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[Qemu-devel] [PATCH] Elo touchpad 10 bytes emulator v2
From: |
Ricardo Ribalda Delgado |
Subject: |
[Qemu-devel] [PATCH] Elo touchpad 10 bytes emulator v2 |
Date: |
Mon, 29 Mar 2010 20:48:11 +0200 |
New char device emulating an Elo serial touchpad.
-Emulate id and touch packets
-Absolute Output limited to 96-4000
---
Makefile.objs | 2 +-
hw/elo.c | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
hw/elo.h | 2 +
hw/serial.c | 2 +-
qemu-char.c | 3 +
qemu-options.hx | 5 ++-
6 files changed, 164 insertions(+), 3 deletions(-)
create mode 100644 hw/elo.c
create mode 100644 hw/elo.h
diff --git a/Makefile.objs b/Makefile.objs
index b73e2cb..07c2e68 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -75,7 +75,7 @@ common-obj-y += bt.o bt-host.o bt-vhci.o bt-l2cap.o bt-sdp.o
bt-hci.o bt-hid.o u
common-obj-y += bt-hci-csr.o
common-obj-y += buffered_file.o migration.o migration-tcp.o qemu-sockets.o
common-obj-y += qemu-char.o savevm.o #aio.o
-common-obj-y += msmouse.o ps2.o
+common-obj-y += msmouse.o ps2.o elo.o
common-obj-y += qdev.o qdev-properties.o
common-obj-y += qemu-config.o block-migration.o
diff --git a/hw/elo.c b/hw/elo.c
new file mode 100644
index 0000000..359333d
--- /dev/null
+++ b/hw/elo.c
@@ -0,0 +1,153 @@
+/*
+ * QEMU ELO Touchpad via serial port
+ *
+ * Copyright (c) 2010 Ricardo Ribalda: QTechnology http://qtec.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdlib.h>
+#include "../qemu-common.h"
+#include "../qemu-char.h"
+#include "../console.h"
+#include "elo.h"
+
+static void elo_event(void *opaque,
+ int ax, int ay, int az, int buttons_state)
+{
+ CharDriverState *chr = (CharDriverState *)opaque;
+
+ unsigned char bytes[10];
+ static int is_down=0;
+ int old_ax=0,old_ay=0;
+ int i;
+
+ /*A touchpad cannot capture flight events*/
+ if ((!is_down)&&(!buttons_state))
+ return;
+
+ ax=(ax*(4000-96+1))/0x7fff;
+ ax+=96;
+ ay=(ay*(4000-96+1))/0x7fff;
+ ay+=96;
+
+ /*Move event*/
+ if (is_down&&buttons_state){
+ bytes[2]=0x2;
+ is_down++;
+ if ((old_ay==ay)&&(old_ax==ax))
+ return;
+ old_ay=ay;
+ old_ax=ax;
+ }
+
+ /*Click*/
+ if ((!is_down)&&buttons_state){
+ bytes[2]=0x1;
+ is_down=1;
+ old_ay=ay;
+ old_ax=ax;
+ }
+ /*Release*/
+ if (is_down&&(!buttons_state)){
+ bytes[2]=0x4;
+ is_down=0;
+ }
+
+ bytes[0]='U';
+ bytes[1]='T';
+ bytes[3]=ax&0xff;
+ bytes[4]=(ax>>8)&0xff;
+ bytes[5]=ay&0xff;
+ bytes[6]=(ay>>8)&0xff;
+ bytes[7]=0x0;/*No presure capabilities*/
+ bytes[8]=0x0;
+ bytes[9]=0xaa;
+ for(i=0;i<9;i++)
+ bytes[9]+=bytes[i];
+
+ qemu_chr_read(chr, bytes, 10);
+}
+
+static int elo_chr_write (struct CharDriverState *s, const uint8_t *buf, int
len)
+{
+ unsigned char bytes[10];
+ static int in_cmd=0,i;
+
+ if (buf[0]==0x55)
+ in_cmd=0;
+
+ /*Only response to ID*/
+ in_cmd+=len;
+ if (in_cmd<10)
+ return len;
+
+ /* Only respond cmd ID This should be enough at least for linux*/
+ /*Full ref at
http://tge.cegep-baie-comeau.qc.ca/fichestech/References/Elo%20Touch%20Screen/smartset/pages/chapter_6.htm#command_descriptions*/
+ /*ID*/
+ in_cmd=0;
+ bytes[0]='U';
+ bytes[1]='I';
+ bytes[2]='0';/*Accu*/
+ bytes[3]='0';/*Serial*/
