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)
435 unsigned int reg, val;
439 reg = simple_strtoul(buf, &rest, 16);
440 if (rest == buf || *rest != ' ' || reg > 0xff)
443 retval = kstrtouint(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;
479 unsigned int reg, val;
482 err = kstrtouint(buf, 16, ®);
489 if (fsp_reg_read(psmouse, reg, &val))
498 PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
499 fsp_attr_show_getreg, fsp_attr_set_getreg);
501 static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
502 void *data, char *buf)
506 if (fsp_page_reg_read(psmouse, &val))
509 return sprintf(buf, "%02x\n", val);
512 static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
513 const char *buf, size_t count)
518 err = kstrtouint(buf, 16, &val);
525 if (fsp_page_reg_write(psmouse, val))
531 PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
532 fsp_attr_show_pagereg, fsp_attr_set_pagereg);
534 static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
535 void *data, char *buf)
537 struct fsp_data *pad = psmouse->private;
539 return sprintf(buf, "%d\n", pad->vscroll);
542 static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
543 const char *buf, size_t count)
548 err = kstrtouint(buf, 10, &val);
555 fsp_onpad_vscr(psmouse, val);
560 PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
561 fsp_attr_show_vscroll, fsp_attr_set_vscroll);
563 static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
564 void *data, char *buf)
566 struct fsp_data *pad = psmouse->private;
568 return sprintf(buf, "%d\n", pad->hscroll);
571 static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
572 const char *buf, size_t count)
577 err = kstrtouint(buf, 10, &val);
584 fsp_onpad_hscr(psmouse, val);
589 PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
590 fsp_attr_show_hscroll, fsp_attr_set_hscroll);
592 static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
593 void *data, char *buf)
595 struct fsp_data *pad = psmouse->private;
597 return sprintf(buf, "%c\n",
598 pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
601 static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
602 const char *buf, size_t count)
604 struct fsp_data *pad = psmouse->private;
607 for (i = 0; i < count; i++) {
610 pad->flags |= FSPDRV_FLAG_EN_OPC;
613 pad->flags &= ~FSPDRV_FLAG_EN_OPC;
622 PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
623 fsp_attr_show_flags, fsp_attr_set_flags);
625 static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
626 void *data, char *buf)
628 return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
631 PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
633 static struct attribute *fsp_attributes[] = {
634 &psmouse_attr_setreg.dattr.attr,
635 &psmouse_attr_getreg.dattr.attr,
636 &psmouse_attr_page.dattr.attr,
637 &psmouse_attr_vscroll.dattr.attr,
638 &psmouse_attr_hscroll.dattr.attr,
639 &psmouse_attr_flags.dattr.attr,
640 &psmouse_attr_ver.dattr.attr,
644 static struct attribute_group fsp_attribute_group = {
645 .attrs = fsp_attributes,
649 static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
651 static unsigned int ps2_packet_cnt;
652 static unsigned int ps2_last_second;
653 unsigned int jiffies_msec;
654 const char *packet_type = "UNKNOWN";
655 unsigned short abs_x = 0, abs_y = 0;
657 /* Interpret & dump the packet data. */
658 switch (packet[0] >> FSP_PKT_TYPE_SHIFT) {
659 case FSP_PKT_TYPE_ABS:
660 packet_type = "Absolute";
661 abs_x = GET_ABS_X(packet);
662 abs_y = GET_ABS_Y(packet);
664 case FSP_PKT_TYPE_NORMAL:
665 packet_type = "Normal";
667 case FSP_PKT_TYPE_NOTIFY:
668 packet_type = "Notify";
670 case FSP_PKT_TYPE_NORMAL_OPC:
671 packet_type = "Normal-OPC";
676 jiffies_msec = jiffies_to_msecs(jiffies);
678 "%08dms %s packets: %02x, %02x, %02x, %02x; "
679 "abs_x: %d, abs_y: %d\n",
680 jiffies_msec, packet_type,
681 packet[0], packet[1], packet[2], packet[3], abs_x, abs_y);
683 if (jiffies_msec - ps2_last_second > 1000) {
684 psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
686 ps2_last_second = jiffies_msec;
690 static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
695 static void fsp_set_slot(struct input_dev *dev, int slot, bool active,
696 unsigned int x, unsigned int y)
698 input_mt_slot(dev, slot);
699 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
701 input_report_abs(dev, ABS_MT_POSITION_X, x);
702 input_report_abs(dev, ABS_MT_POSITION_Y, y);
