[PATCH] I2C: New chip driver: sis5595

Greg KH
2005-03-04T21:23:53Z

ChangeSet 1.2099, 2005/03/02 12:17:12-08:00, aurelien@aurel32.net

[PATCH] I2C: New chip driver: sis5595

Please find below the new version of the patch against kernel
2.6.11-rc3-mm1 to add the sis5595 driver (sensor part).

As you suggested, I have changed the PCI part of the driver, taking the
via686a driver as an example. I have also changed the comparison of
jiffies by using time_after.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/i2c/chips/Kconfig | 12
drivers/i2c/chips/Makefile | 1
drivers/i2c/chips/sis5595.c | 794 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 807 insertions(+)

diff -Nru a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
--- a/drivers/i2c/chips/Kconfig 2005-03-04 12:24:36 -08:00
+++ b/drivers/i2c/chips/Kconfig 2005-03-04 12:24:36 -08:00
@@ -262,6 +262,18 @@
This driver can also be built as a module. If so, the module
will be called smsc47b397.

+config SENSORS_SIS5595
+ tristate "Silicon Integrated Systems Corp. SiS5595"
+ depends on I2C && PCI && EXPERIMENTAL
+ select I2C_SENSOR
+ select I2C_ISA
+ help
+ If you say yes here you get support for the integrated sensors in
+ SiS5595 South Bridges.
+
+ This driver can also be built as a module. If so, the module
+ will be called sis5595.
+
config SENSORS_SMSC47M1
tristate "SMSC LPC47M10x and compatibles"
depends on I2C && EXPERIMENTAL
diff -Nru a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
--- a/drivers/i2c/chips/Makefile 2005-03-04 12:24:36 -08:00
+++ b/drivers/i2c/chips/Makefile 2005-03-04 12:24:36 -08:00
@@ -32,6 +32,7 @@
obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
obj-$(CONFIG_SENSORS_RTC8564) += rtc8564.o
+obj-$(CONFIG_SENSORS_SIS5595) += sis5595.o
obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o
obj-$(CONFIG_SENSORS_VIA686A) += via686a.o
diff -Nru a/drivers/i2c/chips/sis5595.c b/drivers/i2c/chips/sis5595.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/i2c/chips/sis5595.c 2005-03-04 12:24:36 -08:00
@@ -0,0 +1,794 @@
+/*
+ sis5595.c - Part of lm_sensors, Linux kernel modules
+ for hardware monitoring
+
+ Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
+ Kyösti Mälkki <kmalkki@cc.hut.fi>, and
+ Mark D. Studebaker <mdsxyz123@yahoo.com>
+ Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
+ the help of Jean Delvare <khali@linux-fr.org>
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+ SiS southbridge has a LM78-like chip integrated on the same IC.
+ This driver is a customized copy of lm78.c
+
+ Supports following revisions:
+ Version PCI ID PCI Revision
+ 1 1039/0008 AF or less
+ 2 1039/0008 B0 or greater
+
+ Note: these chips contain a 0008 device which is incompatible with the
+ 5595. We recognize these by the presence of the listed
+ "blacklist" PCI ID and refuse to load.
+
+ NOT SUPPORTED PCI ID BLACKLIST PCI ID
+ 540 0008 0540
+ 550 0008 0550
+ 5513 0008 5511
+ 5581 0008 5597
+ 5582 0008 5597
+ 5597 0008 5597
+ 5598 0008 5597/5598
+ 630 0008 0630
+ 645 0008 0645
+ 730 0008 0730
+ 735 0008 0735
+*/
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <linux/init.h>
+#include <asm/io.h>
+
+
+/* If force_addr is set to anything different from 0, we forcibly enable
+ the device at the given address. */
+static u16 force_addr;
+module_param(force_addr, ushort, 0);
+MODULE_PARM_DESC(force_addr,
+ "Initialize the base address of the sensors");
+
+/* Addresses to scan.
