MODULE_PARM_DESC(post_interrupt_delay,
"delay (ms) before recal after recal interrupt detected");
+static char hgpk_mode_name[16];
+module_param_string(hgpk_mode, hgpk_mode_name, sizeof(hgpk_mode_name), 0644);
+MODULE_PARM_DESC(hgpk_mode,
+ "default hgpk mode: mouse, glidesensor or pentablet");
+
+static int hgpk_default_mode = HGPK_MODE_MOUSE;
+
+static const char * const hgpk_mode_names[] = {
+ [HGPK_MODE_MOUSE] = "Mouse",
+ [HGPK_MODE_GLIDESENSOR] = "GlideSensor",
+ [HGPK_MODE_PENTABLET] = "PenTablet",
+};
+
+static int hgpk_mode_from_name(const char *buf, int len)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hgpk_mode_names); i++) {
+ const char *name = hgpk_mode_names[i];
+ if (strlen(name) == len && !strncasecmp(name, buf, len))
+ return i;
+ }
+
+ return HGPK_MODE_INVALID;
+}
+
/*
* When the touchpad gets ultra-sensitive, one can keep their finger 1/2"
* above the pad and still have it send packets. This causes a jump cursor
* swr/swl are the left/right buttons.
* x-neg/y-neg are the x and y delta negative bits
* x-over/y-over are the x and y overflow bits
+ *
+ * ---
+ *
+ * HGPK Advanced Mode - single-mode format
+ *
+ * byte 0(PT): 1 1 0 0 1 1 1 1
+ * byte 0(GS): 1 1 1 1 1 1 1 1
+ * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
+ * byte 2(PT): 0 0 x9 x8 x7 ? pt-dsw 0
+ * byte 2(GS): 0 x10 x9 x8 x7 ? gs-dsw pt-dsw
+ * byte 3: 0 y9 y8 y7 1 0 swr swl
+ * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
+ * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
+ *
+ * ?'s are not defined in the protocol spec, may vary between models.
+ *
+ * swr/swl are the left/right buttons.
+ *
+ * pt-dsw/gs-dsw indicate that the pt/gs sensor is detecting a
+ * pen/finger
*/
-static int hgpk_validate_byte(unsigned char *packet)
+static bool hgpk_is_byte_valid(struct psmouse *psmouse, unsigned char *packet)
{
- return (packet[0] & 0x0C) != 0x08;
+ struct hgpk_data *priv = psmouse->private;
+ int pktcnt = psmouse->pktcnt;
+ bool valid;
+
+ switch (priv->mode) {
+ case HGPK_MODE_MOUSE:
+ valid = (packet[0] & 0x0C) == 0x08;
+ break;
+
+ case HGPK_MODE_GLIDESENSOR:
+ valid = pktcnt == 1 ?
+ packet[0] == HGPK_GS : !(packet[pktcnt - 1] & 0x80);
+ break;
+
+ case HGPK_MODE_PENTABLET:
+ valid = pktcnt == 1 ?
+ packet[0] == HGPK_PT : !(packet[pktcnt - 1] & 0x80);
+ break;
+
+ default:
+ valid = false;
+ break;
+ }
+
+ if (!valid)
+ hgpk_dbg(psmouse,
+ "bad data, mode %d (%d) %02x %02x %02x %02x %02x %02x\n",
+ priv->mode, pktcnt,
+ psmouse->packet[0], psmouse->packet[1],
+ psmouse->packet[2], psmouse->packet[3],
+ psmouse->packet[4], psmouse->packet[5]);
+
+ return valid;
}
-static void hgpk_process_packet(struct psmouse *psmouse)
+static void hgpk_process_advanced_packet(struct psmouse *psmouse)
{
- struct input_dev *dev = psmouse->dev;
+ struct hgpk_data *priv = psmouse->private;
+ struct input_dev *idev = psmouse->dev;
unsigned char *packet = psmouse->packet;
- int x, y, left, right;
+ int down = !!(packet[2] & 2);
+ int left = !!(packet[3] & 1);
+ int right = !!(packet[3] & 2);
+ int x = packet[1] | ((packet[2] & 0x78) << 4);
+ int y = packet[4] | ((packet[3] & 0x70) << 3);
+
+ if (priv->mode == HGPK_MODE_GLIDESENSOR) {
+ int pt_down = !!(packet[2] & 1);
+ int finger_down = !!(packet[2] & 2);
+ int z = packet[5];
+
+ input_report_abs(idev, ABS_PRESSURE, z);
+ if (tpdebug)
+ hgpk_dbg(psmouse, "pd=%d fd=%d z=%d",
+ pt_down, finger_down, z);
+ } else {
+ /*
+ * PenTablet mode does not report pressure, so we don't
+ * report it here
+ */
+ if (tpdebug)
+ hgpk_dbg(psmouse, "pd=%d ", down);
+ }
- left = packet[0] & 1;
- right = (packet[0] >> 1) & 1;
+ if (tpdebug)
+ hgpk_dbg(psmouse, "l=%d r=%d x=%d y=%d\n", left, right, x, y);
- x = packet[1] - ((packet[0] << 4) & 0x100);
- y = ((packet[0] << 3) & 0x100) - packet[2];
+ input_report_key(idev, BTN_TOUCH, down);
+ input_report_key(idev, BTN_LEFT, left);
+ input_report_key(idev, BTN_RIGHT, right);
+
+ /*
+ * If this packet says that the finger was removed, reset our position
+ * tracking so that we don't erroneously detect a jump on next press.
