Merge tag 'v4.0-rc5' into next

Merge with the latest upstream to synchronize Synaptics changes
and bring in new infrastructure pieces.

Conflicts:
	drivers/input/mouse/synaptics.c

13 files changed, 253 insertions, 81 deletions

diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index e27a25892db4..387c51f4b4e4 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -1399,8 +1399,8 @@ static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t coun
 
 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
 {
-	size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
-			atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
+	size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
+			       ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
 
 	buf[len++] = '\n';
 	buf[len] = '\0';
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 883d6aed5b9a..ddf4045de084 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -190,7 +190,7 @@ static ssize_t gpio_keys_attr_show_helper(struct gpio_keys_drvdata *ddata,
 		__set_bit(bdata->button->code, bits);
 	}
 
-	ret = bitmap_scnlistprintf(buf, PAGE_SIZE - 2, bits, n_events);
+	ret = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", n_events, bits);
 	buf[ret++] = '\n';
 	buf[ret] = '\0';
 
diff --git a/drivers/input/keyboard/tc3589x-keypad.c b/drivers/input/keyboard/tc3589x-keypad.c
index 8ff612d160b0..563932500ff1 100644
--- a/drivers/input/keyboard/tc3589x-keypad.c
+++ b/drivers/input/keyboard/tc3589x-keypad.c
@@ -411,9 +411,9 @@ static int tc3589x_keypad_probe(struct platform_device *pdev)
 
 	input_set_drvdata(input, keypad);
 
-	error = request_threaded_irq(irq, NULL,
-			tc3589x_keypad_irq, plat->irqtype,
-			"tc3589x-keypad", keypad);
+	error = request_threaded_irq(irq, NULL, tc3589x_keypad_irq,
+				     plat->irqtype | IRQF_ONESHOT,
+				     "tc3589x-keypad", keypad);
 	if (error < 0) {
 		dev_err(&pdev->dev,
 				"Could not allocate irq %d,error %d\n",
diff --git a/drivers/input/misc/mma8450.c b/drivers/input/misc/mma8450.c
index 59d4dcddf6de..98228773a111 100644
--- a/drivers/input/misc/mma8450.c
+++ b/drivers/input/misc/mma8450.c
@@ -187,6 +187,7 @@ static int mma8450_probe(struct i2c_client *c,
 	idev->private		= m;
 	idev->input->name	= MMA8450_DRV_NAME;
 	idev->input->id.bustype	= BUS_I2C;
+	idev->input->dev.parent = &c->dev;
 	idev->poll		= mma8450_poll;
 	idev->poll_interval	= POLL_INTERVAL;
 	idev->poll_interval_max	= POLL_INTERVAL_MAX;
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index d28726a0ef85..1bd15ebc01f2 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2605,8 +2605,10 @@ int alps_detect(struct psmouse *psmouse, bool set_properties)
 		return -ENOMEM;
 
 	error = alps_identify(psmouse, priv);
-	if (error)
+	if (error) {
+		kfree(priv);
 		return error;
+	}
 
 	if (set_properties) {
 		psmouse->vendor = "ALPS";
diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c
index 77e9d70a986b..1e2291c378fe 100644
--- a/drivers/input/mouse/cyapa_gen3.c
+++ b/drivers/input/mouse/cyapa_gen3.c
@@ -20,7 +20,7 @@
 #include <linux/input/mt.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <linux/unaligned/access_ok.h>
+#include <asm/unaligned.h>
 #include "cyapa.h"
 
 
diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c
index ddf5393a1180..5b611dd71e79 100644
--- a/drivers/input/mouse/cyapa_gen5.c
+++ b/drivers/input/mouse/cyapa_gen5.c
@@ -17,7 +17,7 @@
 #include <linux/mutex.h>
 #include <linux/completion.h>
 #include <linux/slab.h>
-#include <linux/unaligned/access_ok.h>
+#include <asm/unaligned.h>
 #include <linux/crc-itu-t.h>
 #include "cyapa.h"
 
@@ -1926,7 +1926,7 @@ static int cyapa_gen5_read_idac_data(struct cyapa *cyapa,
 				electrodes_tx = cyapa->electrodes_x;
 			max_element_cnt = ((cyapa->aligned_electrodes_rx + 7) &
 						~7u) * electrodes_tx;
-		} else if (idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
+		} else {
 			offset = 2;
 			max_element_cnt = cyapa->electrodes_x +
 						cyapa->electrodes_y;
diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index 757f78a94aec..23d259416f2f 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -67,9 +67,6 @@ static void focaltech_reset(struct psmouse *psmouse)
 
