2 * Finger Sensing Pad PS/2 mouse driver.
4 * Copyright (C) 2005-2007 Asia Vital Components Co., Ltd.
5 * Copyright (C) 2005-2012 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/input/mt.h>
25 #include <linux/ctype.h>
26 #include <linux/libps2.h>
27 #include <linux/serio.h>
28 #include <linux/jiffies.h>
29 #include <linux/slab.h>
35 * Timeout for FSP PS/2 command only (in milliseconds).
37 #define FSP_CMD_TIMEOUT 200
38 #define FSP_CMD_TIMEOUT2 30
40 #define GET_ABS_X(packet) ((packet[1] << 2) | ((packet[3] >> 2) & 0x03))
41 #define GET_ABS_Y(packet) ((packet[2] << 2) | (packet[3] & 0x03))
43 /** Driver version. */
44 static const char fsp_drv_ver[] = "1.1.0-K";
47 * Make sure that the value being sent to FSP will not conflict with
48 * possible sample rate values.
50 static unsigned char fsp_test_swap_cmd(unsigned char reg_val)
53 case 10: case 20: case 40: case 60: case 80: case 100: case 200:
55 * The requested value being sent to FSP matched to possible
56 * sample rates, swap the given value such that the hardware
57 * wouldn't get confused.
59 return (reg_val >> 4) | (reg_val << 4);
61 return reg_val; /* swap isn't necessary */
66 * Make sure that the value being sent to FSP will not conflict with certain
69 static unsigned char fsp_test_invert_cmd(unsigned char reg_val)
72 case 0xe9: case 0xee: case 0xf2: case 0xff:
74 * The requested value being sent to FSP matched to certain
75 * commands, inverse the given value such that the hardware
76 * wouldn't get confused.
80 return reg_val; /* inversion isn't necessary */
84 static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val)
86 struct ps2dev *ps2dev = &psmouse->ps2dev;
87 unsigned char param[3];
92 * We need to shut off the device and switch it into command
93 * mode so we don't confuse our protocol handler. We don't need
94 * to do that for writes because sysfs set helper does this for
97 psmouse_deactivate(psmouse);
99 ps2_begin_command(ps2dev);
101 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
104 /* should return 0xfe(request for resending) */
105 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
106 /* should return 0xfc(failed) */
107 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
109 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
112 if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
113 ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2);
114 } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
115 /* swapping is required */
116 ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2);
119 /* swapping isn't necessary */
120 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
123 /* should return 0xfc(failed) */
124 ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT);
126 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0)
133 ps2_end_command(ps2dev);
134 psmouse_activate(psmouse);
136 "READ REG: 0x%02x is 0x%02x (rc = %d)\n",
137 reg_addr, *reg_val, rc);
141 static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val)
143 struct ps2dev *ps2dev = &psmouse->ps2dev;
147 ps2_begin_command(ps2dev);
149 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
152 if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
153 /* inversion is required */
154 ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2);
156 if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
157 /* swapping is required */
158 ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2);
160 /* swapping isn't necessary */
161 ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2);
164 /* write the register address in correct order */
165 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
167 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
170 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
171 /* inversion is required */
172 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
173 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
174 /* swapping is required */
175 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
177 /* swapping isn't necessary */
178 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
181 /* write the register value in correct order */
182 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
186 ps2_end_command(ps2dev);
188 "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n",
189 reg_addr, reg_val, rc);
193 /* Enable register clock gating for writing certain registers */
194 static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable)
198 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1)
202 nv = v | FSP_BIT_EN_REG_CLK;
204 nv = v & ~FSP_BIT_EN_REG_CLK;
206 /* only write if necessary */
208 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1)
214 static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val)
216 struct ps2dev *ps2dev = &psmouse->ps2dev;
217 unsigned char param[3];
220 psmouse_deactivate(psmouse);
