diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/mouse/vsxxxaa.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/mouse/vsxxxaa.c | 563 |
1 files changed, 0 insertions, 563 deletions
diff --git a/ANDROID_3.4.5/drivers/input/mouse/vsxxxaa.c b/ANDROID_3.4.5/drivers/input/mouse/vsxxxaa.c deleted file mode 100644 index eb9a3cfb..00000000 --- a/ANDROID_3.4.5/drivers/input/mouse/vsxxxaa.c +++ /dev/null @@ -1,563 +0,0 @@ -/* - * Driver for DEC VSXXX-AA mouse (hockey-puck mouse, ball or two rollers) - * DEC VSXXX-GA mouse (rectangular mouse, with ball) - * DEC VSXXX-AB tablet (digitizer with hair cross or stylus) - * - * Copyright (C) 2003-2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de> - * - * The packet format was initially taken from a patch to GPM which is (C) 2001 - * by Karsten Merker <merker@linuxtag.org> - * and Maciej W. Rozycki <macro@ds2.pg.gda.pl> - * Later on, I had access to the device's documentation (referenced below). - */ - -/* - * 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 - */ - -/* - * Building an adaptor to DE9 / DB25 RS232 - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * DISCLAIMER: Use this description AT YOUR OWN RISK! I'll not pay for - * anything if you break your mouse, your computer or whatever! - * - * In theory, this mouse is a simple RS232 device. In practice, it has got - * a quite uncommon plug and the requirement to additionally get a power - * supply at +5V and -12V. - * - * If you look at the socket/jack (_not_ at the plug), we use this pin - * numbering: - * _______ - * / 7 6 5 \ - * | 4 --- 3 | - * \ 2 1 / - * ------- - * - * DEC socket DE9 DB25 Note - * 1 (GND) 5 7 - - * 2 (RxD) 2 3 - - * 3 (TxD) 3 2 - - * 4 (-12V) - - Somewhere from the PSU. At ATX, it's - * the thin blue wire at pin 12 of the - * ATX power connector. Only required for - * VSXXX-AA/-GA mice. - * 5 (+5V) - - PSU (red wires of ATX power connector - * on pin 4, 6, 19 or 20) or HDD power - * connector (also red wire). - * 6 (+12V) - - HDD power connector, yellow wire. Only - * required for VSXXX-AB digitizer. - * 7 (dev. avail.) - - The mouse shorts this one to pin 1. - * This way, the host computer can detect - * the mouse. To use it with the adaptor, - * simply don't connect this pin. - * - * So to get a working adaptor, you need to connect the mouse with three - * wires to a RS232 port and two or three additional wires for +5V, +12V and - * -12V to the PSU. - * - * Flow specification for the link is 4800, 8o1. - * - * The mice and tablet are described in "VCB02 Video Subsystem - Technical - * Manual", DEC EK-104AA-TM-001. You'll find it at MANX, a search engine - * specific for DEC documentation. Try - * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1 - */ - -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/input.h> -#include <linux/serio.h> -#include <linux/init.h> - -#define DRIVER_DESC "Driver for DEC VSXXX-AA and -GA mice and VSXXX-AB tablet" - -MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -#undef VSXXXAA_DEBUG -#ifdef VSXXXAA_DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) do {} while (0) -#endif - -#define VSXXXAA_INTRO_MASK 0x80 -#define VSXXXAA_INTRO_HEAD 0x80 -#define IS_HDR_BYTE(x) \ - (((x) & VSXXXAA_INTRO_MASK) == VSXXXAA_INTRO_HEAD) - -#define VSXXXAA_PACKET_MASK 0xe0 -#define VSXXXAA_PACKET_REL 0x80 -#define VSXXXAA_PACKET_ABS 0xc0 -#define VSXXXAA_PACKET_POR 0xa0 -#define MATCH_PACKET_TYPE(data, type) \ - (((data) & VSXXXAA_PACKET_MASK) == (type)) - - - -struct vsxxxaa { - struct input_dev *dev; - struct serio *serio; -#define BUFLEN 15 /* At least 5 is needed for a full tablet packet */ - unsigned char buf[BUFLEN]; - unsigned char count; - unsigned char version; - unsigned char country; - unsigned char type; - char name[64]; - char phys[32]; -}; - -static void vsxxxaa_drop_bytes(struct vsxxxaa *mouse, int num) -{ - if (num >= mouse->count) { - mouse->count = 0; - } else { - memmove(mouse->buf, mouse->buf + num - 1, BUFLEN - num); - mouse->count -= num; - } -} - -static void vsxxxaa_queue_byte(struct vsxxxaa *mouse, unsigned char byte) -{ - if (mouse->count == BUFLEN) { - printk(KERN_ERR "%s on %s: Dropping a byte of full buffer.