Parent repository is bk://kernel.bkbits.net/gregkh/linux/i2c-2.6
======== ChangeSet 1.1577 ========
D 1.1577 04/02/19 23:04:28-08:00 akpm@mnm.(none) 37130 37129 0/0/1
P ChangeSet
C Merge mnm.(none):/usr/src/bk25 into mnm.(none):/usr/src/bk-i2c
------------------------------------------------
diff -Nru a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
--- a/drivers/i2c/Kconfig Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/Kconfig Thu Feb 19 23:07:18 2004
@@ -15,9 +15,6 @@
Both I2C and SMBus are supported here. You will need this for
hardware sensors support, and also for Video For Linux support.
- Specifically, if you want to use a BT848 based frame grabber/overlay
- boards under Linux, say Y here and also to "I2C bit-banging
- interfaces", below.
If you want I2C support, you should say Y here and also to the
specific driver for your bus adapter(s) below.
diff -Nru a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
--- a/drivers/i2c/busses/Kconfig Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/busses/Kconfig Thu Feb 19 23:07:18 2004
@@ -144,6 +144,17 @@
This support is also available as a module. If so, the module
will be called i2c-ite.
+config I2C_IXP42X
+ tristate "IXP42x GPIO-Based I2C Interface"
+ depends on I2C && ARCH_IXP425
+ select I2C_ALGOBIT
+ help
+ Say Y here if you have an Intel IXP42x(420,421,422,425) based
+ system and are using GPIO lines for an I2C bus.
+
+ This support is also available as a module. If so, the module
+ will be called i2c-ixp42x.
+
config I2C_KEYWEST
tristate "Powermac Keywest I2C interface"
depends on I2C && PPC_PMAC
diff -Nru a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
--- a/drivers/i2c/busses/Makefile Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/busses/Makefile Thu Feb 19 23:07:18 2004
@@ -15,6 +15,7 @@
obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
obj-$(CONFIG_I2C_ISA) += i2c-isa.o
obj-$(CONFIG_I2C_ITE) += i2c-ite.o
+obj-$(CONFIG_I2C_IXP42X) += i2c-ixp42x.o
obj-$(CONFIG_I2C_KEYWEST) += i2c-keywest.o
obj-$(CONFIG_I2C_NFORCE2) += i2c-nforce2.o
obj-$(CONFIG_I2C_PHILIPSPAR) += i2c-philips-par.o
diff -Nru a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
--- a/drivers/i2c/busses/i2c-ali1535.c Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/busses/i2c-ali1535.c Thu Feb 19 23:07:18 2004
@@ -517,6 +517,7 @@
static void __devexit ali1535_remove(struct pci_dev *dev)
{
i2c_del_adapter(&ali1535_adapter);
+ release_region(ali1535_smba, ALI1535_SMB_IOSIZE);
}
static struct pci_driver ali1535_driver = {
@@ -534,7 +535,6 @@
static void __exit i2c_ali1535_exit(void)
{
pci_unregister_driver(&ali1535_driver);
- release_region(ali1535_smba, ALI1535_SMB_IOSIZE);
}
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
diff -Nru a/drivers/i2c/busses/i2c-ixp42x.c b/drivers/i2c/busses/i2c-ixp42x.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/i2c/busses/i2c-ixp42x.c Thu Feb 19 23:07:18 2004
@@ -0,0 +1,180 @@
+/*
+ * drivers/i2c/i2c-adap-ixp42x.c
+ *
+ * Intel's IXP42x XScale NPU chipsets (IXP420, 421, 422, 425) do not have
+ * an on board I2C controller but provide 16 GPIO pins that are often
+ * used to create an I2C bus. This driver provides an i2c_adapter
+ * interface that plugs in under algo_bit and drives the GPIO pins
+ * as instructed by the alogorithm driver.
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (c) 2003-2004 MontaVista Software Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * NOTE: Since different platforms will use different GPIO pins for
+ * I2C, this driver uses an IXP42x-specific platform_data
+ * pointer to pass the GPIO numbers to the driver. This
+ * allows us to support all the different IXP42x platforms
+ * w/o having to put #ifdefs in this driver.
+ *
+ * See arch/arm/mach-ixp42x/ixdp425.c for an example of building a
+ * device list and filling in the ixp42x_i2c_pins data structure
+ * that is passed as the platform_data to this driver.
