[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/input/mouse/sentelic.c b/src/kernel/linux/v4.14/drivers/input/mouse/sentelic.c
new file mode 100644
index 0000000..779d0b9
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/input/mouse/sentelic.c
@@ -0,0 +1,1089 @@
+/*-
+ * Finger Sensing Pad PS/2 mouse driver.
+ *
+ * Copyright (C) 2005-2007 Asia Vital Components Co., Ltd.
+ * Copyright (C) 2005-2012 Tai-hwa Liang, Sentelic Corporation.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/ctype.h>
+#include <linux/libps2.h>
+#include <linux/serio.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+
+#include "psmouse.h"
+#include "sentelic.h"
+
+/*
+ * Timeout for FSP PS/2 command only (in milliseconds).
+ */
+#define FSP_CMD_TIMEOUT 200
+#define FSP_CMD_TIMEOUT2 30
+
+#define GET_ABS_X(packet) ((packet[1] << 2) | ((packet[3] >> 2) & 0x03))
+#define GET_ABS_Y(packet) ((packet[2] << 2) | (packet[3] & 0x03))
+
+/** Driver version. */
+static const char fsp_drv_ver[] = "1.1.0-K";
+
+/*
+ * Make sure that the value being sent to FSP will not conflict with
+ * possible sample rate values.
+ */
+static unsigned char fsp_test_swap_cmd(unsigned char reg_val)
+{
+ switch (reg_val) {
+ case 10: case 20: case 40: case 60: case 80: case 100: case 200:
+ /*
+ * The requested value being sent to FSP matched to possible
+ * sample rates, swap the given value such that the hardware
+ * wouldn't get confused.
+ */
+ return (reg_val >> 4) | (reg_val << 4);
+ default:
+ return reg_val; /* swap isn't necessary */
+ }
+}
+
+/*
+ * Make sure that the value being sent to FSP will not conflict with certain
+ * commands.
+ */
+static unsigned char fsp_test_invert_cmd(unsigned char reg_val)
+{
+ switch (reg_val) {
+ case 0xe9: case 0xee: case 0xf2: case 0xff:
+ /*
+ * The requested value being sent to FSP matched to certain
+ * commands, inverse the given value such that the hardware
+ * wouldn't get confused.
+ */
+ return ~reg_val;
+ default:
+ return reg_val; /* inversion isn't necessary */
+ }
+}
+
+static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[3];
+ unsigned char addr;
+ int rc = -1;
+
+ /*
+ * We need to shut off the device and switch it into command
+ * mode so we don't confuse our protocol handler. We don't need
+ * to do that for writes because sysfs set helper does this for
+ * us.
+ */
+ psmouse_deactivate(psmouse);
+
+ ps2_begin_command(ps2dev);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ /* should return 0xfe(request for resending) */
+ ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
+ /* should return 0xfc(failed) */
+ ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
+ ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2);
+ } else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
+ /* swapping is required */
+ ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2);
+ /* expect 0xfe */
+ } else {
+ /* swapping isn't necessary */
+ ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
+ /* expect 0xfe */
+ }
+ /* should return 0xfc(failed) */
+ ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT);
+
+ if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0)
+ goto out;
+
+ *reg_val = param[2];
+ rc = 0;
+
+ out:
+ ps2_end_command(ps2dev);
+ psmouse_activate(psmouse);
+ psmouse_dbg(psmouse,
+ "READ REG: 0x%02x is 0x%02x (rc = %d)\n",
+ reg_addr, *reg_val, rc);
+ return rc;
+}
+
+static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char v;
+ int rc = -1;
+
+ ps2_begin_command(ps2dev);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
+ /* inversion is required */
+ ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2);
+ } else {
+ if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
+ /* swapping is required */
+ ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2);
+ } else {
+ /* swapping isn't necessary */
+ ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2);
+ }
+ }
+ /* write the register address in correct order */
+ ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
+ /* inversion is required */
+ ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
+ } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
+ /* swapping is required */
+ ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
+ } else {
+ /* swapping isn't necessary */
+ ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
+ }
+
+ /* write the register value in correct order */
+ ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
+ rc = 0;
+
+ out:
+ ps2_end_command(ps2dev);
+ psmouse_dbg(psmouse,
+ "WRITE REG: 0x%02x to 0x%02x (rc = %d)\n",
+ reg_addr, reg_val, rc);
+ return rc;
+}
+
+/* Enable register clock gating for writing certain registers */
+static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable)
+{
+ int v, nv;
+
+ if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1)
+ return -1;
+
+ if (enable)
+ nv = v | FSP_BIT_EN_REG_CLK;
+ else
+ nv = v & ~FSP_BIT_EN_REG_CLK;
+
+ /* only write if necessary */
+ if (nv != v)
+ if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1)
+ return -1;
+
+ return 0;
+}
+
+static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[3];
+ int rc = -1;
+
+ psmouse_deactivate(psmouse);
+
+ ps2_begin_command(ps2dev);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
+ ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2);
+ ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
+
+ /* get the returned result */
+ if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
+ goto out;
+
+ *reg_val = param[2];
+ rc = 0;
+
+ out:
+ ps2_end_command(ps2dev);
+ psmouse_activate(psmouse);
+ psmouse_dbg(psmouse,
+ "READ PAGE REG: 0x%02x (rc = %d)\n",
+ *reg_val, rc);
+ return rc;
+}
+
+static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char v;
+ int rc = -1;
+
+ ps2_begin_command(ps2dev);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2);
+ ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
+
+ if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
+ goto out;
+
+ if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
+ ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
+ } else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
+ /* swapping is required */
+ ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
+ } else {
+ /* swapping isn't necessary */
+ ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
+ }
+
+ ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
+ rc = 0;
+
+ out:
+ ps2_end_command(ps2dev);
+ psmouse_dbg(psmouse,
+ "WRITE PAGE REG: to 0x%02x (rc = %d)\n",
+ reg_val, rc);
+ return rc;
+}
+
+static int fsp_get_version(struct psmouse *psmouse, int *version)
+{
+ if (fsp_reg_read(psmouse, FSP_REG_VERSION, version))
+ return -EIO;
+
+ return 0;
+}
+
+static int fsp_get_revision(struct psmouse *psmouse, int *rev)
+{
+ if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev))
+ return -EIO;
+
+ return 0;
+}
+
+static int fsp_get_sn(struct psmouse *psmouse, int *sn)
+{
+ int v0, v1, v2;
+ int rc = -EIO;
+
+ /* production number since Cx is available at: 0x0b40 ~ 0x0b42 */
+ if (fsp_page_reg_write(psmouse, FSP_PAGE_0B))
+ goto out;
+ if (fsp_reg_read(psmouse, FSP_REG_SN0, &v0))
+ goto out;
+ if (fsp_reg_read(psmouse, FSP_REG_SN1, &v1))
+ goto out;
+ if (fsp_reg_read(psmouse, FSP_REG_SN2, &v2))
+ goto out;
+ *sn = (v0 << 16) | (v1 << 8) | v2;
+ rc = 0;
+out:
+ fsp_page_reg_write(psmouse, FSP_PAGE_DEFAULT);
+ return rc;
+}
+
+static int fsp_get_buttons(struct psmouse *psmouse, int *btn)
+{
+ static const int buttons[] = {
+ 0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */
+ 0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */
+ 0x04, /* Left/Middle/Right & Scroll Up/Down */
+ 0x02, /* Left/Middle/Right */
+ };
+ int val;
+
+ if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS, &val) == -1)
+ return -EIO;
+
+ *btn = buttons[(val & 0x30) >> 4];
+ return 0;
+}
+
+/* Enable on-pad command tag output */
+static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable)
+{
+ int v, nv;
+ int res = 0;
+
+ if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) {
+ psmouse_err(psmouse, "Unable get OPC state.\n");
