2 * Finger Sensing Pad PS/2 mouse driver.
4 * Copyright (C) 2005-2007 Asia Vital Components Co., Ltd.
5 * Copyright (C) 2005-2010 Tai-hwa Liang, Sentelic Corporation.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/module.h>
23 #include <linux/input.h>
24 #include <linux/ctype.h>
25 #include <linux/libps2.h>
26 #include <linux/serio.h>
27 #include <linux/jiffies.h>
28 #include <linux/slab.h>
34 * Timeout for FSP PS/2 command only (in milliseconds).
36 #define FSP_CMD_TIMEOUT 200
37 #define FSP_CMD_TIMEOUT2 30
39 /** Driver version. */
40 static const char fsp_drv_ver[] = "1.0.0-K";
43 * Make sure that the value being sent to FSP will not conflict with
44 * possible sample rate values.
46 static unsigned char fsp_test_swap_cmd(unsigned char reg_val)
49 case 10: case 20: case 40: case 60: case 80: case 100: case 200:
51 * The requested value being sent to FSP matched to possible
52 * sample rates, swap the given value such that the hardware
53 * wouldn't get confused.
55 return (reg_val >> 4) | (reg_val << 4);
57 return reg_val; /* swap isn't necessary */
62 * Make sure that the value being sent to FSP will not conflict with certain
65 static unsigned char fsp_test_invert_cmd(unsigned char reg_val)
68 case 0xe9: case 0xee: case 0xf2: case 0xff:
70 * The requested value being sent to FSP matched to certain
71 * commands, inverse the given value such that the hardware
72 * wouldn't get confused.
76 return reg_val; /* inversion isn't necessary */
80 static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val)
82 struct ps2dev *ps2dev = &psmouse->ps2dev;
83 unsigned char param[3];
88 * We need to shut off the device and switch it into command
89 * mode so we don't confuse our protocol handler. We don't need
90 * to do that for writes because sysfs set helper does this for
93 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE);
94 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
96 ps2_begin_command(ps2dev);
98 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
101 /* should return 0xfe(request for resending) */
102 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
103 /* should return 0xfc(failed) */
104 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
106 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
109 if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
110 ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2);
111 } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
112 /* swapping is required */
113 ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2);
116 /* swapping isn't necessary */
117 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
120 /* should return 0xfc(failed) */
121 ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT);
123 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0)
130 ps2_end_command(ps2dev);
131 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
132 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
133 dev_dbg(&ps2dev->serio->dev, "READ REG: 0x%02x is 0x%02x (rc = %d)\n",
134 reg_addr, *reg_val, rc);
138 static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val)
140 struct ps2dev *ps2dev = &psmouse->ps2dev;
144 ps2_begin_command(ps2dev);
146 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
149 if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
150 /* inversion is required */
151 ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2);
153 if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
154 /* swapping is required */
155 ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2);
157 /* swapping isn't necessary */
158 ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2);
161 /* write the register address in correct order */
162 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
164 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
167 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
168 /* inversion is required */
169 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
170 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
171 /* swapping is required */
172 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
174 /* swapping isn't necessary */
175 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
178 /* write the register value in correct order */
179 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
183 ps2_end_command(ps2dev);
184 dev_dbg(&ps2dev->serio->dev, "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n",
185 reg_addr, reg_val, rc);
189 /* Enable register clock gating for writing certain registers */
190 static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable)
194 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1)
198 nv = v | FSP_BIT_EN_REG_CLK;
200 nv = v & ~FSP_BIT_EN_REG_CLK;
