340 lines
10 KiB
Diff
340 lines
10 KiB
Diff
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--- a/drivers/hwmon/Kconfig
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+++ b/drivers/hwmon/Kconfig
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@@ -434,6 +434,15 @@ config SENSORS_GL520SM
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This driver can also be built as a module. If so, the module
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will be called gl520sm.
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+config SENSORS_GSC
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+ tristate "Gateworks System Controller"
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+ depends on I2C && (ARCH_DAVINCI || ARCH_CNS3XXX || ARCH_IXP4XX)
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+ help
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+ If you say yes here you get support for the Gateworks System Controller.
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+
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+ This driver can also be built as a module. If so, the module
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+ will be called gsc.
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+
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config SENSORS_GPIO_FAN
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tristate "GPIO fan"
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depends on GPIOLIB
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--- a/drivers/hwmon/Makefile
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+++ b/drivers/hwmon/Makefile
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@@ -130,6 +130,7 @@ obj-$(CONFIG_SENSORS_W83L785TS) += w83l7
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obj-$(CONFIG_SENSORS_W83L786NG) += w83l786ng.o
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obj-$(CONFIG_SENSORS_WM831X) += wm831x-hwmon.o
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obj-$(CONFIG_SENSORS_WM8350) += wm8350-hwmon.o
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+obj-$(CONFIG_SENSORS_GSC) += gsc.o
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obj-$(CONFIG_PMBUS) += pmbus/
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--- /dev/null
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+++ b/drivers/hwmon/gsc.c
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@@ -0,0 +1,308 @@
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+/*
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+ * A hwmon driver for the Gateworks System Controller
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+ * Copyright (C) 2009 Gateworks Corporation
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+ *
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+ * Author: Chris Lang <clang@gateworks.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License,
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+ * as published by the Free Software Foundation - version 2.
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/i2c.h>
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+#include <linux/hwmon.h>
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+#include <linux/hwmon-sysfs.h>
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+#include <linux/err.h>
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+#include <linux/slab.h>
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+
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+#define DRV_VERSION "0.2"
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+
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+enum chips { gsp };
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+
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+/* AD7418 registers */
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+#define GSP_REG_TEMP_IN 0x00
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+#define GSP_REG_VIN 0x02
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+#define GSP_REG_3P3 0x05
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+#define GSP_REG_BAT 0x08
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+#define GSP_REG_5P0 0x0b
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+#define GSP_REG_CORE 0x0e
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+#define GSP_REG_CPU1 0x11
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+#define GSP_REG_CPU2 0x14
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+#define GSP_REG_DRAM 0x17
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+#define GSP_REG_EXT_BAT 0x1a
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+#define GSP_REG_IO1 0x1d
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+#define GSP_REG_IO2 0x20
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+#define GSP_REG_PCIE 0x23
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+#define GSP_REG_CURRENT 0x26
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+#define GSP_FAN_0 0x2C
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+#define GSP_FAN_1 0x2E
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+#define GSP_FAN_2 0x30
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+#define GSP_FAN_3 0x32
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+#define GSP_FAN_4 0x34
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+#define GSP_FAN_5 0x36
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+
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+struct gsp_sensor_info {
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+ const char* name;
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+ int reg;
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+};
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+
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+static const struct gsp_sensor_info gsp_sensors[] = {
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+ {"temp", GSP_REG_TEMP_IN},
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+ {"vin", GSP_REG_VIN},
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+ {"3p3", GSP_REG_3P3},
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+ {"bat", GSP_REG_BAT},
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+ {"5p0", GSP_REG_5P0},
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+ {"core", GSP_REG_CORE},
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+ {"cpu1", GSP_REG_CPU1},
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+ {"cpu2", GSP_REG_CPU2},
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+ {"dram", GSP_REG_DRAM},
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+ {"ext_bat", GSP_REG_EXT_BAT},
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+ {"io1", GSP_REG_IO1},
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+ {"io2", GSP_REG_IO2},
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+ {"pci2", GSP_REG_PCIE},
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+ {"current", GSP_REG_CURRENT},
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+ {"fan_point0", GSP_FAN_0},
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+ {"fan_point1", GSP_FAN_1},
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+ {"fan_point2", GSP_FAN_2},
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+ {"fan_point3", GSP_FAN_3},
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+ {"fan_point4", GSP_FAN_4},
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+ {"fan_point5", GSP_FAN_5},
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+};
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+
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+struct gsp_data {
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+ struct device *hwmon_dev;
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+ struct attribute_group attrs;
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+ enum chips type;
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+};
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+
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+static int gsp_probe(struct i2c_client *client,
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+ const struct i2c_device_id *id);
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+static int gsp_remove(struct i2c_client *client);
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+
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+static const struct i2c_device_id gsp_id[] = {
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+ { "gsp", 0 },
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+ { }
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+};
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+MODULE_DEVICE_TABLE(i2c, gsp_id);
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+
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+static struct i2c_driver gsp_driver = {
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+ .driver = {
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+ .name = "gsp",
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+ },
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+ .probe = gsp_probe,
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+ .remove = gsp_remove,
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+ .id_table = gsp_id,
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+};
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+
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+/* All registers are word-sized, except for the configuration registers.