+ Note that we can't determine the ISA address until we have initialized
+ our module */
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(sis5595);
+
+/* Many SIS5595 constants specified below */
+
+/* Length of ISA address segment */
+#define SIS5595_EXTENT 8
+/* PCI Config Registers */
+#define SIS5595_REVISION_REG 0x08
+#define SIS5595_BASE_REG 0x68
+#define SIS5595_PIN_REG 0x7A
+#define SIS5595_ENABLE_REG 0x7B
+
+/* Where are the ISA address/data registers relative to the base address */
+#define SIS5595_ADDR_REG_OFFSET 5
+#define SIS5595_DATA_REG_OFFSET 6
+
+/* The SIS5595 registers */
+#define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
+#define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
+#define SIS5595_REG_IN(nr) (0x20 + (nr))
+
+#define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
+#define SIS5595_REG_FAN(nr) (0x28 + (nr))
+
+/* On the first version of the chip, the temp registers are separate.
+ On the second version,
+ TEMP pin is shared with IN4, configured in PCI register 0x7A.
+ The registers are the same as well.
+ OVER and HYST are really MAX and MIN. */
+
+#define REV2MIN 0xb0
+#define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \
+ SIS5595_REG_IN(4) : 0x27
+#define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \
+ SIS5595_REG_IN_MAX(4) : 0x39
+#define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \
+ SIS5595_REG_IN_MIN(4) : 0x3a
+
+#define SIS5595_REG_CONFIG 0x40
+#define SIS5595_REG_ALARM1 0x41
+#define SIS5595_REG_ALARM2 0x42
+#define SIS5595_REG_FANDIV 0x47
+
+/* Conversions. Limit checking is only done on the TO_REG
+ variants. */
+
+/* IN: mV, (0V to 4.08V)
+ REG: 16mV/bit */
+static inline u8 IN_TO_REG(unsigned long val)
+{
+ unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
+ return (nval + 8) / 16;
+}
+#define IN_FROM_REG(val) ((val) * 16)
+
+static inline u8 FAN_TO_REG(long rpm, int div)
+{
+ if (rpm <= 0)
+ return 255;
+ return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
+}
+
+static inline int FAN_FROM_REG(u8 val, int div)
+{
+ return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
+}
+
+/* TEMP: mC (-54.12C to +157.53C)
+ REG: 0.83C/bit + 52.12, two's complement */
+static inline int TEMP_FROM_REG(s8 val)
+{
+ return val * 830 + 52120;
+}
+static inline s8 TEMP_TO_REG(int val)
+{
+ int nval = SENSORS_LIMIT(val, -54120, 157530) ;
+ return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
+}
+
+/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
+ REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
+static inline u8 DIV_TO_REG(int val)
+{
+ return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
+}
+#define DIV_FROM_REG(val) (1 << (val))
+
+/* For the SIS5595, we need to keep some data in memory. That
+ data is pointed to by sis5595_list[NR]->data. The structure itself is
+ dynamically allocated, at the time when the new sis5595 client is
+ allocated. */
+struct sis5595_data {
+ struct i2c_client client;
+ struct semaphore lock;
+
+ struct semaphore update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+ char maxins; /* == 3 if temp enabled, otherwise == 4 */
+ u8 revision; /* Reg. value */
+
+ u8 in[5]; /* Register value */
+ u8 in_max[5]; /* Register value */
+ u8 in_min[5]; /* Register value */
+ u8 fan[2]; /* Register value */
+ u8 fan_min[2]; /* Register value */
+ s8 temp; /* Register value */
+ s8 temp_over; /* Register value */
+ s8 temp_hyst; /* Register value */
+ u8 fan_div[2]; /* Register encoding, shifted right */
+ u16 alarms; /* Register encoding, combined */
+};
+
+static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
+
+static int sis5595_attach_adapter(struct i2c_adapter *adapter);
+static int sis5595_detect(struct i2c_adapter *adapter, int address, int kind);
+static int sis5595_detach_client(struct i2c_client *client);
+