222 ps2_begin_command(ps2dev);
224 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
227 ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
228 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
230 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
233 ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2);
234 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
236 /* get the returned result */
237 if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
244 ps2_end_command(ps2dev);
245 psmouse_activate(psmouse);
247 "READ PAGE REG: 0x%02x (rc = %d)\n",
252 static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val)
254 struct ps2dev *ps2dev = &psmouse->ps2dev;
258 ps2_begin_command(ps2dev);
260 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
263 ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2);
264 ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
266 if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
269 if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
270 ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
271 } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
272 /* swapping is required */
273 ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
275 /* swapping isn't necessary */
276 ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
279 ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
283 ps2_end_command(ps2dev);
285 "WRITE PAGE REG: to 0x%02x (rc = %d)\n",
290 static int fsp_get_version(struct psmouse *psmouse, int *version)
292 if (fsp_reg_read(psmouse, FSP_REG_VERSION, version))
298 static int fsp_get_revision(struct psmouse *psmouse, int *rev)
300 if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev))
306 static int fsp_get_sn(struct psmouse *psmouse, int *sn)
311 /* production number since Cx is available at: 0x0b40 ~ 0x0b42 */
312 if (fsp_page_reg_write(psmouse, FSP_PAGE_0B))
314 if (fsp_reg_read(psmouse, FSP_REG_SN0, &v0))
316 if (fsp_reg_read(psmouse, FSP_REG_SN1, &v1))
318 if (fsp_reg_read(psmouse, FSP_REG_SN2, &v2))
320 *sn = (v0 << 16) | (v1 << 8) | v2;
323 fsp_page_reg_write(psmouse, FSP_PAGE_DEFAULT);
327 static int fsp_get_buttons(struct psmouse *psmouse, int *btn)
329 static const int buttons[] = {
330 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */
331 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */
332 0x04, /* Left/Middle/Right & Scroll Up/Down */
333 0x02, /* Left/Middle/Right */
337 if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS, &val) == -1)
340 *btn = buttons[(val & 0x30) >> 4];
344 /* Enable on-pad command tag output */
345 static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable)
350 if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) {
351 psmouse_err(psmouse, "Unable get OPC state.\n");
356 nv = v | FSP_BIT_EN_OPC_TAG;
358 nv = v & ~FSP_BIT_EN_OPC_TAG;
360 /* only write if necessary */
362 fsp_reg_write_enable(psmouse, true);
363 res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv);
364 fsp_reg_write_enable(psmouse, false);
368 psmouse_err(psmouse, "Unable to enable OPC tag.\n");
375 static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable)
377 struct fsp_data *pad = psmouse->private;
380 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
383 pad->vscroll = enable;
386 val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE);
388 val &= ~FSP_BIT_FIX_VSCR;
390 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
396 static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable)
398 struct fsp_data *pad = psmouse->private;
401 if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
404 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2))
407 pad->hscroll = enable;
410 val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE);
411 v2 |= FSP_BIT_EN_MSID6;
413 val &= ~FSP_BIT_FIX_HSCR;
414 v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8);
417 if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
420 /* reconfigure horizontal scrolling packet output */
421 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2))
428 * Write device specific initial parameters.
430 * ex: 0xab 0xcd - write oxcd into register 0xab
432 static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data,
433 const char *buf, size_t count)
439 reg = simple_strtoul(buf, &rest, 16);
440 if (rest == buf || *rest != ' ' || reg > 0xff)
443 retval = kstrtoint(rest + 1, 16, &val);
450 if (fsp_reg_write_enable(psmouse, true))
453 retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count;
455 fsp_reg_write_enable(psmouse, false);
460 PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg);
462 static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse,
463 void *data, char *buf)
465 struct fsp_data *pad = psmouse->private;
467 return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val);
471 * Read a register from device.