+ bytes[4]=0;/*No features*/
+ bytes[5]=1;
+ bytes[6]=2;
+ bytes[7]=1;/*1 response*/
+ bytes[8]=0xe;
+ bytes[9]=0xaa;
+ for(i=0;i<9;i++)
+ bytes[9]+=bytes[i];
+ qemu_chr_read(s, bytes, 10);
+
+ /*ACK no err*/
+ in_cmd=0;
+ bytes[0]='U';
+ bytes[1]='A';
+ bytes[2]='0';
+ bytes[3]='0';
+ bytes[4]='0';
+ bytes[5]=0;
+ bytes[6]=0;
+ bytes[7]=0;
+ bytes[8]=0;
+ bytes[9]=0xaa;
+ for(i=0;i<9;i++)
+ bytes[9]+=bytes[i];
+ qemu_chr_read(s, bytes, 10);
+ in_cmd=0;
+ return len;
+}
+
+static void elo_chr_close (struct CharDriverState *chr)
+{
+ qemu_free (chr);
+}
+
+CharDriverState *qemu_chr_open_elo(QemuOpts *opts)
+{
+ CharDriverState *chr;
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ chr->chr_write = elo_chr_write;
+ chr->chr_close = elo_chr_close;
+
+ fprintf(stderr,"ELO Touchpad\n");
+ qemu_add_mouse_event_handler(elo_event, chr, 1, "QEMU Elo Touchpad");
+
+ return chr;
+}
diff --git a/hw/elo.h b/hw/elo.h
new file mode 100644
index 0000000..4b4e09a
--- /dev/null
+++ b/hw/elo.h
@@ -0,0 +1,2 @@
+/* elo.c */
+CharDriverState *qemu_chr_open_elo(QemuOpts *opts);
diff --git a/hw/serial.c b/hw/serial.c
index f3ec36a..39c708f 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -92,7 +92,7 @@
#define UART_FCR_RFR 0x02 /* RCVR Fifo Reset */
#define UART_FCR_FE 0x01 /* FIFO Enable */
-#define UART_FIFO_LENGTH 16 /* 16550A Fifo Length */
+#define UART_FIFO_LENGTH 32 /* 16550A Fifo Length */
#define XMIT_FIFO 0
#define RECV_FIFO 1
diff --git a/qemu-char.c b/qemu-char.c
index 40cfefa..2f95767 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -32,6 +32,7 @@
#include "hw/usb.h"
#include "hw/baum.h"
#include "hw/msmouse.h"
+#include "hw/elo.h"
#include "qemu-objects.h"
#include <unistd.h>
@@ -2278,6 +2279,7 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const
char *filename)
if (strcmp(filename, "null") == 0 ||
strcmp(filename, "pty") == 0 ||
strcmp(filename, "msmouse") == 0 ||
+ strcmp(filename, "elo") == 0 ||
strcmp(filename, "braille") == 0 ||
strcmp(filename, "stdio") == 0) {
qemu_opt_set(opts, "backend", filename);
@@ -2391,6 +2393,7 @@ static const struct {
{ .name = "socket", .open = qemu_chr_open_socket },
{ .name = "udp", .open = qemu_chr_open_udp },
{ .name = "msmouse", .open = qemu_chr_open_msmouse },
+ { .name = "elo", .open = qemu_chr_open_elo },
{ .name = "vc", .open = text_console_init },
#ifdef _WIN32
{ .name = "file", .open = qemu_chr_open_win_file_out },
diff --git a/qemu-options.hx b/qemu-options.hx
index 7c33736..7ee62cb 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1183,7 +1183,7 @@ DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
"-chardev socket,id=id,path=path[,server][,nowait][,telnet] (unix)\n"
"-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]\n"
" [,localport=localport][,ipv4][,ipv6]\n"
- "-chardev msmouse,id=id\n"
+ "-chardev elo,id=id\n"
"-chardev
vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]\n"
"-chardev file,id=id,path=path\n"
"-chardev pipe,id=id,path=path\n"
@@ -1650,6 +1650,9 @@ or fake device.
@item msmouse
Three button serial mouse. Configure the guest to use Microsoft protocol.
+
address@hidden elo
+Elo Touchpad 10bytes emulator.
@end table
ETEXI
--
1.7.0.3