Initial release bases on sensors-applet

1 files changed, 191 insertions, 0 deletions

diff --git a/plugins/i2c-sys/i2c-sys-plugin.c b/plugins/i2c-sys/i2c-sys-plugin.c
new file mode 100644
index 0000000..17535aa
--- /dev/null
+++ b/plugins/i2c-sys/i2c-sys-plugin.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2005-2009 Alex Murray <[email protected]>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif /* HAVE_STDIO_H */
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include "i2c-sys-plugin.h"
+
+const gchar *plugin_name = "i2c-sys";
+
+#define I2C_SYS_BASE_DIR "/sys"
+
+enum {
+	I2C_SYS_DEVICE_FILE_OPEN_ERROR,
+	I2C_SYS_DEVICE_FILE_READ_ERROR
+};
+
+static void i2c_sys_plugin_add_sensor(GList **sensors, const gchar *path) {
+	gchar *filename;
+	gchar *id;
+	gchar *label;
+	gboolean enable;
+	guint sensor_type;
+	IconType icon_type = GENERIC_ICON;
+
+	filename = g_path_get_basename(path);
+
+	/* setup temp2 as CPU sensor and enable it */
+	if (g_ascii_strcasecmp(filename, "temp2_input") == 0) {
+		id = g_strndup(filename, 5);
+		label = g_strdup(_("CPU"));
+		sensor_type = TEMP_SENSOR;
+		enable = TRUE;
+		icon_type = CPU_ICON;
+	} else {
+		switch(filename[0]) {
+		case 'c':
+			/* either current or cpu?_vid sensor */
+			if (filename[1] == 'u') { /* currents are curr?_input */
+				id = g_strndup(filename, 5);
+				label = g_strndup(filename, 5);
+				sensor_type = CURRENT_SENSOR;
+			}
+			else { /* cpu_vid is cpu?_vid */
+				id = g_strdup(filename);
+				label = g_strdup(filename);
+				sensor_type = VOLTAGE_SENSOR;
+			}
+			break;			
+		case 'f':     /* fans are "fan?_input" */
+			id = g_strndup(filename, 4);
+			label = g_strndup(filename, 4);
+			sensor_type = FAN_SENSOR;
+			icon_type = FAN_ICON;
+			break;
+		case 't':     /* temps are "temp?_input" */
+			id = g_strndup(filename, 5);
+			label = g_strndup(filename, 5);
+			sensor_type = TEMP_SENSOR;
+			break;
+		case 'i':     /* voltages are "in?_input" */
+			id = g_strndup(filename, 3);
+			label = g_strndup(filename, 3);
+			sensor_type = VOLTAGE_SENSOR;
+			break;
+		default:
+			/* SHOULDN'T BE ABLE
+			 * TO GET HERE!! */
+                        g_warning("filename:\"%s\" begins with a charater that is not covered by this switch statement... not adding sensor", filename);
+                        g_free(filename);
+                        g_free(id);
+                        g_free(label);
+
+                        return;
+
+		}
+		/* disable all other sensors */
+		enable = FALSE;
+	}
+	sensors_applet_plugin_add_sensor(sensors,
+                                         path,
+                                         id,
+                                         label, 
+                                         sensor_type,
+                                         enable,
+                                         icon_type,
+                                         DEFAULT_GRAPH_COLOR);
+	g_free(filename);
+	g_free(id);
+	g_free(label);
+}	
+
+
+static void i2c_sys_plugin_test_sensor(GList **sensors,
+                                       const gchar *path) {
+        gchar *filename;
+
+        filename = g_path_get_basename(path);
+
+        if ((g_str_has_suffix(filename, "_input") && 
+             (g_str_has_prefix(filename, "temp") || 
+              g_str_has_prefix(filename, "fan") || 
+              g_str_has_prefix(filename, "curr") || 
+              g_str_has_prefix(filename, "in"))) ||
+            (g_str_has_prefix(filename, "cpu") && 
+             (g_str_has_suffix(filename, "_vid")))) {
+                i2c_sys_plugin_add_sensor(sensors, path);
+                
+        }
+        g_free(filename);
+}
+
+
+/* to be called to setup for sys sensors */
+static GList *i2c_sys_plugin_init(void) {
+        GList *sensors = NULL;
+	/* call function to recursively look for sensors
+	   starting at the defined base directory */
+        sensors_applet_plugin_find_sensors(&sensors,
+                                           I2C_SYS_BASE_DIR,
+                                           i2c_sys_plugin_test_sensor);
+        return sensors;
+}
+
+
+static gdouble i2c_sys_plugin_get_sensor_value(const gchar *path, 
+                                               const gchar *id, 
+                                               SensorType type,
+                                               GError **error) {
+        
+	/* to open and access the value of each sensor */
+	FILE *fp;
+	gfloat sensor_value;
+
+	if (NULL == (fp = fopen(path, "r"))) {
+		g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_SYS_DEVICE_FILE_OPEN_ERROR, "Error opening sensor device file %s", path);
+		return -1.0;
+	}
+
+	if (fscanf(fp, "%f", &sensor_value) != 1) {
+		g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_SYS_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
+		fclose(fp);
+		return -1.0;
+	}
+	fclose(fp);
+
+	if (type != FAN_SENSOR) {
+		sensor_value /= 1000.0;
+	}
+
+	return (gdouble)sensor_value;
+}
+
+const gchar *sensors_applet_plugin_name(void) 
+{
+        return plugin_name;
+}
+
+GList *sensors_applet_plugin_init(void) 
+{
+        return i2c_sys_plugin_init();
+}
+
+gdouble sensors_applet_plugin_get_sensor_value(const gchar *path, 
+                                                const gchar *id, 
+                                                SensorType type,
+                                                GError **error) {
+        return i2c_sys_plugin_get_sensor_value(path, id, type, error);
+}