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+ * AD7418 uses a high-byte first convention. Do NOT use those functions to
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+ * access the configuration registers CONF and CONF2, as they are byte-sized.
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+ */
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+static inline int gsp_read(struct i2c_client *client, u8 reg)
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+{
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+ unsigned int adc = 0;
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+ if (reg == GSP_REG_TEMP_IN || reg > GSP_REG_CURRENT)
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+ {
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+ adc |= i2c_smbus_read_byte_data(client, reg);
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+ adc |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
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+ return adc;
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+ }
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+ else
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+ {
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+ adc |= i2c_smbus_read_byte_data(client, reg);
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+ adc |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
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+ adc |= i2c_smbus_read_byte_data(client, reg + 2) << 16;
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+ return adc;
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+ }
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+}
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+
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+static inline int gsp_write(struct i2c_client *client, u8 reg, u16 value)
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+{
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+ i2c_smbus_write_byte_data(client, reg, value & 0xff);
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+ i2c_smbus_write_byte_data(client, reg + 1, ((value >> 8) & 0xff));
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+ return 1;
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+}
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+
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+static ssize_t show_adc(struct device *dev, struct device_attribute *devattr,
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+ char *buf)
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+{
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+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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+ struct i2c_client *client = to_i2c_client(dev);
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+ return sprintf(buf, "%d\n", gsp_read(client, gsp_sensors[attr->index].reg));
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+}
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+
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+static ssize_t show_label(struct device *dev,
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+ struct device_attribute *devattr, char *buf)
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+{
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+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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+
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+ return sprintf(buf, "%s\n", gsp_sensors[attr->index].name);
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+}
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+
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+static ssize_t store_fan(struct device *dev,
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+ struct device_attribute *devattr, const char *buf, size_t count)
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+{
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+ u16 val;
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+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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+ struct i2c_client *client = to_i2c_client(dev);
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+ val = simple_strtoul(buf, NULL, 10);
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+ gsp_write(client, gsp_sensors[attr->index].reg, val);
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+ return count;
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+}
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+
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+static SENSOR_DEVICE_ATTR(temp0_input, S_IRUGO, show_adc, NULL, 0);
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+static SENSOR_DEVICE_ATTR(temp0_label, S_IRUGO, show_label, NULL, 0);
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+
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+static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_adc, NULL, 1);
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+static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_label, NULL, 1);
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+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_adc, NULL, 2);
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+static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_label, NULL, 2);
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+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_adc, NULL, 3);
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+static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_label, NULL, 3);
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+static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_adc, NULL, 4);
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+static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 4);
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+static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_adc, NULL, 5);
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+static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_label, NULL, 5);
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+static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_adc, NULL, 6);
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+static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_label, NULL, 6);
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+static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_adc, NULL, 7);
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+static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_label, NULL, 7);
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+static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_adc, NULL, 8);
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+static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 8);
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+static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_adc, NULL, 9);
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+static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 9);
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+static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_adc, NULL, 10);
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+static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 10);
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+static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_adc, NULL, 11);
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+static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_label, NULL, 11);
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+static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_adc, NULL, 12);
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+static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_label, NULL, 12);
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+static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_adc, NULL, 13);
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+static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_label, NULL, 13);
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+
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+static SENSOR_DEVICE_ATTR(fan0_point0, S_IRUGO | S_IWUSR, show_adc, store_fan, 14);
