[PATCH] USB: sisusb[vga] update

here is a new and extended version of the sisusbvga (previously: sisusb)
driver. The patch is against 2.6.13 and updates the driver to version 0.0.8.

Additions include complete VGA/EGA text console support and a build-in
display mode infrastructure for userland applications that don't know
 about the graphics internals.

Fixes include some BE/LE issues and a get/put_dev bug in the previous
version.

Other changes include a change of the module name from "sisusb" to
"sisusbvga". The previous one was too generic IMHO.

Please note that the patch also affects the Makefile in
drivers/video/console as the driver requires the VGA 8x16 font in case
the text console part is selected.

Heavily tested, as usual. Please apply.

One thing though: I already prepared for removal of the "mode" field and
the changed "name" field in the usb_class_driver structure. This will
perhaps need some refinement depending on whether you/Linus merge the
respective core changes before or after 2.6.14.
Signed-off-by: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/misc/sisusbvga/Kconfig

@@ -9,6 +9,38 @@ config USB_SISUSBVGA
 	  Note that this device requires a USB 2.0 host controller. It will not
 	  work with USB 1.x controllers.
 
-	  To compile this driver as a module, choose M here: the module will be
-	  called sisusb.  If unsure, say N.
+	  To compile this driver as a module, choose M here; the module will be
+	  called sisusbvga. If unsure, say N.
+
+config USB_SISUSBVGA_CON
+	bool "Text console and mode switching support" if USB_SISUSBVGA
+	depends on VT
+	select FONT_8x16
+	---help---
+	  Say Y here if you want a VGA text console via the USB dongle or
+	  want to support userland applications that utilize the driver's
+	  display mode switching capabilities.
+
+	  Note that this console supports VGA/EGA text mode only.
+
+	  By default, the console part of the driver will not kick in when
+	  the driver is initialized. If you want the driver to take over
+	  one or more of the consoles, you need to specify the number of
+	  the first and last consoles (starting at 1) as driver parameters.
+
+	  For example, if the driver is compiled as a module:
+
+	     modprobe sisusbvga first=1 last=5
+
+	  If you use hotplug, add this to your modutils config files with
+	  the "options" keyword, such as eg.
+
+	     options sisusbvga first=1 last=5
+
+	  If the driver is compiled into the kernel image, the parameters
+	  must be given in the kernel command like, such as
+
+	     sisusbvga.first=1 sisusbvga.last=5
+
+
 

drivers/usb/misc/sisusbvga/Makefile

@@ -2,5 +2,7 @@
 # Makefile for the sisusb driver (if driver is inside kernel tree).
 #
 
-obj-$(CONFIG_USB_SISUSBVGA) += sisusb.o
+obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga.o
+
+sisusbvga-objs := sisusb.o sisusb_init.o sisusb_con.o
 

drivers/usb/misc/sisusbvga/sisusb.h

@@ -46,15 +46,36 @@
 #endif
 #endif
 
+/* For older kernels, support for text consoles is by default
+ * off. To ensable text console support, change the following:
+ */
+#if 0
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,13)
+#define CONFIG_USB_SISUSBVGA_CON
+#endif
+#endif
+
 /* Version Information */
 
 #define SISUSB_VERSION		0
 #define SISUSB_REVISION 	0
-#define SISUSB_PATCHLEVEL	7
+#define SISUSB_PATCHLEVEL	8
+
+/* Include console and mode switching code? */
+
+#ifdef CONFIG_USB_SISUSBVGA_CON
+#define INCL_SISUSB_CON		1
+#endif
+
+#ifdef INCL_SISUSB_CON
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+#include "sisusb_struct.h"
+#endif
 