 #define FOC_MAX_FINGERS 5
 
-#define FOC_MAX_X 2431
-#define FOC_MAX_Y 1663
-
 /*
  * Current state of a single finger on the touchpad.
  */
@@ -129,9 +126,17 @@ static void focaltech_report_state(struct psmouse *psmouse)
 		input_mt_slot(dev, i);
 		input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
 		if (active) {
-			input_report_abs(dev, ABS_MT_POSITION_X, finger->x);
+			unsigned int clamped_x, clamped_y;
+			/*
+			 * The touchpad might report invalid data, so we clamp
+			 * the resulting values so that we do not confuse
+			 * userspace.
+			 */
+			clamped_x = clamp(finger->x, 0U, priv->x_max);
+			clamped_y = clamp(finger->y, 0U, priv->y_max);
+			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
 			input_report_abs(dev, ABS_MT_POSITION_Y,
-					 FOC_MAX_Y - finger->y);
+					 priv->y_max - clamped_y);
 		}
 	}
 	input_mt_report_pointer_emulation(dev, true);
@@ -180,16 +185,6 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
 
 	state->pressed = (packet[0] >> 4) & 1;
 
-	/*
-	 * packet[5] contains some kind of tool size in the most
-	 * significant nibble. 0xff is a special value (latching) that
-	 * signals a large contact area.
-	 */
-	if (packet[5] == 0xff) {
-		state->fingers[finger].valid = false;
-		return;
-	}
-
 	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
 	state->fingers[finger].y = (packet[3] << 8) | packet[4];
 	state->fingers[finger].valid = true;
@@ -381,6 +376,23 @@ static int focaltech_read_size(struct psmouse *psmouse)
 
 	return 0;
 }
+
+void focaltech_set_resolution(struct psmouse *psmouse, unsigned int resolution)
+{
+	/* not supported yet */
+}
+
+static void focaltech_set_rate(struct psmouse *psmouse, unsigned int rate)
+{
+	/* not supported yet */
+}
+
+static void focaltech_set_scale(struct psmouse *psmouse,
+				enum psmouse_scale scale)
+{
+	/* not supported yet */
+}
+
 int focaltech_init(struct psmouse *psmouse)
 {
 	struct focaltech_data *priv;
@@ -415,6 +427,14 @@ int focaltech_init(struct psmouse *psmouse)
 	psmouse->cleanup = focaltech_reset;
 	/* resync is not supported yet */
 	psmouse->resync_time = 0;
+	/*
+	 * rate/resolution/scale changes are not supported yet, and
+	 * the generic implementations of these functions seem to
+	 * confuse some touchpads
+	 */
+	psmouse->set_resolution = focaltech_set_resolution;
+	psmouse->set_rate = focaltech_set_rate;
+	psmouse->set_scale = focaltech_set_scale;
 
 	return 0;
 
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index bd91a8efa0f1..27057df7ba74 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -454,6 +454,17 @@ static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
 }
 
 /*
+ * Here we set the mouse scaling.
+ */
+
+static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale)
+{
+	ps2_command(&psmouse->ps2dev, NULL,
+		    scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 :
+					       PSMOUSE_CMD_SETSCALE11);
+}
+
+/*
  * psmouse_poll() - default poll handler. Everyone except for ALPS uses it.
  */
 
@@ -715,6 +726,7 @@ static void psmouse_apply_defaults(struct psmouse *psmouse)
 
 	psmouse->set_rate = psmouse_set_rate;
 	psmouse->set_resolution = psmouse_set_resolution;
+	psmouse->set_scale = psmouse_set_scale;
 	psmouse->poll = psmouse_poll;
 	psmouse->protocol_handler = psmouse_process_byte;
 	psmouse->pktsize = 3;
@@ -1186,7 +1198,7 @@ static void psmouse_initialize(struct psmouse *psmouse)
 	if (psmouse_max_proto != PSMOUSE_PS2) {
 		psmouse->set_rate(psmouse, psmouse->rate);
 		psmouse->set_resolution(psmouse, psmouse->resolution);
-		ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
+		psmouse->set_scale(psmouse, PSMOUSE_SCALE11);
 	}
 }
 
diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
index c2ff137ecbdb..d02e1bdc9ae4 100644
--- a/drivers/input/mouse/psmouse.h
+++ b/drivers/input/mouse/psmouse.h
@@ -36,6 +36,11 @@ typedef enum {
 	PSMOUSE_FULL_PACKET
 } psmouse_ret_t;
 