473 * ex: 0xab -- read content from register 0xab
475 static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data,
476 const char *buf, size_t count)
478 struct fsp_data *pad = psmouse->private;
481 err = kstrtoint(buf, 16, ®);
488 if (fsp_reg_read(psmouse, reg, &val))
497 PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
498 fsp_attr_show_getreg, fsp_attr_set_getreg);
500 static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
501 void *data, char *buf)
505 if (fsp_page_reg_read(psmouse, &val))
508 return sprintf(buf, "%02x\n", val);
511 static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
512 const char *buf, size_t count)
516 err = kstrtoint(buf, 16, &val);
523 if (fsp_page_reg_write(psmouse, val))
529 PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
530 fsp_attr_show_pagereg, fsp_attr_set_pagereg);
532 static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
533 void *data, char *buf)
535 struct fsp_data *pad = psmouse->private;
537 return sprintf(buf, "%d\n", pad->vscroll);
540 static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
541 const char *buf, size_t count)
546 err = kstrtouint(buf, 10, &val);
553 fsp_onpad_vscr(psmouse, val);
558 PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
559 fsp_attr_show_vscroll, fsp_attr_set_vscroll);
561 static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
562 void *data, char *buf)
564 struct fsp_data *pad = psmouse->private;
566 return sprintf(buf, "%d\n", pad->hscroll);
569 static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
570 const char *buf, size_t count)
575 err = kstrtouint(buf, 10, &val);
582 fsp_onpad_hscr(psmouse, val);
587 PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
588 fsp_attr_show_hscroll, fsp_attr_set_hscroll);
590 static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
591 void *data, char *buf)
593 struct fsp_data *pad = psmouse->private;
595 return sprintf(buf, "%c\n",
596 pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
599 static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
600 const char *buf, size_t count)
602 struct fsp_data *pad = psmouse->private;
605 for (i = 0; i < count; i++) {
608 pad->flags |= FSPDRV_FLAG_EN_OPC;
611 pad->flags &= ~FSPDRV_FLAG_EN_OPC;
620 PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
621 fsp_attr_show_flags, fsp_attr_set_flags);
623 static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
624 void *data, char *buf)
626 return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
629 PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
631 static struct attribute *fsp_attributes[] = {
632 &psmouse_attr_setreg.dattr.attr,
633 &psmouse_attr_getreg.dattr.attr,
634 &psmouse_attr_page.dattr.attr,
635 &psmouse_attr_vscroll.dattr.attr,
636 &psmouse_attr_hscroll.dattr.attr,
637 &psmouse_attr_flags.dattr.attr,
638 &psmouse_attr_ver.dattr.attr,
642 static struct attribute_group fsp_attribute_group = {
643 .attrs = fsp_attributes,
647 static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
649 static unsigned int ps2_packet_cnt;
650 static unsigned int ps2_last_second;
651 unsigned int jiffies_msec;
652 const char *packet_type = "UNKNOWN";
653 unsigned short abs_x = 0, abs_y = 0;
655 /* Interpret & dump the packet data. */
656 switch (packet[0] >> FSP_PKT_TYPE_SHIFT) {
657 case FSP_PKT_TYPE_ABS:
658 packet_type = "Absolute";
659 abs_x = GET_ABS_X(packet);
660 abs_y = GET_ABS_Y(packet);
662 case FSP_PKT_TYPE_NORMAL:
663 packet_type = "Normal";
665 case FSP_PKT_TYPE_NOTIFY:
666 packet_type = "Notify";
668 case FSP_PKT_TYPE_NORMAL_OPC:
669 packet_type = "Normal-OPC";
674 jiffies_msec = jiffies_to_msecs(jiffies);
676 "%08dms %s packets: %02x, %02x, %02x, %02x; "
677 "abs_x: %d, abs_y: %d\n",
678 jiffies_msec, packet_type,
679 packet[0], packet[1], packet[2], packet[3], abs_x, abs_y);
681 if (jiffies_msec - ps2_last_second > 1000) {
682 psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
684 ps2_last_second = jiffies_msec;
688 static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
693 static void fsp_set_slot(struct input_dev *dev, int slot, bool active,
694 unsigned int x, unsigned int y)
696 input_mt_slot(dev, slot);
697 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
699 input_report_abs(dev, ABS_MT_POSITION_X, x);
700 input_report_abs(dev, ABS_MT_POSITION_Y, y);
704 static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
706 struct input_dev *dev = psmouse->dev;
707 struct fsp_data *ad = psmouse->private;
708 unsigned char *packet = psmouse->packet;
709 unsigned char button_status = 0, lscroll = 0, rscroll = 0;
710 unsigned short abs_x, abs_y, fgrs = 0;
713 if (psmouse->pktcnt < 4)
714 return PSMOUSE_GOOD_DATA;
717 * Full packet accumulated, process it
720 fsp_packet_debug(psmouse, packet);
722 switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
723 case FSP_PKT_TYPE_ABS:
725 if ((packet[0] == 0x48 || packet[0] == 0x49) &&
726 packet[1] == 0 && packet[2] == 0) {
728 * Ignore coordinate noise when finger leaving the
729 * surface, otherwise cursor may jump to upper-left
735 abs_x = GET_ABS_X(packet);
736 abs_y = GET_ABS_Y(packet);
738 if (packet[0] & FSP_PB0_MFMC) {
740 * MFMC packet: assume that there are two fingers on
746 if (packet[0] & FSP_PB0_MFMC_FGR2) {
748 if (ad->last_mt_fgr == 2) {
750 * workaround for buggy firmware
751 * which doesn't clear MFMC bit if
752 * the 1st finger is up
755 fsp_set_slot(dev, 0, false, 0, 0);
759 fsp_set_slot(dev, 1, fgrs == 2, abs_x, abs_y);
762 if (ad->last_mt_fgr == 1) {
764 * workaround for buggy firmware
765 * which doesn't clear MFMC bit if
766 * the 2nd finger is up
769 fsp_set_slot(dev, 1, false, 0, 0);
772 fsp_set_slot(dev, 0, fgrs != 0, abs_x, abs_y);
776 if ((packet[0] & (FSP_PB0_LBTN|FSP_PB0_PHY_BTN)) ==
778 /* On-pad click in SFAC mode should be handled
779 * by userspace. On-pad clicks in MFMC mode
780 * are real clickpad clicks, and not ignored.
