
-+
-+ case 27:
-+ p->attributes &= ~REVERSE;
-+ break;
-+
-+ case 38:
-+ p->attributes |= ULINE;
-+ p->color = (p->color & BG_MASK) | (p->defcolor & FG_MASK);
-+ break;
-+
-+ case 39:
-+ p->attributes &= ~ULINE;
-+ p->color = (p->color & BG_MASK) | (p->defcolor & FG_MASK);
-+ break;
-+
-+ case 49:
-+ p->color = (p->defcolor & BG_MASK) | (p->color & FG_MASK);
-+ break;
-+
-+ default:
-+ if (arg >= 30 && arg <= 37)
-+ p->color = (p->color & BG_MASK) | color_table[arg-30];
-+ else if (arg >= 40 && arg <= 47)
-+ p->color = (p->color & FG_MASK) | (color_table[arg-40] << 4);
-+ break;
-+ }
-+
-+ update_attr(p);
-+}
-+
-+static void csi_h(struct lcd_struct *p, unsigned char n)
-+{
-+ switch (n) {
-+ case 4: /* Set insert mode */
-+ set_bit(DECIM, &p->struct_flags);
-+ return;
-+
-+ case 5: /* Inverted screen mode */
-+ if (test_bit(QUES, &p->struct_flags) && ! test_bit(DECSCNM, &p->struct_flags)) {
-+ set_bit(DECSCNM, &p->struct_flags);
-+ lcd_invert_screen(p, 0, p->fb_size);
-+ update_attr(p);
-+ redraw_screen(p, 0, p->fb_size-1);
-+ }
-+ return;
-+
-+ case 7: /* Set autowrap */
-+ if (test_bit(QUES, &p->struct_flags))
-+ set_bit(DECAWM, &p->struct_flags);
-+ return;
-+
-+ case 20: /* Set cr lf */
-+ set_bit(CRLF, &p->struct_flags);
-+ return;
-+ }
-+}
-+
-+static void csi_l(struct lcd_struct *p, unsigned char n)
-+{
-+ switch (n) {
-+ case 4: /* Reset insert mode */
-+ clear_bit(DECIM, &p->struct_flags);
-+ return;
-+
-+ case 5: /* Normal screen mode */
-+ if (test_bit(QUES, &p->struct_flags) && test_bit(DECSCNM, &p->struct_flags)) {
-+ clear_bit(DECSCNM, &p->struct_flags);
-+ lcd_invert_screen(p, 0, p->fb_size);
-+ update_attr(p);
-+ redraw_screen(p, 0, p->fb_size-1);
-+ }
-+ return;
-+
-+ case 7: /* Reset autowrap */
-+ if (test_bit(QUES, &p->struct_flags))
-+ clear_bit(DECAWM, &p->struct_flags);
-+ return;
-+
-+ case 20: /* Reset cr lf */
-+ clear_bit(CRLF, &p->struct_flags);
-+ return;
-+ }
-+}
-+
-+static void csi_linux(struct lcd_struct *p)
-+{
-+ switch (p->csi_args[0]) {
-+ case 1:
-+ if (test_bit(CAN_DO_COLOR, &p->struct_flags) && p->csi_args[1] < 16) {
-+ p->ulcolor = color_table[p->csi_args[1]];
-+ if (p->attributes & ULINE)
-+ update_attr(p);
-+ }
-+ return;
-+
-+ case 2:
-+ if (test_bit(CAN_DO_COLOR, &p->struct_flags) && p->csi_args[1] < 16) {
-+ p->halfcolor = color_table[p->csi_args[1]];
-+ if ((p->attributes & I_MASK) == 0)
-+ update_attr(p);
-+ }
-+ return;
-+
-+ case 8:
-+ p->defcolor = p->color;
-+ default_attr(p);
-+ update_attr(p);
-+ return;
-+ }
-+}
-+
-+static void csi_r(struct lcd_struct *p, unsigned int top, unsigned int bot)
-+{
-+ /* Minimum allowed region is 2 lines */
-+ if (top < bot) {
-+ p->top = top-1;
-+ p->bot = bot;
-+ gotoxy(p, 0, 0);
-+ }
-+}
-+
-+/*
-+ * ECMA-48 CSI ESC- sequence handler.
-+ */
-+static void handle_csi(struct lcd_struct *p, unsigned char input)
-+{
-+ if (p->index >= NPAR) {
-+ SET_INPUT_STATE(p, NORMAL);
-+ printk(KERN_NOTICE "LCD: too many parameters in CSI escape sequence\n");
-+ } else if (input == '?') {
-+ set_bit(QUES, &p->struct_flags);
-+ } else if (input == ';') {
-+ ++p->index;
-+ } else if (input >= '0' && input <= '9') {
-+ p->csi_args[p->index] = (p->csi_args[p->index]*10)+(input-'0');
-+ } else {
-+ SET_INPUT_STATE(p, NORMAL);
-+ if (! test_bit(INC_CURS_POS, &p->struct_flags))
-+ return;
-+ switch (input) {
-+ case 'h': /* DECSET sequences and mode switches */
-+ csi_h(p, p->csi_args[0]);
-+ clear_bit(QUES, &p->struct_flags);
-+ return;
-+
-+ case 'l': /* DECRST sequences and mode switches */
-+ csi_l(p, p->csi_args[0]);
-+ clear_bit(QUES, &p->struct_flags);
-+ return;
-+ }
-+ clear_bit(QUES, &p->struct_flags);
-+ switch (input) {
-+ case '@': /* Insert # Blank character */
-+ csi_at(p, p->csi_args[0]);
-+ return;
-+
-+ case 'G': case '`': /* Cursor to indicated column in current row */
-+ if (p->csi_args[0])
-+ --p->csi_args[0];
-+ gotoxy(p, p->csi_args[0], p->row);
-+ return;
-+
-+ case 'A': /* Cursor # rows Up */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, p->col, p->row-p->csi_args[0]);
-+ return;
-+
-+ case 'B': case 'e': /* Cursor # rows Down */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, p->col, p->row+p->csi_args[0]);
-+ return;
-+
-+ case 'C': case 'a': /* Cursor # columns Right */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, p->col+p->csi_args[0], p->row);
-+ return;
-+
-+ case 'D': /* Cursor # columns Left */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, p->col-p->csi_args[0], p->row);
-+ return;
-+
-+ case 'E': /* Cursor # rows Down, column 1 */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, 0, p->row+p->csi_args[0]);
-+ return;
-+
-+ case 'F': /* Cursor # rows Up, column 1 */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ gotoxy(p, 0, p->row-p->csi_args[0]);
-+ return;
-+
-+ case 'd': /* Cursor to indicated row in current column */
-+ if (p->csi_args[0])
-+ --p->csi_args[0];
-+ gotoxy(p, p->col, p->csi_args[0]);
-+ return;
-+
-+ case 'H': case 'f': /* Cursor to indicated row, column (origin 1, 1) */
-+ if (p->csi_args[0])
-+ --p->csi_args[0];
-+ if (p->csi_args[1])
-+ --p->csi_args[1];
-+ gotoxy(p, p->csi_args[1], p->csi_args[0]);
-+ return;
-+
-+ case 'J': /* Erase display */
-+ csi_J(p, p->csi_args[0]);
-+ return;
-+
-+ case 'K': /* Erase line */
-+ csi_K(p, p->csi_args[0]);
-+ return;
-+
-+ case 'L': /* Insert # blank lines */
-+ csi_L(p, p->csi_args[0]);
-+ return;
-+
-+ case 'M': /* Delete # blank lines */
-+ csi_M(p, p->csi_args[0]);
-+ return;
-+
-+ case 'P': /* Delete # characters on the current line */
-+ csi_P(p, p->csi_args[0]);
-+ return;
-+
-+ case 'X': /* Erase # characters on the current line */
-+ csi_X(p, p->csi_args[0]);
-+ return;
-+
-+ case 'm': /* Set video attributes */
-+ csi_m(p, p->index);
-+ return;
-+
-+ case 's': /* Save cursor position */
-+ case 'u': /* Restore cursor position */
-+ csi_su(p, input);
-+ return;
-+
-+ case ']': /* Linux private ESC [ ] sequence */
-+ csi_linux(p);
-+ return;
-+
-+ case 'r': /* Set the scrolling region */
-+ if (! p->csi_args[0])
-+ ++p->csi_args[0];
-+ if (! p->csi_args[1] || p->csi_args[1] > p->par->vs_rows)
-+ p->csi_args[1] = p->par->vs_rows;
-+ csi_r(p, p->csi_args[0], p->csi_args[1]);
-+ return;
-+
-+ /* Ignored escape sequences */
-+ case 'c':
-+ case 'g':
-+ case 'n':
-+ case 'q':
-+ return;
-+
-+ default:
-+ printk(KERN_NOTICE "LCD: unrecognized CSI escape sequence: ESC [ %u\n", input);
-+ return;
-+ }
-+ }
-+}
-+
-+/*
-+ * Custom ESC- sequence handler.