706 static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
708 struct input_dev *dev = psmouse->dev;
709 struct fsp_data *ad = psmouse->private;
710 unsigned char *packet = psmouse->packet;
711 unsigned char button_status = 0, lscroll = 0, rscroll = 0;
712 unsigned short abs_x, abs_y, fgrs = 0;
715 if (psmouse->pktcnt < 4)
716 return PSMOUSE_GOOD_DATA;
719 * Full packet accumulated, process it
722 fsp_packet_debug(psmouse, packet);
724 switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
725 case FSP_PKT_TYPE_ABS:
727 if ((packet[0] == 0x48 || packet[0] == 0x49) &&
728 packet[1] == 0 && packet[2] == 0) {
730 * Ignore coordinate noise when finger leaving the
731 * surface, otherwise cursor may jump to upper-left
737 abs_x = GET_ABS_X(packet);
738 abs_y = GET_ABS_Y(packet);
740 if (packet[0] & FSP_PB0_MFMC) {
742 * MFMC packet: assume that there are two fingers on
748 if (packet[0] & FSP_PB0_MFMC_FGR2) {
750 if (ad->last_mt_fgr == 2) {
752 * workaround for buggy firmware
753 * which doesn't clear MFMC bit if
754 * the 1st finger is up
757 fsp_set_slot(dev, 0, false, 0, 0);
761 fsp_set_slot(dev, 1, fgrs == 2, abs_x, abs_y);
764 if (ad->last_mt_fgr == 1) {
766 * workaround for buggy firmware
767 * which doesn't clear MFMC bit if
768 * the 2nd finger is up
771 fsp_set_slot(dev, 1, false, 0, 0);
774 fsp_set_slot(dev, 0, fgrs != 0, abs_x, abs_y);
778 if ((packet[0] & (FSP_PB0_LBTN|FSP_PB0_PHY_BTN)) ==
780 /* On-pad click in SFAC mode should be handled
781 * by userspace. On-pad clicks in MFMC mode
782 * are real clickpad clicks, and not ignored.
784 packet[0] &= ~FSP_PB0_LBTN;
787 /* no multi-finger information */
790 if (abs_x != 0 && abs_y != 0)
793 fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
794 fsp_set_slot(dev, 1, false, 0, 0);
796 if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
797 input_report_abs(dev, ABS_X, abs_x);
798 input_report_abs(dev, ABS_Y, abs_y);
800 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
801 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
802 input_report_key(dev, BTN_TOUCH, fgrs);
803 input_report_key(dev, BTN_TOOL_FINGER, fgrs == 1);
804 input_report_key(dev, BTN_TOOL_DOUBLETAP, fgrs == 2);
807 case FSP_PKT_TYPE_NORMAL_OPC:
808 /* on-pad click, filter it if necessary */
809 if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
810 packet[0] &= ~FSP_PB0_LBTN;
813 case FSP_PKT_TYPE_NORMAL:
815 /* special packet data translation from on-pad packets */
816 if (packet[3] != 0) {
817 if (packet[3] & BIT(0))
818 button_status |= 0x01; /* wheel down */
819 if (packet[3] & BIT(1))
820 button_status |= 0x0f; /* wheel up */
821 if (packet[3] & BIT(2))
822 button_status |= BIT(4);/* horizontal left */
823 if (packet[3] & BIT(3))
824 button_status |= BIT(5);/* horizontal right */
825 /* push back to packet queue */
826 if (button_status != 0)
827 packet[3] = button_status;
828 rscroll = (packet[3] >> 4) & 1;
829 lscroll = (packet[3] >> 5) & 1;
832 * Processing wheel up/down and extra button events
834 input_report_rel(dev, REL_WHEEL,
835 (int)(packet[3] & 8) - (int)(packet[3] & 7));
836 input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
837 input_report_key(dev, BTN_BACK, lscroll);
838 input_report_key(dev, BTN_FORWARD, rscroll);
841 * Standard PS/2 Mouse
843 input_report_key(dev, BTN_LEFT, packet[0] & 1);
844 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
845 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
847 rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
848 rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
850 input_report_rel(dev, REL_X, rel_x);
851 input_report_rel(dev, REL_Y, rel_y);
857 return PSMOUSE_FULL_PACKET;
860 static int fsp_activate_protocol(struct psmouse *psmouse)
862 struct fsp_data *pad = psmouse->private;
863 struct ps2dev *ps2dev = &psmouse->ps2dev;
864 unsigned char param[2];
868 * Standard procedure to enter FSP Intellimouse mode
869 * (scrolling wheel, 4th and 5th buttons)
872 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
874 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
876 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
878 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
879 if (param[0] != 0x04) {
881 "Unable to enable 4 bytes packet format.\n");
885 if (pad->ver < FSP_VER_STL3888_C0) {
886 /* Preparing relative coordinates output for older hardware */