+static int sis5595_read_value(struct i2c_client *client, u8 register);
+static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value);
+static struct sis5595_data *sis5595_update_device(struct device *dev);
+static void sis5595_init_client(struct i2c_client *client);
+
+static struct i2c_driver sis5595_driver = {
+ .owner = THIS_MODULE,
+ .name = "sis5595",
+ .id = I2C_DRIVERID_SIS5595,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = sis5595_attach_adapter,
+ .detach_client = sis5595_detach_client,
+};
+
+/* 4 Voltages */
+static ssize_t show_in(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
+}
+
+static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
+}
+
+static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
+}
+
+static ssize_t set_in_min(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ data->in_min[nr] = IN_TO_REG(val);
+ sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
+ return count;
+}
+
+static ssize_t set_in_max(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ data->in_max[nr] = IN_TO_REG(val);
+ sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
+ return count;
+}
+
+#define show_in_offset(offset) \
+static ssize_t \
+ show_in##offset (struct device *dev, char *buf) \
+{ \
+ return show_in(dev, buf, offset); \
+} \
+static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
+ show_in##offset, NULL); \
+static ssize_t \
+ show_in##offset##_min (struct device *dev, char *buf) \
+{ \
+ return show_in_min(dev, buf, offset); \
+} \
+static ssize_t \
+ show_in##offset##_max (struct device *dev, char *buf) \
+{ \
+ return show_in_max(dev, buf, offset); \
+} \
+static ssize_t set_in##offset##_min (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_in_min(dev, buf, count, offset); \
+} \
+static ssize_t set_in##offset##_max (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_in_max(dev, buf, count, offset); \
+} \
+static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+ show_in##offset##_min, set_in##offset##_min); \
+static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+ show_in##offset##_max, set_in##offset##_max);
+
+show_in_offset(0);
+show_in_offset(1);
+show_in_offset(2);
+show_in_offset(3);
+show_in_offset(4);
+
+/* Temperature */
+static ssize_t show_temp(struct device *dev, char *buf)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
+}
+
+static ssize_t show_temp_over(struct device *dev, char *buf)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
+}
+
+static ssize_t set_temp_over(struct device *dev, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ data->temp_over = TEMP_TO_REG(val);
+ sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over);
+ return count;
+}
+
+static ssize_t show_temp_hyst(struct device *dev, char *buf)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
+}
+
+static ssize_t set_temp_hyst(struct device *dev, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ data->temp_hyst = TEMP_TO_REG(val);
+ sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst);
+ return count;
+}
+
+static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
+static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
+ show_temp_over, set_temp_over);
+static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
+ show_temp_hyst, set_temp_hyst);
+
+/* 2 Fans */
+static ssize_t show_fan(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
+ DIV_FROM_REG(data->fan_div[nr])) );
+}
+
+static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
+ DIV_FROM_REG(data->fan_div[nr])) );
+}
+
+static ssize_t set_fan_min(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
+ sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
+ return count;
+}
+
+static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
+}
+
+/* Note: we save and restore the fan minimum here, because its value is
+ determined in part by the fan divisor. This follows the principle of