-+ */
-+static int handle_custom_esc(struct lcd_struct *p, unsigned int _input)
-+{
-+ unsigned char input = _input & 0xff;
-+ struct lcd_parameters *par = p->par;
-+
-+ if (_input & (~0xff)) {
-+ switch (ESC_STATE(p)) {
-+ case 's':
-+ if (p->index++) {
-+ unsigned char *buf = p->cgram_buffer+(p->cgram_index-par->cgram_char0)*par->cgram_bytes;
-+
-+ buf[p->index-2] = input;
-+ if (p->index == par->cgram_bytes+1)
-+ write_cgram(p, p->cgram_index, buf);
-+ } else {
-+ if (! p->driver->write_cgram_char) {
-+ printk(KERN_ERR "LCD: %s: missing function to write to CGRAM\n", p->par->name);
-+ return (-1);
-+ }
-+ if (input >= par->cgram_char0 && input < par->cgram_char0+par->cgram_chars)
-+ p->cgram_index = input;
-+ else {
-+ printk(KERN_NOTICE "LCD: bad CGRAM index\n");
-+ return (-1);
-+ }
-+ }
-+ return (0);
-+
-+ case 'G':
-+ if (input >= par->cgram_char0 && input < par->cgram_char0+par->cgram_chars)
-+ write_data(p, (p->attr << 8) | p->driver->charmap[input]);
-+ else {
-+ SET_INPUT_STATE(p, NORMAL);
-+ handle_input(p, (p->attr << 8) | input);
-+ }
-+ return (0);
-+
-+ case 'r':
-+ if (input == '1')
-+ address_mode(p, -1);
-+ else if (input == '0')
-+ address_mode(p, 1);
-+ return (0);
-+
-+ case 'A':
-+ scrup(p, p->top, p->bot, input);
-+ return (0);
-+
-+ case 'B':
-+ scrdown(p, p->top, p->bot, input);
-+ return (0);
-+
-+ case 'C':
-+ browse_screen(p, input);
-+ return (0);
-+ }
-+ }
-+
-+ /* These are the custom ESC- sequences */
-+ switch (input) {
-+ case 's': /* CGRAM select */
-+ if (p->cgram_buffer) {
-+ SET_ESC_STATE(p, input);
-+ p->index = 0;
-+ return (par->cgram_bytes+1);
-+ } else {
-+ printk(KERN_NOTICE "LCD: driver %s does not support CGRAM chars\n", par->name);
-+ return (0);
-+ }
-+
-+ case 'A': /* Scroll up */
-+ case 'B': /* Scroll down */
-+ case 'C': /* Browse screen */
-+ case 'G': /* Enter cgram mode */
-+ case 'r': /* Decrement counter after data read/write */
-+ SET_ESC_STATE(p, input);
-+ return (1);
-+ }
-+
-+ return (-1);
-+}
-+
-+/*
-+ * ESC- but not CSI sequence handler.
-+ */
-+static int handle_esc(struct lcd_struct *p, unsigned char input)
-+{
-+ int ret;
-+
-+ SET_INPUT_STATE(p, NORMAL);
-+ switch (input) {
-+ case 'c': /* Reset */
-+ set_bit(DECAWM, &p->struct_flags);
-+ set_bit(INC_CURS_POS, &p->struct_flags);
-+ ff(p);
-+ return (0);
-+
-+ case 'D': /* Line Feed */
-+ lf(p);
-+ return (0);
-+
-+ case 'E': /* New Line */
-+ cr(p);
-+ lf(p);
-+ return (0);
-+
-+ case 'M': /* Reverse Line Feed */
-+ ri(p);
-+ return (0);
-+
-+ case '7':
-+ case '8':
-+ csi_su(p, (input == '7' ? 's' : 'u'));
-+ return (0);
-+
-+ /* CSI: Start of CSI escape sequence */
-+ case '[':
-+ memset(p->csi_args, 0, sizeof(p->csi_args));
-+ p->index = 0;
-+ SET_INPUT_STATE(p, CSI);
-+ return (0);
-+
-+ /* Ignored escape sequences */
-+ case '(':
-+ SET_INPUT_STATE(p, ESC_G0);
-+ return (1);
-+
-+ case ')':
-+ SET_INPUT_STATE(p, ESC_G1);
-+ return (1);
-+
-+ case '#':
-+ SET_INPUT_STATE(p, ESC_HASH);
-+ return (1);
-+
-+ case '%':
-+ SET_INPUT_STATE(p, ESC_PERCENT);
-+ return (1);
-+
-+ case 'H':
-+ case 'Z':
-+ case '>':
-+ case '=':
-+ case ']':
-+ return (0);
-+ }
-+
-+ /* These are the custom ESC- sequences */
-+ if ((ret = handle_custom_esc(p, input)) > 0) {
-+ SET_INPUT_STATE(p, ARG);
-+ return (ret);
-+ }
-+
-+ if (ret < 0 && p->driver->handle_custom_char)
-+ if ((ret = p->driver->handle_custom_char(input)) > 0) {
-+ SET_INPUT_STATE(p, ARG_DRIVER);
-+ return (ret);
-+ }
-+
-+ if (ret < 0)
-+ printk(KERN_NOTICE "LCD: unrecognized escape sequence: ESC %u\n", input);
-+
-+ return (0);
-+}
-+
-+/*
-+ * Main input handler.
-+ */
-+static void handle_input(struct lcd_struct *p, unsigned short _input)
-+{
-+ unsigned char input = _input & 0xff;
-+ struct lcd_driver *driver = p->driver;
-+
-+ switch (INPUT_STATE(p)) {
-+ case NORMAL:
-+ if (input < 0x20 || input == 0x9b)
-+ control_char(p, input);
-+ else
-+ write_data(p, (_input & 0xff00) | driver->charmap[input]);
-+ return;
-+
-+ case RAW:
-+ write_data(p, (_input & 0xff00) | driver->charmap[input]);
-+ return;
-+
-+ case SYN:
-+ write_data(p, _input);
-+ SET_INPUT_STATE(p, NORMAL);
-+ return;
-+
-+ case ESC:
-+ p->esc_args = handle_esc(p, input);
-+ return;
-+
-+ case ESC_G0:
-+ case ESC_G1:
-+ case ESC_HASH:
-+ case ESC_PERCENT:
-+ if (! --p->esc_args)
-+ SET_INPUT_STATE(p, NORMAL);
-+ return;
-+
-+ case CSI:
-+ handle_csi(p, input);
-+ return;
-+
-+ case ARG:
-+ if (handle_custom_esc(p, 0x100 | input) || ! --p->esc_args)
-+ SET_INPUT_STATE(p, NORMAL);
-+ return;
-+
-+ case ARG_DRIVER:
-+ if (driver->handle_custom_char(0x100 | input) || ! --p->esc_args)
-+ SET_INPUT_STATE(p, NORMAL);
-+ return;
-+ }
-+}
-+
-+
-+
-+
-+
-+/***************************************
-+ * Read from/Write to display routines *
-+ ***************************************/
-+
-+/*
-+ * Write character data to the display.
-+ */
-+static void write_data(struct lcd_struct *p, unsigned short data)
-+{
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int pos;
-+ int frame_pos;
-+
-+ if (test_bit(NEED_WRAP, &p->struct_flags)) {
-+ cr(p);
-+ lf(p);
-+ }
-+
-+ if (test_bit(DECIM, &p->struct_flags))
-+ lcd_insert_char(p, 1);
-+
-+ pos = (p->row*vs_cols)+p->col;
-+ if ((frame_pos = vs_to_frame_(p, pos)) < 0) {
-+ make_cursor_visible(p);
-+ redraw_screen(p, 0, p->fb_size-1);
-+ frame_pos = vs_to_frame_(p, pos);
-+ }
-+
-+ if (p->display[frame_pos] != data) {
-+ p->driver->write_char(frame_pos, data);
-+ p->display[frame_pos] = data;
-+ }
-+
-+ p->fb[pos] = data;
-+
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ if (p->col+1 < vs_cols)
-+ iterator_inc(p->col, vs_cols);
-+ else if (test_bit(DECAWM, &p->struct_flags))
-+ set_bit(NEED_WRAP, &p->struct_flags);
-+ } else {
-+ if (p->col)
-+ iterator_dec(p->col, vs_cols);
-+ else if (test_bit(DECAWM, &p->struct_flags))
-+ set_bit(NEED_WRAP, &p->struct_flags);
-+ }
-+}
-+
-+/*
-+ * Write an entire CGRAM character to the display.
