Merge tag 'v4.0-rc1' into patchwork

Linux 34.0-rc1

* tag 'v4.0-rc1': (8947 commits)
  Linux 4.0-rc1
  autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
  procfs: fix race between symlink removals and traversals
  debugfs: leave freeing a symlink body until inode eviction
  Documentation/filesystems/Locking: ->get_sb() is long gone
  trylock_super(): replacement for grab_super_passive()
  fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
  SELinux: Use d_is_positive() rather than testing dentry->d_inode
  Smack: Use d_is_positive() rather than testing dentry->d_inode
  TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR()
  Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode
  Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb
  VFS: Split DCACHE_FILE_TYPE into regular and special types
  VFS: Add a fallthrough flag for marking virtual dentries
  VFS: Add a whiteout dentry type
  VFS: Introduce inode-getting helpers for layered/unioned fs environments
  kernel: make READ_ONCE() valid on const arguments
  blk-throttle: check stats_cpu before reading it from sysfs
  ...

6 files changed, 121 insertions, 79 deletions

diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 519392763393..b65850a41127 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -25,9 +25,7 @@ struct iio_buffer;
  *                      available.
  * @request_update:     if a parameter change has been marked, update underlying
  *                      storage.
- * @get_bytes_per_datum:get current bytes per datum
  * @set_bytes_per_datum:set number of bytes per datum
- * @get_length:         get number of datums in buffer
  * @set_length:         set number of datums in buffer
  * @release:            called when the last reference to the buffer is dropped,
  *                      should free all resources allocated by the buffer.
@@ -49,9 +47,7 @@ struct iio_buffer_access_funcs {
 
         int (*request_update)(struct iio_buffer *buffer);
 
-        int (*get_bytes_per_datum)(struct iio_buffer *buffer);
         int (*set_bytes_per_datum)(struct iio_buffer *buffer, size_t bpd);
-        int (*get_length)(struct iio_buffer *buffer);
         int (*set_length)(struct iio_buffer *buffer, int length);
 
         void (*release)(struct iio_buffer *buffer);
@@ -85,10 +81,11 @@ struct iio_buffer {
         bool                                    scan_timestamp;
         const struct iio_buffer_access_funcs    *access;
         struct list_head                        scan_el_dev_attr_list;
+        struct attribute_group                  buffer_group;
         struct attribute_group                  scan_el_group;
         wait_queue_head_t                       pollq;
         bool                                    stufftoread;
-        const struct attribute_group *attrs;
+        const struct attribute                  **attrs;
         struct list_head                        demux_list;
         void                                    *demux_bounce;
         struct list_head                        buffer_list;
@@ -117,15 +114,6 @@ int iio_scan_mask_query(struct iio_dev *indio_dev,
                         struct iio_buffer *buffer, int bit);
 
 /**
- * iio_scan_mask_set() - set particular bit in the scan mask
- * @indio_dev           IIO device structure
- * @buffer:             the buffer whose scan mask we are interested in
- * @bit:                the bit to be set.
- **/
-int iio_scan_mask_set(struct iio_dev *indio_dev,
-                      struct iio_buffer *buffer, int bit);
-
-/**
  * iio_push_to_buffers() - push to a registered buffer.
  * @indio_dev:          iio_dev structure for device.
  * @data:               Full scan.
@@ -159,56 +147,6 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
 
 int iio_update_demux(struct iio_dev *indio_dev);
 
-/**
- * iio_buffer_register() - register the buffer with IIO core
- * @indio_dev:          device with the buffer to be registered
- * @channels:           the channel descriptions used to construct buffer
- * @num_channels:       the number of channels
- **/
-int iio_buffer_register(struct iio_dev *indio_dev,
-                        const struct iio_chan_spec *channels,
-                        int num_channels);
-
-/**
- * iio_buffer_unregister() - unregister the buffer from IIO core
- * @indio_dev:          the device with the buffer to be unregistered
- **/
-void iio_buffer_unregister(struct iio_dev *indio_dev);
-
-/**
- * iio_buffer_read_length() - attr func to get number of datums in the buffer
- **/
-ssize_t iio_buffer_read_length(struct device *dev,
-                               struct device_attribute *attr,
-                               char *buf);
-/**
- * iio_buffer_write_length() - attr func to set number of datums in the buffer
- **/
-ssize_t iio_buffer_write_length(struct device *dev,
-                              struct device_attribute *attr,
-                              const char *buf,
-                              size_t len);
-/**
- * iio_buffer_store_enable() - attr to turn the buffer on
- **/
-ssize_t iio_buffer_store_enable(struct device *dev,
-                                struct device_attribute *attr,
-                                const char *buf,
-                                size_t len);
-/**
- * iio_buffer_show_enable() - attr to see if the buffer is on
- **/
-ssize_t iio_buffer_show_enable(struct device *dev,
-                               struct device_attribute *attr,
-                               char *buf);
-#define IIO_BUFFER_LENGTH_ATTR DEVICE_ATTR(length, S_IRUGO | S_IWUSR,   \
-                                           iio_buffer_read_length,      \
-                                           iio_buffer_write_length)
-
-#define IIO_BUFFER_ENABLE_ATTR DEVICE_ATTR(enable, S_IRUGO | S_IWUSR,   \
-                                           iio_buffer_show_enable,      \
-                                           iio_buffer_store_enable)
-
 bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
         const unsigned long *mask);
 