+ */
+
+#include <linux/config.h>
+#ifdef CONFIG_I2C_DEBUG_BUS
+#define DEBUG 1
+#endif
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+
+#include <asm/hardware.h> /* Pick up IXP42x-specific bits */
+
+static inline int ixp42x_scl_pin(void *data)
+{
+ return ((struct ixp42x_i2c_pins*)data)->scl_pin;
+}
+
+static inline int ixp42x_sda_pin(void *data)
+{
+ return ((struct ixp42x_i2c_pins*)data)->sda_pin;
+}
+
+static void ixp42x_bit_setscl(void *data, int val)
+{
+ gpio_line_set(ixp42x_scl_pin(data), 0);
+ gpio_line_config(ixp42x_scl_pin(data),
+ val ? IXP425_GPIO_IN : IXP425_GPIO_OUT );
+}
+
+static void ixp42x_bit_setsda(void *data, int val)
+{
+ gpio_line_set(ixp42x_sda_pin(data), 0);
+ gpio_line_config(ixp42x_sda_pin(data),
+ val ? IXP425_GPIO_IN : IXP425_GPIO_OUT );
+}
+
+static int ixp42x_bit_getscl(void *data)
+{
+ int scl;
+
+ gpio_line_config(ixp42x_scl_pin(data), IXP425_GPIO_IN );
+ gpio_line_get(ixp42x_scl_pin(data), &scl);
+
+ return scl;
+}
+
+static int ixp42x_bit_getsda(void *data)
+{
+ int sda;
+
+ gpio_line_config(ixp42x_sda_pin(data), IXP425_GPIO_IN );
+ gpio_line_get(ixp42x_sda_pin(data), &sda);
+
+ return sda;
+}
+
+struct ixp42x_i2c_data {
+ struct ixp42x_i2c_pins *gpio_pins;
+ struct i2c_adapter adapter;
+ struct i2c_algo_bit_data algo_data;
+};
+
+static int ixp42x_i2c_remove(struct device *dev)
+{
+ struct platform_device *plat_dev = to_platform_device(dev);
+ struct ixp42x_i2c_data *drv_data = dev_get_drvdata(&plat_dev->dev);
+
+ dev_set_drvdata(&plat_dev->dev, NULL);
+
+ i2c_bit_del_bus(&drv_data->adapter);
+
+ kfree(drv_data);
+
+ return 0;
+}
+
+static int ixp42x_i2c_probe(struct device *dev)
+{
+ int err;
+ struct platform_device *plat_dev = to_platform_device(dev);
+ struct ixp42x_i2c_pins *gpio = plat_dev->dev.platform_data;
+ struct ixp42x_i2c_data *drv_data =
+ kmalloc(sizeof(struct ixp42x_i2c_data), GFP_KERNEL);
+
+ if(!drv_data)
+ return -ENOMEM;
+
+ memzero(drv_data, sizeof(struct ixp42x_i2c_data));
+ drv_data->gpio_pins = gpio;
+
+ /*
+ * We could make a lot of these structures static, but
+ * certain platforms may have multiple GPIO-based I2C
+ * buses for various device domains, so we need per-device
+ * algo_data->data.