782 packet[0] &= ~FSP_PB0_LBTN;
785 /* no multi-finger information */
788 if (abs_x != 0 && abs_y != 0)
791 fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
792 fsp_set_slot(dev, 1, false, 0, 0);
794 if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
795 input_report_abs(dev, ABS_X, abs_x);
796 input_report_abs(dev, ABS_Y, abs_y);
798 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
799 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
800 input_report_key(dev, BTN_TOUCH, fgrs);
801 input_report_key(dev, BTN_TOOL_FINGER, fgrs == 1);
802 input_report_key(dev, BTN_TOOL_DOUBLETAP, fgrs == 2);
805 case FSP_PKT_TYPE_NORMAL_OPC:
806 /* on-pad click, filter it if necessary */
807 if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
808 packet[0] &= ~FSP_PB0_LBTN;
811 case FSP_PKT_TYPE_NORMAL:
813 /* special packet data translation from on-pad packets */
814 if (packet[3] != 0) {
815 if (packet[3] & BIT(0))
816 button_status |= 0x01; /* wheel down */
817 if (packet[3] & BIT(1))
818 button_status |= 0x0f; /* wheel up */
819 if (packet[3] & BIT(2))
820 button_status |= BIT(4);/* horizontal left */
821 if (packet[3] & BIT(3))
822 button_status |= BIT(5);/* horizontal right */
823 /* push back to packet queue */
824 if (button_status != 0)
825 packet[3] = button_status;
826 rscroll = (packet[3] >> 4) & 1;
827 lscroll = (packet[3] >> 5) & 1;
830 * Processing wheel up/down and extra button events
832 input_report_rel(dev, REL_WHEEL,
833 (int)(packet[3] & 8) - (int)(packet[3] & 7));
834 input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
835 input_report_key(dev, BTN_BACK, lscroll);
836 input_report_key(dev, BTN_FORWARD, rscroll);
839 * Standard PS/2 Mouse
841 input_report_key(dev, BTN_LEFT, packet[0] & 1);
842 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
843 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
845 rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
846 rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
848 input_report_rel(dev, REL_X, rel_x);
849 input_report_rel(dev, REL_Y, rel_y);
855 return PSMOUSE_FULL_PACKET;
858 static int fsp_activate_protocol(struct psmouse *psmouse)
860 struct fsp_data *pad = psmouse->private;
861 struct ps2dev *ps2dev = &psmouse->ps2dev;
862 unsigned char param[2];
866 * Standard procedure to enter FSP Intellimouse mode
867 * (scrolling wheel, 4th and 5th buttons)
870 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
872 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
874 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
876 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
877 if (param[0] != 0x04) {
879 "Unable to enable 4 bytes packet format.\n");
883 if (pad->ver < FSP_VER_STL3888_C0) {
884 /* Preparing relative coordinates output for older hardware */
885 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
887 "Unable to read SYSCTL5 register.\n");
891 if (fsp_get_buttons(psmouse, &pad->buttons)) {
893 "Unable to retrieve number of buttons.\n");
897 val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
898 /* Ensure we are not in absolute mode */
899 val &= ~FSP_BIT_EN_PKT_G0;
900 if (pad->buttons == 0x06) {
901 /* Left/Middle/Right & Scroll Up/Down/Right/Left */
902 val |= FSP_BIT_EN_MSID6;
905 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
907 "Unable to set up required mode bits.\n");
912 * Enable OPC tags such that driver can tell the difference
913 * between on-pad and real button click
915 if (fsp_opc_tag_enable(psmouse, true))
916 psmouse_warn(psmouse,
917 "Failed to enable OPC tag mode.\n");