@@ -232,16 +170,6 @@ static inline void iio_device_attach_buffer(struct iio_dev *indio_dev,
 
 #else /* CONFIG_IIO_BUFFER */
 
-static inline int iio_buffer_register(struct iio_dev *indio_dev,
-                                           const struct iio_chan_spec *channels,
-                                           int num_channels)
-{
-        return 0;
-}
-
-static inline void iio_buffer_unregister(struct iio_dev *indio_dev)
-{}
-
 static inline void iio_buffer_get(struct iio_buffer *buffer) {}
 static inline void iio_buffer_put(struct iio_buffer *buffer) {}
 
diff --git a/include/linux/iio/common/ssp_sensors.h b/include/linux/iio/common/ssp_sensors.h
new file mode 100644
index 000000000000..f4d1b0edb432
--- /dev/null
+++ b/include/linux/iio/common/ssp_sensors.h
@@ -0,0 +1,82 @@
+/*
+ *  Copyright (C) 2014, Samsung Electronics Co. Ltd. All Rights Reserved.
+ *
+ *  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.
+ *
+ */
+#ifndef _SSP_SENSORS_H_
+#define _SSP_SENSORS_H_
+
+#include <linux/iio/iio.h>
+
+#define SSP_TIME_SIZE                           4
+#define SSP_ACCELEROMETER_SIZE                  6
+#define SSP_GYROSCOPE_SIZE                      6
+#define SSP_BIO_HRM_RAW_SIZE                    8
+#define SSP_BIO_HRM_RAW_FAC_SIZE                36
+#define SSP_BIO_HRM_LIB_SIZE                    8
+
+/**
+ * enum ssp_sensor_type - SSP sensor type
+ */
+enum ssp_sensor_type {
+        SSP_ACCELEROMETER_SENSOR = 0,
+        SSP_GYROSCOPE_SENSOR,
+        SSP_GEOMAGNETIC_UNCALIB_SENSOR,
+        SSP_GEOMAGNETIC_RAW,
+        SSP_GEOMAGNETIC_SENSOR,
+        SSP_PRESSURE_SENSOR,
+        SSP_GESTURE_SENSOR,
+        SSP_PROXIMITY_SENSOR,
+        SSP_TEMPERATURE_HUMIDITY_SENSOR,
+        SSP_LIGHT_SENSOR,
+        SSP_PROXIMITY_RAW,
+        SSP_ORIENTATION_SENSOR,
+        SSP_STEP_DETECTOR,
+        SSP_SIG_MOTION_SENSOR,
+        SSP_GYRO_UNCALIB_SENSOR,
+        SSP_GAME_ROTATION_VECTOR,
+        SSP_ROTATION_VECTOR,
+        SSP_STEP_COUNTER,
+        SSP_BIO_HRM_RAW,
+        SSP_BIO_HRM_RAW_FAC,
+        SSP_BIO_HRM_LIB,
+        SSP_SENSOR_MAX,
+};
+
+struct ssp_data;
+
+/**
+ * struct ssp_sensor_data - Sensor object
+ * @process_data:       Callback to feed sensor data.
+ * @type:               Used sensor type.
+ * @buffer:             Received data buffer.
+ */
+struct ssp_sensor_data {
+        int (*process_data)(struct iio_dev *indio_dev, void *buf,
+                            int64_t timestamp);
+        enum ssp_sensor_type type;
+        u8 *buffer;
+};
+
+void ssp_register_consumer(struct iio_dev *indio_dev,
+                           enum ssp_sensor_type type);
+
+int ssp_enable_sensor(struct ssp_data *data, enum ssp_sensor_type type,
+                      u32 delay);
+
+int ssp_disable_sensor(struct ssp_data *data, enum ssp_sensor_type type);
+
+u32 ssp_get_sensor_delay(struct ssp_data *data, enum ssp_sensor_type);
+
+int ssp_change_delay(struct ssp_data *data, enum ssp_sensor_type type,
+                     u32 delay);
+#endif /* _SSP_SENSORS_H_ */
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
index 651f9a0e2765..26fb8f6342bb 100644
--- a/include/linux/iio/consumer.h
+++ b/include/linux/iio/consumer.h
@@ -151,6 +151,16 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val);
 int iio_read_channel_processed(struct iio_channel *chan, int *val);
 