+ */
+ drv_data->algo_data.data = gpio;
+ drv_data->algo_data.setsda = ixp42x_bit_setsda;
+ drv_data->algo_data.setscl = ixp42x_bit_setscl;
+ drv_data->algo_data.getsda = ixp42x_bit_getsda;
+ drv_data->algo_data.getscl = ixp42x_bit_getscl;
+ drv_data->algo_data.udelay = 10;
+ drv_data->algo_data.mdelay = 10;
+ drv_data->algo_data.timeout = 100;
+
+ drv_data->adapter.id = I2C_HW_B_IXP425,
+ drv_data->adapter.algo_data = &drv_data->algo_data,
+
+ drv_data->adapter.dev.parent = &plat_dev->dev;
+
+ gpio_line_config(gpio->scl_pin, IXP425_GPIO_IN);
+ gpio_line_config(gpio->sda_pin, IXP425_GPIO_IN);
+ gpio_line_set(gpio->scl_pin, 0);
+ gpio_line_set(gpio->sda_pin, 0);
+
+ if ((err = i2c_bit_add_bus(&drv_data->adapter) != 0)) {
+ printk(KERN_ERR "ERROR: Could not install %s\n", dev->bus_id);
+
+ kfree(drv_data);
+ return err;
+ }
+
+ dev_set_drvdata(&plat_dev->dev, drv_data);
+
+ return 0;
+}
+
+static struct device_driver ixp42x_i2c_driver = {
+ .name = "IXP42X-I2C",
+ .bus = &platform_bus_type,
+ .probe = ixp42x_i2c_probe,
+ .remove = ixp42x_i2c_remove,
+};
+
+static int __init ixp42x_i2c_init(void)
+{
+ return driver_register(&ixp42x_i2c_driver);
+}
+
+static void __exit ixp42x_i2c_exit(void)
+{
+ driver_unregister(&ixp42x_i2c_driver);
+}
+
+module_init(ixp42x_i2c_init);
+module_exit(ixp42x_i2c_exit);
+
+MODULE_DESCRIPTION("GPIO-based I2C driver for IXP42x systems");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
+
diff -Nru a/drivers/i2c/busses/i2c-voodoo3.c b/drivers/i2c/busses/i2c-voodoo3.c
--- a/drivers/i2c/busses/i2c-voodoo3.c Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/busses/i2c-voodoo3.c Thu Feb 19 23:07:18 2004
@@ -171,6 +171,7 @@
static struct i2c_adapter voodoo3_i2c_adapter = {
.owner = THIS_MODULE,
+ .class = I2C_ADAP_CLASS_TV_ANALOG,
.name = "I2C Voodoo3/Banshee adapter",
.algo_data = &voo_i2c_bit_data,
};
@@ -187,6 +188,7 @@
static struct i2c_adapter voodoo3_ddc_adapter = {
.owner = THIS_MODULE,
+ .class = I2C_ADAP_CLASS_DDC,
.name = "DDC Voodoo3/Banshee adapter",
.algo_data = &voo_ddc_bit_data,
};
diff -Nru a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
--- a/drivers/i2c/chips/Kconfig Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/chips/Kconfig Thu Feb 19 23:07:18 2004
@@ -102,6 +102,17 @@
This driver can also be built as a module. If so, the module
will be called lm78.
+config SENSORS_LM80
+ tristate "National Semiconductor LM80"
+ depends on I2C && EXPERIMENTAL
+ select I2C_SENSOR
+ help
+ If you say yes here you get support for National Semiconductor
+ LM80 sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called lm80.
+
config SENSORS_LM83
tristate "National Semiconductor LM83"
depends on I2C && EXPERIMENTAL
diff -Nru a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
--- a/drivers/i2c/chips/Makefile Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/chips/Makefile Thu Feb 19 23:07:18 2004
@@ -13,6 +13,7 @@
obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_LM75) += lm75.o
obj-$(CONFIG_SENSORS_LM78) += lm78.o
+obj-$(CONFIG_SENSORS_LM80) += lm80.o
obj-$(CONFIG_SENSORS_LM83) += lm83.o
obj-$(CONFIG_SENSORS_LM85) += lm85.o
obj-$(CONFIG_SENSORS_LM90) += lm90.o
diff -Nru a/drivers/i2c/chips/fscher.c b/drivers/i2c/chips/fscher.c
--- a/drivers/i2c/chips/fscher.c Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/chips/fscher.c Thu Feb 19 23:07:18 2004
@@ -26,6 +26,11 @@
* and Philip Edelbrock <phil@netroedge.com>
*/
+#include <linux/config.h>
+#ifdef CONFIG_I2C_DEBUG_CHIP
+#define DEBUG 1
+#endif
+
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
diff -Nru a/drivers/i2c/chips/lm80.c b/drivers/i2c/chips/lm80.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/i2c/chips/lm80.c Thu Feb 19 23:07:18 2004
@@ -0,0 +1,567 @@
+/*
+ * lm80.c - From lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
+ * and Philip Edelbrock <phil@netroedge.com>
+ *
+ * Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.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.