+ */
+ if (!down)
+ priv->abs_x = priv->abs_y = -1;
+
+ /*
+ * Report position if finger/pen is down, but weed out duplicate
+ * packets (we get quite a few in this mode, and they mess up our
+ * jump detection.
+ */
+ if (down && (x != priv->abs_x || y != priv->abs_y)) {
+
+ /* Don't apply hacks in PT mode, it seems reliable */
+ if (priv->mode != HGPK_MODE_PENTABLET && priv->abs_x != -1) {
+ hgpk_jumpy_hack(psmouse,
+ priv->abs_x - x, priv->abs_y - y);
+ hgpk_spewing_hack(psmouse, left, right,
+ priv->abs_x - x, priv->abs_y - y);
+ }
+
+ input_report_abs(idev, ABS_X, x);
+ input_report_abs(idev, ABS_Y, y);
+ priv->abs_x = x;
+ priv->abs_y = y;
+ }
+
+ input_sync(idev);
+}
+
+static void hgpk_process_simple_packet(struct psmouse *psmouse)
+{
+ struct input_dev *dev = psmouse->dev;
+ unsigned char *packet = psmouse->packet;
+ int left = packet[0] & 1;
+ int right = (packet[0] >> 1) & 1;
+ int x = packet[1] - ((packet[0] << 4) & 0x100);
+ int y = ((packet[0] << 3) & 0x100) - packet[2];
hgpk_jumpy_hack(psmouse, x, y);
hgpk_spewing_hack(psmouse, left, right, x, y);
{
struct hgpk_data *priv = psmouse->private;
- if (hgpk_validate_byte(psmouse->packet)) {
- hgpk_dbg(psmouse, "%s: (%d) %02x %02x %02x\n",
- __func__, psmouse->pktcnt, psmouse->packet[0],
- psmouse->packet[1], psmouse->packet[2]);
+ if (!hgpk_is_byte_valid(psmouse, psmouse->packet))
return PSMOUSE_BAD_DATA;
- }
if (psmouse->pktcnt >= psmouse->pktsize) {
- hgpk_process_packet(psmouse);
+ if (priv->mode == HGPK_MODE_MOUSE)
+ hgpk_process_simple_packet(psmouse);
+ else
+ hgpk_process_advanced_packet(psmouse);
return PSMOUSE_FULL_PACKET;
}
return PSMOUSE_GOOD_DATA;
}
+static int hgpk_select_mode(struct psmouse *psmouse)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ struct hgpk_data *priv = psmouse->private;
+ int i;
+ int cmd;
+
+ /*
+ * 4 disables to enable advanced mode
+ * then 3 0xf2 bytes as the preamble for GS/PT selection
+ */
+ const int advanced_init[] = {
+ PSMOUSE_CMD_DISABLE, PSMOUSE_CMD_DISABLE,
+ PSMOUSE_CMD_DISABLE, PSMOUSE_CMD_DISABLE,
+ 0xf2, 0xf2, 0xf2,
+ };
+
+ switch (priv->mode) {
+ case HGPK_MODE_MOUSE:
+ psmouse->pktsize = 3;
+ break;
+
+ case HGPK_MODE_GLIDESENSOR:
+ case HGPK_MODE_PENTABLET:
+ psmouse->pktsize = 6;
+
+ /* Switch to 'Advanced mode.', four disables in a row. */
+ for (i = 0; i < ARRAY_SIZE(advanced_init); i++)
+ if (ps2_command(ps2dev, NULL, advanced_init[i]))
+ return -EIO;
+
+ /* select between GlideSensor (mouse) or PenTablet */
+ cmd = priv->mode == HGPK_MODE_GLIDESENSOR ?