-+ */
-+static void write_cgram(struct lcd_struct *p, unsigned char index, unsigned char *pixels)
-+{
-+ unsigned int inc_set = test_bit(INC_CURS_POS, &p->struct_flags);
-+
-+ if (! inc_set)
-+ address_mode(p, 1);
-+
-+ p->driver->write_cgram_char(index, pixels);
-+
-+ if (! inc_set)
-+ address_mode(p, -1);
-+}
-+
-+/*
-+ * Read character data from the display.
-+ */
-+static void read_data(struct lcd_struct *p, unsigned short *data)
-+{
-+ unsigned int vs_rows = p->par->vs_rows;
-+ unsigned int vs_cols = p->par->vs_cols;
-+ unsigned int pos = (p->row*vs_cols)+p->col;
-+ int frame_pos;
-+
-+ if ((frame_pos = vs_to_frame_(p, pos)) < 0) {
-+ make_cursor_visible(p);
-+ redraw_screen(p, 0, p->fb_size-1);
-+ frame_pos = vs_to_frame_(p, pos);
-+ }
-+
-+ p->driver->read_char(frame_pos, data);
-+
-+ if (test_bit(INC_CURS_POS, &p->struct_flags)) {
-+ iterator_inc(p->col, vs_cols);
-+ if (! p->col) {
-+ if (p->row+1 < vs_rows)
-+ ++p->row;
-+ }
-+ } else {
-+ iterator_dec(p->col, vs_cols);
-+ if (p->col+1 == vs_cols) {
-+ if (p->row)
-+ --p->row;
-+ }
-+ }
-+}
-+
-+/*
-+ * Read an entire CGRAM character from the display.
-+ */
-+static void read_cgram(struct lcd_struct *p, unsigned char index, unsigned char *pixels)
-+{
-+ unsigned int inc_set = test_bit(INC_CURS_POS, &p->struct_flags);
-+
-+ if (! inc_set)
-+ address_mode(p, 1);
-+
-+ p->driver->read_cgram_char(index, pixels);
-+
-+ if (! inc_set)
-+ address_mode(p, -1);
-+}
-+
-+
-+
-+
-+
-+/****************************
-+ * Proc filesystem routines *
-+ ****************************/
-+#ifdef USE_PROC
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 0)
-+/* create_proc_read_entry is missing in 2.2.x kernels */
-+static struct proc_dir_entry *create_proc_read_entry(const char *name, mode_t mode,
-+ struct proc_dir_entry *parent, read_proc_t *read_proc, void *data)
-+{
-+ struct proc_dir_entry *res = create_proc_entry(name, mode, parent);
-+
-+ if (res) {
-+ res->read_proc = read_proc;
-+ res->data = data;
-+ }
-+
-+ return (res);
-+}
-+#endif
-+
-+static int proc_fb_read(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+ struct lcd_struct *p = (struct lcd_struct *)data;
-+ unsigned int vs_cols;
-+ static unsigned int nr, need_wrap;
-+ static off_t _offset;
-+
-+ down(&p->lcd_sem);
-+ if (! offset)
-+ _offset = 0;
-+ if ((*eof = (_offset >= p->fb_size))) {
-+ up(&p->lcd_sem);
-+ return (0);
-+ }
-+ vs_cols = p->par->vs_cols;
-+ if (size && need_wrap) {
-+ need_wrap = 0;
-+ temp += sprintf(temp, "\n");
-+ --size;
-+ }
-+ if (! nr)
-+ nr = vs_cols;
-+ *start = (char *)0;
-+ while (size && nr) {
-+ unsigned char c = (p->fb[_offset] & 0xff);
-+
-+ temp += sprintf(temp, "%c", (c < 0x20 ? '·' : c));
-+ --size;
-+ --nr;
-+ ++*start;
-+ ++_offset;
-+ }
-+ if (! nr) {
-+ if (size) {
-+ temp += sprintf(temp, "\n");
-+ --size;
-+ } else
-+ need_wrap = 1;
-+ }
-+ up(&p->lcd_sem);
-+
-+ return (temp-buffer);
-+}
-+
-+static int proc_display_read(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+ struct lcd_struct *p = (struct lcd_struct *)data;
-+ unsigned int i, frame_cols;
-+ int frame_pos;
-+
-+ down(&p->lcd_sem);
-+ frame_cols = p->par->cntr_cols;
-+ frame_pos = vs_to_frame_(p, (p->row*p->par->vs_cols)+p->col);
-+ temp += sprintf(temp, " ");
-+ for (i = 2; i <= frame_cols; i += 2)
-+ temp += sprintf(temp, " %d", i%10);
-+ temp += sprintf(temp, "\n");
-+
-+ temp += sprintf(temp, " +");
-+ for (i = 0; i < frame_cols; ++i)
-+ temp += sprintf(temp, "-");
-+ temp += sprintf(temp, "+\n");
-+
-+ for (i = 0; i < p->frame_size; ++i) {
-+ unsigned char c = (p->display[i] & 0xff);
-+
-+ if (! (i%frame_cols))
-+ temp += sprintf(temp, "%2d |", 1+i/frame_cols);
-+ if (frame_pos--)
-+ temp += sprintf(temp, "%c", (c < 0x20 ? '·' : c));
-+ else
-+ temp += sprintf(temp, "_");
-+ if (! ((i+1)%frame_cols))
-+ temp += sprintf(temp, "|\n");
-+ }
-+
-+ temp += sprintf(temp, " +");
-+ for (i = 0; i < frame_cols; ++i)
-+ temp += sprintf(temp, "-");
-+ temp += sprintf(temp, "+\n");
-+ up(&p->lcd_sem);
-+
-+ return (temp-buffer);
-+}
-+
-+static int proc_charmap_read(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+ struct lcd_struct *p = (struct lcd_struct *)data;
-+ unsigned char *charmap;
-+ unsigned int i;
-+
-+ down(&p->lcd_sem);
-+ charmap = p->driver->charmap;
-+ temp += sprintf(temp, "static unsigned char charmap[] = {");
-+ for (i = 0; i < 255; ++i) {
-+ if (! (i & 7)) {
-+ temp += sprintf(temp, "\n");
-+ if (! (i & 31))
-+ temp += sprintf(temp, "\n/* %d - %d */\n", i, i+31);
-+ }
-+ temp += sprintf(temp, "0x%.2x, ", *charmap++);
-+ }
-+ temp += sprintf(temp, "0x%.2x\n\n};\n", *charmap);
-+ up(&p->lcd_sem);
-+
-+ return (temp-buffer);
-+}
-+
-+static int proc_registered_drivers(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
-+{
-+ char *temp = buffer;
-+ struct list_head *entry;
-+
-+ down(&drivers_sem);
-+ temp += sprintf(temp, "Registered drivers:\n");
-+ list_for_each(entry, &lcd_drivers) {
-+ struct lcd_struct *p = list_entry(entry, struct lcd_struct, lcd_list);
-+
-+ down(&p->lcd_sem);
-+ temp += sprintf(temp, "%3d %s\n", p->par->minor, p->par->name);
-+ up(&p->lcd_sem);
-+ }
-+ up(&drivers_sem);
-+
-+ return (temp-buffer);
-+}
-+
-+static void create_driver_proc_entries(struct lcd_struct *p)
-+{
-+ struct proc_dir_entry *driver_proc_root = p->driver->driver_proc_root;
-+ int proc_level = 0;
-+
-+ SET_PROC_LEVEL(p, proc_level);
-+ if (create_proc_read_entry("framebuffer", 0, driver_proc_root, proc_fb_read, p) == NULL) {
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/%s/framebuffer\n", p->par->name);
-+ return;
-+ }
-+ SET_PROC_LEVEL(p, ++proc_level);
-+ if (create_proc_read_entry("display", 0, driver_proc_root, proc_display_read, p) == NULL) {
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/%s/display\n", p->par->name);
-+ return;
-+ }
-+ SET_PROC_LEVEL(p, ++proc_level);
-+ if (create_proc_read_entry("charmap.h", 0, driver_proc_root, proc_charmap_read, p) == NULL) {
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/%s/charmap.h\n", p->par->name);
-+ return;
-+ }
-+ SET_PROC_LEVEL(p, ++proc_level);
-+}
-+
-+static void remove_driver_proc_entries(struct lcd_struct *p)
-+{
-+ struct proc_dir_entry *driver_proc_root = p->driver->driver_proc_root;
-+
-+ switch (PROC_LEVEL(p)) {
