diff options
Diffstat (limited to 'plugins/i2c-proc/i2c-proc-plugin.c')
| -rw-r--r-- | plugins/i2c-proc/i2c-proc-plugin.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/plugins/i2c-proc/i2c-proc-plugin.c b/plugins/i2c-proc/i2c-proc-plugin.c new file mode 100644 index 0000000..217654c --- /dev/null +++ b/plugins/i2c-proc/i2c-proc-plugin.c @@ -0,0 +1,234 @@ +/* + * 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 */ + +#ifdef HAVE_LOCALE_H +#include <locale.h> +#endif + +#include <glib.h> +#include <glib/gi18n.h> +#include "i2c-proc-plugin.h" + +const gchar *plugin_name = "i2c-proc"; + +#define I2C_PROC_BASE_DIR "/proc/sys/dev/sensors" + +enum { + I2C_PROC_DEVICE_FILE_OPEN_ERROR, + I2C_PROC_DEVICE_FILE_READ_ERROR +}; + +static void i2c_proc_plugin_add_sensor(GList **sensors, + const gchar *path) { + gchar *filename; + gchar *label; + gboolean enable; + SensorType 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") == 0) { + sensor_type = TEMP_SENSOR; + label = g_strdup(_("CPU")); + enable = TRUE; + icon_type = CPU_ICON; + } else { + label = g_strdup(filename); + + switch(filename[0]) { + case 'c': /* currents are "curr?" */ + sensor_type = CURRENT_SENSOR; + break; + case 'f': /* fans are "fan?" */ + sensor_type = FAN_SENSOR; + icon_type = FAN_ICON; + break; + case 'i': /* voltages are "in?" */ + sensor_type = VOLTAGE_SENSOR; + break; + case 't': /* temps are "temp?" */ + sensor_type = TEMP_SENSOR; + break; + case 'v': /* vids are just vid */ + sensor_type = VOLTAGE_SENSOR; + break; + default: + /* SHOULDN'T BE ABLE + * TO GET HERE!! */ + g_debug("error in i2c-proc sensor detection code - unhandled sensor filename %s", filename); + g_free(filename); + g_free(label); + return; + } + /* disable all other sensors */ + enable = FALSE; + } + sensors_applet_plugin_add_sensor(sensors, + path, + filename, + label, + sensor_type, + enable, + icon_type, + DEFAULT_GRAPH_COLOR); + + + g_free(filename); + g_free(label); +} + +static void i2c_proc_plugin_test_sensor(GList **sensors, const gchar *path) { + gchar *filename; + + filename = g_path_get_basename(path); + /* see if filename starts with any of the sensor + prefixes */ + if (g_str_has_prefix(filename, "curr") || + (g_str_has_prefix(filename, "fan") && + !g_str_has_prefix(filename, "fan_div")) || + g_str_has_prefix(filename, "in") || + g_str_has_prefix(filename, "temp") || + g_str_has_prefix(filename, "vid")) { + i2c_proc_plugin_add_sensor(sensors, path); + } + g_free(filename); + +} + + +/* to be called to setup for proc sensors */ +static GList *i2c_proc_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_PROC_BASE_DIR, i2c_proc_plugin_test_sensor); + return sensors; +} + +static gdouble i2c_proc_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 float1, float2, float3; + gint int1, int2; + + gfloat sensor_value = -1.0; + + gchar *old_locale = NULL; + + /* always use C locale */ + if (NULL == (old_locale = setlocale(LC_NUMERIC, "C"))) { + g_warning("Could not change locale to C locale for reading i2c-proc device files.. will try regardless"); + } + + if (NULL == (fp = fopen(path, "r"))) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_OPEN_ERROR, "Error opening sensor device file %s", path); + + } else { + + switch (type) { + case CURRENT_SENSOR: + + if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + } else { + sensor_value = float3; + } + break; + + case FAN_SENSOR: + if (fscanf(fp, "%d %d", &int1, &int2) != 2) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + + } else { + sensor_value = (gfloat)int2; + } + break; + + case VOLTAGE_SENSOR: + /* is it CPU_VID or IN */ + switch(id[0]) { + case 'i': + if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + } else { + sensor_value = float3; + } + break; + + case 'v': + /* want first value in file as float */ + if (fscanf(fp, "%f", &float1) != 1) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + } else { + sensor_value = float1; + } + break; + default: + g_debug("error in i2c-proc sensor read value function code - unhandled sensor id %s", id); + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + } + break; + + case TEMP_SENSOR: + if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) { + g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path); + } else { + sensor_value = float3; + } + break; + } /* end switch */ + fclose(fp); + } + if (NULL != old_locale) { + setlocale(LC_NUMERIC, old_locale); + } + + return (gdouble)sensor_value; +} + +const gchar *sensors_applet_plugin_name(void) +{ + return plugin_name; +} + +GList *sensors_applet_plugin_init(void) +{ + return i2c_proc_plugin_init(); +} + +gdouble sensors_applet_plugin_get_sensor_value(const gchar *path, + const gchar *id, + SensorType type, + GError **error) { + return i2c_proc_plugin_get_sensor_value(path, id, type, error); +} |