+enum psmouse_scale {
+	PSMOUSE_SCALE11,
+	PSMOUSE_SCALE21
+};
+
 struct psmouse {
 	void *private;
 	struct input_dev *dev;
@@ -67,6 +72,7 @@ struct psmouse {
 	psmouse_ret_t (*protocol_handler)(struct psmouse *psmouse);
 	void (*set_rate)(struct psmouse *psmouse, unsigned int rate);
 	void (*set_resolution)(struct psmouse *psmouse, unsigned int resolution);
+	void (*set_scale)(struct psmouse *psmouse, enum psmouse_scale scale);
 
 	int (*reconnect)(struct psmouse *psmouse);
 	void (*disconnect)(struct psmouse *psmouse);
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 4c69e3304011..d73a94270211 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -67,9 +67,6 @@
 #define X_MAX_POSITIVE 8176
 #define Y_MAX_POSITIVE 8176
 
-/* maximum ABS_MT_POSITION displacement (in mm) */
-#define DMAX 10
-
 /*****************************************************************************
  *	Stuff we need even when we do not want native Synaptics support
  ****************************************************************************/
@@ -123,32 +120,41 @@ void synaptics_reset(struct psmouse *psmouse)
 
 static bool cr48_profile_sensor;
 
+#define ANY_BOARD_ID 0
 struct min_max_quirk {
 	const char * const *pnp_ids;
+	struct {
+		unsigned long int min, max;
+	} board_id;
 	int x_min, x_max, y_min, y_max;
 };
 
 static const struct min_max_quirk min_max_pnpid_table[] = {
 	{
 		(const char * const []){"LEN0033", NULL},
+		{ANY_BOARD_ID, ANY_BOARD_ID},
 		1024, 5052, 2258, 4832
 	},
 	{
-		(const char * const []){"LEN0035", "LEN0042", NULL},
+		(const char * const []){"LEN0042", NULL},
+		{ANY_BOARD_ID, ANY_BOARD_ID},
 		1232, 5710, 1156, 4696
 	},
 	{
 		(const char * const []){"LEN0034", "LEN0036", "LEN0037",
 					"LEN0039", "LEN2002", "LEN2004",
 					NULL},
+		{ANY_BOARD_ID, 2961},
 		1024, 5112, 2024, 4832
 	},
 	{
 		(const char * const []){"LEN2001", NULL},
+		{ANY_BOARD_ID, ANY_BOARD_ID},
 		1024, 5022, 2508, 4832
 	},
 	{
 		(const char * const []){"LEN2006", NULL},
+		{ANY_BOARD_ID, ANY_BOARD_ID},
 		1264, 5675, 1171, 4688
 	},
 	{ }
@@ -175,9 +181,7 @@ static const char * const topbuttonpad_pnp_ids[] = {
 	"LEN0041",
 	"LEN0042", /* Yoga */
 	"LEN0045",
-	"LEN0046",
 	"LEN0047",
-	"LEN0048",
 	"LEN0049",
 	"LEN2000",
 	"LEN2001", /* Edge E431 */
@@ -242,18 +246,39 @@ static int synaptics_model_id(struct psmouse *psmouse)
 	return 0;
 }
 
+static int synaptics_more_extended_queries(struct psmouse *psmouse)
+{
+	struct synaptics_data *priv = psmouse->private;
+	unsigned char buf[3];
+
+	if (synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf))
+		return -1;
+
+	priv->ext_cap_10 = (buf[0]<<16) | (buf[1]<<8) | buf[2];
+
+	return 0;
+}
+
 /*
- * Read the board id from the touchpad
+ * Read the board id and the "More Extended Queries" from the touchpad
  * The board id is encoded in the "QUERY MODES" response
  */
-static int synaptics_board_id(struct psmouse *psmouse)
+static int synaptics_query_modes(struct psmouse *psmouse)
 {
 	struct synaptics_data *priv = psmouse->private;
 	unsigned char bid[3];
 
+	/* firmwares prior 7.5 have no board_id encoded */
+	if (SYN_ID_FULL(priv->identity) < 0x705)
+		return 0;
+
 	if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
 		return -1;
 	priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
+
+	if (SYN_MEXT_CAP_BIT(bid[0]))
+		return synaptics_more_extended_queries(psmouse);
+
 	return 0;
 }
 
