+ char devices for raw channels

src/drivers/elphel/x393_videomem.c

@@ -52,14 +52,22 @@ static DEFINE_SPINLOCK(lock); // for read-modify-write channel enable
 //       2. craete char device for r/w memory access
 static const char * const videomem_devs[]={
 	DEV393_DEVNAME(DEV393_VIDEOMEM_RAW),
-	DEV393_DEVNAME(DEV393_IMAGE_RAW)
+	DEV393_DEVNAME(DEV393_IMAGE_RAW),
+	DEV393_DEVNAME(DEV393_IMAGE_RAW0),
+	DEV393_DEVNAME(DEV393_IMAGE_RAW1),
+	DEV393_DEVNAME(DEV393_IMAGE_RAW2),
+	DEV393_DEVNAME(DEV393_IMAGE_RAW3)
 };
 
 static const int videomem_major = DEV393_MAJOR(DEV393_VIDEOMEM_RAW);
 
 static const int videomem_minor[]={
 	DEV393_MINOR(DEV393_VIDEOMEM_RAW),
-	DEV393_MINOR(DEV393_IMAGE_RAW)
+	DEV393_MINOR(DEV393_IMAGE_RAW),
+	DEV393_MINOR(DEV393_IMAGE_RAW0),
+	DEV393_MINOR(DEV393_IMAGE_RAW1),
+	DEV393_MINOR(DEV393_IMAGE_RAW2),
+	DEV393_MINOR(DEV393_IMAGE_RAW3)
 };
 
 /** @brief Global device class for sysfs */
@@ -739,7 +747,7 @@ static int videomem_open(struct inode *inode, struct file *filp)
 	//    /dev/raw1 -> /dev/image_raw
 	// there should be a way (there is no way) to read link name then extract channel number from it
 
-	pr_debug("DEV OPENED: %s\n",filp->f_path.dentry->d_iname);
+	//pr_debug("DEV OPENED: %s\n",filp->f_path.dentry->d_iname);
 
 	privData = (struct raw_priv_t*)kmalloc(sizeof(struct raw_priv_t), GFP_KERNEL);
 	if (!privData) {
@@ -753,9 +761,12 @@ static int videomem_open(struct inode *inode, struct file *filp)
 	privData->buf_size = pElphel_buf->raw_chn0_size*PAGE_SIZE;
 	privData->buf_size32 = (privData->buf_size)>>2;
 
+	// TODO: remove this
 	test_channel = 2;
+
 	membridge_sensor_port = test_channel;
 
+	// no need
 	frame_number = GLOBALPARS(membridge_sensor_port,G_THIS_FRAME) & PARS_FRAMES_MASK;
 
 	//calculate things

src/include/uapi/elphel/x393_devices.h

@@ -15,7 +15,7 @@
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
- 
+
 /* Each device node should be specified in the following format:
 #define <DEVICE_RFEFERENCE>   ("<dev path>",    "<driver_name>",  major, minor,"<permissions>","<b/c>") [optional comment]
  * Access to individual fields is provide with the macros defined below, for example:
@@ -106,6 +106,11 @@
 // Video memory access uses a single (shared) membridge module, so device driver should have exclusive access
 #define DEV393_VIDEOMEM_RAW   ("videomem_raw",      "video_mem",     142,  1, "0666", "c")  ///< Raw access to video memory using membridge module (NC393: Not yet implemented)
 #define DEV393_IMAGE_RAW      ("image_raw",         "video_mem",     142,  2, "0666", "c")  ///< Access to raw (uncompressed) data in video memory, frame-organized
+// 80-83 - minor to use minor_to_chn function
+#define DEV393_IMAGE_RAW0     ("image_raw0",        "video_mem",     142, 80, "0666", "c")  ///< Channel 0. Access to raw (uncompressed) data in video memory, frame-organized
+#define DEV393_IMAGE_RAW1     ("image_raw1",        "video_mem",     142, 81, "0666", "c")  ///< Channel 1. Access to raw (uncompressed) data in video memory, frame-organized
+#define DEV393_IMAGE_RAW2     ("image_raw2",        "video_mem",     142, 82, "0666", "c")  ///< Channel 2. Access to raw (uncompressed) data in video memory, frame-organized
+#define DEV393_IMAGE_RAW3     ("image_raw3",        "video_mem",     142, 83, "0666", "c")  ///< Channel 3. Access to raw (uncompressed) data in video memory, frame-organized
 
 #define DEV393_DETECT_SENSORS ("detect_sensors",    "detect_sensors",143,  1, "0666", "c")  ///< Probably not needed, only sysfs is used
 #define DEV393_I2C_SENSORS    ("",            "elphel393-sensor-i2c",-1,  -1, "0666", "c")  ///< Used only in sysfs, no character device (yet?)