\n", - mouse->name, mouse->phys); - vsxxxaa_drop_bytes(mouse, 1); - } - - DBG(KERN_INFO "Queueing byte 0x%02x\n", byte); - - mouse->buf[mouse->count++] = byte; -} - -static void vsxxxaa_detection_done(struct vsxxxaa *mouse) -{ - switch (mouse->type) { - case 0x02: - strlcpy(mouse->name, "DEC VSXXX-AA/-GA mouse", - sizeof(mouse->name)); - break; - - case 0x04: - strlcpy(mouse->name, "DEC VSXXX-AB digitizer", - sizeof(mouse->name)); - break; - - default: - snprintf(mouse->name, sizeof(mouse->name), - "unknown DEC pointer device (type = 0x%02x)", - mouse->type); - break; - } - - printk(KERN_INFO - "Found %s version 0x%02x from country 0x%02x on port %s\n", - mouse->name, mouse->version, mouse->country, mouse->phys); -} - -/* - * Returns number of bytes to be dropped, 0 if packet is okay. - */ -static int vsxxxaa_check_packet(struct vsxxxaa *mouse, int packet_len) -{ - int i; - - /* First byte must be a header byte */ - if (!IS_HDR_BYTE(mouse->buf[0])) { - DBG("vsck: len=%d, 1st=0x%02x\n", packet_len, mouse->buf[0]); - return 1; - } - - /* Check all following bytes */ - for (i = 1; i < packet_len; i++) { - if (IS_HDR_BYTE(mouse->buf[i])) { - printk(KERN_ERR - "Need to drop %d bytes of a broken packet.\n", - i - 1); - DBG(KERN_INFO "check: len=%d, b[%d]=0x%02x\n", - packet_len, i, mouse->buf[i]); - return i - 1; - } - } - - return 0; -} - -static inline int vsxxxaa_smells_like_packet(struct vsxxxaa *mouse, - unsigned char type, size_t len) -{ - return mouse->count >= len && MATCH_PACKET_TYPE(mouse->buf[0], type); -} - -static void vsxxxaa_handle_REL_packet(struct vsxxxaa *mouse) -{ - struct input_dev *dev = mouse->dev; - unsigned char *buf = mouse->buf; - int left, middle, right; - int dx, dy; - - /* - * Check for normal stream packets. This is three bytes, - * with the first byte's 3 MSB set to 100. - * - * [0]: 1 0 0 SignX SignY Left Middle Right - * [1]: 0 dx dx dx dx dx dx dx - * [2]: 0 dy dy dy dy dy dy dy - */ - - /* - * Low 7 bit of byte 1 are abs(dx), bit 7 is - * 0, bit 4 of byte 0 is direction. - */ - dx = buf[1] & 0x7f; - dx *= ((buf[0] >> 4) & 0x01) ? 1 : -1; - - /* - * Low 7 bit of byte 2 are abs(dy), bit 7 is - * 0, bit 3 of byte 0 is direction. - */ - dy = buf[2] & 0x7f; - dy *= ((buf[0] >> 3) & 0x01) ? -1 : 1; - - /* - * Get button state. It's the low three bits - * (for three buttons) of byte 0. - */ - left = buf[0] & 0x04; - middle = buf[0] & 0x02; - right = buf[0] & 0x01; - - vsxxxaa_drop_bytes(mouse, 3); - - DBG(KERN_INFO "%s on %s: dx=%d, dy=%d, buttons=%s%s%s\n", - mouse->name, mouse->phys, dx, dy, - left ? "L" : "l", middle ? "M" : "m", right ? "R" : "r"); - - /* - * Report what we've found so far... - */ - input_report_key(dev, BTN_LEFT, left); - input_report_key(dev, BTN_MIDDLE, middle); - input_report_key(dev, BTN_RIGHT, right); - input_report_key(dev, BTN_TOUCH, 0); - input_report_rel(dev, REL_X, dx); - input_report_rel(dev, REL_Y, dy); - input_sync(dev); -} - -static void vsxxxaa_handle_ABS_packet(struct vsxxxaa *mouse) -{ - struct input_dev *dev = mouse->dev; - unsigned char *buf = mouse->buf; - int left, middle, right, touch; - int x, y; - - /* - * Tablet position / button packet - * - * [0]: 1 1 0 B4 B3 B2 B1 Pr - * [1]: 0 0 X5 X4 X3 X2 X1 X0 - * [2]: 0 0 X11 X10 X9 X8 X7 X6 - * [3]: 0 0 Y5 Y4 Y3 Y2 