+ least suprise; the user doesn't expect the fan minimum to change just
+ because the divisor changed. */
+static ssize_t set_fan_div(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ unsigned long min = FAN_FROM_REG(data->fan_min[nr],
+ DIV_FROM_REG(data->fan_div[nr]));
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ int reg = sis5595_read_value(client, SIS5595_REG_FANDIV);
+ switch (val) {
+ case 1: data->fan_div[nr] = 0; break;
+ case 2: data->fan_div[nr] = 1; break;
+ case 4: data->fan_div[nr] = 2; break;
+ case 8: data->fan_div[nr] = 3; break;
+ default:
+ dev_err(&client->dev, "fan_div value %ld not "
+ "supported. Choose one of 1, 2, 4 or 8!\n", val);
+ return -EINVAL;
+ }
+
+ switch (nr) {
+ case 0:
+ reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
+ break;
+ case 1:
+ reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
+ break;
+ }
+ sis5595_write_value(client, SIS5595_REG_FANDIV, reg);
+ data->fan_min[nr] =
+ FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+ sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
+ return count;
+}
+
+#define show_fan_offset(offset) \
+static ssize_t show_fan_##offset (struct device *dev, char *buf) \
+{ \
+ return show_fan(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
+{ \
+ return show_fan_min(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
+{ \
+ return show_fan_div(dev, buf, offset - 1); \
+} \
+static ssize_t set_fan_##offset##_min (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_min(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
+static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_min, set_fan_##offset##_min);
+
+show_fan_offset(1);
+show_fan_offset(2);
+
+static ssize_t set_fan_1_div(struct device *dev, const char *buf,
+ size_t count)
+{
+ return set_fan_div(dev, buf, count, 0) ;
+}
+
+static ssize_t set_fan_2_div(struct device *dev, const char *buf,
+ size_t count)
+{
+ return set_fan_div(dev, buf, count, 1) ;
+}
+static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
+ show_fan_1_div, set_fan_1_div);
+static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+ show_fan_2_div, set_fan_2_div);
+
+/* Alarms */
+static ssize_t show_alarms(struct device *dev, char *buf)
+{
+ struct sis5595_data *data = sis5595_update_device(dev);
+ return sprintf(buf, "%d\n", data->alarms);
+}
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+
+/* This is called when the module is loaded */
+static int sis5595_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+ return i2c_detect(adapter, &addr_data, sis5595_detect);
+}
+
+int sis5595_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ int err = 0;
+ int i;
+ struct i2c_client *new_client;
+ struct sis5595_data *data;
+ char val;
+ u16 a;
+
+ /* Make sure we are probing the ISA bus!! */
+ if (!i2c_is_isa_adapter(adapter))
+ goto exit;
+
+ if (force_addr)
+ address = force_addr & ~(SIS5595_EXTENT - 1);
+ /* Reserve the ISA region */
+ if (!request_region(address, SIS5595_EXTENT, sis5595_driver.name)) {
+ err = -EBUSY;
+ goto exit;
+ }
+ if (force_addr) {
+ dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address);
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_write_config_word(s_bridge, SIS5595_BASE_REG, address))
+ goto exit_release;
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a))
+ goto exit_release;
+ if ((a & ~(SIS5595_EXTENT - 1)) != address)
+ /* doesn't work for some chips? */
+ goto exit_release;
+ }
+
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) {
+ goto exit_release;
+ }
+ if ((val & 0x80) == 0) {
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG,
+ val | 0x80))
+ goto exit_release;
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val))
+ goto exit_release;
+ if ((val & 0x80) == 0)
+ /* doesn't work for some chips! */
+ goto exit_release;
+ }
+