@@ -353,7 +378,6 @@ static int synaptics_resolution(struct psmouse *psmouse)
 {
 	struct synaptics_data *priv = psmouse->private;
 	unsigned char resp[3];
-	int i;
 
 	if (SYN_ID_MAJOR(priv->identity) < 4)
 		return 0;
@@ -365,17 +389,6 @@ static int synaptics_resolution(struct psmouse *psmouse)
 		}
 	}
 
-	for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
-		if (psmouse_matches_pnp_id(psmouse,
-					   min_max_pnpid_table[i].pnp_ids)) {
-			priv->x_min = min_max_pnpid_table[i].x_min;
-			priv->x_max = min_max_pnpid_table[i].x_max;
-			priv->y_min = min_max_pnpid_table[i].y_min;
-			priv->y_max = min_max_pnpid_table[i].y_max;
-			return 0;
-		}
-	}
-
 	if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
 	    SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
 		if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
@@ -384,23 +397,69 @@ static int synaptics_resolution(struct psmouse *psmouse)
 		} else {
 			priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
 			priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
+			psmouse_info(psmouse,
+				     "queried max coordinates: x [..%d], y [..%d]\n",
+				     priv->x_max, priv->y_max);
 		}
 	}
 
-	if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
-	    SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
+	if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) &&
+	    (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 ||
+	     /*
+	      * Firmware v8.1 does not report proper number of extended
+	      * capabilities, but has been proven to report correct min
+	      * coordinates.
+	      */
+	     SYN_ID_FULL(priv->identity) == 0x801)) {
 		if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
 			psmouse_warn(psmouse,
 				     "device claims to have min coordinates query, but I'm not able to read it.\n");
 		} else {
 			priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
 			priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
+			psmouse_info(psmouse,
+				     "queried min coordinates: x [%d..], y [%d..]\n",
+				     priv->x_min, priv->y_min);
 		}
 	}
 
 	return 0;
 }
 
+/*
+ * Apply quirk(s) if the hardware matches
+ */
+
+static void synaptics_apply_quirks(struct psmouse *psmouse)
+{
+	struct synaptics_data *priv = psmouse->private;
+	int i;
+
+	for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
+		if (!psmouse_matches_pnp_id(psmouse,
+					    min_max_pnpid_table[i].pnp_ids))
+			continue;
+
+		if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
+		    priv->board_id < min_max_pnpid_table[i].board_id.min)
+			continue;
+
+		if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
+		    priv->board_id > min_max_pnpid_table[i].board_id.max)
+			continue;
+
+		priv->x_min = min_max_pnpid_table[i].x_min;
+		priv->x_max = min_max_pnpid_table[i].x_max;
+		priv->y_min = min_max_pnpid_table[i].y_min;
+		priv->y_max = min_max_pnpid_table[i].y_max;
+		psmouse_info(psmouse,
+			     "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
+			     priv->x_min, priv->x_max,
+			     priv->y_min, priv->y_max);
+		break;
+	}
+}
+
 static int synaptics_query_hardware(struct psmouse *psmouse)
 {
 	if (synaptics_identify(psmouse))
@@ -409,13 +468,15 @@ static int synaptics_query_hardware(struct psmouse *psmouse)
 		return -1;
 	if (synaptics_firmware_id(psmouse))
 		return -1;
-	if (synaptics_board_id(psmouse))
+	if (synaptics_query_modes(psmouse))
 		return -1;
 	if (synaptics_capability(psmouse))
 		return -1;
 	if (synaptics_resolution(psmouse))
 		return -1;
 
+	synaptics_apply_quirks(psmouse);
+
 	return 0;
 }
 
@@ -523,18 +584,22 @@ static int synaptics_is_pt_packet(unsigned char *buf)
 	return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 }
 
-static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
+static void synaptics_pass_pt_packet(struct psmouse *psmouse,
+				     struct serio *ptport,
+				     unsigned char *packet)
 {
+	struct synaptics_data *priv = psmouse->private;
 	struct psmouse *child = serio_get_drvdata(ptport);
 
 	if (child && child->state == PSMOUSE_ACTIVATED) {
-		serio_interrupt(ptport, packet[1], 0);
+		serio_interrupt(ptport, packet[1] | priv->pt_buttons, 0);
 		serio_interrupt(ptport, packet[4], 0);
 		serio_interrupt(ptport, packet[5], 0);
 		if (child->pktsize == 4)
 			serio_interrupt(ptport, packet[2], 0);
-	} else
+	} else {
 		serio_interrupt(ptport, packet[1], 0);
+	}
 }
 
 static void synaptics_pt_activate(struct psmouse *psmouse)
@@ -612,6 +677,18 @@ static void synaptics_parse_agm(const unsigned char buf[],
 	}
 }
 
