adding memory-only logger

src/drivers/clk/clk-si5338.c

@@ -4579,7 +4579,7 @@ static void si5338_init_of(struct i2c_client *client)
 				return;
 			}
 			init_type=1;
-			/* falling to initialization */
+			// no break : falling to initialization */
 		case 1:
 			pre_init(client,1); // clear outputs and muxes - they will be programmed later
 			break;

src/drivers/elphel/Makefile

@@ -34,3 +34,4 @@ obj-$(CONFIG_ELPHEL393)           += cxi2c.o
 obj-$(CONFIG_ELPHEL393)           += x393_videomem.o
 obj-$(CONFIG_ELPHEL393)           += detect_sensors.o
 obj-$(CONFIG_ELPHEL393)           += x393_fpga_functions.o
+obj-$(CONFIG_ELPHEL393)           += klogger_393.o
\ No newline at end of file

src/drivers/elphel/klogger_393.h

+/**
+ * @file klogger_393.c
+ * @brief Header file for klogger_393.c
+ * @copyright Copyright (C) 2016 Elphel, Inc.
+ * @par <b>License</b>
+ *  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 3 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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef KLOGGER_393_H
+#define KLOGGER_393_H
+int klog393_puts(const char * str);
+int klog393_ts(const char * str);
+
+#endif

src/drivers/elphel/mt9x001.c

@@ -2197,7 +2197,7 @@ int mt9x001_init(struct platform_device *pdev)
 {
     int res;
     struct device *dev = &pdev->dev;
-    const struct of_device_id *match;
+//    const struct of_device_id *match;
     int sensor_port;
 
     for (sensor_port = 0; sensor_port < SENSOR_PORTS; sensor_port++) {

src/drivers/elphel/sensor_common.c

@@ -9,7 +9,7 @@
  * - tasklets
  * - device driver that includes waiting for the next frame regardless of compression
  * @copyright Copyright (C) 2016 Elphel, Inc.
- *
+ * @par <b>License</b>
  *  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 3 of the License, or

src/drivers/elphel/sensor_i2c.c

@@ -59,7 +59,7 @@ struct x393_i2c_device_list {
     x393_i2c_device_t i2c_dev;
     struct list_head  list;
 };
-const char of_prop_name[] = "elphel393-sensor-i2c,i2c_devices";
+const char sensor_i2c_of_prop_name[] = "elphel393-sensor-i2c,i2c_devices";
 const char group_name[] =   "i2c_classes";
 const int max_buf_len =     4096-256; ///< stop output when only 256 bytes are left in the caller's buffer
 const int max_i2c_classes = 256;
@@ -190,7 +190,7 @@ int i2c_page_alloc(int chn)
 #else
     spin_unlock_irqrestore(sensori2c_locks[chn],flags);
 #endif
-    dev_dbg(sdev, "Allocated page= %d for port %d, is RESET(chn=%d, group= 0x%08x bits = 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x )\n",
+    dev_dbg(sdev, "Allocated page= %d for port %d, is RESET(group= 0x%08x bits = 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x )\n",
             (g << 5) + b, chn,free_i2c_groups[chn],
             free_i2c_pages[chn][0],free_i2c_pages[chn][1],free_i2c_pages[chn][2],free_i2c_pages[chn][3],
             free_i2c_pages[chn][4],free_i2c_pages[chn][5],free_i2c_pages[chn][6],free_i2c_pages[chn][7]);
@@ -1592,9 +1592,9 @@ static void elphel393_sensor_i2c_init_of(struct platform_device *pdev) ///< Plat
     struct device *dev =&pdev->dev;
     if (node) {
         /*TODO: Configure some i2c devices here (slaves, formats, speeds) to be used by names*/
-        num_devs = of_property_count_strings(node,of_prop_name);
+        num_devs = of_property_count_strings(node,sensor_i2c_of_prop_name);
         for (nd=0; nd <num_devs; nd++){
-            if (of_property_read_string_index(node, of_prop_name, nd, &config_string)) {
+            if (of_property_read_string_index(node, sensor_i2c_of_prop_name, nd, &config_string)) {
                 pr_err("%s: No data for selected i2c device\n", __func__);
                 BUG();
             }

src/drivers/elphel/x393_fpga_functions.c

@@ -48,6 +48,11 @@ sec_usec_t * get_fpga_rtc(sec_usec_t * ts) ///< Pointer to a sec/usec structure
 //    x393_rtc_sec_t     sec;
     int i;
     if (!ts) return NULL;
+    if (!is_fpga_programmed()) {
+        ts->sec = 0;
+        ts->usec = 0;
+        return ts;
+    }
     spin_lock_bh(&fpga_time_lock);
     stat = x393_rtc_status();
     stat_ctrl.mode = 1;
@@ -72,11 +77,14 @@ void set_fpga_rtc (sec_usec_t ts) ///< timestamp providing seconds and microseco
     x393_rtc_sec_t     sec;
     usec.usec = ts.usec;
     sec.sec =   ts.sec;
+    if (!is_fpga_programmed())
+        return;
     spin_lock_bh(&fpga_time_lock);
     set_x393_rtc_usec(usec);
     set_x393_rtc_sec_set(sec);  // And apply
     spin_unlock_bh(&fpga_time_lock);
 }
+
 /** Check if bitstream is loaded */
 int is_fpga_programmed(void) ///< @return 0 - bitstream is NOT loaded, 1 - bitsteam IS loaded, -ENOMEM - error in ioremap
 {

src/include/uapi/elphel/x393_devices.h

@@ -91,6 +91,7 @@
 #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?)
 #define DEV393_MT9X001        ("",            "elphel393-mt9x001",   -1,  -1, "0666", "c")  ///< Used only in sysfs, no character device (yet?)
+#define DEV393_KLOGGER        ("klogger_393",      "klogger_393",    144,  1, "0666", "c")  ///< kernel event logger to memory (no i/o)
 
 
 #define _DEV393_PATH(n, ...) "/dev/"n