Y1 Y0 - * [4]: 0 0 Y11 Y10 Y9 Y8 Y7 Y6 - */ - - /* - * Get X/Y position. Y axis needs to be inverted since VSXXX-AB - * counts down->top while monitor counts top->bottom. - */ - x = ((buf[2] & 0x3f) << 6) | (buf[1] & 0x3f); - y = ((buf[4] & 0x3f) << 6) | (buf[3] & 0x3f); - y = 1023 - y; - - /* - * Get button state. It's bits <4..1> of byte 0. - */ - left = buf[0] & 0x02; - middle = buf[0] & 0x04; - right = buf[0] & 0x08; - touch = buf[0] & 0x10; - - vsxxxaa_drop_bytes(mouse, 5); - - DBG(KERN_INFO "%s on %s: x=%d, y=%d, buttons=%s%s%s%s\n", - mouse->name, mouse->phys, x, y, - left ? "L" : "l", middle ? "M" : "m", - right ? "R" : "r", touch ? "T" : "t"); - - /* - * Report what we've found so far... - */ - input_report_key(dev, BTN_LEFT, left); - input_report_key(dev, BTN_MIDDLE, middle); - input_report_key(dev, BTN_RIGHT, right); - input_report_key(dev, BTN_TOUCH, touch); - input_report_abs(dev, ABS_X, x); - input_report_abs(dev, ABS_Y, y); - input_sync(dev); -} - -static void vsxxxaa_handle_POR_packet(struct vsxxxaa *mouse) -{ - struct input_dev *dev = mouse->dev; - unsigned char *buf = mouse->buf; - int left, middle, right; - unsigned char error; - - /* - * Check for Power-On-Reset packets. These are sent out - * after plugging the mouse in, or when explicitly - * requested by sending 'T'. - * - * [0]: 1 0 1 0 R3 R2 R1 R0 - * [1]: 0 M2 M1 M0 D3 D2 D1 D0 - * [2]: 0 E6 E5 E4 E3 E2 E1 E0 - * [3]: 0 0 0 0 0 Left Middle Right - * - * M: manufacturer location code - * R: revision code - * E: Error code. If it's in the range of 0x00..0x1f, only some - * minor problem occurred. Errors >= 0x20 are considered bad - * and the device may not work properly... - * D: <0010> == mouse, <0100> == tablet - */ - - mouse->version = buf[0] & 0x0f; - mouse->country = (buf[1] >> 4) & 0x07; - mouse->type = buf[1] & 0x0f; - error = buf[2] & 0x7f; - - /* - * Get button state. It's the low three bits - * (for three buttons) of byte 0. Maybe even the bit <3> - * has some meaning if a tablet is attached. - */ - left = buf[0] & 0x04; - middle = buf[0] & 0x02; - right = buf[0] & 0x01; - - vsxxxaa_drop_bytes(mouse, 4); - vsxxxaa_detection_done(mouse); - - if (error <= 0x1f) { - /* No (serious) error. Report buttons */ - input_report_key(dev, BTN_LEFT, left); - input_report_key(dev, BTN_MIDDLE, middle); - input_report_key(dev, BTN_RIGHT, right); - input_report_key(dev, BTN_TOUCH, 0); - input_sync(dev); - - if (error != 0) - printk(KERN_INFO "Your %s on %s reports error=0x%02x\n", - mouse->name, mouse->phys, error); - - } - - /* - * If the mouse was hot-plugged, we need to force differential mode - * now... However, give it a second to recover from it's reset. - */ - printk(KERN_NOTICE - "%s on %s: Forcing standard packet format, " - "incremental streaming mode and 72 samples/sec\n", - mouse->name, mouse->phys); - serio_write(mouse->serio, 'S'); /* Standard format */ - mdelay(50); - serio_write(mouse->serio, 'R'); /* Incremental */ - mdelay(50); - serio_write(mouse->serio, 'L'); /* 72 samples/sec */ -} - -static void vsxxxaa_parse_buffer(struct vsxxxaa *mouse) -{ - unsigned char *buf = mouse->buf; - int stray_bytes; - - /* - * Parse buffer to death... - */ - do { - /* - * Out of sync? Throw away what we don't understand. Each - * packet starts with a byte whose bit 7 is set. Unhandled - * packets (ie. which we don't know about or simply b0rk3d - * data...) will get shifted out of the buffer after some - * activity on the mouse. - */ - while (mouse->count > 0 && !IS_HDR_BYTE(buf[0])) { - printk(KERN_ERR "%s on %s: Dropping a byte to regain " - "sync with mouse data stream...