LC15: Add initial support for the NuRAN Wireless Litecell 1.5

This commit adds basic support for the Litecell 1.5. Multi-TRX is not
supported yet. Instead, multiple instances of the BTS can be launched
using command line parameter -n <HW_TRX_NR> to specify if TRX 1 or
2 must be used by the bts. Note that only TRX 1 opens a connection to
the PCU. Full support for GPRS on both TRX will come at the same time
than the multi-TRX support.

The BTS manager has been adapted to match the new hardware but otherwise
it has not been improved or changed compared to the one used on the
SuperFemto/Litecell (sysmobts).

1 files changed, 117 insertions, 0 deletions

diff --git a/src/osmo-bts-litecell15/misc/lc15bts_temp.c b/src/osmo-bts-litecell15/misc/lc15bts_temp.c
new file mode 100644
index 00000000..fa6300e7
--- /dev/null
+++ b/src/osmo-bts-litecell15/misc/lc15bts_temp.c
@@ -0,0 +1,117 @@
+/* Copyright (C) 2015 by Yves Godin <support@nuranwireless.com>
+ * 
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#include <osmocom/core/utils.h>
+
+#include "lc15bts_temp.h"
+
+
+static const char *temp_devs[_NUM_TEMP_SENSORS] = {
+        [LC15BTS_TEMP_SUPPLY]	= "/sys/bus/i2c/devices/2-004d/hwmon/hwmon5/temp1_",
+        [LC15BTS_TEMP_SOC]	= "/sys/class/hwmon/hwmon1/temp1_",
+        [LC15BTS_TEMP_FPGA]	= "/sys/devices/0.iio_hwmon/temp1_",
+        [LC15BTS_TEMP_MEMORY]	= "/sys/bus/i2c/devices/2-004c/hwmon/hwmon4/temp1_",
+        [LC15BTS_TEMP_TX1]	= "/sys/devices/0.ncp15xh103_tx1/temp1_",
+        [LC15BTS_TEMP_TX2]	= "/sys/devices/0.ncp15xh103_tx2/temp1_",
+        [LC15BTS_TEMP_PA1]	= "/sys/bus/i2c/devices/2-004d/hwmon/hwmon5/temp2_",
+        [LC15BTS_TEMP_PA2]	= "/sys/bus/i2c/devices/2-004c/hwmon/hwmon4/temp2_",
+};
+
+static const int temp_has_fault[_NUM_TEMP_SENSORS] = {
+        [LC15BTS_TEMP_PA1]	= 1,
+        [LC15BTS_TEMP_PA2]	= 1,
+};
+
+static const char *temp_type_str[_NUM_TEMP_TYPES] = {
+	[LC15BTS_TEMP_INPUT] = "input",
+	[LC15BTS_TEMP_LOWEST] = "lowest",
+	[LC15BTS_TEMP_HIGHEST] = "highest",
+	[LC15BTS_TEMP_FAULT] = "fault",
+};
+
+int lc15bts_temp_get(enum lc15bts_temp_sensor sensor,
+		      enum lc15bts_temp_type type)
+{
+	char buf[PATH_MAX];
+	char tempstr[8];
+	char faultstr[8];
+	int fd, rc;
+
+	if (sensor < 0 || sensor >= _NUM_TEMP_SENSORS)
+		return -EINVAL;
+
+	if (type >= ARRAY_SIZE(temp_type_str))
+		return -EINVAL;
+
+	snprintf(buf, sizeof(buf)-1, "%s%s", temp_devs[sensor], temp_type_str[type]);
+	buf[sizeof(buf)-1] = '\0';
+
+	fd = open(buf, O_RDONLY);
+	if (fd < 0)
+		return fd;
+
+	rc = read(fd, tempstr, sizeof(tempstr));
+	tempstr[sizeof(tempstr)-1] = '\0';
+	if (rc < 0) {
+		close(fd);
+		return rc;
+	}
+	if (rc == 0) {
+		close(fd);
+		return -EIO;
+	}
+	close(fd);
+
+	// Check fault
+	if (type == LC15BTS_TEMP_FAULT || !temp_has_fault[sensor])
+		return atoi(tempstr);
+		
+        snprintf(buf, sizeof(buf)-1, "%s%s",  temp_devs[sensor], temp_type_str[LC15BTS_TEMP_FAULT]);
+        buf[sizeof(buf)-1] = '\0';
+
+        fd = open(buf, O_RDONLY);
+        if (fd < 0)
+                return fd;
+
+        rc = read(fd, faultstr, sizeof(faultstr));
+        tempstr[sizeof(faultstr)-1] = '\0';
+        if (rc < 0) {
+                close(fd);
+                return rc;
+        }
+        if (rc == 0) {
+                close(fd);
+                return -EIO;
+        }
+        close(fd);
+
+	if (atoi(faultstr))
+		return -EIO;
+
+	return atoi(tempstr);
+}
+