+ */
+
+#include <linux/config.h>
+#ifdef CONFIG_I2C_DEBUG_CHIP
+#define DEBUG 1
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static unsigned short normal_i2c_range[] = { 0x28, 0x2f, I2C_CLIENT_END };
+static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+static unsigned int normal_isa_range[] = { I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(lm80);
+
+/* Many LM80 constants specified below */
+
+/* The LM80 registers */
+#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
+#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
+#define LM80_REG_IN(nr) (0x20 + (nr))
+
+#define LM80_REG_FAN1_MIN 0x3c
+#define LM80_REG_FAN2_MIN 0x3d
+#define LM80_REG_FAN1 0x28
+#define LM80_REG_FAN2 0x29
+
+#define LM80_REG_TEMP 0x27
+#define LM80_REG_TEMP_HOT_MAX 0x38
+#define LM80_REG_TEMP_HOT_HYST 0x39
+#define LM80_REG_TEMP_OS_MAX 0x3a
+#define LM80_REG_TEMP_OS_HYST 0x3b
+
+#define LM80_REG_CONFIG 0x00
+#define LM80_REG_ALARM1 0x01
+#define LM80_REG_ALARM2 0x02
+#define LM80_REG_MASK1 0x03
+#define LM80_REG_MASK2 0x04
+#define LM80_REG_FANDIV 0x05
+#define LM80_REG_RES 0x06
+
+
+/* Conversions. Rounding and limit checking is only done on the TO_REG
+ variants. Note that you should be a bit careful with which arguments
+ these macros are called: arguments may be evaluated more than once.
+ Fixing this is just not worth it. */
+
+#define IN_TO_REG(val) (SENSORS_LIMIT((val)/10,0,255))
+#define IN_FROM_REG(val) ((val)*10)
+
+static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
+{
+ if (rpm == 0)
+ return 255;
+ rpm = SENSORS_LIMIT(rpm, 1, 1000000);
+ return SENSORS_LIMIT((1350000 + rpm*div / 2) / (rpm*div), 1, 254);
+}
+
+#define FAN_FROM_REG(val,div) ((val)==0?-1:\
+ (val)==255?0:1350000/((div)*(val)))
+
+static inline long TEMP_FROM_REG(u16 temp)
+{
+ long res;
+
+ temp >>= 4;
+ if (temp < 0x0800)
+ res = 625 * (long) temp;
+ else
+ res = ((long) temp - 0x01000) * 625;
+
+ return res / 10;
+}
+
+#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000)
+
+#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val)<0?\
+ ((val)-500)/1000:((val)+500)/1000,0,255)
+
+#define ALARMS_FROM_REG(val) (val)
+
+#define DIV_FROM_REG(val) (1 << (val))
+#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
+
+/*
+ * Client data (each client gets its own)
+ */
+
+struct lm80_data {
+ struct semaphore update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ u8 in[7]; /* Register value */
+ u8 in_max[7]; /* Register value */
+ u8 in_min[7]; /* Register value */
+ u8 fan[2]; /* Register value */
+ u8 fan_min[2]; /* Register value */
+ u8 fan_div[2]; /* Register encoding, shifted right */
+ u16 temp; /* Register values, shifted right */
+ u8 temp_hot_max; /* Register value */
+ u8 temp_hot_hyst; /* Register value */
+ u8 temp_os_max; /* Register value */
+ u8 temp_os_hyst; /* Register value */
+ u16 alarms; /* Register encoding, combined */
+};
+
+/*
+ * Functions declaration
+ */
+
+static int lm80_attach_adapter(struct i2c_adapter *adapter);
+static int lm80_detect(struct i2c_adapter *adapter, int address, int kind);
+static void lm80_init_client(struct i2c_client *client);
+static int lm80_detach_client(struct i2c_client *client);
+static void lm80_update_client(struct i2c_client *client);
+static int lm80_read_value(struct i2c_client *client, u8 reg);
+static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
+
+/*
+ * Internal variables
+ */
+
+static int lm80_id = 0;
+
+/*
+ * Driver data (common to all clients)
+ */
+
+static struct i2c_driver lm80_driver = {
+ .owner = THIS_MODULE,
+ .name = "lm80",
+ .id = I2C_DRIVERID_LM80,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = lm80_attach_adapter,
+ .detach_client = lm80_detach_client,
+};
+
+/*
+ * Sysfs stuff
+ */
+
