merged with framepars

src/arch/arm/boot/dts/elphel393_1_mt9p006.dts

@@ -299,5 +299,15 @@
         klogger-393,buffer_size = <1048576>; 
     } ;
     
+/* i2c driver for the extension boards, such as imu, gps, etc */    
+    elphel393_ext_i2c:elphel393-ext-i2c@0{
+        compatible =    "elphel,elphel393-ext-i2c-1.00";
+        time_scl_high =     <3>; /*  SCL high duration (us) */
+        time_scl_low =      <3>; /*  SCL low duration (us) */
+        time_slave2master = <2>; /*  slave -> master delay (us) */
+        time_master2slave = <2>; /*  master -> slave delay (us) */
+        filter_sda =        <7>; /*  filter SDA read data by testing multiple times - currently just zero/non zero  */
+        filter_scl =        <7>; /* filter SCL read data by testing multiple times - currently just zero/non zero  */
+    };
     
 };
\ No newline at end of file

src/arch/arm/boot/dts/elphel393_4_mt9p006.dts

@@ -298,6 +298,15 @@
         compatible = "elphel,klogger-393-1.00";
         klogger-393,buffer_size = <1048576>; 
     } ;
-    
+/* i2c driver for the extension boards, such as imu, gps, etc */    
+    elphel393_ext_i2c:elphel393-ext-i2c@0{
+        compatible =    "elphel,elphel393-ext-i2c-1.00";
+        time_scl_high =     <3>; /*  SCL high duration (us) */
+        time_scl_low =      <3>; /*  SCL low duration (us) */
+        time_slave2master = <2>; /*  slave -> master delay (us) */
+        time_master2slave = <2>; /*  master -> slave delay (us) */
+        filter_sda =        <7>; /*  filter SDA read data by testing multiple times - currently just zero/non zero  */
+        filter_scl =        <7>; /* filter SCL read data by testing multiple times - currently just zero/non zero  */
+    };
     
 };
\ No newline at end of file

src/arch/arm/boot/dts/elphel393_eyesis.dts

@@ -299,5 +299,15 @@
         klogger-393,buffer_size = <1048576>; 
     } ;
     
+/* i2c driver for the extension boards, such as imu, gps, etc */    
+    elphel393_ext_i2c:elphel393-ext-i2c@0{
+        compatible =    "elphel,elphel393-ext-i2c-1.00";
+        time_scl_high =     <3>; /*  SCL high duration (us) */
+        time_scl_low =      <3>; /*  SCL low duration (us) */
+        time_slave2master = <2>; /*  slave -> master delay (us) */
+        time_master2slave = <2>; /*  master -> slave delay (us) */
+        filter_sda =        <7>; /*  filter SDA read data by testing multiple times - currently just zero/non zero  */
+        filter_scl =        <7>; /* filter SCL read data by testing multiple times - currently just zero/non zero  */
+    };
     
 };
\ No newline at end of file

src/arch/arm/boot/dts/elphel393_eyesis_bottom2.dts

@@ -299,5 +299,15 @@
         klogger-393,buffer_size = <1048576>; 
     } ;
     
+/* i2c driver for the extension boards, such as imu, gps, etc */    
+    elphel393_ext_i2c:elphel393-ext-i2c@0{
+        compatible =    "elphel,elphel393-ext-i2c-1.00";
+        time_scl_high =     <3>; /*  SCL high duration (us) */
+        time_scl_low =      <3>; /*  SCL low duration (us) */
+        time_slave2master = <2>; /*  slave -> master delay (us) */
+        time_master2slave = <2>; /*  master -> slave delay (us) */
+        filter_sda =        <7>; /*  filter SDA read data by testing multiple times - currently just zero/non zero  */
+        filter_scl =        <7>; /* filter SCL read data by testing multiple times - currently just zero/non zero  */
+    };
     
 };
\ No newline at end of file

src/drivers/elphel/detect_sensors.c

@@ -246,7 +246,6 @@ static int get_channel_sub_from_name(struct device_attribute *attr) ///< Linux k
 
 static ssize_t show_port_mux(struct device *dev, struct device_attribute *attr, char *buf)
 {
-    int i;
     const char * name = get_name_by_code(get_detected_mux_code(get_channel_from_name(attr)), DETECT_MUX);
     if (name) return sprintf(buf,"%s\n", name);
     // Should never get here
@@ -254,7 +253,6 @@ static ssize_t show_port_mux(struct device *dev, struct device_attribute *attr,
 }
 static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, char *buf)
 {
-    int i;
     int psch = get_channel_sub_from_name(attr);
     int port = (psch>>4) &3;
     int sub_chn = psch &3;
@@ -265,11 +263,11 @@ static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, ch
 }
 static ssize_t store_port_mux(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
-    size_t len;
+//    size_t len;
     char name[80];
     int port = get_channel_from_name(attr);
-    int i, code, rslt;
-    if (sscanf(buf, "%79s", name, &len)){
+    int rslt;
+    if (sscanf(buf, "%79s", name)){
         if ((rslt = set_detected_mux_code( port, get_code_by_name(name, DETECT_MUX)))<0)
             return rslt;
 