-+ case 3:
-+ remove_proc_entry("charmap.h", driver_proc_root);
-+ case 2:
-+ remove_proc_entry("display", driver_proc_root);
-+ case 1:
-+ remove_proc_entry("framebuffer", driver_proc_root);
-+ }
-+ SET_PROC_LEVEL(p, 0);
-+}
-+#endif
-+
-+
-+
-+
-+
-+/*****************************
-+ * Low level file operations *
-+ *****************************/
-+static ssize_t do_lcd_read(struct lcd_struct *p, void *buffer, size_t length)
-+{
-+ unsigned int i;
-+ unsigned short tmp;
-+
-+ if (! p->refcount)
-+ return (-ENXIO);
-+
-+ if (! p->driver->read_char) {
-+ printk(KERN_NOTICE "LCD: driver %s doesn't support reading\n", p->par->name);
-+ return (-ENOSYS);
-+ }
-+
-+ if (test_bit(WITH_ATTR, &p->struct_flags))
-+ for (i = 0; i < length; ++i) {
-+ read_data(p, &tmp);
-+ ((unsigned short *)buffer)[i] = tmp;
-+ }
-+ else
-+ for (i = 0; i < length; ++i) {
-+ read_data(p, &tmp);
-+ ((unsigned char *)buffer)[i] = tmp & 0xff;
-+ }
-+
-+ return (length);
-+}
-+
-+static ssize_t do_lcd_write(struct lcd_struct *p, const void *buffer, size_t length)
-+{
-+ unsigned int i;
-+
-+ if (! p->refcount)
-+ return (-ENXIO);
-+
-+ if (test_bit(WITH_ATTR, &p->struct_flags))
-+ for (i = 0; i < length; ++i)
-+ handle_input(p, ((const unsigned short *)buffer)[i]);
-+ else
-+ for (i = 0; i < length; ++i)
-+ handle_input(p, (p->attr << 8) | ((const unsigned char *)buffer)[i]);
-+
-+ return (length);
-+}
-+
-+static int do_lcd_open(struct lcd_struct *p)
-+{
-+ if (! p->refcount) {
-+ if (p->driver->driver_module) {
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+ if (! try_module_get(p->driver->driver_module))
-+ return (-EBUSY);
-+#else
-+ if (__MOD_IN_USE(p->driver->driver_module))
-+ return (-EBUSY);
-+
-+ __MOD_INC_USE_COUNT(p->driver->driver_module);
-+#endif
-+ }
-+ }
-+
-+ ++p->refcount;
-+
-+ return (0);
-+}
-+
-+static int do_lcd_release(struct lcd_struct *p)
-+{
-+ if (! p->refcount)
-+ return (0);
-+
-+ if (p->refcount == 1) {
-+ if (p->driver->driver_module)
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+ module_put(p->driver->driver_module);
-+#else
-+ __MOD_DEC_USE_COUNT(p->driver->driver_module);
-+#endif
-+ }
-+
-+ --p->refcount;
-+
-+ return (0);
-+}
-+
-+static int cgram_ioctl(struct lcd_struct *p, unsigned int cmd, unsigned char *argp)
-+{
-+ struct lcd_parameters *par = p->par;
-+ unsigned int length = par->cgram_bytes;
-+ unsigned char index = argp[0];
-+ unsigned char *buffer = argp+1;
-+ unsigned char *cgram_buffer = p->cgram_buffer+(index-par->cgram_char0)*length;
-+
-+ if (index < par->cgram_char0 || index >= par->cgram_char0+par->cgram_chars)
-+ return (-EINVAL);
-+
-+ if (cmd == LCDL_SET_CGRAM_CHAR) {
-+ if (! p->driver->write_cgram_char) {
-+ printk(KERN_ERR "LCD: %s: missing function to write to CGRAM\n", p->par->name);
-+ return (-ENOSYS);
-+ }
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_from_user(cgram_buffer, buffer, length))
-+ return (-EFAULT);
-+ } else
-+ memcpy(cgram_buffer, buffer, length);
-+ write_cgram(p, index, cgram_buffer);
-+ } else {
-+ if (! p->driver->read_cgram_char) {
-+ printk(KERN_ERR "LCD: %s: missing function to read from CGRAM or unable to read\n", p->par->name);
-+ return (-ENOSYS);
-+ }
-+ read_cgram(p, index, cgram_buffer);
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_to_user(buffer, cgram_buffer, length))
-+ return (-EFAULT);
-+ } else
-+ memcpy(buffer, cgram_buffer, length);
-+ }
-+
-+ return (0);
-+}
-+
-+static int do_lcd_ioctl(struct lcd_struct *p, unsigned int cmd, unsigned long arg)
-+{
-+ int i;
-+ struct lcd_driver *driver = p->driver;
-+ struct lcd_parameters *par = p->par;
-+ unsigned char *argp = (unsigned char *)arg;
-+
-+ if (! p->refcount)
-+ return (-ENXIO);
-+
-+ switch (cmd) {
-+ case LCDL_SET_PARAM:
-+ if ((i = cleanup_driver(p)))
-+ return (i);
-+ i = par->minor;
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_from_user(par, argp, sizeof(struct lcd_parameters)))
-+ return (-EFAULT);
-+ } else
-+ memcpy(par, argp, sizeof(struct lcd_parameters));
-+ par->minor = i;
-+ return (init_driver(p));
-+
-+ case LCDL_GET_PARAM:
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_to_user(argp, par, sizeof(struct lcd_parameters)))
-+ return (-EFAULT);
-+ } else
-+ memcpy(argp, par, sizeof(struct lcd_parameters));
-+ return (0);
-+
-+ case LCDL_RESET_CHARMAP:
-+ for (i = 0; i < 256; ++i)
-+ driver->charmap[i] = i;
-+ return (0);
-+
-+ case LCDL_CHARSUBST:
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ get_user(i, argp);
-+ get_user(driver->charmap[i], argp+1);
-+ } else {
-+ i = argp[0];
-+ driver->charmap[i] = argp[1];
-+ }
-+ return (0);
-+
-+ case LCDL_SAVE_CHARMAP:
-+ memcpy(p->s_charmap, driver->charmap, 256);
-+ return (0);
-+
-+ case LCDL_RESTORE_CHARMAP:
-+ memcpy(driver->charmap, p->s_charmap, 256);
-+ return (0);
-+
-+ case LCDL_SWAP_CHARMAP:
-+ {
-+ unsigned char *tmp;
-+
-+ tmp = driver->charmap;
-+ driver->charmap = p->s_charmap;
-+ p->s_charmap = tmp;
-+ }
-+ return (0);
-+
-+ case LCDL_RAW_MODE:
-+ if (arg) {
-+ clear_bit(NEED_WRAP, &p->struct_flags);
-+ clear_bit(DECIM, &p->struct_flags);
-+ clear_bit(DECAWM, &p->struct_flags);
-+ SET_INPUT_STATE(p, RAW);
-+ } else {
-+ set_bit(DECAWM, &p->struct_flags);
-+ SET_INPUT_STATE(p, NORMAL);
-+ }
-+ return (0);
-+
-+ case LCDL_CLEAR_DISP:
-+ ff(p);
-+ return (0);
-+
-+ case LCDL_SET_CGRAM_CHAR:
-+ case LCDL_GET_CGRAM_CHAR:
-+ if (p->cgram_buffer)
-+ return (cgram_ioctl(p, cmd, argp));
-+ else
-+ printk(KERN_NOTICE "LCD: driver %s does not support CGRAM chars\n", par->name);
-+ return (0);
-+
-+ case LCDL_SET_CHARMAP:
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_from_user(driver->charmap, argp, 256))
-+ return (-EFAULT);
-+ } else
-+ memcpy(driver->charmap, argp, 256);
-+ return (0);
-+
-+ case LCDL_GET_CHARMAP:
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_to_user(argp, driver->charmap, 256))
-+ return (-EFAULT);
-+ } else
-+ memcpy(argp, driver->charmap, 256);
-+ return (0);
-+
-+ case LCDL_MEMSET:
-+ case LCDL_MEMMOVE:
-+ {
-+ int buf[3];
-+
-+ if (test_bit(USER_SPACE, &p->struct_flags)) {
-+ if (copy_from_user(buf, argp, sizeof(buf)))
-+ return (-EFAULT);
-+ } else
-+ memcpy(buf, argp, sizeof(buf));
-+
-+ if (cmd == LCDL_MEMSET)
-+ lcd_memset(p, buf[0], buf[1], buf[2]);
-+ else