+#define show_in(suffix, value) \
+static ssize_t show_in_##suffix(struct device *dev, char *buf) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ lm80_update_client(client); \
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->value)); \
+}
+show_in(min0, in_min[0]);
+show_in(min1, in_min[1]);
+show_in(min2, in_min[2]);
+show_in(min3, in_min[3]);
+show_in(min4, in_min[4]);
+show_in(min5, in_min[5]);
+show_in(min6, in_min[6]);
+show_in(max0, in_max[0]);
+show_in(max1, in_max[1]);
+show_in(max2, in_max[2]);
+show_in(max3, in_max[3]);
+show_in(max4, in_max[4]);
+show_in(max5, in_max[5]);
+show_in(max6, in_max[6]);
+show_in(input0, in[0]);
+show_in(input1, in[1]);
+show_in(input2, in[2]);
+show_in(input3, in[3]);
+show_in(input4, in[4]);
+show_in(input5, in[5]);
+show_in(input6, in[6]);
+
+#define set_in(suffix, value, reg) \
+static ssize_t set_in_##suffix(struct device *dev, const char *buf, \
+ size_t count) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ long val = simple_strtol(buf, NULL, 10); \
+ data->value = IN_TO_REG(val); \
+ lm80_write_value(client, reg, data->value); \
+ return count; \
+}
+set_in(min0, in_min[0], LM80_REG_IN_MIN(0));
+set_in(min1, in_min[1], LM80_REG_IN_MIN(1));
+set_in(min2, in_min[2], LM80_REG_IN_MIN(2));
+set_in(min3, in_min[3], LM80_REG_IN_MIN(3));
+set_in(min4, in_min[4], LM80_REG_IN_MIN(4));
+set_in(min5, in_min[5], LM80_REG_IN_MIN(5));
+set_in(min6, in_min[6], LM80_REG_IN_MIN(6));
+set_in(max0, in_max[0], LM80_REG_IN_MAX(0));
+set_in(max1, in_max[1], LM80_REG_IN_MAX(1));
+set_in(max2, in_max[2], LM80_REG_IN_MAX(2));
+set_in(max3, in_max[3], LM80_REG_IN_MAX(3));
+set_in(max4, in_max[4], LM80_REG_IN_MAX(4));
+set_in(max5, in_max[5], LM80_REG_IN_MAX(5));
+set_in(max6, in_max[6], LM80_REG_IN_MAX(6));
+
+#define show_fan(suffix, value, div) \
+static ssize_t show_fan_##suffix(struct device *dev, char *buf) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ lm80_update_client(client); \
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->value, \
+ DIV_FROM_REG(data->div))); \
+}
+show_fan(min1, fan_min[0], fan_div[0]);
+show_fan(min2, fan_min[1], fan_div[1]);
+show_fan(input1, fan[0], fan_div[0]);
+show_fan(input2, fan[1], fan_div[1]);
+
+#define show_fan_div(suffix, value) \
+static ssize_t show_fan_div##suffix(struct device *dev, char *buf) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ lm80_update_client(client); \
+ return sprintf(buf, "%d\n", DIV_FROM_REG(data->value)); \
+}
+show_fan_div(1, fan_div[0]);
+show_fan_div(2, fan_div[1]);
+
+#define set_fan(suffix, value, reg, div) \
+static ssize_t set_fan_##suffix(struct device *dev, const char *buf, \
+ size_t count) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ long val = simple_strtoul(buf, NULL, 10); \
+ data->value = FAN_TO_REG(val, DIV_FROM_REG(data->div)); \
+ lm80_write_value(client, reg, data->value); \
+ return count; \
+}
+set_fan(min1, fan_min[0], LM80_REG_FAN1_MIN, fan_div[0]);
+set_fan(min2, fan_min[1], LM80_REG_FAN2_MIN, fan_div[1]);
+
+static ssize_t show_temp_input1(struct device *dev, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm80_data *data = i2c_get_clientdata(client);
+ lm80_update_client(client);
+ return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp));
+}
+
+#define show_temp(suffix, value) \
+static ssize_t show_temp_##suffix(struct device *dev, char *buf) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ lm80_update_client(client); \
+ return sprintf(buf, "%d\n", TEMP_LIMIT_FROM_REG(data->value)); \
+}
+show_temp(hot_max, temp_hot_max);
+show_temp(hot_hyst, temp_hot_hyst);
+show_temp(os_max, temp_os_max);
+show_temp(os_hyst, temp_os_hyst);
+
+#define set_temp(suffix, value, reg) \
+static ssize_t set_temp_##suffix(struct device *dev, const char *buf, \