202 /* only write if necessary */
204 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1)
210 static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val)
212 struct ps2dev *ps2dev = &psmouse->ps2dev;
213 unsigned char param[3];
216 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE);
217 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
219 ps2_begin_command(ps2dev);
221 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
224 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
225 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
227 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
230 ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2);
231 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
233 /* get the returned result */
234 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
241 ps2_end_command(ps2dev);
242 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
243 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
244 dev_dbg(&ps2dev->serio->dev, "READ PAGE REG: 0x%02x (rc = %d)\n",
249 static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val)
251 struct ps2dev *ps2dev = &psmouse->ps2dev;
255 ps2_begin_command(ps2dev);
257 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
260 ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2);
261 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
263 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
266 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
267 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
268 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
269 /* swapping is required */
270 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
272 /* swapping isn't necessary */
273 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
276 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
280 ps2_end_command(ps2dev);
281 dev_dbg(&ps2dev->serio->dev, "WRITE PAGE REG: to 0x%02x (rc = %d)\n",
286 static int fsp_get_version(struct psmouse *psmouse, int *version)
288 if (fsp_reg_read(psmouse, FSP_REG_VERSION, version))
294 static int fsp_get_revision(struct psmouse *psmouse, int *rev)
296 if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev))
302 static int fsp_get_buttons(struct psmouse *psmouse, int *btn)
304 static const int buttons[] = {
305 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */
306 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */
307 0x04, /* Left/Middle/Right & Scroll Up/Down */
308 0x02, /* Left/Middle/Right */
312 if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS1, &val) == -1)
315 *btn = buttons[(val & 0x30) >> 4];
319 /* Enable on-pad command tag output */
320 static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable)
325 if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) {
326 dev_err(&psmouse->ps2dev.serio->dev, "Unable get OPC state.\n");
331 nv = v | FSP_BIT_EN_OPC_TAG;
333 nv = v & ~FSP_BIT_EN_OPC_TAG;
335 /* only write if necessary */
337 fsp_reg_write_enable(psmouse, true);
338 res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv);
339 fsp_reg_write_enable(psmouse, false);
343 dev_err(&psmouse->ps2dev.serio->dev,
344 "Unable to enable OPC tag.\n");
351 static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable)
353 struct fsp_data *pad = psmouse->private;
356 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
359 pad->vscroll = enable;
362 val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE);
364 val &= ~FSP_BIT_FIX_VSCR;
366 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
372 static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable)
374 struct fsp_data *pad = psmouse->private;
377 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
380 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2))
383 pad->hscroll = enable;
386 val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE);
387 v2 |= FSP_BIT_EN_MSID6;
389 val &= ~FSP_BIT_FIX_HSCR;
390 v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8);
393 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
396 /* reconfigure horizontal scrolling packet output */
397 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2))
404 * Write device specific initial parameters.
406 * ex: 0xab 0xcd - write oxcd into register 0xab
408 static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data,
409 const char *buf, size_t count)
415 reg = simple_strtoul(buf, &rest, 16);
416 if (rest == buf || *rest != ' ' || reg > 0xff)
419 retval = kstrtoint(rest + 1, 16, &val);
426 if (fsp_reg_write_enable(psmouse, true))
429 retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count;
431 fsp_reg_write_enable(psmouse, false);
436 PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg);