 /**
+ * iio_write_channel_raw() - write to a given channel
+ * @chan:               The channel being queried.
+ * @val:                Value being written.
+ *
+ * Note raw writes to iio channels are in dac counts and hence
+ * scale will need to be applied if standard units required.
+ */
+int iio_write_channel_raw(struct iio_channel *chan, int val);
+
+/**
  * iio_get_channel_type() - get the type of a channel
  * @channel:            The channel being queried.
  * @type:               The type of the channel.
@@ -191,7 +201,7 @@ int iio_read_channel_scale(struct iio_channel *chan, int *val,
  * The scale factor allows to increase the precession of the returned value. For
  * a scale factor of 1 the function will return the result in the normal IIO
  * unit for the channel type. E.g. millivolt for voltage channels, if you want
- * nanovolts instead pass 1000 as the scale factor.
+ * nanovolts instead pass 1000000 as the scale factor.
  */
 int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
         int *processed, unsigned int scale);
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 3642ce7ef512..80d855061064 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -38,6 +38,11 @@ enum iio_chan_info_enum {
         IIO_CHAN_INFO_HARDWAREGAIN,
         IIO_CHAN_INFO_HYSTERESIS,
         IIO_CHAN_INFO_INT_TIME,
+        IIO_CHAN_INFO_ENABLE,
+        IIO_CHAN_INFO_CALIBHEIGHT,
+        IIO_CHAN_INFO_CALIBWEIGHT,
+        IIO_CHAN_INFO_DEBOUNCE_COUNT,
+        IIO_CHAN_INFO_DEBOUNCE_TIME,
 };
 
 enum iio_shared_by {
@@ -284,10 +289,11 @@ static inline s64 iio_get_time_ns(void)
 /* Device operating modes */
 #define INDIO_DIRECT_MODE               0x01
 #define INDIO_BUFFER_TRIGGERED          0x02
+#define INDIO_BUFFER_SOFTWARE           0x04
 #define INDIO_BUFFER_HARDWARE           0x08
 
 #define INDIO_ALL_BUFFER_MODES                                  \
-        (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE)
+        (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE)
 
 #define INDIO_MAX_RAW_ELEMENTS          4
 
@@ -591,7 +597,8 @@ void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig);
 static inline bool iio_buffer_enabled(struct iio_dev *indio_dev)
 {
         return indio_dev->currentmode
-                & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE);
+                & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
+                   INDIO_BUFFER_SOFTWARE);
 }
 
 /**
diff --git a/include/linux/iio/kfifo_buf.h b/include/linux/iio/kfifo_buf.h
index 25eeac762e84..1683bc710d14 100644
--- a/include/linux/iio/kfifo_buf.h
+++ b/include/linux/iio/kfifo_buf.h
@@ -5,7 +5,10 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
 
-struct iio_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev);
+struct iio_buffer *iio_kfifo_allocate(void);
 void iio_kfifo_free(struct iio_buffer *r);
 
+struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev);
+void devm_iio_kfifo_free(struct device *dev, struct iio_buffer *r);
+
 #endif
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 4a2af8adf874..580ed5bdb3fa 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -30,6 +30,11 @@ enum iio_chan_type {
         IIO_CCT,
         IIO_PRESSURE,
         IIO_HUMIDITYRELATIVE,
+        IIO_ACTIVITY,
+        IIO_STEPS,
+        IIO_ENERGY,
+        IIO_DISTANCE,
+        IIO_VELOCITY,
 };
 
 enum iio_modifier {
@@ -59,7 +64,12 @@ enum iio_modifier {
         IIO_MOD_NORTH_MAGN,
         IIO_MOD_NORTH_TRUE,
         IIO_MOD_NORTH_MAGN_TILT_COMP,
-        IIO_MOD_NORTH_TRUE_TILT_COMP
+        IIO_MOD_NORTH_TRUE_TILT_COMP,
+        IIO_MOD_RUNNING,
+        IIO_MOD_JOGGING,
+        IIO_MOD_WALKING,
+        IIO_MOD_STILL,
+        IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z,
 };
 
 enum iio_event_type {
@@ -68,6 +78,7 @@ enum iio_event_type {
         IIO_EV_TYPE_ROC,
         IIO_EV_TYPE_THRESH_ADAPTIVE,
         IIO_EV_TYPE_MAG_ADAPTIVE,
+        IIO_EV_TYPE_CHANGE,
 };
 
 enum iio_event_info {
@@ -81,6 +92,7 @@ enum iio_event_direction {
         IIO_EV_DIR_EITHER,
         IIO_EV_DIR_RISING,
         IIO_EV_DIR_FALLING,
+        IIO_EV_DIR_NONE,
 };
 
 #define IIO_VAL_INT 1