+ size_t count) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct lm80_data *data = i2c_get_clientdata(client); \
+ long val = simple_strtoul(buf, NULL, 10); \
+ data->value = TEMP_LIMIT_TO_REG(val); \
+ lm80_write_value(client, reg, data->value); \
+ return count; \
+}
+set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX);
+set_temp(hot_hyst, temp_hot_hyst, LM80_REG_TEMP_HOT_HYST);
+set_temp(os_max, temp_os_max, LM80_REG_TEMP_OS_MAX);
+set_temp(os_hyst, temp_os_hyst, LM80_REG_TEMP_OS_HYST);
+
+static ssize_t show_alarms(struct device *dev, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm80_data *data = i2c_get_clientdata(client);
+ lm80_update_client(client);
+ return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->alarms));
+}
+
+static DEVICE_ATTR(in_min0, S_IWUSR | S_IRUGO, show_in_min0, set_in_min0);
+static DEVICE_ATTR(in_min1, S_IWUSR | S_IRUGO, show_in_min1, set_in_min1);
+static DEVICE_ATTR(in_min2, S_IWUSR | S_IRUGO, show_in_min2, set_in_min2);
+static DEVICE_ATTR(in_min3, S_IWUSR | S_IRUGO, show_in_min3, set_in_min3);
+static DEVICE_ATTR(in_min4, S_IWUSR | S_IRUGO, show_in_min4, set_in_min4);
+static DEVICE_ATTR(in_min5, S_IWUSR | S_IRUGO, show_in_min5, set_in_min5);
+static DEVICE_ATTR(in_min6, S_IWUSR | S_IRUGO, show_in_min6, set_in_min6);
+static DEVICE_ATTR(in_max0, S_IWUSR | S_IRUGO, show_in_max0, set_in_max0);
+static DEVICE_ATTR(in_max1, S_IWUSR | S_IRUGO, show_in_max1, set_in_max1);
+static DEVICE_ATTR(in_max2, S_IWUSR | S_IRUGO, show_in_max2, set_in_max2);
+static DEVICE_ATTR(in_max3, S_IWUSR | S_IRUGO, show_in_max3, set_in_max3);
+static DEVICE_ATTR(in_max4, S_IWUSR | S_IRUGO, show_in_max4, set_in_max4);
+static DEVICE_ATTR(in_max5, S_IWUSR | S_IRUGO, show_in_max5, set_in_max5);
+static DEVICE_ATTR(in_max6, S_IWUSR | S_IRUGO, show_in_max6, set_in_max6);
+static DEVICE_ATTR(in_input0, S_IRUGO, show_in_input0, NULL);
+static DEVICE_ATTR(in_input1, S_IRUGO, show_in_input1, NULL);
+static DEVICE_ATTR(in_input2, S_IRUGO, show_in_input2, NULL);
+static DEVICE_ATTR(in_input3, S_IRUGO, show_in_input3, NULL);
+static DEVICE_ATTR(in_input4, S_IRUGO, show_in_input4, NULL);
+static DEVICE_ATTR(in_input5, S_IRUGO, show_in_input5, NULL);
+static DEVICE_ATTR(in_input6, S_IRUGO, show_in_input6, NULL);
+static DEVICE_ATTR(fan_min1, S_IWUSR | S_IRUGO, show_fan_min1,
+ set_fan_min1);
+static DEVICE_ATTR(fan_min2, S_IWUSR | S_IRUGO, show_fan_min2,
+ set_fan_min2);
+static DEVICE_ATTR(fan_input1, S_IRUGO, show_fan_input1, NULL);
+static DEVICE_ATTR(fan_input2, S_IRUGO, show_fan_input2, NULL);
+static DEVICE_ATTR(fan_div1, S_IRUGO, show_fan_div1, NULL);
+static DEVICE_ATTR(fan_div2, S_IRUGO, show_fan_div2, NULL);
+static DEVICE_ATTR(temp_input1, S_IRUGO, show_temp_input1, NULL);
+static DEVICE_ATTR(temp_max1, S_IWUSR | S_IRUGO, show_temp_hot_max,
+ set_temp_hot_max);
+static DEVICE_ATTR(temp_max1_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst,
+ set_temp_hot_hyst);
+static DEVICE_ATTR(temp_crit1, S_IWUSR | S_IRUGO, show_temp_os_max,
+ set_temp_os_max);
+static DEVICE_ATTR(temp_crit1_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst,
+ set_temp_os_hyst);
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+
+/*
+ * Real code
+ */
+
+static int lm80_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_ADAP_CLASS_SMBUS))
+ return 0;
+ return i2c_detect(adapter, &addr_data, lm80_detect);
+}
+
+int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ int i, cur;
+ struct i2c_client *new_client;
+ struct lm80_data *data;
+ int err = 0;
+ const char *name;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ goto exit;
+
+ /* OK. For now, we presume we have a valid client. We now create the
+ client structure, even though we cannot fill it completely yet.