+ PSMOUSE_CMD_SETSCALE11 : PSMOUSE_CMD_SETSCALE21;
+
+ if (ps2_command(ps2dev, NULL, cmd))
+ return -EIO;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void hgpk_setup_input_device(struct input_dev *input,
+ struct input_dev *old_input,
+ enum hgpk_mode mode)
+{
+ if (old_input) {
+ input->name = old_input->name;
+ input->phys = old_input->phys;
+ input->id = old_input->id;
+ input->dev.parent = old_input->dev.parent;
+ }
+
+ memset(input->evbit, 0, sizeof(input->evbit));
+ memset(input->relbit, 0, sizeof(input->relbit));
+ memset(input->keybit, 0, sizeof(input->keybit));
+
+ /* All modes report left and right buttons */
+ __set_bit(EV_KEY, input->evbit);
+ __set_bit(BTN_LEFT, input->keybit);
+ __set_bit(BTN_RIGHT, input->keybit);
+
+ switch (mode) {
+ case HGPK_MODE_MOUSE:
+ __set_bit(EV_REL, input->evbit);
+ __set_bit(REL_X, input->relbit);
+ __set_bit(REL_Y, input->relbit);
+ break;
+
+ case HGPK_MODE_GLIDESENSOR:
+ __set_bit(BTN_TOUCH, input->keybit);
+ __set_bit(BTN_TOOL_FINGER, input->keybit);
+
+ __set_bit(EV_ABS, input->evbit);
+
+ /* GlideSensor has pressure sensor, PenTablet does not */
+ input_set_abs_params(input, ABS_PRESSURE, 0, 15, 0, 0);
+
+ /* From device specs */
+ input_set_abs_params(input, ABS_X, 0, 399, 0, 0);
+ input_set_abs_params(input, ABS_Y, 0, 290, 0, 0);
+
+ /* Calculated by hand based on usable size (52mm x 38mm) */
+ input_abs_set_res(input, ABS_X, 8);
+ input_abs_set_res(input, ABS_Y, 8);
+ break;
+
+ case HGPK_MODE_PENTABLET:
+ __set_bit(BTN_TOUCH, input->keybit);
+ __set_bit(BTN_TOOL_FINGER, input->keybit);
+
+ __set_bit(EV_ABS, input->evbit);
+
+ /* From device specs */
+ input_set_abs_params(input, ABS_X, 0, 999, 0, 0);
+ input_set_abs_params(input, ABS_Y, 5, 239, 0, 0);
+
+ /* Calculated by hand based on usable size (156mm x 38mm) */
+ input_abs_set_res(input, ABS_X, 6);
+ input_abs_set_res(input, ABS_Y, 8);
+ break;
+
+ default:
+ BUG();
+ }
+}
+
+static void hgpk_reset_hack_state(struct psmouse *psmouse)
+{
+ struct hgpk_data *priv = psmouse->private;
+
+ priv->abs_x = priv->abs_y = -1;
+}
+
+static int hgpk_reset_device(struct psmouse *psmouse, bool recalibrate)
+{
+ int err;
+
+ psmouse_reset(psmouse);
+
+ if (recalibrate) {
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+
+ /* send the recalibrate request */
+ if (ps2_command(ps2dev, NULL, 0xf5) ||
+ ps2_command(ps2dev, NULL, 0xf5) ||
+ ps2_command(ps2dev, NULL, 0xe6) ||
+ ps2_command(ps2dev, NULL, 0xf5)) {
+ return -1;
+ }
+
+ /* according to ALPS, 150mS is required for recalibration */
+ msleep(150);
+ }
+
+ err = hgpk_select_mode(psmouse);
+ if (err) {
+ hgpk_err(psmouse, "failed to select mode\n");
+ return err;
+ }
+
+ hgpk_reset_hack_state(psmouse);
+
+ return 0;
+}
+
static int hgpk_force_recalibrate(struct psmouse *psmouse)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
struct hgpk_data *priv = psmouse->private;
+ int err;
/* C-series touchpads added the recalibrate command */
if (psmouse->model < HGPK_MODEL_C)
psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
/* start by resetting the device */
- psmouse_reset(psmouse);
-
- /* send the recalibrate request */