+ return -EIO;
+ }
+
+ if (enable)
+ nv = v | FSP_BIT_EN_OPC_TAG;
+ else
+ nv = v & ~FSP_BIT_EN_OPC_TAG;
+
+ /* only write if necessary */
+ if (nv != v) {
+ fsp_reg_write_enable(psmouse, true);
+ res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv);
+ fsp_reg_write_enable(psmouse, false);
+ }
+
+ if (res != 0) {
+ psmouse_err(psmouse, "Unable to enable OPC tag.\n");
+ res = -EIO;
+ }
+
+ return res;
+}
+
+static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable)
+{
+ struct fsp_data *pad = psmouse->private;
+ int val;
+
+ if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
+ return -EIO;
+
+ pad->vscroll = enable;
+
+ if (enable)
+ val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE);
+ else
+ val &= ~FSP_BIT_FIX_VSCR;
+
+ if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
+ return -EIO;
+
+ return 0;
+}
+
+static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable)
+{
+ struct fsp_data *pad = psmouse->private;
+ int val, v2;
+
+ if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
+ return -EIO;
+
+ if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2))
+ return -EIO;
+
+ pad->hscroll = enable;
+
+ if (enable) {
+ val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE);
+ v2 |= FSP_BIT_EN_MSID6;
+ } else {
+ val &= ~FSP_BIT_FIX_HSCR;
+ v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8);
+ }
+
+ if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
+ return -EIO;
+
+ /* reconfigure horizontal scrolling packet output */
+ if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2))
+ return -EIO;
+
+ return 0;
+}
+
+/*
+ * Write device specific initial parameters.
+ *
+ * ex: 0xab 0xcd - write oxcd into register 0xab
+ */
+static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ unsigned int reg, val;
+ char *rest;
+ ssize_t retval;
+
+ reg = simple_strtoul(buf, &rest, 16);
+ if (rest == buf || *rest != ' ' || reg > 0xff)
+ return -EINVAL;
+
+ retval = kstrtouint(rest + 1, 16, &val);
+ if (retval)
+ return retval;
+
+ if (val > 0xff)
+ return -EINVAL;
+
+ if (fsp_reg_write_enable(psmouse, true))
+ return -EIO;
+
+ retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count;
+
+ fsp_reg_write_enable(psmouse, false);
+
+ return retval;
+}
+
+PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg);
+
+static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ struct fsp_data *pad = psmouse->private;
+
+ return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val);
+}
+
+/*
+ * Read a register from device.
+ *
+ * ex: 0xab -- read content from register 0xab
+ */
+static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ struct fsp_data *pad = psmouse->private;
+ unsigned int reg, val;
+ int err;
+
+ err = kstrtouint(buf, 16, ®);
+ if (err)
+ return err;
+
+ if (reg > 0xff)
+ return -EINVAL;
+
+ if (fsp_reg_read(psmouse, reg, &val))
+ return -EIO;
+
+ pad->last_reg = reg;
+ pad->last_val = val;
+
+ return count;
+}
+
+PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
+ fsp_attr_show_getreg, fsp_attr_set_getreg);
+
+static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ int val = 0;
+
+ if (fsp_page_reg_read(psmouse, &val))
+ return -EIO;
+
+ return sprintf(buf, "%02x\n", val);
+}
+
+static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ unsigned int val;
+ int err;
+
+ err = kstrtouint(buf, 16, &val);
+ if (err)
+ return err;
+
+ if (val > 0xff)
+ return -EINVAL;
+
+ if (fsp_page_reg_write(psmouse, val))
+ return -EIO;
+
+ return count;
+}
+
+PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
+ fsp_attr_show_pagereg, fsp_attr_set_pagereg);
+
+static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ struct fsp_data *pad = psmouse->private;
+
+ return sprintf(buf, "%d\n", pad->vscroll);
+}
+
+static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ unsigned int val;
+ int err;
+
+ err = kstrtouint(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (val > 1)
+ return -EINVAL;
+
+ fsp_onpad_vscr(psmouse, val);
+
+ return count;
+}
+
+PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
