Merge tag 'staging-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver tree merge from Greg Kroah-Hartman:
 "Here's the big staging tree merge for 3.8-rc1

  There's a lot of patches in here, the majority being the comedi
  rework/cleanup that has been ongoing and is causing a huge reduction
  in overall code size, which is amazing to watch.  We also removed some
  older drivers (telephony and rts_pstor), and added a new one (fwserial
  which also came in through the tty tree due to tty api changes, take
  that one if you get merge conflicts.)

  The iio and ipack drivers are moving out of the staging area into
  their own part of the kernel as they have been cleaned up sufficiently
  and are working well.

  Overall, again a reduction of code:
   768 files changed, 31887 insertions(+), 82166 deletions(-)

  All of this has been in the linux-next tree for a while.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'staging-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1298 commits)
  iio: imu: adis16480: remove duplicated include from adis16480.c
  iio: gyro: adis16136: remove duplicated include from adis16136.c
  iio:imu: adis16480: show_firmware() buffer too small
  iio:gyro: adis16136: divide by zero in write_frequency()
  iio: adc: Add Texas Instruments ADC081C021/027 support
  iio:ad7793: Add support for the ad7796 and ad7797
  iio:ad7793: Add support for the ad7798 and ad7799
  staging:iio: Move ad7793 driver out of staging
  staging:iio:ad7793: Implement stricter id checking
  staging:iio:ad7793: Move register definitions from header to source
  staging:iio:ad7793: Rework regulator handling
  staging:iio:ad7793: Rework platform data
  staging:iio:ad7793: Use kstrtol instead of strict_strtol
  staging:iio:ad7793: Use usleep_range instead of msleep
  staging:iio:ad7793: Fix temperature scale
  staging:iio:ad7793: Fix VDD monitor scale
  staging: gdm72xx: unlock on error in init_usb()
  staging: panel: pass correct lengths to keypad_send_key()
  staging: comedi: addi_apci_2032: fix interrupt support
  staging: comedi: addi_apci_2032: move i_APCI2032_ConfigDigitalOutput()
  ...

1 files changed, 37 insertions, 69 deletions

diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
index 277491a877ea..299f51810199 100644
--- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
+++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
@@ -31,6 +31,7 @@
 #include <linux/interrupt.h>
 #include <linux/regulator/consumer.h>
 #include <linux/module.h>
+#include <linux/input/mt.h>
 #include "synaptics_i2c_rmi4.h"
 
 /* TODO: for multiple device support will need a per-device mutex */
@@ -67,7 +68,6 @@
 #define PDT_START_SCAN_LOCATION (0x00E9)
 #define PDT_END_SCAN_LOCATION	(0x000A)
 #define PDT_ENTRY_SIZE		(0x0006)
-#define RMI4_NUMBER_OF_MAX_FINGERS		(8)
 #define SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM	(0x11)
 #define SYNAPTICS_RMI4_DEVICE_CONTROL_FUNC_NUM	(0x01)
 
@@ -164,6 +164,7 @@ struct synaptics_rmi4_device_info {
  * @regulator: pointer to the regulator structure
  * @wait: wait queue structure variable
  * @touch_stopped: flag to stop the thread function
+ * @fingers_supported: maximum supported fingers
  *
  * This structure gives the device data information.
  */
@@ -184,6 +185,7 @@ struct synaptics_rmi4_data {
 	struct regulator	*regulator;
 	wait_queue_head_t	wait;
 	bool			touch_stopped;
+	unsigned char		fingers_supported;
 };
 
 /**
@@ -303,22 +305,21 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata,
 	/* number of touch points - fingers down in this case */
 	int	touch_count = 0;
 	int	finger;
-	int	fingers_supported;
 	int	finger_registers;
 	int	reg;
 	int	finger_shift;
 	int	finger_status;
 	int	retval;
+	int	x, y;
+	int	wx, wy;
 	unsigned short	data_base_addr;
 	unsigned short	data_offset;
 	unsigned char	data_reg_blk_size;
 	unsigned char	values[2];
 	unsigned char	data[DATA_LEN];
-	int	x[RMI4_NUMBER_OF_MAX_FINGERS];
-	int	y[RMI4_NUMBER_OF_MAX_FINGERS];
-	int	wx[RMI4_NUMBER_OF_MAX_FINGERS];
-	int	wy[RMI4_NUMBER_OF_MAX_FINGERS];
+	unsigned char	fingers_supported = pdata->fingers_supported;
 	struct	i2c_client *client = pdata->i2c_client;
+	struct	input_dev *input_dev = pdata->input_dev;
 