887 if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
889 "Unable to read SYSCTL5 register.\n");
893 if (fsp_get_buttons(psmouse, &pad->buttons)) {
895 "Unable to retrieve number of buttons.\n");
899 val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
900 /* Ensure we are not in absolute mode */
901 val &= ~FSP_BIT_EN_PKT_G0;
902 if (pad->buttons == 0x06) {
903 /* Left/Middle/Right & Scroll Up/Down/Right/Left */
904 val |= FSP_BIT_EN_MSID6;
907 if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
909 "Unable to set up required mode bits.\n");
914 * Enable OPC tags such that driver can tell the difference
915 * between on-pad and real button click
917 if (fsp_opc_tag_enable(psmouse, true))
918 psmouse_warn(psmouse,
919 "Failed to enable OPC tag mode.\n");
920 /* enable on-pad click by default */
921 pad->flags |= FSPDRV_FLAG_EN_OPC;
923 /* Enable on-pad vertical and horizontal scrolling */
924 fsp_onpad_vscr(psmouse, true);
925 fsp_onpad_hscr(psmouse, true);
927 /* Enable absolute coordinates output for Cx/Dx hardware */
928 if (fsp_reg_write(psmouse, FSP_REG_SWC1,
929 FSP_BIT_SWC1_EN_ABS_1F |
930 FSP_BIT_SWC1_EN_ABS_2F |
931 FSP_BIT_SWC1_EN_FUP_OUT |
932 FSP_BIT_SWC1_EN_ABS_CON)) {
934 "Unable to enable absolute coordinates output.\n");
942 static int fsp_set_input_params(struct psmouse *psmouse)
944 struct input_dev *dev = psmouse->dev;
945 struct fsp_data *pad = psmouse->private;
947 if (pad->ver < FSP_VER_STL3888_C0) {
948 __set_bit(BTN_MIDDLE, dev->keybit);
949 __set_bit(BTN_BACK, dev->keybit);
950 __set_bit(BTN_FORWARD, dev->keybit);
951 __set_bit(REL_WHEEL, dev->relbit);
952 __set_bit(REL_HWHEEL, dev->relbit);
955 * Hardware prior to Cx performs much better in relative mode;
956 * hence, only enable absolute coordinates output as well as
957 * multi-touch output for the newer hardware.
959 * Maximum coordinates can be computed as:
961 * number of scanlines * 64 - 57
963 * where number of X/Y scanline lines are 16/12.
965 int abs_x = 967, abs_y = 711;
967 __set_bit(EV_ABS, dev->evbit);
968 __clear_bit(EV_REL, dev->evbit);
969 __set_bit(BTN_TOUCH, dev->keybit);
970 __set_bit(BTN_TOOL_FINGER, dev->keybit);
971 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
972 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
974 input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0);
975 input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0);
976 input_mt_init_slots(dev, 2, 0);
977 input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0);
978 input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0);
984 int fsp_detect(struct psmouse *psmouse, bool set_properties)
988 if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
994 if (set_properties) {
995 psmouse->vendor = "Sentelic";
996 psmouse->name = "FingerSensingPad";
1002 static void fsp_reset(struct psmouse *psmouse)
1004 fsp_opc_tag_enable(psmouse, false);
1005 fsp_onpad_vscr(psmouse, false);
1006 fsp_onpad_hscr(psmouse, false);
1009 static void fsp_disconnect(struct psmouse *psmouse)
1011 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
1012 &fsp_attribute_group);
1015 kfree(psmouse->private);
1018 static int fsp_reconnect(struct psmouse *psmouse)
1022 if (fsp_detect(psmouse, 0))
1025 if (fsp_get_version(psmouse, &version))
1028 if (fsp_activate_protocol(psmouse))
1034 int fsp_init(struct psmouse *psmouse)
1036 struct fsp_data *priv;
1037 int ver, rev, sn = 0;
1040 if (fsp_get_version(psmouse, &ver) ||
1041 fsp_get_revision(psmouse, &rev)) {
1044 if (ver >= FSP_VER_STL3888_C0) {
1045 /* firmware information is only available since C0 */
1046 fsp_get_sn(psmouse, &sn);
1049 psmouse_info(psmouse,
1050 "Finger Sensing Pad, hw: %d.%d.%d, sn: %x, sw: %s\n",
1051 ver >> 4, ver & 0x0F, rev, sn, fsp_drv_ver);
1053 psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
1060 psmouse->protocol_handler = fsp_process_byte;
1061 psmouse->disconnect = fsp_disconnect;
1062 psmouse->reconnect = fsp_reconnect;
1063 psmouse->cleanup = fsp_reset;
1064 psmouse->pktsize = 4;
1066 error = fsp_activate_protocol(psmouse);
1070 /* Set up various supported input event bits */
1071 error = fsp_set_input_params(psmouse);
1075 error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
1076 &fsp_attribute_group);
1078 psmouse_err(psmouse,
1079 "Failed to create sysfs attributes (%d)", error);
1086 kfree(psmouse->private);
1087 psmouse->private = NULL;