+ fsp_attr_show_vscroll, fsp_attr_set_vscroll);
+
+static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ struct fsp_data *pad = psmouse->private;
+
+ return sprintf(buf, "%d\n", pad->hscroll);
+}
+
+static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ unsigned int val;
+ int err;
+
+ err = kstrtouint(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (val > 1)
+ return -EINVAL;
+
+ fsp_onpad_hscr(psmouse, val);
+
+ return count;
+}
+
+PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
+ fsp_attr_show_hscroll, fsp_attr_set_hscroll);
+
+static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ struct fsp_data *pad = psmouse->private;
+
+ return sprintf(buf, "%c\n",
+ pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
+}
+
+static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ struct fsp_data *pad = psmouse->private;
+ size_t i;
+
+ for (i = 0; i < count; i++) {
+ switch (buf[i]) {
+ case 'C':
+ pad->flags |= FSPDRV_FLAG_EN_OPC;
+ break;
+ case 'c':
+ pad->flags &= ~FSPDRV_FLAG_EN_OPC;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ return count;
+}
+
+PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
+ fsp_attr_show_flags, fsp_attr_set_flags);
+
+static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
+ void *data, char *buf)
+{
+ return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
+}
+
+PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
+
+static struct attribute *fsp_attributes[] = {
+ &psmouse_attr_setreg.dattr.attr,
+ &psmouse_attr_getreg.dattr.attr,
+ &psmouse_attr_page.dattr.attr,
+ &psmouse_attr_vscroll.dattr.attr,
+ &psmouse_attr_hscroll.dattr.attr,
+ &psmouse_attr_flags.dattr.attr,
+ &psmouse_attr_ver.dattr.attr,
+ NULL
+};
+
+static struct attribute_group fsp_attribute_group = {
+ .attrs = fsp_attributes,
+};
+
+#ifdef FSP_DEBUG
+static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
+{
+ static unsigned int ps2_packet_cnt;
+ static unsigned int ps2_last_second;
+ unsigned int jiffies_msec;
+ const char *packet_type = "UNKNOWN";
+ unsigned short abs_x = 0, abs_y = 0;
+
+ /* Interpret & dump the packet data. */
+ switch (packet[0] >> FSP_PKT_TYPE_SHIFT) {
+ case FSP_PKT_TYPE_ABS:
+ packet_type = "Absolute";
+ abs_x = GET_ABS_X(packet);
+ abs_y = GET_ABS_Y(packet);
+ break;
+ case FSP_PKT_TYPE_NORMAL:
+ packet_type = "Normal";
+ break;
+ case FSP_PKT_TYPE_NOTIFY:
+ packet_type = "Notify";
+ break;
+ case FSP_PKT_TYPE_NORMAL_OPC:
+ packet_type = "Normal-OPC";
+ break;
+ }
+
+ ps2_packet_cnt++;
+ jiffies_msec = jiffies_to_msecs(jiffies);
+ psmouse_dbg(psmouse,
+ "%08dms %s packets: %02x, %02x, %02x, %02x; "
+ "abs_x: %d, abs_y: %d\n",
+ jiffies_msec, packet_type,
+ packet[0], packet[1], packet[2], packet[3], abs_x, abs_y);
+
+ if (jiffies_msec - ps2_last_second > 1000) {
+ psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
+ ps2_packet_cnt = 0;
+ ps2_last_second = jiffies_msec;
+ }
+}
+#else
+static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
+{
+}
+#endif
+
+static void fsp_set_slot(struct input_dev *dev, int slot, bool active,
+ unsigned int x, unsigned int y)
+{
+ input_mt_slot(dev, slot);
+ input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
+ if (active) {
+ input_report_abs(dev, ABS_MT_POSITION_X, x);
+ input_report_abs(dev, ABS_MT_POSITION_Y, y);
+ }
+}
+
+static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
+{
+ struct input_dev *dev = psmouse->dev;
+ struct fsp_data *ad = psmouse->private;
+ unsigned char *packet = psmouse->packet;
+ unsigned char button_status = 0, lscroll = 0, rscroll = 0;
+ unsigned short abs_x, abs_y, fgrs = 0;
+ int rel_x, rel_y;
+
+ if (psmouse->pktcnt < 4)
+ return PSMOUSE_GOOD_DATA;
+
+ /*
+ * Full packet accumulated, process it
+ */
+
+ fsp_packet_debug(psmouse, packet);
+
+ switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
+ case FSP_PKT_TYPE_ABS:
+
+ if ((packet[0] == 0x48 || packet[0] == 0x49) &&
+ packet[1] == 0 && packet[2] == 0) {
+ /*
+ * Ignore coordinate noise when finger leaving the
+ * surface, otherwise cursor may jump to upper-left
+ * corner.