@@ -278,13 +276,13 @@ static ssize_t store_port_mux(struct device *dev, struct device_attribute *attr,
 }
 static ssize_t store_sensor(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
-    size_t len;
+//    size_t len;
     char name[80];
     int psch = get_channel_sub_from_name(attr);
     int port = (psch>>4) &3;
     int sub_chn = psch &3;
-    int i, rslt;
-    if (sscanf(buf, "%79s", name, &len)){
+    int rslt;
+    if (sscanf(buf, "%79s", name)){
         if ((rslt = set_detected_sensor_code(port, sub_chn, get_code_by_name(name, DETECT_SENSOR)))<0)
             return rslt;
     }

src/drivers/elphel/exif393.c

@@ -501,7 +501,7 @@ loff_t exif_lseek  (struct file * file, loff_t offset, int orig) {
 	int p=(int)file->private_data;
 	int thissize=minor_file_size(p);
 	int maxsize=minor_max_size(p);
-//    int fp;
+    int fp;
     dev_dbg(g_devfp_ptr,"exif_lseek, minor=%d, offset = 0x%llx, orig=%d\n",p,offset,orig);
 	//   int sensor_port;
 	switch (orig) {
@@ -548,7 +548,9 @@ loff_t exif_lseek  (struct file * file, loff_t offset, int orig) {
 			case DEV393_MINOR(DEV393_EXIF_META1):
 			case DEV393_MINOR(DEV393_EXIF_META2):
 			case DEV393_MINOR(DEV393_EXIF_META3):
-				file->f_pos=offset*sizeof(struct exif_dir_table_t);
+                fp= dir_find_tag (offset);
+                if (fp < 0) return -EOVERFLOW; // tag is not in the directory
+                file->f_pos=fp;
 				break;
             case DEV393_MINOR(DEV393_EXIF_METADIR):
                 file->f_pos=offset*sizeof(struct exif_dir_table_t);
@@ -602,8 +604,11 @@ ssize_t    exif_write  (struct file * file, const char * buf, size_t count, loff
 	char tmp[MAX_EXIF_SIZE]; //! Or is it possible to disable IRQ while copy_from_user()?
 	unsigned long flags;
 	int disabled_err=0;
+    dev_dbg(g_devfp_ptr,"minor=0x%x\n", p);
+
 	if ((*off+count)>maxsize) {
-	    dev_warn(g_devfp_ptr,"%s:%d: Data (0x%x) does not fit into 0x%x bytes\n",__FILE__,__LINE__, (int) (*off+count), maxsize);
+//	    dev_warn(g_devfp_ptr,"%s:%d: Data (0x%x) does not fit into 0x%x bytes\n",__FILE__,__LINE__, (int) (*off+count), maxsize);
+        dev_dbg(g_devfp_ptr,"Data (0x%x) does not fit into 0x%x bytes, minor = 0x%x\n",(int) (*off+count), maxsize, p);
 		return -EOVERFLOW;
 	}
 	switch (p) {

src/drivers/elphel/sensor_i2c.c

@@ -44,7 +44,6 @@
 #include <linux/of.h>
 #include <linux/of_fdt.h>
 #include <linux/of_net.h>
-#include <linux/platform_device.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
 

src/include/uapi/elphel/c313a.h

@@ -1652,7 +1652,7 @@ struct p_names_t {
 
 
 // make this structure common for sensors, add fields as needed
-struct sensor_t {
+struct __attribute__((__packed__)) sensor_t {
 // sensor constants
    unsigned long  imageWidth;     ///< nominal image width for final images
    unsigned long  imageHeight;    ///< nominal image height for final images
@@ -1789,7 +1789,7 @@ struct i2c_timing_t {
 
 #define GAMMA_SCALE_SHIFT     10  // when scaling - shift right by GAMMA_SCALE_SHIFT (treat scale as 6.10)
 #define GAMMA_SCLALE_1 ( 1 << GAMMA_SCALE_SHIFT )      // gamma scale 1.0 - 0x400
-struct gamma_stuct_t {
+struct __attribute__((__packed__)) gamma_stuct_t {
     union {
         unsigned long hash32; /// fully identifies current table
         struct {

src/include/uapi/elphel/exifa.h

@@ -43,7 +43,7 @@ or Rational or else. The generated Exif header copies that variable fileds on to
 
 The compressed data buffer is stored in "meta pages", one per frame 
 */
-struct exif_dir_table_t {
+struct __attribute__((__packed__)) exif_dir_table_t {
         union {
           unsigned long ltag;// tag group and tag combined
           struct {
@@ -112,13 +112,13 @@ struct exif_dir_table_t {
 //  array(0x9003,2,"2001:06:21 12:00:00","len"=> 20), //date/time original time created, always use 20 bytes (19 ."\0")
 //  array(0x9291,2,"0        ") //original time sub-second length=10  9 ."\0"
 ///move back to interframe_params_t?
-struct frame_exif_t {
+struct __attribute__((__packed__)) frame_exif_t {
           unsigned short meta_index;     //! index of the linked meta page
           unsigned short signffff;       //! should be 0xffff - it will be a signature that JPEG data was not overwritten
           unsigned long  frame_length;   //! frame length
 };
 
-struct meta_GPSInfo_t {
+struct __attribute__((__packed__)) meta_GPSInfo_t {
    unsigned char GPSLatitudeRef; //"N"/"S"
    unsigned long GPSLatitude_deg_nom;
    unsigned long GPSLatitude_deg_denom;
@@ -142,7 +142,7 @@ struct meta_GPSInfo_t {
    unsigned char GPSMeasureMode;
 };
 //hack - use
-struct meta_CompassInfo_t {
+struct __attribute__((__packed__)) meta_CompassInfo_t {
 //   unsigned char GPSImgDirectionRef; //"M"/"T" //0x10
    unsigned long CompassDirection_nom; //0x11
    unsigned long CompassDirection_denom;