438 static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse,
439 void *data, char *buf)
441 struct fsp_data *pad = psmouse->private;
443 return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val);
447 * Read a register from device.
449 * ex: 0xab -- read content from register 0xab
451 static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data,
452 const char *buf, size_t count)
454 struct fsp_data *pad = psmouse->private;
457 err = kstrtoint(buf, 16, ®);
464 if (fsp_reg_read(psmouse, reg, &val))
473 PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
474 fsp_attr_show_getreg, fsp_attr_set_getreg);
476 static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
477 void *data, char *buf)
481 if (fsp_page_reg_read(psmouse, &val))
484 return sprintf(buf, "%02x\n", val);
487 static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
488 const char *buf, size_t count)
492 err = kstrtoint(buf, 16, &val);
499 if (fsp_page_reg_write(psmouse, val))
505 PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
506 fsp_attr_show_pagereg, fsp_attr_set_pagereg);
508 static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
509 void *data, char *buf)
511 struct fsp_data *pad = psmouse->private;
513 return sprintf(buf, "%d\n", pad->vscroll);
516 static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
517 const char *buf, size_t count)
522 err = kstrtouint(buf, 10, &val);
529 fsp_onpad_vscr(psmouse, val);
534 PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
535 fsp_attr_show_vscroll, fsp_attr_set_vscroll);
537 static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
538 void *data, char *buf)
540 struct fsp_data *pad = psmouse->private;
542 return sprintf(buf, "%d\n", pad->hscroll);
545 static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
546 const char *buf, size_t count)
551 err = kstrtouint(buf, 10, &val);
558 fsp_onpad_hscr(psmouse, val);
563 PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
564 fsp_attr_show_hscroll, fsp_attr_set_hscroll);
566 static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
567 void *data, char *buf)
569 struct fsp_data *pad = psmouse->private;
571 return sprintf(buf, "%c\n",
572 pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
575 static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
576 const char *buf, size_t count)
578 struct fsp_data *pad = psmouse->private;
581 for (i = 0; i < count; i++) {
584 pad->flags |= FSPDRV_FLAG_EN_OPC;
587 pad->flags &= ~FSPDRV_FLAG_EN_OPC;
596 PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
597 fsp_attr_show_flags, fsp_attr_set_flags);
599 static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
600 void *data, char *buf)
602 return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
605 PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
607 static struct attribute *fsp_attributes[] = {
608 &psmouse_attr_setreg.dattr.attr,
609 &psmouse_attr_getreg.dattr.attr,
610 &psmouse_attr_page.dattr.attr,
611 &psmouse_attr_vscroll.dattr.attr,
612 &psmouse_attr_hscroll.dattr.attr,
613 &psmouse_attr_flags.dattr.attr,
614 &psmouse_attr_ver.dattr.attr,
618 static struct attribute_group fsp_attribute_group = {
619 .attrs = fsp_attributes,
623 static void fsp_packet_debug(unsigned char packet[])
625 static unsigned int ps2_packet_cnt;
626 static unsigned int ps2_last_second;
627 unsigned int jiffies_msec;
630 jiffies_msec = jiffies_to_msecs(jiffies);
632 "%08dms PS/2 packets: %02x, %02x, %02x, %02x\n",
633 jiffies_msec, packet[0], packet[1], packet[2], packet[3]);
635 if (jiffies_msec - ps2_last_second > 1000) {
636 psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
638 ps2_last_second = jiffies_msec;
642 static void fsp_packet_debug(unsigned char packet[])
647 static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
649 struct input_dev *dev = psmouse->dev;
650 struct fsp_data *ad = psmouse->private;
651 unsigned char *packet = psmouse->packet;
652 unsigned char button_status = 0, lscroll = 0, rscroll = 0;
655 if (psmouse->pktcnt < 4)
656 return PSMOUSE_GOOD_DATA;
659 * Full packet accumulated, process it
662 switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
663 case FSP_PKT_TYPE_ABS:
664 dev_warn(&psmouse->ps2dev.serio->dev,
665 "Unexpected absolute mode packet, ignored.\n");
668 case FSP_PKT_TYPE_NORMAL_OPC:
669 /* on-pad click, filter it if necessary */
670 if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
671 packet[0] &= ~BIT(0);
674 case FSP_PKT_TYPE_NORMAL:
676 /* special packet data translation from on-pad packets */
677 if (packet[3] != 0) {
678 if (packet[3] & BIT(0))
679 button_status |= 0x01; /* wheel down */
680 if (packet[3] & BIT(1))
681 button_status |= 0x0f; /* wheel up */