+ if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit_release;
+ }
+ memset(data, 0, sizeof(struct sis5595_data));
+
+ new_client = &data->client;
+ new_client->addr = address;
+ init_MUTEX(&data->lock);
+ i2c_set_clientdata(new_client, data);
+ new_client->adapter = adapter;
+ new_client->driver = &sis5595_driver;
+ new_client->flags = 0;
+
+ /* Check revision and pin registers to determine whether 4 or 5 voltages */
+ pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
+ /* 4 voltages, 1 temp */
+ data->maxins = 3;
+ if (data->revision >= REV2MIN) {
+ pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
+ if (!(val & 0x80))
+ /* 5 voltages, no temps */
+ data->maxins = 4;
+ }
+
+ /* Fill in the remaining client fields and put it into the global list */
+ strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE);
+
+ data->valid = 0;
+ init_MUTEX(&data->update_lock);
+
+ /* Tell the I2C layer a new client has arrived */
+ if ((err = i2c_attach_client(new_client)))
+ goto exit_free;
+
+ /* Initialize the SIS5595 chip */
+ sis5595_init_client(new_client);
+
+ /* A few vars need to be filled upon startup */
+ for (i = 0; i < 2; i++) {
+ data->fan_min[i] = sis5595_read_value(new_client,
+ SIS5595_REG_FAN_MIN(i));
+ }
+
+ /* Register sysfs hooks */
+ device_create_file(&new_client->dev, &dev_attr_in0_input);
+ device_create_file(&new_client->dev, &dev_attr_in0_min);
+ device_create_file(&new_client->dev, &dev_attr_in0_max);
+ device_create_file(&new_client->dev, &dev_attr_in1_input);
+ device_create_file(&new_client->dev, &dev_attr_in1_min);
+ device_create_file(&new_client->dev, &dev_attr_in1_max);
+ device_create_file(&new_client->dev, &dev_attr_in2_input);
+ device_create_file(&new_client->dev, &dev_attr_in2_min);
+ device_create_file(&new_client->dev, &dev_attr_in2_max);
+ device_create_file(&new_client->dev, &dev_attr_in3_input);
+ device_create_file(&new_client->dev, &dev_attr_in3_min);
+ device_create_file(&new_client->dev, &dev_attr_in3_max);
+ if (data->maxins == 4) {
+ device_create_file(&new_client->dev, &dev_attr_in4_input);
+ device_create_file(&new_client->dev, &dev_attr_in4_min);
+ device_create_file(&new_client->dev, &dev_attr_in4_max);
+ }
+ device_create_file(&new_client->dev, &dev_attr_fan1_input);
+ device_create_file(&new_client->dev, &dev_attr_fan1_min);
+ device_create_file(&new_client->dev, &dev_attr_fan1_div);
+ device_create_file(&new_client->dev, &dev_attr_fan2_input);
+ device_create_file(&new_client->dev, &dev_attr_fan2_min);
+ device_create_file(&new_client->dev, &dev_attr_fan2_div);
+ device_create_file(&new_client->dev, &dev_attr_alarms);
+ if (data->maxins == 3) {
+ device_create_file(&new_client->dev, &dev_attr_temp1_input);
+ device_create_file(&new_client->dev, &dev_attr_temp1_max);
+ device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
+ }
+ return 0;
+
+exit_free:
+ kfree(data);
+exit_release:
+ release_region(address, SIS5595_EXTENT);
+exit:
+ return err;
+}
+
+static int sis5595_detach_client(struct i2c_client *client)
+{
+ int err;
+
+ if ((err = i2c_detach_client(client))) {
+ dev_err(&client->dev,
+ "Client deregistration failed, client not detached.\n");
+ return err;
+ }
+
+ if (i2c_is_isa_client(client))
+ release_region(client->addr, SIS5595_EXTENT);
+
+ kfree(i2c_get_clientdata(client));
+
+ return 0;
+}
+
+
+/* ISA access must be locked explicitly. */
+static int sis5595_read_value(struct i2c_client *client, u8 reg)
+{
+ int res;
+
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ down(&data->lock);
+ outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
+ res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET);
+ up(&data->lock);
+ return res;
+}
+
+static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ down(&data->lock);
+ outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
+ outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET);