+ But it allows us to access lm80_{read,write}_value. */
+ if (!(new_client = kmalloc(sizeof(struct i2c_client) +
+ sizeof(struct lm80_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+ memset(new_client, 0x00, sizeof(struct i2c_client) +
+ sizeof(struct lm80_data));
+
+ data = (struct lm80_data *) (new_client + 1);
+ i2c_set_clientdata(new_client, data);
+ new_client->addr = address;
+ new_client->adapter = adapter;
+ new_client->driver = &lm80_driver;
+ new_client->flags = 0;
+
+ /* Now, we do the remaining detection. It is lousy. */
+ if (lm80_read_value(new_client, LM80_REG_ALARM2) & 0xc0)
+ goto error_free;
+ for (i = 0x2a; i <= 0x3d; i++) {
+ cur = i2c_smbus_read_byte_data(new_client, i);
+ if ((i2c_smbus_read_byte_data(new_client, i + 0x40) != cur)
+ || (i2c_smbus_read_byte_data(new_client, i + 0x80) != cur)
+ || (i2c_smbus_read_byte_data(new_client, i + 0xc0) != cur))
+ goto error_free;
+ }
+
+ /* Determine the chip type - only one kind supported! */
+ kind = lm80;
+ name = "lm80";
+
+ /* Fill in the remaining client fields and put it into the global list */
+ strlcpy(new_client->name, name, I2C_NAME_SIZE);
+
+ new_client->id = lm80_id++;
+ 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 error_free;
+
+ /* Initialize the LM80 chip */
+ lm80_init_client(new_client);
+
+ /* Register sysfs hooks */
+ device_create_file(&new_client->dev, &dev_attr_in_min0);
+ device_create_file(&new_client->dev, &dev_attr_in_min1);
+ device_create_file(&new_client->dev, &dev_attr_in_min2);
+ device_create_file(&new_client->dev, &dev_attr_in_min3);
+ device_create_file(&new_client->dev, &dev_attr_in_min4);
+ device_create_file(&new_client->dev, &dev_attr_in_min5);
+ device_create_file(&new_client->dev, &dev_attr_in_min6);
+ device_create_file(&new_client->dev, &dev_attr_in_max0);
+ device_create_file(&new_client->dev, &dev_attr_in_max1);
+ device_create_file(&new_client->dev, &dev_attr_in_max2);
+ device_create_file(&new_client->dev, &dev_attr_in_max3);
+ device_create_file(&new_client->dev, &dev_attr_in_max4);
+ device_create_file(&new_client->dev, &dev_attr_in_max5);
+ device_create_file(&new_client->dev, &dev_attr_in_max6);
+ device_create_file(&new_client->dev, &dev_attr_in_input0);
+ device_create_file(&new_client->dev, &dev_attr_in_input1);
+ device_create_file(&new_client->dev, &dev_attr_in_input2);
+ device_create_file(&new_client->dev, &dev_attr_in_input3);
+ device_create_file(&new_client->dev, &dev_attr_in_input4);
+ device_create_file(&new_client->dev, &dev_attr_in_input5);
+ device_create_file(&new_client->dev, &dev_attr_in_input6);
+ device_create_file(&new_client->dev, &dev_attr_fan_min1);
+ device_create_file(&new_client->dev, &dev_attr_fan_min2);
+ device_create_file(&new_client->dev, &dev_attr_fan_input1);
+ device_create_file(&new_client->dev, &dev_attr_fan_input2);
+ device_create_file(&new_client->dev, &dev_attr_fan_div1);
+ device_create_file(&new_client->dev, &dev_attr_fan_div2);
+ device_create_file(&new_client->dev, &dev_attr_temp_input1);
+ device_create_file(&new_client->dev, &dev_attr_temp_max1);
+ device_create_file(&new_client->dev, &dev_attr_temp_max1_hyst);
+ device_create_file(&new_client->dev, &dev_attr_temp_crit1);