+static void synaptics_parse_ext_buttons(const unsigned char buf[],
+					struct synaptics_data *priv,
+					struct synaptics_hw_state *hw)
+{
+	unsigned int ext_bits =
+		(SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
+	unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
+
+	hw->ext_buttons = buf[4] & ext_mask;
+	hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
+}
+
 static int synaptics_parse_hw_state(const unsigned char buf[],
 				    struct synaptics_data *priv,
 				    struct synaptics_hw_state *hw)
@@ -696,28 +773,9 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
 			hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 		}
 
-		if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
+		if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 &&
 		    ((buf[0] ^ buf[3]) & 0x02)) {
-			switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
-			default:
-				/*
-				 * if nExtBtn is greater than 8 it should be
-				 * considered invalid and treated as 0
-				 */
-				break;
-			case 8:
-				hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
-				hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
-			case 6:
-				hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
-				hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
-			case 4:
-				hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
-				hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
-			case 2:
-				hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
-				hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
-			}
+			synaptics_parse_ext_buttons(buf, priv, hw);
 		}
 	} else {
 		hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
@@ -779,12 +837,54 @@ static void synaptics_report_semi_mt_data(struct input_dev *dev,
 	}
 }
 
+static void synaptics_report_ext_buttons(struct psmouse *psmouse,
+					 const struct synaptics_hw_state *hw)
+{
+	struct input_dev *dev = psmouse->dev;
+	struct synaptics_data *priv = psmouse->private;
+	int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
+	char buf[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	int i;
+
+	if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
+		return;
+
+	/* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */
+	if (SYN_ID_FULL(priv->identity) == 0x801 &&
+	    !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
+		return;
+
+	if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) {
+		for (i = 0; i < ext_bits; i++) {
+			input_report_key(dev, BTN_0 + 2 * i,
+				hw->ext_buttons & (1 << i));
+			input_report_key(dev, BTN_1 + 2 * i,
+				hw->ext_buttons & (1 << (i + ext_bits)));
+		}
+		return;
+	}
+
+	/*
+	 * This generation of touchpads has the trackstick buttons
+	 * physically wired to the touchpad. Re-route them through
+	 * the pass-through interface.
+	 */
+	if (!priv->pt_port)
+		return;
+
+	/* The trackstick expects at most 3 buttons */
+	priv->pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons)      |
+			   SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
+			   SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
+
+	synaptics_pass_pt_packet(psmouse, priv->pt_port, buf);
+}
+
 static void synaptics_report_buttons(struct psmouse *psmouse,
 				     const struct synaptics_hw_state *hw)
 {
 	struct input_dev *dev = psmouse->dev;
 	struct synaptics_data *priv = psmouse->private;
-	int i;
 
 	input_report_key(dev, BTN_LEFT, hw->left);
 	input_report_key(dev, BTN_RIGHT, hw->right);
@@ -797,8 +897,7 @@ static void synaptics_report_buttons(struct psmouse *psmouse,
 		input_report_key(dev, BTN_BACK, hw->down);
 	}
 
-	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
-		input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
+	synaptics_report_ext_buttons(psmouse, hw);
 }
 
 static void synaptics_report_mt_data(struct psmouse *psmouse,
@@ -818,7 +917,7 @@ static void synaptics_report_mt_data(struct psmouse *psmouse,
 		pos[i].y = synaptics_invert_y(hw[i]->y);
 	}
 
-	input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res);
+	input_mt_assign_slots(dev, slot, pos, nsemi, 0);
 
 	for (i = 0; i < nsemi; i++) {
 		input_mt_slot(dev, slot[i]);
@@ -1019,7 +1118,8 @@ static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 		if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
 		    synaptics_is_pt_packet(psmouse->packet)) {
 			if (priv->pt_port)
-				synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
+				synaptics_pass_pt_packet(psmouse, priv->pt_port,
+							 psmouse->packet);
 		} else
 			synaptics_process_packet(psmouse);
 
@@ -1121,8 +1221,9 @@ static void set_input_params(struct psmouse *psmouse,
 		__set_bit(BTN_BACK, dev->keybit);
 	}
 
-	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
-		__set_bit(BTN_0 + i, dev->keybit);
+	if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10))
+		for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
+			__set_bit(BTN_0 + i, dev->keybit);
 