 /* USB related */
 
-#define SISUSB_MINOR	133		/* FIXME */
+#define SISUSB_MINOR		133	/* official */
 
 /* Size of the sisusb input/output buffers */
 #define SISUSB_IBUF_SIZE  0x01000
@@ -131,6 +152,26 @@ struct sisusb_usb_data {
 	unsigned char gfxinit;		/* graphics core initialized? */
 	unsigned short chipid, chipvendor;
 	unsigned short chiprevision;
+#ifdef INCL_SISUSB_CON
+	struct SiS_Private *SiS_Pr;
+	unsigned long scrbuf;
+	unsigned int scrbuf_size;
+	int haveconsole, con_first, con_last;
+	int havethisconsole[MAX_NR_CONSOLES];
+	int textmodedestroyed;
+	unsigned int sisusb_num_columns; /* real number, not vt's idea */
+	int cur_start_addr, con_rolled_over;
+	int sisusb_cursor_loc, bad_cursor_pos;
+	int sisusb_cursor_size_from;
+	int sisusb_cursor_size_to;
+	int current_font_height, current_font_512;
+	int font_backup_size, font_backup_height, font_backup_512;
+	char *font_backup;
+	int font_slot;
+	struct vc_data *sisusb_display_fg;
+	int is_gfx;
+	int con_blanked;
+#endif
 };
 
 #define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
@@ -249,7 +290,9 @@ struct sisusb_info {
 
 	__u32   sisusb_fbdevactive;	/* != 0 if framebuffer device active */
 
-	__u8	sisusb_reserved[32];	/* for future use */
+	__u32   sisusb_conactive;	/* != 0 if console driver active */
+
+	__u8	sisusb_reserved[28];	/* for future use */
 };
 
 struct sisusb_command {
@@ -270,9 +313,15 @@ struct sisusb_command {
 
 #define SUCMD_CLRSCR	0x07	/* data0:1:2 = length, data3 = address */
 
+#define SUCMD_HANDLETEXTMODE 0x08 /* Reset/destroy text mode */
+
+#define SUCMD_SETMODE	0x09	/* Set a display mode (data3 = SiS mode) */
+#define SUCMD_SETVESAMODE 0x0a	/* Set a display mode (data3 = VESA mode) */
+
 #define SISUSB_COMMAND		_IOWR(0xF3,0x3D,struct sisusb_command)
 #define SISUSB_GET_CONFIG_SIZE	_IOR(0xF3,0x3E,__u32)
 #define SISUSB_GET_CONFIG	_IOR(0xF3,0x3F,struct sisusb_info)
 