 	/* get 2D sensor finger data */
 	/*
@@ -333,7 +334,6 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata,
 	 *	10 = finger present but data may not be accurate,
 	 *	11 = reserved for product use.
 	 */
-	fingers_supported	= rfi->num_of_data_points;
 	finger_registers	= (fingers_supported + 3)/4;
 	data_base_addr		= rfi->fn_desc.data_base_addr;
 	retval = synaptics_rmi4_i2c_block_read(pdata, data_base_addr, values,
@@ -358,7 +358,11 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata,
 		 * if finger status indicates a finger is present then
 		 * read the finger data and report it
 		 */
-		if (finger_status == 1 || finger_status == 2) {
+		input_mt_slot(input_dev, finger);
+		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER,
+							finger_status != 0);
+
+		if (finger_status) {
 			/* Read the finger data */
 			data_offset = data_base_addr +
 					((finger * data_reg_blk_size) +
@@ -367,50 +371,33 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata,
 						data_offset, data,
 						data_reg_blk_size);
 			if (retval != data_reg_blk_size) {
-				printk(KERN_ERR "%s:read data failed\n",
+				dev_err(&client->dev, "%s:read data failed\n",
 								__func__);
 				return 0;
-			} else {
-				x[touch_count]	=
-					(data[0] << 4) | (data[2] & MASK_4BIT);
-				y[touch_count]	=
-					(data[1] << 4) |
-					((data[2] >> 4) & MASK_4BIT);
-				wy[touch_count]	=
-						(data[3] >> 4) & MASK_4BIT;
-				wx[touch_count]	=
-						(data[3] & MASK_4BIT);
-
-				if (pdata->board->x_flip)
-					x[touch_count] =
-						pdata->sensor_max_x -
-								x[touch_count];
-				if (pdata->board->y_flip)
-					y[touch_count] =
-						pdata->sensor_max_y -
-								y[touch_count];
 			}
+			x = (data[0] << 4) | (data[2] & MASK_4BIT);
+			y = (data[1] << 4) | ((data[2] >> 4) & MASK_4BIT);
+			wy = (data[3] >> 4) & MASK_4BIT;
+			wx = (data[3] & MASK_4BIT);
+
+			if (pdata->board->x_flip)
+				x = pdata->sensor_max_x - x;
+			if (pdata->board->y_flip)
+				y = pdata->sensor_max_y - y;
+
+			input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+								max(wx, wy));
+			input_report_abs(input_dev, ABS_MT_POSITION_X, x);
+			input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
+
 			/* number of active touch points */
 			touch_count++;
 		}
 	}
 
-	/* report to input subsystem */
-	if (touch_count) {
-		for (finger = 0; finger < touch_count; finger++) {
-			input_report_abs(pdata->input_dev, ABS_MT_TOUCH_MAJOR,
-						max(wx[finger] , wy[finger]));
-			input_report_abs(pdata->input_dev, ABS_MT_POSITION_X,
-								x[finger]);
-			input_report_abs(pdata->input_dev, ABS_MT_POSITION_Y,
-								y[finger]);
-			input_mt_sync(pdata->input_dev);
-		}
-	} else
-		input_mt_sync(pdata->input_dev);
-
 	/* sync after groups of events */
-	input_sync(pdata->input_dev);
+	input_mt_sync_frame(input_dev);
+	input_sync(input_dev);
 	/* return the number of touch points */
 	return touch_count;
 }
@@ -575,6 +562,7 @@ static int synpatics_rmi4_touchpad_detect(struct synaptics_rmi4_data *pdata,
 		if ((queries[1] & MASK_3BIT) == 5)
 			rfi->num_of_data_points = 10;
 	}
+	pdata->fingers_supported = rfi->num_of_data_points;
 	/* Need to get interrupt info for handling interrupts */
 	rfi->index_to_intr_reg = (interruptcount + 7)/8;
 	if (rfi->index_to_intr_reg != 0)
@@ -891,7 +879,7 @@ static int synaptics_rmi4_i2c_query_device(struct synaptics_rmi4_data *pdata)
  * the rmi4 Physical Device Table and enumerate any rmi4 functions that
  * have data sources associated with them.
  */
-static int __devinit synaptics_rmi4_probe
+static int synaptics_rmi4_probe
 	(struct i2c_client *client, const struct i2c_device_id *dev_id)
 {
 	int retval;
@@ -988,6 +976,8 @@ static int __devinit synaptics_rmi4_probe
 					rmi4_data->sensor_max_y, 0, 0);
 	input_set_abs_params(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, 0,
 						MAX_TOUCH_MAJOR, 0, 0);
+	input_mt_init_slots(rmi4_data->input_dev,
+				rmi4_data->fingers_supported, 0);
 
 	/* Clear interrupts */
 	synaptics_rmi4_i2c_block_read(rmi4_data,
@@ -1032,7 +1022,7 @@ err_input:
  * This function uses to remove the i2c-client
  * touchscreen driver and returns integer.
  */
-static int __devexit synaptics_rmi4_remove(struct i2c_client *client)
+static int synaptics_rmi4_remove(struct i2c_client *client)
 {
 	struct synaptics_rmi4_data *rmi4_data = i2c_get_clientdata(client);
 	const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board;
@@ -1140,33 +1130,11 @@ static struct i2c_driver synaptics_rmi4_driver = {
 #endif
 	},
 	.probe		=	synaptics_rmi4_probe,
-	.remove		=	__devexit_p(synaptics_rmi4_remove),
+	.remove		=	synaptics_rmi4_remove,
 	.id_table	=	synaptics_rmi4_id_table,
 };
-/**
- * synaptics_rmi4_init() - Initialize the touchscreen driver
- *
- * This function uses to initializes the synaptics
- * touchscreen driver and returns integer.
- */
-static int __init synaptics_rmi4_init(void)
-{
-	return i2c_add_driver(&synaptics_rmi4_driver);
-}
-/**
- * synaptics_rmi4_exit() - De-initialize the touchscreen driver
- *
- * This function uses to de-initialize the synaptics
- * touchscreen driver and returns none.
- */
-static void __exit synaptics_rmi4_exit(void)
-{
-	i2c_del_driver(&synaptics_rmi4_driver);
-}
-
 
-module_init(synaptics_rmi4_init);
-module_exit(synaptics_rmi4_exit);
+module_i2c_driver(synaptics_rmi4_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("naveen.gaddipati@stericsson.com, js.ha@stericsson.com");