+ up(&data->lock);
+ return 0;
+}
+
+/* Called when we have found a new SIS5595. */
+static void sis5595_init_client(struct i2c_client *client)
+{
+ u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG);
+ if (!(config & 0x01))
+ sis5595_write_value(client, SIS5595_REG_CONFIG,
+ (config & 0xf7) | 0x01);
+}
+
+static struct sis5595_data *sis5595_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct sis5595_data *data = i2c_get_clientdata(client);
+ int i;
+
+ down(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+ || !data->valid) {
+
+ for (i = 0; i <= data->maxins; i++) {
+ data->in[i] =
+ sis5595_read_value(client, SIS5595_REG_IN(i));
+ data->in_min[i] =
+ sis5595_read_value(client,
+ SIS5595_REG_IN_MIN(i));
+ data->in_max[i] =
+ sis5595_read_value(client,
+ SIS5595_REG_IN_MAX(i));
+ }
+ for (i = 0; i < 2; i++) {
+ data->fan[i] =
+ sis5595_read_value(client, SIS5595_REG_FAN(i));
+ data->fan_min[i] =
+ sis5595_read_value(client,
+ SIS5595_REG_FAN_MIN(i));
+ }
+ if (data->maxins == 3) {
+ data->temp =
+ sis5595_read_value(client, SIS5595_REG_TEMP);
+ data->temp_over =
+ sis5595_read_value(client, SIS5595_REG_TEMP_OVER);
+ data->temp_hyst =
+ sis5595_read_value(client, SIS5595_REG_TEMP_HYST);
+ }
+ i = sis5595_read_value(client, SIS5595_REG_FANDIV);
+ data->fan_div[0] = (i >> 4) & 0x03;
+ data->fan_div[1] = i >> 6;
+ data->alarms =
+ sis5595_read_value(client, SIS5595_REG_ALARM1) |
+ (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8);
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+
+ return data;
+}
+
+static struct pci_device_id sis5595_pci_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
+
+static int blacklist[] __devinitdata = {
+ PCI_DEVICE_ID_SI_540,
+ PCI_DEVICE_ID_SI_550,
+ PCI_DEVICE_ID_SI_630,
+ PCI_DEVICE_ID_SI_645,
+ PCI_DEVICE_ID_SI_730,
+ PCI_DEVICE_ID_SI_735,
+ PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
+ that ID shows up in other chips so we
+ use the 5511 ID for recognition */
+ PCI_DEVICE_ID_SI_5597,
+ PCI_DEVICE_ID_SI_5598,
+ 0 };
+
+static int __devinit sis5595_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ u16 val;
+ int *i;
+ int addr = 0;
+
+ for (i = blacklist; *i != 0; i++) {
+ struct pci_dev *dev;
+ dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
+ if (dev) {
+ dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i);
+ pci_dev_put(dev);
+ return -ENODEV;
+ }
+ }
+
+ if (PCIBIOS_SUCCESSFUL !=
+ pci_read_config_word(dev, SIS5595_BASE_REG, &val))
+ return -ENODEV;
+
+ addr = val & ~(SIS5595_EXTENT - 1);
+ if (addr == 0 && force_addr == 0) {
+ dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
+ return -ENODEV;
+ }
+ if (force_addr)
+ addr = force_addr; /* so detect will get called */
+
+ if (!addr) {
+ dev_err(&dev->dev,"No SiS 5595 sensors found.\n");
+ return -ENODEV;
+ }
+ normal_isa[0] = addr;
+
+ s_bridge = pci_dev_get(dev);
+ if (i2c_add_driver(&sis5595_driver)) {
+ pci_dev_put(s_bridge);
+ s_bridge = NULL;
+ }
+
+ /* Always return failure here. This is to allow other drivers to bind
+ * to this pci device. We don't really want to have control over the
+ * pci device, we only wanted to read as few register values from it.
+ */
+ return -ENODEV;
+}
+
+static struct pci_driver sis5595_pci_driver = {
+ .name = "sis5595",
+ .id_table = sis5595_pci_ids,
+ .probe = sis5595_pci_probe,
+};
+
+static int __init sm_sis5595_init(void)
+{
+ return pci_register_driver(&sis5595_pci_driver);
+}
+
+static void __exit sm_sis5595_exit(void)
+{
+ pci_unregister_driver(&sis5595_pci_driver);
+ if (s_bridge != NULL) {
+ i2c_del_driver(&sis5595_driver);
+ pci_dev_put(s_bridge);
+ s_bridge = NULL;
+ }
+}
+
+MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
+MODULE_DESCRIPTION("SiS 5595 Sensor device");
+MODULE_LICENSE("GPL");
+
+module_init(sm_sis5595_init);
+module_exit(sm_sis5595_exit);