-+ lcd_memmove(p, buf[0], buf[1], buf[2]);
-+
-+ return (0);
-+ }
-+
-+ default:
-+ if (driver->handle_custom_ioctl)
-+ return (driver->handle_custom_ioctl(cmd, arg, test_bit(USER_SPACE, &p->struct_flags)));
-+ }
-+
-+ return (-ENOIOCTLCMD);
-+}
-+
-+
-+
-+
-+
-+/**************************************************
-+ * Kernel register/unregister lcd driver routines *
-+ **************************************************/
-+/*
-+ * Find a driver in lcd_drivers linked list
-+ */
-+static struct lcd_struct *find_lcd_struct(unsigned short minor)
-+{
-+ struct list_head *entry;
-+
-+ list_for_each(entry, &lcd_drivers) {
-+ struct lcd_struct *p = list_entry(entry, struct lcd_struct, lcd_list);
-+
-+ if (p->par->minor == minor)
-+ return (p);
-+ }
-+
-+ return (NULL);
-+}
-+
-+static void list_add_sorted(struct list_head *new)
-+{
-+ struct list_head *entry;
-+ unsigned short new_minor = (list_entry(new, struct lcd_struct, lcd_list))->par->minor;
-+
-+ list_for_each(entry, &lcd_drivers) {
-+ struct lcd_struct *p = list_entry(entry, struct lcd_struct, lcd_list);
-+
-+ if (p->par->minor > new_minor)
-+ break;
-+ }
-+ list_add_tail(new, entry);
-+}
-+
-+/* Exported function */
-+int lcd_register_driver(struct lcd_driver *driver, struct lcd_parameters *par)
-+{
-+ int ret;
-+ struct lcd_struct *p;
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
-+ struct device *lcd_device;
-+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+ struct class_device *lcd_class_device;
-+#endif
-+
-+ if (! driver || ! par || par->minor >= minors)
-+ return (-EINVAL);
-+ if (! driver->write_char || ! driver->init_port || ! driver->cleanup_port) {
-+ printk(KERN_ERR "LCD: missing functions\n");
-+ return (-EINVAL);
-+ }
-+
-+ down(&drivers_sem);
-+
-+ if (find_lcd_struct(par->minor)) {
-+ up(&drivers_sem);
-+ return (-EBUSY);
-+ }
-+
-+ if ((p = (struct lcd_struct *)kmalloc(sizeof(struct lcd_struct), GFP_KERNEL)) == NULL) {
-+ printk(KERN_ERR "LCD: memory allocation failed (kmalloc)\n");
-+ up(&drivers_sem);
-+ return (-ENOMEM);
-+ }
-+ memset(p, 0, sizeof(struct lcd_struct));
-+
-+ p->driver = driver;
-+ p->par = par;
-+ p->refcount = 0;
-+ SET_INIT_LEVEL(p, 0);
-+ SET_INPUT_STATE(p, NORMAL);
-+ set_bit(DECAWM, &p->struct_flags);
-+ set_bit(INC_CURS_POS, &p->struct_flags);
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
-+ lcd_device = device_create(lcd_linux_class, NULL, MKDEV(major, par->minor), "%s", par->name);
-+ if (IS_ERR(lcd_device)) {
-+ kfree(p);
-+ up(&drivers_sem);
-+ return (PTR_ERR(lcd_device));
-+ }
-+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 15)
-+ lcd_class_device = class_device_create(lcd_linux_class, NULL, MKDEV(major, par->minor), NULL, "%s", par->name);
-+ if (IS_ERR(lcd_class_device)) {
-+ kfree(p);
-+ up(&drivers_sem);
-+ return (PTR_ERR(lcd_class_device));
-+ }
-+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+ lcd_class_device = class_device_create(lcd_linux_class, MKDEV(major, par->minor), NULL, "%s", par->name);
-+ if (IS_ERR(lcd_class_device)) {
-+ kfree(p);
-+ up(&drivers_sem);
-+ return (PTR_ERR(lcd_class_device));
-+ }
-+#endif
-+
-+#ifdef USE_PROC
-+ if (lcd_proc_root && (driver->driver_proc_root = proc_mkdir(par->name, lcd_proc_root)) == NULL)
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/%s/\n", par->name);
-+#endif
-+
-+ if ((ret = init_driver(p))) {
-+#ifdef USE_PROC
-+ if (driver->driver_proc_root)
-+ remove_proc_entry(p->par->name, lcd_proc_root);
-+#endif
-+ kfree(p);
-+ up(&drivers_sem);
-+ return (ret);
-+ }
-+
-+ init_MUTEX(&p->lcd_sem);
-+
-+ list_add_sorted(&p->lcd_list);
-+
-+ up(&drivers_sem);
-+
-+#ifdef MODULE
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+ try_module_get(THIS_MODULE);
-+#else
-+ MOD_INC_USE_COUNT;
-+#endif
-+#endif
-+
-+ return (0);
-+}
-+EXPORT_SYMBOL(lcd_register_driver);
-+
-+/* Exported function */
-+int lcd_unregister_driver(struct lcd_driver *driver, struct lcd_parameters *par)
-+{
-+ int ret;
-+ struct lcd_struct *p;
-+
-+ if (! driver || ! par || par->minor >= minors)
-+ return (-EINVAL);
-+
-+ down(&drivers_sem);
-+
-+ if ((p = find_lcd_struct(par->minor)) == NULL || p->driver != driver) {
-+ printk(KERN_ERR "LCD: driver not found; lcd_unregister_driver failed\n");
-+ up(&drivers_sem);
-+ return (-ENODEV);
-+ }
-+
-+ down(&p->lcd_sem);
-+
-+ if (p->refcount) {
-+ printk(KERN_ERR "LCD: driver busy; lcd_unregister_driver failed\n");
-+ up(&p->lcd_sem);
-+ up(&drivers_sem);
-+ return (-EBUSY);
-+ }
-+
-+ if ((ret = cleanup_driver(p))) {
-+ up(&p->lcd_sem);
-+ up(&drivers_sem);
-+ return (ret);
-+ }
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
-+ device_destroy(lcd_linux_class, MKDEV(major, par->minor));
-+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+ class_device_destroy(lcd_linux_class, MKDEV(major, par->minor));
-+#endif
-+
-+#ifdef USE_PROC
-+ if (p->driver->driver_proc_root)
-+ remove_proc_entry(p->par->name, lcd_proc_root);
-+#endif
-+
-+ list_del(&p->lcd_list);
-+ kfree(p);
-+
-+ up(&drivers_sem);
-+
-+#ifdef MODULE
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-+ module_put(THIS_MODULE);
-+#else
-+ MOD_DEC_USE_COUNT;
-+#endif
-+#endif
-+
-+ return (0);
-+}
-+EXPORT_SYMBOL(lcd_unregister_driver);
-+
-+
-+
-+
-+
-+/************************
-+ * Kernel I/O interface *
-+ ************************/
-+/* Exported function */
-+int lcd_open(unsigned short minor, struct lcd_struct **pp)
-+{
-+ int ret;
-+ struct lcd_struct *p;
-+
-+ down(&drivers_sem);
-+
-+ if (minor >= minors || (*pp = p = find_lcd_struct(minor)) == NULL) {
-+ printk(KERN_ERR "LCD: lcd_open failed. Device not found.\n");
-+ up(&drivers_sem);
-+ return (-ENODEV);
-+ }
-+
-+ down(&p->lcd_sem);
-+ up(&drivers_sem);
-+
-+ ret = do_lcd_open(p);
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+EXPORT_SYMBOL(lcd_open);
-+
-+/* Exported function */
-+int lcd_close(struct lcd_struct **pp)
-+{
-+ int ret;
-+ struct lcd_struct *p;
-+
-+ if (! pp || ! (p = *pp)) {
-+ printk(KERN_ERR "LCD: NULL pointer in lcd_close\n");
-+ return (-ENODEV);
-+ }
-+
-+ down(&p->lcd_sem);
-+
-+ if (! (ret = do_lcd_release(p)))
-+ *pp = NULL;
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+EXPORT_SYMBOL(lcd_close);
-+
-+static inline loff_t offset_to_row_col(struct lcd_struct *p, loff_t offset)
