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Diffstat (limited to 'Source/DirectFB/inputdrivers/mutouch/mutouch.c')
| -rwxr-xr-x | Source/DirectFB/inputdrivers/mutouch/mutouch.c | 615 |
1 files changed, 615 insertions, 0 deletions
diff --git a/Source/DirectFB/inputdrivers/mutouch/mutouch.c b/Source/DirectFB/inputdrivers/mutouch/mutouch.c new file mode 100755 index 0000000..79c278f --- /dev/null +++ b/Source/DirectFB/inputdrivers/mutouch/mutouch.c @@ -0,0 +1,615 @@ +/* + (c) Copyright 2000-2002 Fulgid Technology Co., Ltd. + + All rights reserved. + + Written by Simon Ueng <simon@ftech.com.tw> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + This driver is a re-write from the MuTouch driver provided in XFree86. + Extended options in the MuTouch firmware are not used as it wasn't + an issue during the writing of this driver. + Baudrate has also been rewritting to automatically adjust to 19200 if + its support else it uses 9600. + + Feel free to change according to your needs, but changing both + MuT_MINX as well as MuT_MINY is required to adjust the orientation + of the touchscreen. We've had numerous occasions where the one + touchscreen was installed in a different orientation than others. + Also don't forget to adjust the MuT_SCREENWIDTH and MuT_SCREENHEIGHT + for the appropriate screen dimension. + + Not much time has been spent writing this driver therefore expect errors. + Calibration process has also been omitted since there are applications + to do the calibration process. + + Lastly, please don't email me regarding technical informations. I + don't work for 3M. But if you have any new ideas on improving this + driver, please don't hesitate to share it with me. + */ +/* + * Jacques Luder j.luder@laposte.net + * Baudrate adjust now realy working ! + * version 0.3 10/09/2006 Jacques Luder j.luder@laposte.net + * Can now work also with a keyspan USB-Serial line. + * Can start OK even if someone touch the screen during probing. + */ + +#include <config.h> + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> + +#include <termios.h> + +#include <sys/ioctl.h> +#include <sys/types.h> + +#include <linux/serial.h> + +#include <directfb.h> + +#include <core/coredefs.h> +#include <core/coretypes.h> + +#include <core/input.h> +#include <core/system.h> + +#include <misc/conf.h> + +#include <direct/debug.h> +#include <direct/mem.h> +#include <direct/messages.h> +#include <direct/memcpy.h> +#include <direct/thread.h> + +#include <core/input_driver.h> + + +DFB_INPUT_DRIVER( mutouch ) + + +#define BAUDRATE B9600 +#define OPTIMAL_BAUDRATE B19200 +#define MAX_TIMEOUT 5 + +#define MuT_REPORT_SIZE 5 +#define MuT_PACKET_SIZE 10 +#define MuT_SCREENWIDTH 4096 +#define MuT_SCREENHEIGHT 4096 +#define MuT_MINX 0 +#define MuT_MINY 0 + +#define MuT_LEAD_BYTE 0x01 +#define MuT_TRAIL_BYTE 0x0d + + +#define ERROR_NOT_SUITABLE -1110 /* The touchpanel firmware is not + suitable for IMP2001 */ +#define ERROR_NOT_FOUND -1111 /* Touchpanel not found */ +#define ERROR_INIT -1112 /* Error occurred while initializing */ + +#define MUT_PANEL_TOUCH 0x01 +#define MUT_PANEL_UNTOUCH 0x00 + + +/* Commands */ +#define MuT_RESET "R" +#define MuT_AUTOBAUD_DISABLE "AD" +#define MuT_RESTORE_DEFAULTS "RD" +#define MuT_QUERY "Z" +#define MuT_FORMAT_TABLET "FT" +#define MuT_FORMAT_RAW "FR" +#define MuT_CALIBRATE_RAW "CR" +#define MuT_CALIBRATE_EXT "CX" +#define MuT_OUTPUT_IDENT "OI" +#define MuT_UNIT_TYPE "UT" +#define MuT_FINGER_ONLY "FO" +#define MuT_PEN_ONLY "PO" +#define MuT_PEN_FINGER "PF" +#define MuT_MODE_STREAM "MS" +#define MuT_MODE_DOWN_UP "MDU" + +/* Command reply */ +#define MuT_OK '0' +#define MuT_ERROR '1' + +/* Offsets in status byte of touch and motion reports */ +#define MuT_WHICH_DEVICE 0x20 +#define MuT_CONTACT 0x40 + +/* Identity and friends */ +#define MuT_SMT3_IDENT "Q1" +#define MuT_THRU_GLASS_IDENT "T1" + +/* Event mask */ +#define MuT_PANEL_TOUCH_MASK 0x40 +#define MuT_PANEL_SYNC_MASK 0x80 + +typedef struct __MuTData__ { + int fd; + DirectThread *thread; + CoreInputDevice *device; + unsigned short x; + unsigned short y; + unsigned short screen_width; + unsigned short screen_height; + unsigned short min_x; + unsigned short min_y; + unsigned char action; +} MuTData; + +/* Global Variables */ +static unsigned char packet[MuT_PACKET_SIZE]; + + +static inline void __mdelay(unsigned int msec) +{ + struct timespec delay; + + delay.tv_sec = 0; + delay.tv_nsec = msec * 1000000; + nanosleep (&delay, NULL); +} + +static inline void MuTSendPacket(int file, char *packet, unsigned char len) +{ + unsigned char tmp_packet[MuT_PACKET_SIZE]; + + direct_memcpy (&tmp_packet[1], packet, len); + *tmp_packet = MuT_LEAD_BYTE; + tmp_packet[len + 1] = MuT_TRAIL_BYTE; + write (file, tmp_packet, len + 2); +} + +static inline void MuTReadPacket(int file, unsigned char *packet) +{ + int n = 0; + + while ( n < MuT_REPORT_SIZE ) { + read( file, &packet[n], 1 ); + if ( (packet[0] & MuT_PANEL_SYNC_MASK) != 0) { + n++; + } + } +} + +static int MuTSetToOptimalCTRL(int file, unsigned long baud) +{ + unsigned char packet[3]={0,0,0}; + struct termios options; + struct termios save_options; + /* + * We are now in a mode who "works" but may be not the good one ! + * So we will make a test if a "good" mode works fine ... + */ + + tcgetattr(file, &options); + tcgetattr(file, &save_options); // Save mode who works. + /* + * Send a command to change to suitable mode. + */ + switch (baud) { + case B19200: + MuTSendPacket (file, "PN811", 5); + break; + case B9600: + MuTSendPacket (file, "PN812", 5); + break; + } + // Note answer from driver will be lost ! there is no way to catch it with some + // USB-Serial device. we have only to wait ! + __mdelay (20); + + /* + * We can't work on CS7 mode messages format are not the same ! + */ + options.c_cflag = CS8 | CLOCAL | CREAD; + /* + * POSIX says speed is ONLY here ! + */ + cfsetospeed( &options, baud); + cfsetispeed( &options, 0); // Same as output. + + tcsetattr (file, TCSANOW, &options); + __mdelay (100); + tcflush (file, TCIFLUSH); + /* + * With some USB-Serial device flush may occurs after sending message and answer from driver + * may be lost ! ... so we wait ! + */ + __mdelay (100); + + switch (baud) { + case B19200: + MuTSendPacket (file, "PN811", 5); + break; + case B9600: + MuTSendPacket (file, "PN812", 5); + break; + } + /* + * note if someone touch screen, we have also to strip "touch" message by testing MuT_LEAD_BYTE. + */ + __mdelay (100); + int n = 0; + while ( n <3 ) { + if (read( file, &packet[n], 1 ) <=0) + break; + if ( packet[n] == MuT_LEAD_BYTE ) { // new start + n = 0; + packet[0] = MuT_LEAD_BYTE; + } + if ( (n==1) && (packet[1] != MuT_OK)) { + n = 0; + packet[0]= 0; + } + if ( (n==2) && (packet[2] != MuT_TRAIL_BYTE) ) { + n = 0; + packet[0]= 0; + } + if ( packet[0] == MuT_LEAD_BYTE) + n++; + } + + if ( n == 3 ) { + /* Unset O_NONBLOCK */ + int flags; + flags = fcntl( file, F_GETFL ); + flags &= ~O_NONBLOCK; + fcntl( file, F_SETFL, flags ); + /* Unset VTIME */ + options.c_cc[VMIN] = 