 	__clear_bit(EV_REL, dev->evbit);
 	__clear_bit(REL_X, dev->relbit);
@@ -1130,7 +1231,8 @@ static void set_input_params(struct psmouse *psmouse,
 
 	if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 		__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
-		if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
+		if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
+		    !SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10))
 			__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
 		/* Clickpads report only left button */
 		__clear_bit(BTN_RIGHT, dev->keybit);
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index fb3838ca28de..56faa7ec4434 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -22,6 +22,7 @@
 #define SYN_QUE_EXT_CAPAB_0C		0x0c
 #define SYN_QUE_EXT_MAX_COORDS		0x0d
 #define SYN_QUE_EXT_MIN_COORDS		0x0f
+#define SYN_QUE_MEXT_CAPAB_10		0x10
 
 /* synatics modes */
 #define SYN_BIT_ABSOLUTE_MODE		(1 << 7)
@@ -53,6 +54,7 @@
 #define SYN_EXT_CAP_REQUESTS(c)		(((c) & 0x700000) >> 20)
 #define SYN_CAP_MULTI_BUTTON_NO(ec)	(((ec) & 0x00f000) >> 12)
 #define SYN_CAP_PRODUCT_ID(ec)		(((ec) & 0xff0000) >> 16)
+#define SYN_MEXT_CAP_BIT(m)		((m) & (1 << 1))
 
 /*
  * The following describes response for the 0x0c query.
@@ -89,6 +91,30 @@
 #define SYN_CAP_REDUCED_FILTERING(ex0c)	((ex0c) & 0x000400)
 #define SYN_CAP_IMAGE_SENSOR(ex0c)	((ex0c) & 0x000800)
 
+/*
+ * The following descibes response for the 0x10 query.
+ *
+ * byte	mask	name			meaning
+ * ----	----	-------			------------
+ * 1	0x01	ext buttons are stick	buttons exported in the extended
+ *					capability are actually meant to be used
+ *					by the tracktick (pass-through).
+ * 1	0x02	SecurePad		the touchpad is a SecurePad, so it
+ *					contains a built-in fingerprint reader.
+ * 1	0xe0	more ext count		how many more extented queries are
+ *					available after this one.
+ * 2	0xff	SecurePad width		the width of the SecurePad fingerprint
+ *					reader.
+ * 3	0xff	SecurePad height	the height of the SecurePad fingerprint
+ *					reader.
+ */
+#define SYN_CAP_EXT_BUTTONS_STICK(ex10)	((ex10) & 0x010000)
+#define SYN_CAP_SECUREPAD(ex10)		((ex10) & 0x020000)
+
+#define SYN_CAP_EXT_BUTTON_STICK_L(eb)	(!!((eb) & 0x01))
+#define SYN_CAP_EXT_BUTTON_STICK_M(eb)	(!!((eb) & 0x02))
+#define SYN_CAP_EXT_BUTTON_STICK_R(eb)	(!!((eb) & 0x04))
+
 /* synaptics modes query bits */
 #define SYN_MODE_ABSOLUTE(m)		((m) & (1 << 7))
 #define SYN_MODE_RATE(m)		((m) & (1 << 6))
@@ -143,6 +169,7 @@ struct synaptics_data {
 	unsigned long int capabilities;		/* Capabilities */
 	unsigned long int ext_cap;		/* Extended Capabilities */
 	unsigned long int ext_cap_0c;		/* Ext Caps from 0x0c query */
+	unsigned long int ext_cap_10;		/* Ext Caps from 0x10 query */
 	unsigned long int identity;		/* Identification */
 	unsigned int x_res, y_res;		/* X/Y resolution in units/mm */
 	unsigned int x_max, y_max;		/* Max coordinates (from FW) */
@@ -156,6 +183,7 @@ struct synaptics_data {
 	bool disable_gesture;			/* disable gestures */
 
 	struct serio *pt_port;			/* Pass-through serio port */
+	unsigned char pt_buttons;		/* Pass-through buttons */
 
 	/*
 	 * Last received Advanced Gesture Mode (AGM) packet. An AGM packet
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 2310d863a6f1..1130c4059104 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -944,6 +944,7 @@ config TOUCHSCREEN_SUN4I
 	tristate "Allwinner sun4i resistive touchscreen controller support"
 	depends on ARCH_SUNXI || COMPILE_TEST
 	depends on HWMON
+	depends on THERMAL || !THERMAL_OF
 	help
 	  This selects support for the resistive touchscreen controller
 	  found on Allwinner sunxi SoCs.