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+static SENSOR_DEVICE_ATTR(fan0_point1, S_IRUGO | S_IWUSR, show_adc, store_fan, 15);
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+static SENSOR_DEVICE_ATTR(fan0_point2, S_IRUGO | S_IWUSR, show_adc, store_fan, 16);
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+static SENSOR_DEVICE_ATTR(fan0_point3, S_IRUGO | S_IWUSR, show_adc, store_fan, 17);
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+static SENSOR_DEVICE_ATTR(fan0_point4, S_IRUGO | S_IWUSR, show_adc, store_fan, 18);
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+static SENSOR_DEVICE_ATTR(fan0_point5, S_IRUGO | S_IWUSR, show_adc, store_fan, 19);
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+
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+static struct attribute *gsp_attributes[] = {
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+ &sensor_dev_attr_temp0_input.dev_attr.attr,
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+ &sensor_dev_attr_in0_input.dev_attr.attr,
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+ &sensor_dev_attr_in1_input.dev_attr.attr,
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+ &sensor_dev_attr_in2_input.dev_attr.attr,
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+ &sensor_dev_attr_in3_input.dev_attr.attr,
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+ &sensor_dev_attr_in4_input.dev_attr.attr,
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+ &sensor_dev_attr_in5_input.dev_attr.attr,
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+ &sensor_dev_attr_in6_input.dev_attr.attr,
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+ &sensor_dev_attr_in7_input.dev_attr.attr,
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+ &sensor_dev_attr_in8_input.dev_attr.attr,
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+ &sensor_dev_attr_in9_input.dev_attr.attr,
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+ &sensor_dev_attr_in10_input.dev_attr.attr,
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+ &sensor_dev_attr_in11_input.dev_attr.attr,
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+ &sensor_dev_attr_in12_input.dev_attr.attr,
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+
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+ &sensor_dev_attr_temp0_label.dev_attr.attr,
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+ &sensor_dev_attr_in0_label.dev_attr.attr,
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+ &sensor_dev_attr_in1_label.dev_attr.attr,
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+ &sensor_dev_attr_in2_label.dev_attr.attr,
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+ &sensor_dev_attr_in3_label.dev_attr.attr,
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+ &sensor_dev_attr_in4_label.dev_attr.attr,
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+ &sensor_dev_attr_in5_label.dev_attr.attr,
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+ &sensor_dev_attr_in6_label.dev_attr.attr,
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+ &sensor_dev_attr_in7_label.dev_attr.attr,
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+ &sensor_dev_attr_in8_label.dev_attr.attr,
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+ &sensor_dev_attr_in9_label.dev_attr.attr,
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+ &sensor_dev_attr_in10_label.dev_attr.attr,
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+ &sensor_dev_attr_in11_label.dev_attr.attr,
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+ &sensor_dev_attr_in12_label.dev_attr.attr,
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+
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+ &sensor_dev_attr_fan0_point0.dev_attr.attr,
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+ &sensor_dev_attr_fan0_point1.dev_attr.attr,
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+ &sensor_dev_attr_fan0_point2.dev_attr.attr,
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+ &sensor_dev_attr_fan0_point3.dev_attr.attr,
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+ &sensor_dev_attr_fan0_point4.dev_attr.attr,
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+ &sensor_dev_attr_fan0_point5.dev_attr.attr,
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+ NULL
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+};
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+
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+
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+static int gsp_probe(struct i2c_client *client,
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+ const struct i2c_device_id *id)
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+{
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+ struct i2c_adapter *adapter = client->adapter;
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+ struct gsp_data *data;
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+ int err;
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+
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+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
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+ I2C_FUNC_SMBUS_WORD_DATA)) {
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+ err = -EOPNOTSUPP;
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+ goto exit;
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+ }
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+
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+ if (!(data = kzalloc(sizeof(struct gsp_data), GFP_KERNEL))) {
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+ err = -ENOMEM;
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+ goto exit;
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+ }
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+
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+ i2c_set_clientdata(client, data);
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+
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+ data->type = id->driver_data;
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+
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+ switch (data->type) {
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+ case 0:
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+ data->attrs.attrs = gsp_attributes;
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+ break;
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+ }
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+
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+ dev_info(&client->dev, "%s chip found\n", client->name);
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+
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+ /* Register sysfs hooks */
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+ if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
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+ goto exit_free;
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+
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+ data->hwmon_dev = hwmon_device_register(&client->dev);
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|
|
+ if (IS_ERR(data->hwmon_dev)) {
|
||
|
|
+ err = PTR_ERR(data->hwmon_dev);
|
||
|
|
+ goto exit_remove;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ return 0;
|
||
|
|
+
|
||
|
|
+exit_remove:
|
||
|
|
+ sysfs_remove_group(&client->dev.kobj, &data->attrs);
|
||
|
|
+exit_free:
|
||
|
|
+ kfree(data);
|
||
|
|
+exit:
|
||
|
|
+ return err;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static int gsp_remove(struct i2c_client *client)
|
||
|
|
+{
|
||
|
|
+ struct gsp_data *data = i2c_get_clientdata(client);
|
||
|
|
+ hwmon_device_unregister(data->hwmon_dev);
|
||
|
|
+ sysfs_remove_group(&client->dev.kobj, &data->attrs);
|
||
|
|
+ kfree(data);
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static int __init gsp_init(void)
|
||
|
|
+{
|
||
|
|
+ return i2c_add_driver(&gsp_driver);
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static void __exit gsp_exit(void)
|
||
|
|
+{
|
||
|
|
+ i2c_del_driver(&gsp_driver);
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+module_init(gsp_init);
|
||
|
|
+module_exit(gsp_exit);
|
||
|
|
+
|
||
|
|
+MODULE_AUTHOR("Chris Lang <clang@gateworks.com>");
|
||
|
|
+MODULE_DESCRIPTION("GSC HWMON driver");
|
||
|
|
+MODULE_LICENSE("GPL");
|
||
|
|
+MODULE_VERSION(DRV_VERSION);
|
||
|
|
+
|