-+{
-+ unsigned long _offset = offset;
-+ unsigned int vs_cols = p->par->vs_cols;
-+
-+ gotoxy(p, _offset%vs_cols, _offset/vs_cols);
-+
-+ return ((p->row*vs_cols)+p->col);
-+}
-+
-+/* Exported function */
-+ssize_t lcd_read(struct lcd_struct *p, void *bufp, size_t length, loff_t offset, unsigned int with_attr)
-+{
-+ ssize_t ret = 0;
-+
-+ if (! p) {
-+ printk(KERN_ERR "LCD: NULL pointer in lcd_read\n");
-+ return (-ENODEV);
-+ }
-+ if (! bufp)
-+ return (-EFAULT);
-+ if (offset < 0 || offset >= p->fb_size)
-+ return (-EINVAL);
-+
-+ if (length+offset > p->fb_size)
-+ length = p->fb_size-offset;
-+
-+ if (with_attr)
-+ set_bit(WITH_ATTR, &p->struct_flags);
-+
-+ offset_to_row_col(p, offset);
-+ ret = do_lcd_read(p, bufp, length);
-+
-+ if (with_attr)
-+ clear_bit(WITH_ATTR, &p->struct_flags);
-+
-+ return (ret);
-+}
-+EXPORT_SYMBOL(lcd_read);
-+
-+/* Exported function */
-+ssize_t lcd_write(struct lcd_struct *p, const void *bufp, size_t length, loff_t offset, unsigned int with_attr)
-+{
-+ ssize_t ret;
-+
-+ if (! p) {
-+ printk(KERN_ERR "LCD: NULL pointer in lcd_write\n");
-+ return (-ENODEV);
-+ }
-+ if (! bufp)
-+ return (-EFAULT);
-+ if (offset < 0 || offset >= p->fb_size)
-+ return (-EINVAL);
-+
-+ if (with_attr)
-+ set_bit(WITH_ATTR, &p->struct_flags);
-+
-+ offset_to_row_col(p, offset);
-+ ret = do_lcd_write(p, bufp, length);
-+
-+ if (with_attr)
-+ clear_bit(WITH_ATTR, &p->struct_flags);
-+
-+ return (ret);
-+}
-+EXPORT_SYMBOL(lcd_write);
-+
-+/* Exported function */
-+int lcd_ioctl(struct lcd_struct *p, unsigned int cmd, ...)
-+{
-+ int ret;
-+ unsigned long arg;
-+ va_list ap;
-+
-+ if (! p) {
-+ printk(KERN_ERR "LCD: NULL pointer in lcd_ioctl\n");
-+ return (-ENODEV);
-+ }
-+
-+ down(&p->lcd_sem);
-+ va_start(ap, cmd);
-+ arg = va_arg(ap, unsigned long);
-+ ret = do_lcd_ioctl(p, cmd, arg);
-+ va_end(ap);
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+EXPORT_SYMBOL(lcd_ioctl);
-+
-+
-+
-+
-+
-+/*******************
-+ * File operations *
-+ *******************/
-+static loff_t lcd_fops_llseek(struct file *filp, loff_t offset, int orig)
-+{
-+ struct lcd_struct *p;
-+
-+ if (! (p = filp->private_data))
-+ return (-ENODEV);
-+
-+ down(&p->lcd_sem);
-+
-+ switch (orig) {
-+ case 0:
-+ filp->f_pos = offset;
-+ break;
-+
-+ case 1:
-+ filp->f_pos += offset;
-+ break;
-+
-+ default:
-+ up(&p->lcd_sem);
-+ return (-EINVAL); /* SEEK_END not supported */
-+ }
-+
-+ filp->f_pos = offset_to_row_col(p, filp->f_pos);
-+
-+ up(&p->lcd_sem);
-+
-+ return (filp->f_pos);
-+}
-+
-+static ssize_t lcd_fops_read(struct file *filp, char *buffer, size_t length, loff_t *offp)
-+{
-+ ssize_t ret = 0;
-+ char *bufp = buffer;
-+ struct lcd_struct *p;
-+
-+ if (! bufp)
-+ return (-EFAULT);
-+ if (! (p = filp->private_data))
-+ return (-ENODEV);
-+
-+ down(&p->lcd_sem);
-+
-+ if (*offp < 0 || *offp >= p->fb_size) {
-+ up(&p->lcd_sem);
-+ return (-EINVAL);
-+ }
-+
-+ if (length+(*offp) > p->fb_size)
-+ length = p->fb_size-(*offp);
-+
-+ while (length) {
-+ ret = (length > FLIP_BUF_SIZE ? FLIP_BUF_SIZE : length);
-+ if ((ret = do_lcd_read(p, p->flip_buf, ret)) < 0)
-+ break;
-+ *offp = (p->row*p->par->vs_cols)+p->col;
-+ if (copy_to_user(bufp, p->flip_buf, ret)) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ length -= ret;
-+ bufp += ret;
-+ ret = bufp-buffer;
-+ if (length)
-+ schedule();
-+ }
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+
-+static ssize_t lcd_fops_write(struct file *filp, const char *buffer, size_t length, loff_t *offp)
-+{
-+ ssize_t ret = 0;
-+ const char *bufp = buffer;
-+ struct lcd_struct *p;
-+
-+ if (! bufp)
-+ return (-EFAULT);
-+ if (! (p = filp->private_data))
-+ return (-ENODEV);
-+
-+ down(&p->lcd_sem);
-+
-+ if (*offp < 0 || *offp >= p->fb_size) {
-+ up(&p->lcd_sem);
-+ return (-EINVAL);
-+ }
-+
-+ while (length) {
-+ ret = (length > FLIP_BUF_SIZE ? FLIP_BUF_SIZE : length);
-+ if (copy_from_user(p->flip_buf, bufp, ret)) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ if ((ret = do_lcd_write(p, p->flip_buf, ret)) < 0)
-+ break;
-+ *offp = (p->row*p->par->vs_cols)+p->col;
-+ length -= ret;
-+ bufp += ret;
-+ ret = bufp-buffer;
-+ if (length)
-+ schedule();
-+ }
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+
-+static int lcd_fops_open(struct inode *inop, struct file *filp)
-+{
-+ unsigned short minor;
-+ int ret;
-+ struct lcd_struct *p;
-+
-+ down(&drivers_sem);
-+
-+ if ((minor = MINOR(inop->i_rdev)) >= minors || (filp->private_data = p = find_lcd_struct(minor)) == NULL) {
-+ up(&drivers_sem);
-+ return (-ENODEV);
-+ }
-+
-+ down(&p->lcd_sem);
-+ up(&drivers_sem);
-+
-+ ret = do_lcd_open(p);
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+
-+static int lcd_fops_release(struct inode *inop, struct file *filp)
-+{
-+ struct lcd_struct *p;
-+ int ret;
-+
-+ if (! (p = filp->private_data))
-+ return (-ENODEV);
-+
-+ down(&p->lcd_sem);
-+
-+ if (! (ret = do_lcd_release(p)))
-+ filp->private_data = NULL;
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+
-+static int lcd_fops_ioctl(struct inode *inop, struct file *filp, unsigned int cmd, unsigned long arg)
-+{
-+ struct lcd_struct *p;
-+ int ret;
-+
-+ if (! (p = filp->private_data))
-+ return (-ENODEV);
-+
-+ down(&p->lcd_sem);
-+
-+ set_bit(USER_SPACE, &p->struct_flags);
-+ ret = do_lcd_ioctl(p, cmd, arg);
-+ clear_bit(USER_SPACE, &p->struct_flags);
-+
-+ up(&p->lcd_sem);
-+
-+ return (ret);
-+}
-+
-+static struct file_operations lcd_linux_fops = {
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0)
-+ .owner = THIS_MODULE,
-+#endif
-+ .llseek = lcd_fops_llseek,
-+ .read = lcd_fops_read,
-+ .write = lcd_fops_write,
-+ .open = lcd_fops_open,
-+ .release = lcd_fops_release,
-+ .ioctl = lcd_fops_ioctl,
-+};
-+
-+
-+
-+
-+
-+/********************************
-+ * Init/Cleanup driver routines *
-+ ********************************/
-+static int do_init_driver(struct lcd_struct *p)
-+{
-+ int ret, init_level;
-+ struct lcd_driver *driver = p->driver;
-+ struct lcd_parameters *par = p->par;
-+ unsigned int frame_rows = par->cntr_rows*par->num_cntr;
-+ unsigned int frame_cols = par->cntr_cols;
-+
-+ switch ((init_level = INIT_LEVEL(p))) {
-+ case 0:
-+ if (frame_rows == 0 || frame_cols == 0 || ! par->name) {