+ device_create_file(&new_client->dev, &dev_attr_temp_crit1_hyst);
+ device_create_file(&new_client->dev, &dev_attr_alarms);
+
+ return 0;
+
+error_free:
+ kfree(new_client);
+exit:
+ return err;
+}
+
+static int lm80_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;
+ }
+
+ kfree(client);
+ return 0;
+}
+
+static int lm80_read_value(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+/* Called when we have found a new LM80. */
+static void lm80_init_client(struct i2c_client *client)
+{
+ /* Reset all except Watchdog values and last conversion values
+ This sets fan-divs to 2, among others. This makes most other
+ initializations unnecessary */
+ lm80_write_value(client, LM80_REG_CONFIG, 0x80);
+ /* Set 11-bit temperature resolution */
+ lm80_write_value(client, LM80_REG_RES, 0x08);
+
+ /* Start monitoring */
+ lm80_write_value(client, LM80_REG_CONFIG, 0x01);
+}
+
+static void lm80_update_client(struct i2c_client *client)
+{
+ struct lm80_data *data = i2c_get_clientdata(client);
+ int i;
+
+ down(&data->update_lock);
+
+ if ((jiffies - data->last_updated > 2 * HZ) ||
+ (jiffies < data->last_updated) || !data->valid) {
+
+ dev_dbg(&client->dev, "Starting lm80 update\n");
+ for (i = 0; i <= 6; i++) {
+ data->in[i] =
+ lm80_read_value(client, LM80_REG_IN(i));
+ data->in_min[i] =
+ lm80_read_value(client, LM80_REG_IN_MIN(i));
+ data->in_max[i] =
+ lm80_read_value(client, LM80_REG_IN_MAX(i));
+ }
+ data->fan[0] = lm80_read_value(client, LM80_REG_FAN1);
+ data->fan_min[0] =
+ lm80_read_value(client, LM80_REG_FAN1_MIN);
+ data->fan[1] = lm80_read_value(client, LM80_REG_FAN2);
+ data->fan_min[1] =
+ lm80_read_value(client, LM80_REG_FAN2_MIN);
+
+ data->temp =
+ (lm80_read_value(client, LM80_REG_TEMP) << 8) |
+ (lm80_read_value(client, LM80_REG_RES) & 0xf0);
+ data->temp_os_max =
+ lm80_read_value(client, LM80_REG_TEMP_OS_MAX);
+ data->temp_os_hyst =
+ lm80_read_value(client, LM80_REG_TEMP_OS_HYST);
+ data->temp_hot_max =
+ lm80_read_value(client, LM80_REG_TEMP_HOT_MAX);
+ data->temp_hot_hyst =
+ lm80_read_value(client, LM80_REG_TEMP_HOT_HYST);
+
+ i = lm80_read_value(client, LM80_REG_FANDIV);
+ data->fan_div[0] = (i >> 2) & 0x03;
+ data->fan_div[1] = (i >> 4) & 0x03;
+ data->alarms = lm80_read_value(client, LM80_REG_ALARM1) +
+ (lm80_read_value(client, LM80_REG_ALARM2) << 8);
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+}
+
+static int __init sensors_lm80_init(void)
+{
+ return i2c_add_driver(&lm80_driver);
+}
+
+static void __exit sensors_lm80_exit(void)
+{
+ i2c_del_driver(&lm80_driver);
+}
+
+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
+ "Philip Edelbrock <phil@netroedge.com>");
+MODULE_DESCRIPTION("LM80 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_lm80_init);
+module_exit(sensors_lm80_exit);
diff -Nru a/drivers/i2c/chips/w83l785ts.c b/drivers/i2c/chips/w83l785ts.c
--- a/drivers/i2c/chips/w83l785ts.c Thu Feb 19 23:07:18 2004
+++ b/drivers/i2c/chips/w83l785ts.c Thu Feb 19 23:07:18 2004
@@ -12,6 +12,9 @@
* Ported to Linux 2.6 by Wolfgang Ziegler <nuppla@gmx.at> and Jean Delvare
* <khali@linux-fr.org>.
*
+ * Thanks to James Bolt <james@evilpenguin.com> for benchmarking the read
+ * error handling mechanism.
+ *
* 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