1; + options.c_cc[VTIME] = 0; + tcsetattr (file, TCSANOW, &options); + __mdelay (100); + + return 1; // OK + } + // KO return to old termios options. + tcsetattr (file, TCSANOW, &save_options); + __mdelay (100); + return 0; +} + + +static int MuTPollDevice(char *device) +{ + int file; + struct termios options; + unsigned char i, m; + unsigned char packet[MuT_PACKET_SIZE]; + unsigned long baud[2] = {B9600, B19200}; + unsigned long misc[2] = {CS8, CS7 | CSTOPB}; + + file = open (device, O_RDWR | O_NOCTTY); + + /* Set O_NONBLOCK */ + int flags; + flags = fcntl( file, F_GETFL ); + flags |= O_NONBLOCK; + fcntl( file, F_SETFL, flags ); + + + /* Make raw I/O */ + memset (&options, 0, sizeof (struct termios)); + + /* cfmakeraw(&options) */ + options.c_cc[VMIN] = 0; + options.c_cc[VTIME] = 10; + + /* loop through the bauds */ + for (i = 0; i < 2; i++) { + /* loop through the misc configs */ + for (m = 0; m < 2; m++) { + options.c_cflag = misc[m] | CLOCAL | CREAD; + /* + * POSIX + */ + cfsetospeed( &options, baud[i]); + cfsetispeed( &options, 0); + tcsetattr (file, TCSANOW, &options); + /* wait for some USB-Serial device */ + __mdelay (100); + tcflush (file, TCIFLUSH); + __mdelay (100); + + MuTSendPacket (file, MuT_QUERY, strlen (MuT_QUERY)); + /* we are in O_NONBLOCK need wait before read */ + __mdelay (100); + + int n = 0; + while ( n <3 ) { + if (read( file, &packet[n], 1 ) <=0) + break; + if ( packet[n] == MuT_LEAD_BYTE ) { // new start + n = 0; + packet[0] = MuT_LEAD_BYTE; + } + if ( (n==1) && (packet[1] != MuT_OK)) { // false start + n = 0; + packet[0]= 0; + } + if ( (n==2) && (packet[2] != MuT_TRAIL_BYTE) ) { // false start + n = 0; + packet[0]= 0; + } + if ( packet[0] == MuT_LEAD_BYTE) + n++; + } + + if ( n == 3 ) { + + + if (MuTSetToOptimalCTRL (file, B19200)) { + return file; + } + else if (MuTSetToOptimalCTRL (file, B9600)) { + return file; + } + else return ERROR_NOT_SUITABLE; + } + } + } + close(file); + return ERROR_NOT_FOUND; +} + +static int MuTInitCmd(int file, char *cmd) +{ + unsigned char timeout = 0; + unsigned char packet[MuT_PACKET_SIZE]; + + do { + MuTSendPacket (file, cmd, strlen (cmd)); + + /* + * Strip out 'touch" message + */ + int n = 0; + while ( n <3 ) { + if (read( file, &packet[n], 1 ) <=0) + break; + if ( packet[0] == MuT_LEAD_BYTE) + n++; + } + + timeout++; + if (timeout >= MAX_TIMEOUT) + return ERROR_INIT; + } while (packet[1] != MuT_OK); + + return 1; +} + +static inline int MuTInitialize(int file) +{ + if (!MuTInitCmd (file, MuT_RESET)) + return 0; + if (!MuTInitCmd (file, MuT_FINGER_ONLY)) + return 0; + if (!MuTInitCmd (file, MuT_MODE_DOWN_UP)) + return 0; + if (!MuTInitCmd (file, MuT_FORMAT_TABLET)) + return 0; + + return 1; +} + +static int MuTOpenDevice(char *device) +{ + int fd; + int res; + + fd = MuTPollDevice (device); + if ((res = MuTInitialize (fd)) == 0) { + close (fd); + return res; + } + + return fd; +} + +#define WORD_ASSEMBLY(byte1, byte2) (((byte2) << 7) | (byte1)) +static int MuTGetEvent(MuTData *event) +{ + MuTReadPacket(event->fd, packet); + + /* Sync bit always must be set to 1 */ + if ((*packet & MuT_PANEL_SYNC_MASK) == 0) + return 0; + + if (*packet & MuT_PANEL_TOUCH_MASK) + event->action = MUT_PANEL_TOUCH; + else + event->action = MUT_PANEL_UNTOUCH; + + event->x = (event->screen_width * + WORD_ASSEMBLY(packet[1], packet[2])) / 16383; + event->y = (event->screen_height * + WORD_ASSEMBLY(packet[3], packet[4])) / 16383; + + if (event->min_x) + event->x = event->min_x - event->x; + if (event->min_y) + event->y = event->min_y - event->y; + + return 1; +} + +/* The main routine for MuTouch */ +static void *MuTouchEventThread(DirectThread *thread, void *driver_data) +{ + MuTData *data = (MuTData *) driver_data; + + /* Read data */ + while (1) { + DFBInputEvent evt; + + if (!MuTGetEvent (data)) + continue; + direct_thread_testcancel (thread); + + /* Dispatch axis */ + evt.type = DIET_AXISMOTION; + evt.flags = DIEF_AXISABS; + evt.axis = DIAI_X; + evt.axisabs = data->x; + dfb_input_dispatch (data->device, &evt); + + evt.type = DIET_AXISMOTION; + evt.flags = DIEF_AXISABS; + evt.axis = DIAI_Y; + evt.axisabs = data->y; + dfb_input_dispatch (data->device, &evt); + + /* Dispatch touch event */ + switch (data->action) { + case MUT_PANEL_TOUCH: + evt.type = DIET_BUTTONPRESS; + break; + case MUT_PANEL_UNTOUCH: + evt.type = DIET_BUTTONRELEASE; + break; + } + + evt.flags = DIEF_NONE; + evt.button = DIBI_LEFT; + + dfb_input_dispatch (data->device, &evt); + direct_thread_testcancel (thread); + } + + return NULL; +} + +/* exported symbols */ + +static int driver_get_available( void ) +{ + int fd; + + if (!dfb_config->mut_device) + return 0; + + fd = MuTOpenDevice (dfb_config->mut_device); + if (fd < 0) + return 0; + + close(fd); + + return 1; +} + +static void driver_get_info( InputDriverInfo *info ) +{ + /* fill driver info structure */ + snprintf(info->name, DFB_INPUT_DRIVER_INFO_NAME_LENGTH, + "MuTouch" ); + snprintf(info->vendor, DFB_INPUT_DRIVER_INFO_VENDOR_LENGTH, + "Microtouch" ); + + info->version.major = 0; + info->version.minor = 3; +} + +static DFBResult driver_open_device(CoreInputDevice *device, + unsigned int number, + InputDeviceInfo *info, + void **driver_data) +{ + int fd; + MuTData *data; + + /* open device */ + fd = MuTOpenDevice (dfb_config->mut_device); + D_INFO("MuTouch:driver_open_device %s fd %d\n", dfb_config->mut_device,fd); + + if (fd < 0) { + return DFB_INIT; + } + + data = D_CALLOC (1, sizeof(MuTData)); + if (!data) { + close (fd); + return D_OOM (); + } + + data->fd = fd; + data->device = device; + + /* Must define the correct resolution of screen */ + data->screen_width = MuT_SCREENWIDTH; + data->screen_height = MuT_SCREENHEIGHT; + + /* The following variable are defined to adjust the orientation of + * the touchscreen. Variables are either max screen height/width or 0. + */ + data->min_x = MuT_MINX; + data->min_y = MuT_MINY; + + /* fill device info structure */ + snprintf(info->desc.name, DFB_INPUT_DEVICE_DESC_NAME_LENGTH, + "MuTouch"); + snprintf(info->desc.vendor, DFB_INPUT_DEVICE_DESC_VENDOR_LENGTH, + "Microtouch"); + + info->prefered_id = DIDID_MOUSE; + info->desc.type = DIDTF_MOUSE; + info->desc.caps = DICAPS_AXES | DICAPS_BUTTONS; + info->desc.max_axis = DIAI_Y; + info->desc.max_button = DIBI_LEFT; + + /* start input thread */ + data->thread = direct_thread_create (DTT_INPUT, MuTouchEventThread, data, "MuTouch Input"); + + /* set private data pointer */ + *driver_data = data; + + return DFB_OK; +} + +/* + * Fetch one entry from the device's keymap if supported. + */ +static DFBResult driver_get_keymap_entry(CoreInputDevice *device, + void *driver_data, + DFBInputDeviceKeymapEntry *entry) +{ + return DFB_UNSUPPORTED; +} + +static void driver_close_device(void *driver_data) +{ + MuTData *data = (MuTData *)driver_data; + + /* stop input thread */ + direct_thread_cancel (data->thread); + direct_thread_join (data->thread); + direct_thread_destroy (data->thread); + + /* close device */ + close (data->fd); + + /* free private data */ + D_FREE (data); +} + |