-+ printk(KERN_ERR "LCD: wrong lcd parameters\n");
-+ return (-EINVAL);
-+ }
-+ if (driver->validate_driver) {
-+ if ((ret = driver->validate_driver()) < 0) {
-+ printk(KERN_ERR "LCD: validate_driver failed\n");
-+ return (-EINVAL);
-+ } else if (ret > 0) {
-+ set_bit(CAN_DO_COLOR, &p->struct_flags);
-+ p->defcolor = 0x07;
-+ p->ulcolor = 0x0f;
-+ p->halfcolor = 0x08;
-+ }
-+ }
-+ default_attr(p);
-+ update_attr(p);
-+ p->frame_size = frame_rows*frame_cols;
-+ if (par->vs_rows < frame_rows)
-+ par->vs_rows = frame_rows;
-+ if (par->vs_cols < frame_cols)
-+ par->vs_cols = frame_cols;
-+ p->fb_size = par->vs_rows*par->vs_cols;
-+
-+ ret = sizeof(short)*p->fb_size;
-+ ret += sizeof(short)*p->frame_size;
-+ ret += FLIP_BUF_SIZE;
-+ ret += (p->driver->charmap ? 256 : 512);
-+ ret += par->cgram_chars*par->cgram_bytes;
-+ if ((p->fb = (unsigned short *)vmalloc(ret)) == NULL) {
-+ printk(KERN_ERR "LCD: memory allocation failed (vmalloc)\n");
-+ return (-ENOMEM);
-+ }
-+ __memset_short(p->fb, p->erase_char, p->fb_size+p->frame_size);
-+
-+ p->display = p->fb+p->fb_size;
-+ p->flip_buf = (unsigned char *)(p->display+p->frame_size);
-+
-+ if (! p->driver->charmap) {
-+ set_bit(NULL_CHARMAP, &p->struct_flags);
-+ p->driver->charmap = p->flip_buf+FLIP_BUF_SIZE;
-+ for (ret = 0; ret < 256; ++ret)
-+ p->driver->charmap[ret] = ret;
-+ p->s_charmap = p->driver->charmap+256;
-+ } else
-+ p->s_charmap = p->flip_buf+FLIP_BUF_SIZE;
-+ memset(p->s_charmap, 0, 256);
-+
-+ if (par->cgram_chars*par->cgram_bytes) {
-+ p->cgram_buffer = p->s_charmap+256;
-+ memset(p->cgram_buffer, 0, par->cgram_chars*par->cgram_bytes);
-+ } else
-+ p->cgram_buffer = NULL;
-+
-+ p->frame_base = 0;
-+ p->row = p->col = 0;
-+ p->top = 0;
-+ p->bot = par->vs_rows;
-+ SET_INIT_LEVEL(p, ++init_level);
-+
-+ case 1:
-+ /* Initialize the communication port */
-+ if ((ret = driver->init_port())) {
-+ printk(KERN_ERR "LCD: failure while initializing the communication port\n");
-+ return (ret);
-+ }
-+ SET_INIT_LEVEL(p, ++init_level);
-+
-+ case 2:
-+ /* Initialize LCD display */
-+ if (driver->init_display && (ret = driver->init_display())) {
-+ printk(KERN_ERR "LCD: failure while initializing the display\n");
-+ return (ret);
-+ }
-+
-+#ifdef USE_PROC
-+ /* Create entries in /proc/lcd/"driver" */
-+ if (driver->driver_proc_root)
-+ create_driver_proc_entries(p);
-+#endif
-+ SET_INIT_LEVEL(p, ++init_level);
-+ }
-+
-+ return (0);
-+}
-+
-+static int do_cleanup_driver(struct lcd_struct *p)
-+{
-+ int ret, init_level;
-+ struct lcd_driver *driver = p->driver;
-+
-+ switch ((init_level = INIT_LEVEL(p))) {
-+ case 3:
-+#ifdef USE_PROC
-+ if (driver->driver_proc_root)
-+ remove_driver_proc_entries(p);
-+#endif
-+ if (driver->cleanup_display && (ret = driver->cleanup_display())) {
-+ printk(KERN_ERR "LCD: failure while cleaning the display\n");
-+ return (ret);
-+ }
-+ SET_INIT_LEVEL(p, --init_level);
-+
-+ case 2:
-+ if ((ret = driver->cleanup_port())) {
-+ printk(KERN_ERR "LCD: failure while cleaning the communication port\n");
-+ return (ret);
-+ }
-+ SET_INIT_LEVEL(p, --init_level);
-+
-+ case 1:
-+ if (test_bit(NULL_CHARMAP, &p->struct_flags)) {
-+ p->driver->charmap = NULL;
-+ clear_bit(NULL_CHARMAP, &p->struct_flags);
-+ }
-+ vfree(p->fb);
-+ p->fb = NULL;
-+ SET_INIT_LEVEL(p, --init_level);
-+ }
-+
-+ return (0);
-+}
-+
-+static int init_driver(struct lcd_struct *p)
-+{
-+ int ret;
-+
-+ if ((ret = do_init_driver(p))) {
-+ do_cleanup_driver(p);
-+ printk(KERN_ERR "LCD: init_driver failed\n");
-+ }
-+
-+ return (ret);
-+}
-+
-+static int cleanup_driver(struct lcd_struct *p)
-+{
-+ int ret;
-+
-+ if ((ret = do_cleanup_driver(p))) {
-+ do_init_driver(p);
-+ printk(KERN_ERR "LCD: cleanup_driver failed\n");
-+ }
-+
-+ return (ret);
-+}
-+
-+
-+
-+
-+
-+/********************************
-+ * Init/Cleanup module routines *
-+ ********************************/
-+static int __init lcd_linux_init_module(void)
-+{
-+ int ret;
-+
-+ if (! minors || minors > 256)
-+ minors = LCD_MINORS;
-+
-+ init_MUTEX(&drivers_sem);
-+
-+ if ((ret = register_chrdev(major, LCD_LINUX_STRING, &lcd_linux_fops)) < 0) {
-+ printk(KERN_ERR "LCD: register_chrdev failed\n");
-+ return (ret);
-+ }
-+ if (major == 0)
-+ major = ret;
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+ if (IS_ERR((lcd_linux_class = class_create(THIS_MODULE, "lcd")))) {
-+ ret = PTR_ERR(lcd_linux_class);
-+ unregister_chrdev(major, LCD_LINUX_STRING);
-+ return (ret);
-+ }
-+#endif
-+
-+#ifdef USE_PROC
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
-+ if ((lcd_proc_root = proc_mkdir("lcd", NULL)) == NULL)
-+#else
-+ if ((lcd_proc_root = proc_mkdir("lcd", &proc_root)) == NULL)
-+#endif
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/\n");
-+ else if (create_proc_read_entry("drivers", 0, lcd_proc_root, proc_registered_drivers, NULL) == NULL)
-+ printk(KERN_ERR "LCD: cannot create /proc/lcd/drivers\n");
-+#endif
-+
-+ printk(KERN_INFO "LCD: --> LCD-Linux " LCD_LINUX_VERSION " <--\n");
-+ printk(KERN_INFO "LCD: --> Mattia Jona-Lasinio <mjona@users.sourceforge.net> <--\n" );
-+
-+
-+ return (0);
-+}
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0)
-+static void __exit lcd_linux_cleanup_module(void)
-+#else
-+/* __exit is not defined in 2.2.x kernels */
-+static void lcd_linux_cleanup_module(void)
-+#endif
-+{
-+#ifdef USE_PROC
-+ if (lcd_proc_root) {
-+ remove_proc_entry("drivers", lcd_proc_root);
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
-+ remove_proc_entry("lcd", NULL);
-+#else
-+ remove_proc_entry("lcd", &proc_root);
-+#endif
-+ }
-+#endif
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
-+ class_destroy(lcd_linux_class);
-+#endif
-+
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
-+ unregister_chrdev(major, LCD_LINUX_STRING);
-+#else
-+ if (unregister_chrdev(major, LCD_LINUX_STRING))
-+ printk(KERN_ERR "LCD: unregister_chrdev failed\n");
-+#endif
-+}
-+
-+module_init(lcd_linux_init_module)
-+module_exit(lcd_linux_cleanup_module)
-Index: linux-2.6.30.9/include/linux/hd44780.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/include/linux/hd44780.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,46 @@
-+/* hd44780.h
-+ *
-+ *
-+ * LCD-Linux:
-+ * Driver for HD44780 compatible displays connected to the parallel port.