+
 #endif /* SISUSB_H */
 

drivers/usb/misc/sisusbvga/sisusb_struct.h

+/*
+ * General structure definitions for universal mode switching modules
+ *
+ * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
+ *
+ * If distributed as part of the Linux kernel, the following license terms
+ * apply:
+ *
+ * * 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 named License,
+ * * or 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
+ *
+ * Otherwise, the following license terms apply:
+ *
+ * * Redistribution and use in source and binary forms, with or without
+ * * modification, are permitted provided that the following conditions
+ * * are met:
+ * * 1) Redistributions of source code must retain the above copyright
+ * *    notice, this list of conditions and the following disclaimer.
+ * * 2) Redistributions in binary form must reproduce the above copyright
+ * *    notice, this list of conditions and the following disclaimer in the
+ * *    documentation and/or other materials provided with the distribution.
+ * * 3) The name of the author may not be used to endorse or promote products
+ * *    derived from this software without specific prior written permission.
+ * *
+ * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: 	Thomas Winischhofer <thomas@winischhofer.net>
+ *
+ */
+
+#ifndef _SISUSB_STRUCT_H_
+#define _SISUSB_STRUCT_H_
+
+struct SiS_St {
+	unsigned char	St_ModeID;
+	unsigned short	St_ModeFlag;
+	unsigned char	St_StTableIndex;
+	unsigned char	St_CRT2CRTC;
+	unsigned char	St_ResInfo;
+	unsigned char	VB_StTVFlickerIndex;
+	unsigned char	VB_StTVEdgeIndex;
+	unsigned char	VB_StTVYFilterIndex;
+	unsigned char	St_PDC;
+};
+
+struct SiS_StandTable
+{
+	unsigned char	CRT_COLS;
+	unsigned char	ROWS;
+	unsigned char	CHAR_HEIGHT;
+	unsigned short	CRT_LEN;
+	unsigned char	SR[4];
+	unsigned char	MISC;
+	unsigned char	CRTC[0x19];
+	unsigned char	ATTR[0x14];
+	unsigned char	GRC[9];
+};
+
+struct SiS_StResInfo_S {
+	unsigned short	HTotal;
+	unsigned short	VTotal;
+};
+
+struct SiS_Ext
+{
+	unsigned char	Ext_ModeID;
+	unsigned short	Ext_ModeFlag;
+	unsigned short	Ext_VESAID;
+	unsigned char	Ext_RESINFO;
+	unsigned char	VB_ExtTVFlickerIndex;
+	unsigned char	VB_ExtTVEdgeIndex;
+	unsigned char	VB_ExtTVYFilterIndex;
+	unsigned char	VB_ExtTVYFilterIndexROM661;
+	unsigned char	REFindex;
+	char		ROMMODEIDX661;
+};
+
+struct SiS_Ext2
+{
+	unsigned short	Ext_InfoFlag;
+	unsigned char	Ext_CRT1CRTC;
+	unsigned char	Ext_CRTVCLK;
+	unsigned char	Ext_CRT2CRTC;
+	unsigned char	Ext_CRT2CRTC_NS;
+	unsigned char	ModeID;
+	unsigned short	XRes;
+	unsigned short	YRes;
+	unsigned char	Ext_PDC;
+	unsigned char	Ext_FakeCRT2CRTC;
+	unsigned char	Ext_FakeCRT2Clk;
+};
+
+struct SiS_CRT1Table
+{
+	unsigned char	CR[17];
+};
+
+struct SiS_VCLKData
+{
+	unsigned char	SR2B,SR2C;
+	unsigned short	CLOCK;
+};
+
+struct SiS_ModeResInfo
+{
+	unsigned short	HTotal;
+	unsigned short	VTotal;
+	unsigned char	XChar;
+	unsigned char	YChar;
+};
+
+struct SiS_Private
+{
+	void *sisusb;
+
+	unsigned long IOAddress;
+
+	unsigned long SiS_P3c4;
+	unsigned long SiS_P3d4;
+	unsigned long SiS_P3c0;
+	unsigned long SiS_P3ce;
+	unsigned long SiS_P3c2;
+	unsigned long SiS_P3ca;
+	unsigned long SiS_P3c6;
+	unsigned long SiS_P3c7;
+	unsigned long SiS_P3c8;
+	unsigned long SiS_P3c9;
+	unsigned long SiS_P3cb;
+	unsigned long SiS_P3cc;
+	unsigned long SiS_P3cd;
+	unsigned long SiS_P3da;
+	unsigned long SiS_Part1Port;
+
+	unsigned char	SiS_MyCR63;
+	unsigned short	SiS_CRT1Mode;
+	unsigned short	SiS_ModeType;
+	unsigned short	SiS_SetFlag;
+
+	const struct SiS_StandTable	*SiS_StandTable;
+	const struct SiS_St		*SiS_SModeIDTable;
+	const struct SiS_Ext		*SiS_EModeIDTable;
+	const struct SiS_Ext2		*SiS_RefIndex;
+	const struct SiS_CRT1Table	*SiS_CRT1Table;
+	struct SiS_VCLKData		*SiS_VCLKData;
+	const struct SiS_ModeResInfo	*SiS_ModeResInfo;
+};
+
+#endif
+

drivers/video/console/Kconfig

@@ -137,7 +137,7 @@ config FONT_8x8
 
 config FONT_8x16
 	bool "VGA 8x16 font" if FONTS
-	depends on FRAMEBUFFER_CONSOLE || SGI_NEWPORT_CONSOLE=y
+	depends on FRAMEBUFFER_CONSOLE || SGI_NEWPORT_CONSOLE=y || USB_SISUSBVGA_CON
 	default y if !SPARC32 && !SPARC64 && !FONTS
 	help
 	  This is the "high resolution" font for the VGA frame buffer (the one

drivers/video/console/Makefile

@@ -33,6 +33,10 @@ endif
 
 obj-$(CONFIG_FB_STI)              += sticore.o font.o
 
+ifeq ($(CONFIG_USB_SISUSBVGA_CON),y)
+obj-$(CONFIG_USB_SISUSBVGA)           += font.o
+endif
+
 # Targets that kbuild needs to know about
 targets := promcon_tbl.c