918 /* enable on-pad click by default */
919 pad->flags |= FSPDRV_FLAG_EN_OPC;
921 /* Enable on-pad vertical and horizontal scrolling */
922 fsp_onpad_vscr(psmouse, true);
923 fsp_onpad_hscr(psmouse, true);
925 /* Enable absolute coordinates output for Cx/Dx hardware */
926 if (fsp_reg_write(psmouse, FSP_REG_SWC1,
927 FSP_BIT_SWC1_EN_ABS_1F |
928 FSP_BIT_SWC1_EN_ABS_2F |
929 FSP_BIT_SWC1_EN_FUP_OUT |
930 FSP_BIT_SWC1_EN_ABS_CON)) {
932 "Unable to enable absolute coordinates output.\n");
940 static int fsp_set_input_params(struct psmouse *psmouse)
942 struct input_dev *dev = psmouse->dev;
943 struct fsp_data *pad = psmouse->private;
945 if (pad->ver < FSP_VER_STL3888_C0) {
946 __set_bit(BTN_MIDDLE, dev->keybit);
947 __set_bit(BTN_BACK, dev->keybit);
948 __set_bit(BTN_FORWARD, dev->keybit);
949 __set_bit(REL_WHEEL, dev->relbit);
950 __set_bit(REL_HWHEEL, dev->relbit);
953 * Hardware prior to Cx performs much better in relative mode;
954 * hence, only enable absolute coordinates output as well as
955 * multi-touch output for the newer hardware.
957 * Maximum coordinates can be computed as:
959 * number of scanlines * 64 - 57
961 * where number of X/Y scanline lines are 16/12.
963 int abs_x = 967, abs_y = 711;
965 __set_bit(EV_ABS, dev->evbit);
966 __clear_bit(EV_REL, dev->evbit);
967 __set_bit(BTN_TOUCH, dev->keybit);
968 __set_bit(BTN_TOOL_FINGER, dev->keybit);
969 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
970 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
972 input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0);
973 input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0);
974 input_mt_init_slots(dev, 2, 0);
975 input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0);
976 input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0);
982 int fsp_detect(struct psmouse *psmouse, bool set_properties)
986 if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
992 if (set_properties) {
993 psmouse->vendor = "Sentelic";
994 psmouse->name = "FingerSensingPad";
1000 static void fsp_reset(struct psmouse *psmouse)
1002 fsp_opc_tag_enable(psmouse, false);
1003 fsp_onpad_vscr(psmouse, false);
1004 fsp_onpad_hscr(psmouse, false);
1007 static void fsp_disconnect(struct psmouse *psmouse)
1009 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
1010 &fsp_attribute_group);
1013 kfree(psmouse->private);
1016 static int fsp_reconnect(struct psmouse *psmouse)
1020 if (fsp_detect(psmouse, 0))
1023 if (fsp_get_version(psmouse, &version))
1026 if (fsp_activate_protocol(psmouse))
1032 int fsp_init(struct psmouse *psmouse)
1034 struct fsp_data *priv;
1035 int ver, rev, sn = 0;
1038 if (fsp_get_version(psmouse, &ver) ||
1039 fsp_get_revision(psmouse, &rev)) {
1042 if (ver >= FSP_VER_STL3888_C0) {
1043 /* firmware information is only available since C0 */
1044 fsp_get_sn(psmouse, &sn);
1047 psmouse_info(psmouse,
1048 "Finger Sensing Pad, hw: %d.%d.%d, sn: %x, sw: %s\n",
1049 ver >> 4, ver & 0x0F, rev, sn, fsp_drv_ver);
1051 psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
1058 psmouse->protocol_handler = fsp_process_byte;
1059 psmouse->disconnect = fsp_disconnect;
1060 psmouse->reconnect = fsp_reconnect;
1061 psmouse->cleanup = fsp_reset;
1062 psmouse->pktsize = 4;
1064 error = fsp_activate_protocol(psmouse);
1068 /* Set up various supported input event bits */
1069 error = fsp_set_input_params(psmouse);
1073 error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
1074 &fsp_attribute_group);
1076 psmouse_err(psmouse,
1077 "Failed to create sysfs attributes (%d)", error);
1084 kfree(psmouse->private);
1085 psmouse->private = NULL;