-+ *
-+ * HD44780 header file.
-+ *
-+ * Copyright (C) 2004 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ */
-+
-+#ifndef HD44780_H
-+#define HD44780_H
-+
-+#include <linux/lcd-linux.h>
-+
-+#define HD44780_VERSION LCD_LINUX_VERSION /* Version number */
-+#define HD44780_STRING "hd44780"
-+
-+#define HD44780_MINOR 0 /* Minor number for the hd44780 driver */
-+
-+
-+/* flags */
-+#define HD44780_CHECK_BF 0x00000001 /* Do busy flag checking */
-+#define HD44780_4BITS_BUS 0x00000002 /* Set the bus length to 4 bits */
-+#define HD44780_5X10_FONT 0x00000004 /* Use 5x10 dots fonts */
-+
-+/* IOCTLs */
-+#define HD44780_READ_AC _IOR(LCD_MAJOR, 0x00, unsigned char *)
-+
-+#endif /* HD44780 included */
-Index: linux-2.6.30.9/include/linux/lcd-linux.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/include/linux/lcd-linux.h 2009-11-24 02:01:42.000000000 +0100
-@@ -0,0 +1,151 @@
-+/* lcd-linux.h
-+ *
-+ *
-+ * Software layer to drive LCD displays under Linux.
-+ *
-+ * External interface header file.
-+ *
-+ * Copyright (C) 2005 - 2007 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
-+ *
-+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ */
-+
-+#ifndef LCD_LINUX_H
-+#define LCD_LINUX_H
-+
-+#ifndef LCD_LINUX_MAIN
-+#warning
-+#warning LCD-Linux is still in development stage and
-+#warning aims at speed and optimization. For these
-+#warning reasons there is no guarantee of backward
-+#warning compatibility between different LCD-Linux
-+#warning versions. Be sure to use the lcd-linux.h
-+#warning file of the same version as the module.
-+#warning "http://lcd-linux.sourceforge.net/"
-+#warning
-+#endif
-+
-+#define LCD_LINUX_VERSION "0.13.6" /* Version number */
-+#define LCD_LINUX_STRING "lcd"
-+
-+#define LCD_MAJOR 120 /* Major number for this device
-+ * Set this to 0 for dynamic allocation
-+ */
-+#define LCD_MINORS 8 /* Minors allocated for LCD-Linux*/
-+
-+#include <linux/types.h>
-+
-+#define str(s) #s
-+#define string(s) str(s)
-+
-+struct lcd_parameters {
-+ const char *name; /* Driver's name */
-+ unsigned long flags; /* Flags (see documentation) */
-+ unsigned short minor; /* Minor number of the char device */
-+ unsigned short tabstop; /* Tab character length */
-+ unsigned short num_cntr; /* Controllers to drive */
-+ unsigned short cntr_rows; /* Rows per controller */
-+ unsigned short cntr_cols; /* Display columns */
-+ unsigned short vs_rows; /* Virtual screen rows */
-+ unsigned short vs_cols; /* Virtual screen columns */
-+ unsigned short cgram_chars; /* Number of user definable characters */
-+ unsigned short cgram_bytes; /* Number of bytes required to define a
-+ * user definable character */
-+ unsigned char cgram_char0; /* Ascii of first user definable character */
-+};
-+
-+/* IOCTLs */
-+#include <asm/ioctl.h>
-+#define LCDL_SET_PARAM _IOW(LCD_MAJOR, 0x80, struct lcd_parameters *)
-+#define LCDL_GET_PARAM _IOR(LCD_MAJOR, 0x81, struct lcd_parameters *)
-+#define LCDL_CHARSUBST _IOW(LCD_MAJOR, 0x82, unsigned char *)
-+#define LCDL_RAW_MODE _IOW(LCD_MAJOR, 0x83, unsigned int)
-+#define LCDL_RESET_CHARMAP _IO(LCD_MAJOR, 0x84)
-+#define LCDL_SAVE_CHARMAP _IO(LCD_MAJOR, 0x85)
-+#define LCDL_RESTORE_CHARMAP _IO(LCD_MAJOR, 0x86)
-+#define LCDL_SWAP_CHARMAP _IO(LCD_MAJOR, 0x87)
-+#define LCDL_CLEAR_DISP _IO(LCD_MAJOR, 0x88)
-+#define LCDL_SET_CGRAM_CHAR _IOW(LCD_MAJOR, 0x89, unsigned char *)
-+#define LCDL_GET_CGRAM_CHAR _IOR(LCD_MAJOR, 0x8a, unsigned char *)
-+#define LCDL_SET_CHARMAP _IOW(LCD_MAJOR, 0x8b, unsigned char *)
-+#define LCDL_GET_CHARMAP _IOR(LCD_MAJOR, 0x8c, unsigned char *)
-+#define LCDL_MEMSET _IOW(LCD_MAJOR, 0x8d, unsigned int *)
-+#define LCDL_MEMMOVE _IOW(LCD_MAJOR, 0x8e, unsigned int *)
-+
-+
-+
-+#ifdef __KERNEL__ /* The rest is for kernel only */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+
-+
-+struct lcd_driver {
-+ void (*read_char)(unsigned int offset, unsigned short *data);
-+ void (*read_cgram_char)(unsigned char index, unsigned char *pixmap);
-+ void (*write_char)(unsigned int offset, unsigned short data);
-+ void (*write_cgram_char)(unsigned char index, unsigned char *pixmap);
-+ void (*clear_display)(void);
-+ void (*address_mode)(int mode);
-+ int (*validate_driver)(void);
-+ int (*init_display)(void);
-+ int (*cleanup_display)(void);
-+ int (*init_port)(void);
-+ int (*cleanup_port)(void);
-+ int (*handle_custom_char)(unsigned int data);
-+ int (*handle_custom_ioctl)(unsigned int cmd, unsigned long arg, unsigned int arg_in_userspace);
-+
-+ /* The character map to be used */
-+ unsigned char *charmap;
-+
-+ /* The root where the driver can create its own proc files.
-+ * Will be filled by the lcd-linux layer.
-+ */
-+ struct proc_dir_entry *driver_proc_root;
-+
-+ /* Set this field to 'driver_module_init' or call lcd_driver_setup
-+ * just before registering the driver with lcd_register_driver.
-+ */
-+ struct module *driver_module;
-+};
-+
-+#ifdef MODULE
-+#define driver_module_init THIS_MODULE
-+#else
-+#define driver_module_init NULL
-+#endif
-+
-+/* Always call lcd_driver_setup just before registering the driver
-+ * with lcd_register_driver.
-+ */
-+static inline void lcd_driver_setup(struct lcd_driver *p)
-+{
-+ p->driver_module = driver_module_init;
-+}
-+
-+/* External interface */
-+struct lcd_struct;
-+int lcd_register_driver(struct lcd_driver *drv, struct lcd_parameters *par);
-+int lcd_unregister_driver(struct lcd_driver *drv, struct lcd_parameters *par);
-+int lcd_open(unsigned short minor, struct lcd_struct **lcd);
-+int lcd_close(struct lcd_struct **lcd);
-+int lcd_ioctl(struct lcd_struct *lcd, unsigned int cmd, ...);
-+ssize_t lcd_write(struct lcd_struct *lcd, const void *buffer, size_t length, loff_t offset, unsigned int);
-+ssize_t lcd_read(struct lcd_struct *lcd, void *buffer, size_t length, loff_t offset, unsigned int);
-+
-+#endif /* __KERNEL__ */
-+
-+#endif /* External interface included */
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