- if (ps2_command(ps2dev, NULL, 0xf5) ||
- ps2_command(ps2dev, NULL, 0xf5) ||
- ps2_command(ps2dev, NULL, 0xe6) ||
- ps2_command(ps2dev, NULL, 0xf5)) {
- return -1;
- }
-
- /* according to ALPS, 150mS is required for recalibration */
- msleep(150);
+ err = hgpk_reset_device(psmouse, true);
+ if (err)
+ return err;
- /* XXX: If a finger is down during this delay, recalibration will
+ /*
+ * XXX: If a finger is down during this delay, recalibration will
* detect capacitance incorrectly. This is a hardware bug, and
* we don't have a good way to deal with it. The 2s window stuff
* (below) is our best option for now.
psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
- /* After we recalibrate, we shouldn't get any packets for 2s. If
+ /*
+ * After we recalibrate, we shouldn't get any packets for 2s. If
* we do, it's likely that someone's finger was on the touchpad.
* If someone's finger *was* on the touchpad, it's probably
* miscalibrated. So, we should schedule another recalibration
*/
- priv->recalib_window = jiffies + msecs_to_jiffies(recal_guard_time);
+ priv->recalib_window = jiffies + msecs_to_jiffies(recal_guard_time);
return 0;
}
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
int timeo;
+ int err;
/* Added on D-series touchpads */
if (psmouse->model < HGPK_MODEL_D)
msleep(50);
}
- psmouse_reset(psmouse);
+ err = hgpk_reset_device(psmouse, false);
+ if (err) {
+ hgpk_err(psmouse, "Failed to reset device!\n");
+ return err;
+ }
/* should be all set, enable the touchpad */
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
static int hgpk_reconnect(struct psmouse *psmouse)
{
- /* During suspend/resume the ps2 rails remain powered. We don't want
+ /*
+ * During suspend/resume the ps2 rails remain powered. We don't want
* to do a reset because it's flush data out of buffers; however,
- * earlier prototypes (B1) had some brokenness that required a reset. */
+ * earlier prototypes (B1) had some brokenness that required a reset.
+ */
if (olpc_board_at_least(olpc_board(0xb2)))
if (psmouse->ps2dev.serio->dev.power.power_state.event !=
PM_EVENT_ON)
return 0;
- psmouse_reset(psmouse);
-
- return 0;
+ return hgpk_reset_device(psmouse, false);
}
static ssize_t hgpk_show_powered(struct psmouse *psmouse, void *data, char *buf)
__PSMOUSE_DEFINE_ATTR(powered, S_IWUSR | S_IRUGO, NULL,
hgpk_show_powered, hgpk_set_powered, false);
+static ssize_t attr_show_mode(struct psmouse *psmouse, void *data, char *buf)
+{
+ struct hgpk_data *priv = psmouse->private;
+
+ return sprintf(buf, "%s\n", hgpk_mode_names[priv->mode]);
+}
+
+static ssize_t attr_set_mode(struct psmouse *psmouse, void *data,
+ const char *buf, size_t len)
+{
+ struct hgpk_data *priv = psmouse->private;
+ enum hgpk_mode old_mode = priv->mode;
+ enum hgpk_mode new_mode = hgpk_mode_from_name(buf, len);
+ struct input_dev *old_dev = psmouse->dev;
+ struct input_dev *new_dev;
+ int err;
+
+ if (new_mode == HGPK_MODE_INVALID)
+ return -EINVAL;
+
+ if (old_mode == new_mode)
+ return len;
+
+ new_dev = input_allocate_device();
+ if (!new_dev)
+ return -ENOMEM;
+
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
+