682 if (packet[3] & BIT(2))
683 button_status |= BIT(4);/* horizontal left */
684 if (packet[3] & BIT(3))
685 button_status |= BIT(5);/* horizontal right */
686 /* push back to packet queue */
687 if (button_status != 0)
688 packet[3] = button_status;
689 rscroll = (packet[3] >> 4) & 1;
690 lscroll = (packet[3] >> 5) & 1;
693 * Processing wheel up/down and extra button events
695 input_report_rel(dev, REL_WHEEL,
696 (int)(packet[3] & 8) - (int)(packet[3] & 7));
697 input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
698 input_report_key(dev, BTN_BACK, lscroll);
699 input_report_key(dev, BTN_FORWARD, rscroll);
702 * Standard PS/2 Mouse
704 input_report_key(dev, BTN_LEFT, packet[0] & 1);
705 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
706 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
708 rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
709 rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
711 input_report_rel(dev, REL_X, rel_x);
712 input_report_rel(dev, REL_Y, rel_y);
718 fsp_packet_debug(packet);
720 return PSMOUSE_FULL_PACKET;
723 static int fsp_activate_protocol(struct psmouse *psmouse)
725 struct fsp_data *pad = psmouse->private;
726 struct ps2dev *ps2dev = &psmouse->ps2dev;
727 unsigned char param[2];
731 * Standard procedure to enter FSP Intellimouse mode
732 * (scrolling wheel, 4th and 5th buttons)
735 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
737 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
739 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
741 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
742 if (param[0] != 0x04) {
743 dev_err(&psmouse->ps2dev.serio->dev,
744 "Unable to enable 4 bytes packet format.\n");
748 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
749 dev_err(&psmouse->ps2dev.serio->dev,
750 "Unable to read SYSCTL5 register.\n");
754 val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
755 /* Ensure we are not in absolute mode */
756 val &= ~FSP_BIT_EN_PKT_G0;
757 if (pad->buttons == 0x06) {
758 /* Left/Middle/Right & Scroll Up/Down/Right/Left */
759 val |= FSP_BIT_EN_MSID6;
762 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
763 dev_err(&psmouse->ps2dev.serio->dev,
764 "Unable to set up required mode bits.\n");
769 * Enable OPC tags such that driver can tell the difference between
770 * on-pad and real button click
772 if (fsp_opc_tag_enable(psmouse, true))
773 dev_warn(&psmouse->ps2dev.serio->dev,
774 "Failed to enable OPC tag mode.\n");
776 /* Enable on-pad vertical and horizontal scrolling */
777 fsp_onpad_vscr(psmouse, true);
778 fsp_onpad_hscr(psmouse, true);
783 int fsp_detect(struct psmouse *psmouse, bool set_properties)
787 if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
793 if (set_properties) {
794 psmouse->vendor = "Sentelic";
795 psmouse->name = "FingerSensingPad";
801 static void fsp_reset(struct psmouse *psmouse)
803 fsp_opc_tag_enable(psmouse, false);
804 fsp_onpad_vscr(psmouse, false);
805 fsp_onpad_hscr(psmouse, false);
808 static void fsp_disconnect(struct psmouse *psmouse)
810 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
811 &fsp_attribute_group);
814 kfree(psmouse->private);
817 static int fsp_reconnect(struct psmouse *psmouse)
821 if (fsp_detect(psmouse, 0))
824 if (fsp_get_version(psmouse, &version))
827 if (fsp_activate_protocol(psmouse))
833 int fsp_init(struct psmouse *psmouse)
835 struct fsp_data *priv;
836 int ver, rev, buttons;
839 if (fsp_get_version(psmouse, &ver) ||
840 fsp_get_revision(psmouse, &rev) ||
841 fsp_get_buttons(psmouse, &buttons)) {
845 psmouse_info(psmouse,
846 "Finger Sensing Pad, hw: %d.%d.%d, sw: %s, buttons: %d\n",
847 ver >> 4, ver & 0x0F, rev, fsp_drv_ver, buttons & 7);
849 psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
855 priv->buttons = buttons;
857 /* enable on-pad click by default */
858 priv->flags |= FSPDRV_FLAG_EN_OPC;
860 /* Set up various supported input event bits */
861 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
862 __set_bit(BTN_BACK, psmouse->dev->keybit);
863 __set_bit(BTN_FORWARD, psmouse->dev->keybit);
864 __set_bit(REL_WHEEL, psmouse->dev->relbit);
865 __set_bit(REL_HWHEEL, psmouse->dev->relbit);
867 psmouse->protocol_handler = fsp_process_byte;
868 psmouse->disconnect = fsp_disconnect;
869 psmouse->reconnect = fsp_reconnect;
870 psmouse->cleanup = fsp_reset;
871 psmouse->pktsize = 4;
873 /* set default packet output based on number of buttons we found */
874 error = fsp_activate_protocol(psmouse);
878 error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
879 &fsp_attribute_group);
881 dev_err(&psmouse->ps2dev.serio->dev,
882 "Failed to create sysfs attributes (%d)", error);
889 kfree(psmouse->private);
890 psmouse->private = NULL;