\n", - mouse->name, mouse->phys); - vsxxxaa_drop_bytes(mouse, 1); - } - - /* - * Check for packets we know about. - */ - - if (vsxxxaa_smells_like_packet(mouse, VSXXXAA_PACKET_REL, 3)) { - /* Check for broken packet */ - stray_bytes = vsxxxaa_check_packet(mouse, 3); - if (!stray_bytes) - vsxxxaa_handle_REL_packet(mouse); - - } else if (vsxxxaa_smells_like_packet(mouse, - VSXXXAA_PACKET_ABS, 5)) { - /* Check for broken packet */ - stray_bytes = vsxxxaa_check_packet(mouse, 5); - if (!stray_bytes) - vsxxxaa_handle_ABS_packet(mouse); - - } else if (vsxxxaa_smells_like_packet(mouse, - VSXXXAA_PACKET_POR, 4)) { - /* Check for broken packet */ - stray_bytes = vsxxxaa_check_packet(mouse, 4); - if (!stray_bytes) - vsxxxaa_handle_POR_packet(mouse); - - } else { - break; /* No REL, ABS or POR packet found */ - } - - if (stray_bytes > 0) { - printk(KERN_ERR "Dropping %d bytes now...\n", - stray_bytes); - vsxxxaa_drop_bytes(mouse, stray_bytes); - } - - } while (1); -} - -static irqreturn_t vsxxxaa_interrupt(struct serio *serio, - unsigned char data, unsigned int flags) -{ - struct vsxxxaa *mouse = serio_get_drvdata(serio); - - vsxxxaa_queue_byte(mouse, data); - vsxxxaa_parse_buffer(mouse); - - return IRQ_HANDLED; -} - -static void vsxxxaa_disconnect(struct serio *serio) -{ - struct vsxxxaa *mouse = serio_get_drvdata(serio); - - serio_close(serio); - serio_set_drvdata(serio, NULL); - input_unregister_device(mouse->dev); - kfree(mouse); -} - -static int vsxxxaa_connect(struct serio *serio, struct serio_driver *drv) -{ - struct vsxxxaa *mouse; - struct input_dev *input_dev; - int err = -ENOMEM; - - mouse = kzalloc(sizeof(struct vsxxxaa), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!mouse || !input_dev) - goto fail1; - - mouse->dev = input_dev; - mouse->serio = serio; - strlcat(mouse->name, "DEC VSXXX-AA/-GA mouse or VSXXX-AB digitizer", - sizeof(mouse->name)); - snprintf(mouse->phys, sizeof(mouse->phys), "%s/input0", serio->phys); - - input_dev->name = mouse->name; - input_dev->phys = mouse->phys; - input_dev->id.bustype = BUS_RS232; - input_dev->dev.parent = &serio->dev; - - __set_bit(EV_KEY, input_dev->evbit); /* We have buttons */ - __set_bit(EV_REL, input_dev->evbit); - __set_bit(EV_ABS, input_dev->evbit); - __set_bit(BTN_LEFT, input_dev->keybit); /* We have 3 buttons */ - __set_bit(BTN_MIDDLE, input_dev->keybit); - __set_bit(BTN_RIGHT, input_dev->keybit); - __set_bit(BTN_TOUCH, input_dev->keybit); /* ...and Tablet */ - __set_bit(REL_X, input_dev->relbit); - __set_bit(REL_Y, input_dev->relbit); - input_set_abs_params(input_dev, ABS_X, 0, 1023, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 0, 1023, 0, 0); - - serio_set_drvdata(serio, mouse); - - err = serio_open(serio, drv); - if (err) - goto fail2; - - /* - * Request selftest. Standard packet format and differential - * mode will be requested after the device ID'ed successfully. - */ - serio_write(serio, 'T'); /* Test */ - - err = input_register_device(input_dev); - if (err) - goto fail3; - - return 0; - - fail3: serio_close(serio); - fail2: serio_set_drvdata(serio, NULL); - fail1: input_free_device(input_dev); - kfree(mouse); - return err; -} - -static struct serio_device_id vsxxaa_serio_ids[] = { - { - .type = SERIO_RS232, - .proto = SERIO_VSXXXAA, - .id = SERIO_ANY, - .extra = SERIO_ANY, - }, - { 0 } -}; - -MODULE_DEVICE_TABLE(serio, vsxxaa_serio_ids); - -static struct serio_driver vsxxxaa_drv = { - .driver = { - .name = "vsxxxaa", - }, - .description = DRIVER_DESC, - .id_table = vsxxaa_serio_ids, - .connect = vsxxxaa_connect, - .interrupt = vsxxxaa_interrupt, - .disconnect = vsxxxaa_disconnect, -}; - -static int __init vsxxxaa_init(void) -{ - return serio_register_driver(&vsxxxaa_drv); -} - -static void __exit vsxxxaa_exit(void) -{ - serio_unregister_driver(&vsxxxaa_drv); -} - -module_init(vsxxxaa_init); -module_exit(vsxxxaa_exit); - |