+ /* Switch device into the new mode */
+ priv->mode = new_mode;
+ err = hgpk_reset_device(psmouse, false);
+ if (err)
+ goto err_try_restore;
+
+ hgpk_setup_input_device(new_dev, old_dev, new_mode);
+
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+
+ err = input_register_device(new_dev);
+ if (err)
+ goto err_try_restore;
+
+ psmouse->dev = new_dev;
+ input_unregister_device(old_dev);
+
+ return len;
+
+err_try_restore:
+ input_free_device(new_dev);
+ priv->mode = old_mode;
+ hgpk_reset_device(psmouse, false);
+
+ return err;
+}
+
+PSMOUSE_DEFINE_ATTR(hgpk_mode, S_IWUSR | S_IRUGO, NULL,
+ attr_show_mode, attr_set_mode);
+
static ssize_t hgpk_trigger_recal_show(struct psmouse *psmouse,
void *data, char *buf)
{
device_remove_file(&psmouse->ps2dev.serio->dev,
&psmouse_attr_powered.dattr);
+ device_remove_file(&psmouse->ps2dev.serio->dev,
+ &psmouse_attr_hgpk_mode.dattr);
if (psmouse->model >= HGPK_MODEL_C)
device_remove_file(&psmouse->ps2dev.serio->dev,
static int hgpk_register(struct psmouse *psmouse)
{
+ struct hgpk_data *priv = psmouse->private;
int err;
/* register handlers */
psmouse->poll = hgpk_poll;
psmouse->disconnect = hgpk_disconnect;
psmouse->reconnect = hgpk_reconnect;
- psmouse->pktsize = 3;
/* Disable the idle resync. */
psmouse->resync_time = 0;
/* Reset after a lot of bad bytes. */
psmouse->resetafter = 1024;
+ hgpk_setup_input_device(psmouse->dev, NULL, priv->mode);
+
err = device_create_file(&psmouse->ps2dev.serio->dev,
&psmouse_attr_powered.dattr);
if (err) {
return err;
}
+ err = device_create_file(&psmouse->ps2dev.serio->dev,
+ &psmouse_attr_hgpk_mode.dattr);
+ if (err) {
+ hgpk_err(psmouse, "Failed creating 'hgpk_mode' sysfs node\n");
+ goto err_remove_powered;
+ }
+
/* C-series touchpads added the recalibrate command */
if (psmouse->model >= HGPK_MODEL_C) {
err = device_create_file(&psmouse->ps2dev.serio->dev,
if (err) {
hgpk_err(psmouse,
"Failed creating 'recalibrate' sysfs node\n");
- device_remove_file(&psmouse->ps2dev.serio->dev,
- &psmouse_attr_powered.dattr);
- return err;
+ goto err_remove_mode;
}
}
return 0;
+
+err_remove_mode:
+ device_remove_file(&psmouse->ps2dev.serio->dev,
+ &psmouse_attr_hgpk_mode.dattr);
+err_remove_powered:
+ device_remove_file(&psmouse->ps2dev.serio->dev,
+ &psmouse_attr_powered.dattr);
+ return err;
}
int hgpk_init(struct psmouse *psmouse)
{
struct hgpk_data *priv;
- int err = -ENOMEM;
+ int err;
priv = kzalloc(sizeof(struct hgpk_data), GFP_KERNEL);
- if (!priv)
+ if (!priv) {
+ err = -ENOMEM;
goto alloc_fail;
+ }
psmouse->private = priv;
+
priv->psmouse = psmouse;
priv->powered = true;
+ priv->mode = hgpk_default_mode;
INIT_DELAYED_WORK(&priv->recalib_wq, hgpk_recalib_work);
- err = psmouse_reset(psmouse);
+ err = hgpk_reset_device(psmouse, false);
if (err)
goto init_fail;
return 0;
}
+
+void hgpk_module_init(void)
+{
+ hgpk_default_mode = hgpk_mode_from_name(hgpk_mode_name,
+ strlen(hgpk_mode_name));
+ if (hgpk_default_mode == HGPK_MODE_INVALID) {
+ hgpk_default_mode = HGPK_MODE_MOUSE;
+ strlcpy(hgpk_mode_name, hgpk_mode_names[HGPK_MODE_MOUSE],
+ sizeof(hgpk_mode_name));
+ }
+}
projects / platform / kernel / linux-rpi.git / commitdiff