+ */
+ packet[3] &= 0xf0;
+ }
+
+ abs_x = GET_ABS_X(packet);
+ abs_y = GET_ABS_Y(packet);
+
+ if (packet[0] & FSP_PB0_MFMC) {
+ /*
+ * MFMC packet: assume that there are two fingers on
+ * pad
+ */
+ fgrs = 2;
+
+ /* MFMC packet */
+ if (packet[0] & FSP_PB0_MFMC_FGR2) {
+ /* 2nd finger */
+ if (ad->last_mt_fgr == 2) {
+ /*
+ * workaround for buggy firmware
+ * which doesn't clear MFMC bit if
+ * the 1st finger is up
+ */
+ fgrs = 1;
+ fsp_set_slot(dev, 0, false, 0, 0);
+ }
+ ad->last_mt_fgr = 2;
+
+ fsp_set_slot(dev, 1, fgrs == 2, abs_x, abs_y);
+ } else {
+ /* 1st finger */
+ if (ad->last_mt_fgr == 1) {
+ /*
+ * workaround for buggy firmware
+ * which doesn't clear MFMC bit if
+ * the 2nd finger is up
+ */
+ fgrs = 1;
+ fsp_set_slot(dev, 1, false, 0, 0);
+ }
+ ad->last_mt_fgr = 1;
+ fsp_set_slot(dev, 0, fgrs != 0, abs_x, abs_y);
+ }
+ } else {
+ /* SFAC packet */
+ if ((packet[0] & (FSP_PB0_LBTN|FSP_PB0_PHY_BTN)) ==
+ FSP_PB0_LBTN) {
+ /* On-pad click in SFAC mode should be handled
+ * by userspace. On-pad clicks in MFMC mode
+ * are real clickpad clicks, and not ignored.
+ */
+ packet[0] &= ~FSP_PB0_LBTN;
+ }
+
+ /* no multi-finger information */
+ ad->last_mt_fgr = 0;
+
+ if (abs_x != 0 && abs_y != 0)
+ fgrs = 1;
+
+ fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
+ fsp_set_slot(dev, 1, false, 0, 0);
+ }
+ if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
+ input_report_abs(dev, ABS_X, abs_x);
+ input_report_abs(dev, ABS_Y, abs_y);
+ }
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
+ input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+ input_report_key(dev, BTN_TOUCH, fgrs);
+ input_report_key(dev, BTN_TOOL_FINGER, fgrs == 1);
+ input_report_key(dev, BTN_TOOL_DOUBLETAP, fgrs == 2);
+ break;
+
+ case FSP_PKT_TYPE_NORMAL_OPC:
+ /* on-pad click, filter it if necessary */
+ if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
+ packet[0] &= ~FSP_PB0_LBTN;
+ /* fall through */
+
+ case FSP_PKT_TYPE_NORMAL:
+ /* normal packet */
+ /* special packet data translation from on-pad packets */
+ if (packet[3] != 0) {
+ if (packet[3] & BIT(0))
+ button_status |= 0x01; /* wheel down */
+ if (packet[3] & BIT(1))
+ button_status |= 0x0f; /* wheel up */
+ if (packet[3] & BIT(2))
+ button_status |= BIT(4);/* horizontal left */
+ if (packet[3] & BIT(3))
+ button_status |= BIT(5);/* horizontal right */
+ /* push back to packet queue */
+ if (button_status != 0)
+ packet[3] = button_status;
+ rscroll = (packet[3] >> 4) & 1;
+ lscroll = (packet[3] >> 5) & 1;
+ }
+ /*
+ * Processing wheel up/down and extra button events
+ */
+ input_report_rel(dev, REL_WHEEL,
+ (int)(packet[3] & 8) - (int)(packet[3] & 7));
+ input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
+ input_report_key(dev, BTN_BACK, lscroll);
+ input_report_key(dev, BTN_FORWARD, rscroll);
+
+ /*
+ * Standard PS/2 Mouse
+ */
+ input_report_key(dev, BTN_LEFT, packet[0] & 1);
+ input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
+ input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
+
+ rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
+ rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
+
+ input_report_rel(dev, REL_X, rel_x);
+ input_report_rel(dev, REL_Y, rel_y);
+ break;
+ }
+
+ input_sync(dev);
+
+ return PSMOUSE_FULL_PACKET;
+}
+
+static int fsp_activate_protocol(struct psmouse *psmouse)
+{
+ struct fsp_data *pad = psmouse->private;
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[2];
+ int val;
+
+ /*
+ * Standard procedure to enter FSP Intellimouse mode
+ * (scrolling wheel, 4th and 5th buttons)
+ */
+ param[0] = 200;
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
+ param[0] = 200;
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
+ param[0] = 80;
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
+
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
+ if (param[0] != 0x04) {
+ psmouse_err(psmouse,
+ "Unable to enable 4 bytes packet format.\n");
+ return -EIO;
+ }
+
+ if (pad->ver < FSP_VER_STL3888_C0) {
+ /* Preparing relative coordinates output for older hardware */
+ if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
+ psmouse_err(psmouse,
+ "Unable to read SYSCTL5 register.\n");
+ return -EIO;
+ }
+
+ if (fsp_get_buttons(psmouse, &pad->buttons)) {
+ psmouse_err(psmouse,
+ "Unable to retrieve number of buttons.\n");
+ return -EIO;
+ }
+
+ val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
+ /* Ensure we are not in absolute mode */
+ val &= ~FSP_BIT_EN_PKT_G0;
+ if (pad->buttons == 0x06) {
+ /* Left/Middle/Right & Scroll Up/Down/Right/Left */
+ val |= FSP_BIT_EN_MSID6;
+ }
+
+ if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
+ psmouse_err(psmouse,
+ "Unable to set up required mode bits.\n");
+ return -EIO;
+ }
+
+ /*
+ * Enable OPC tags such that driver can tell the difference
+ * between on-pad and real button click
+ */
+ if (fsp_opc_tag_enable(psmouse, true))
+ psmouse_warn(psmouse,
+ "Failed to enable OPC tag mode.\n");
+ /* enable on-pad click by default */
+ pad->flags |= FSPDRV_FLAG_EN_OPC;
+
+ /* Enable on-pad vertical and horizontal scrolling */
+ fsp_onpad_vscr(psmouse, true);
+ fsp_onpad_hscr(psmouse, true);
+ } else {
+ /* Enable absolute coordinates output for Cx/Dx hardware */
+ if (fsp_reg_write(psmouse, FSP_REG_SWC1,
+ FSP_BIT_SWC1_EN_ABS_1F |
+ FSP_BIT_SWC1_EN_ABS_2F |
+ FSP_BIT_SWC1_EN_FUP_OUT |
+ FSP_BIT_SWC1_EN_ABS_CON)) {
+ psmouse_err(psmouse,
+ "Unable to enable absolute coordinates output.\n");
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int fsp_set_input_params(struct psmouse *psmouse)
+{
+ struct input_dev *dev = psmouse->dev;
+ struct fsp_data *pad = psmouse->private;
+
+ if (pad->ver < FSP_VER_STL3888_C0) {
+ __set_bit(BTN_MIDDLE, dev->keybit);
+ __set_bit(BTN_BACK, dev->keybit);
+ __set_bit(BTN_FORWARD, dev->keybit);
+ __set_bit(REL_WHEEL, dev->relbit);
+ __set_bit(REL_HWHEEL, dev->relbit);
+ } else {
+ /*
+ * Hardware prior to Cx performs much better in relative mode;
+ * hence, only enable absolute coordinates output as well as
+ * multi-touch output for the newer hardware.
+ *
+ * Maximum coordinates can be computed as:
+ *
+ * number of scanlines * 64 - 57
+ *
+ * where number of X/Y scanline lines are 16/12.
+ */
+ int abs_x = 967, abs_y = 711;
+
+ __set_bit(EV_ABS, dev->evbit);
+ __clear_bit(EV_REL, dev->evbit);
+ __set_bit(BTN_TOUCH, dev->keybit);
+ __set_bit(BTN_TOOL_FINGER, dev->keybit);
+ __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
+ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
+
+ input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0);
+ input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0);
+ input_mt_init_slots(dev, 2, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0);
+ }
+
+ return 0;
+}
+
+int fsp_detect(struct psmouse *psmouse, bool set_properties)
+{
+ int id;
+
+ if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
+ return -EIO;
+
+ if (id != 0x01)
+ return -ENODEV;
+
+ if (set_properties) {
+ psmouse->vendor = "Sentelic";
+ psmouse->name = "FingerSensingPad";
+ }
+
+ return 0;
+}
+
+static void fsp_reset(struct psmouse *psmouse)
+{
+ fsp_opc_tag_enable(psmouse, false);
+ fsp_onpad_vscr(psmouse, false);
+ fsp_onpad_hscr(psmouse, false);
+}
+
+static void fsp_disconnect(struct psmouse *psmouse)
+{
+ sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
+ &fsp_attribute_group);
+
+ fsp_reset(psmouse);
+ kfree(psmouse->private);
+}
+
+static int fsp_reconnect(struct psmouse *psmouse)
+{
+ int version;
+
+ if (fsp_detect(psmouse, 0))
+ return -ENODEV;
+
+ if (fsp_get_version(psmouse, &version))
+ return -ENODEV;
+
+ if (fsp_activate_protocol(psmouse))
+ return -EIO;
+
+ return 0;
+}
+
+int fsp_init(struct psmouse *psmouse)
+{
+ struct fsp_data *priv;
+ int ver, rev, sn = 0;
+ int error;
+
+ if (fsp_get_version(psmouse, &ver) ||
+ fsp_get_revision(psmouse, &rev)) {
+ return -ENODEV;
+ }
+ if (ver >= FSP_VER_STL3888_C0) {
+ /* firmware information is only available since C0 */
+ fsp_get_sn(psmouse, &sn);
+ }
+
+ psmouse_info(psmouse,
+ "Finger Sensing Pad, hw: %d.%d.%d, sn: %x, sw: %s\n",
+ ver >> 4, ver & 0x0F, rev, sn, fsp_drv_ver);
+
+ psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->ver = ver;
+ priv->rev = rev;
+
+ psmouse->protocol_handler = fsp_process_byte;
+ psmouse->disconnect = fsp_disconnect;
+ psmouse->reconnect = fsp_reconnect;
+ psmouse->cleanup = fsp_reset;
+ psmouse->pktsize = 4;
+
+ error = fsp_activate_protocol(psmouse);
+ if (error)
+ goto err_out;
+
+ /* Set up various supported input event bits */
+ error = fsp_set_input_params(psmouse);
+ if (error)
+ goto err_out;
+
+ error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
+ &fsp_attribute_group);
+ if (error) {
+ psmouse_err(psmouse,
+ "Failed to create sysfs attributes (%d)", error);
+ goto err_out;
+ }
+
+ return 0;
+
+ err_out:
+ kfree(psmouse->private);
+ psmouse->private = NULL;
+ return error;
+}