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-rw-r--r--Documentation/i2c/busses/i2c-parport16
-rw-r--r--drivers/hwmon/w83792d.c5
-rw-r--r--drivers/i2c/busses/Kconfig5
-rw-r--r--drivers/i2c/busses/i2c-parport-light.c9
-rw-r--r--drivers/i2c/busses/i2c-parport.c9
-rw-r--r--drivers/i2c/busses/i2c-parport.h2
-rw-r--r--drivers/i2c/busses/i2c-sis96x.c8
-rw-r--r--drivers/i2c/chips/ds1374.c16
-rw-r--r--drivers/i2c/chips/m41t00.c16
9 files changed, 51 insertions, 35 deletions
diff --git a/Documentation/i2c/busses/i2c-parport b/Documentation/i2c/busses/i2c-parport
index d9f23c0..77b995d 100644
--- a/Documentation/i2c/busses/i2c-parport
+++ b/Documentation/i2c/busses/i2c-parport
@@ -12,18 +12,22 @@ meant as a replacement for the older, individual drivers:
teletext adapters)
It currently supports the following devices:
- * Philips adapter
- * home brew teletext adapter
- * Velleman K8000 adapter
- * ELV adapter
- * Analog Devices evaluation boards (ADM1025, ADM1030, ADM1031, ADM1032)
- * Barco LPT->DVI (K5800236) adapter
+ * (type=0) Philips adapter
+ * (type=1) home brew teletext adapter
+ * (type=2) Velleman K8000 adapter
+ * (type=3) ELV adapter
+ * (type=4) Analog Devices ADM1032 evaluation board
+ * (type=5) Analog Devices evaluation boards: ADM1025, ADM1030, ADM1031
+ * (type=6) Barco LPT->DVI (K5800236) adapter
These devices use different pinout configurations, so you have to tell
the driver what you have, using the type module parameter. There is no
way to autodetect the devices. Support for different pinout configurations
can be easily added when needed.
+Earlier kernels defaulted to type=0 (Philips). But now, if the type
+parameter is missing, the driver will simply fail to initialize.
+
Building your own adapter
-------------------------
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
index 6865c64..958602e 100644
--- a/drivers/hwmon/w83792d.c
+++ b/drivers/hwmon/w83792d.c
@@ -1161,7 +1161,7 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
bank. */
if (kind < 0) {
if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
- dev_warn(dev, "Detection failed at step 3\n");
+ dev_dbg(dev, "Detection failed at step 1\n");
goto ERROR1;
}
val1 = w83792d_read_value(client, W83792D_REG_BANK);
@@ -1170,6 +1170,7 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
if (!(val1 & 0x07)) { /* is Bank0 */
if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
((val1 & 0x80) && (val2 != 0x5c))) {
+ dev_dbg(dev, "Detection failed at step 2\n");
goto ERROR1;
}
}
@@ -1177,7 +1178,7 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
should match */
if (w83792d_read_value(client,
W83792D_REG_I2C_ADDR) != address) {
- dev_warn(dev, "Detection failed at step 5\n");
+ dev_dbg(dev, "Detection failed at step 3\n");
goto ERROR1;
}
}
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 089c6f5..d6d4494 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -286,7 +286,10 @@ config I2C_PARPORT
This driver is a replacement for (and was inspired by) an older
driver named i2c-philips-par. The new driver supports more devices,
and makes it easier to add support for new devices.
-
+
+ An adapter type parameter is now mandatory. Please read the file
+ Documentation/i2c/busses/i2c-parport for details.
+
Another driver exists, named i2c-parport-light, which doesn't depend
on the parport driver. This is meant for embedded systems. Don't say
Y here if you intend to say Y or M there.
diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c
index c63025a..e09ebbb 100644
--- a/drivers/i2c/busses/i2c-parport-light.c
+++ b/drivers/i2c/busses/i2c-parport-light.c
@@ -121,9 +121,14 @@ static struct i2c_adapter parport_adapter = {
static int __init i2c_parport_init(void)
{
- if (type < 0 || type >= ARRAY_SIZE(adapter_parm)) {
+ if (type < 0) {
+ printk(KERN_WARNING "i2c-parport: adapter type unspecified\n");
+ return -ENODEV;
+ }
+
+ if (type >= ARRAY_SIZE(adapter_parm)) {
printk(KERN_WARNING "i2c-parport: invalid type (%d)\n", type);
- type = 0;
+ return -ENODEV;
}
if (base == 0) {
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index 7e2e8cd..934bd55 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -241,9 +241,14 @@ static struct parport_driver i2c_parport_driver = {
static int __init i2c_parport_init(void)
{
- if (type < 0 || type >= ARRAY_SIZE(adapter_parm)) {
+ if (type < 0) {
+ printk(KERN_WARNING "i2c-parport: adapter type unspecified\n");
+ return -ENODEV;
+ }
+
+ if (type >= ARRAY_SIZE(adapter_parm)) {
printk(KERN_WARNING "i2c-parport: invalid type (%d)\n", type);
- type = 0;
+ return -ENODEV;
}
return parport_register_driver(&i2c_parport_driver);
diff --git a/drivers/i2c/busses/i2c-parport.h b/drivers/i2c/busses/i2c-parport.h
index d702e5e..9ddd816 100644
--- a/drivers/i2c/busses/i2c-parport.h
+++ b/drivers/i2c/busses/i2c-parport.h
@@ -90,7 +90,7 @@ static struct adapter_parm adapter_parm[] = {
},
};
-static int type;
+static int type = -1;
module_param(type, int, 0);
MODULE_PARM_DESC(type,
"Type of adapter:\n"
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
index 3024907..1a73c05 100644
--- a/drivers/i2c/busses/i2c-sis96x.c
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -43,13 +43,6 @@
#include <linux/init.h>
#include <asm/io.h>
-/*
- HISTORY:
- 2003-05-11 1.0.0 Updated from lm_sensors project for kernel 2.5
- (was i2c-sis645.c from lm_sensors 2.7.0)
-*/
-#define SIS96x_VERSION "1.0.0"
-
/* base address register in PCI config space */
#define SIS96x_BAR 0x04
@@ -337,7 +330,6 @@ static struct pci_driver sis96x_driver = {
static int __init i2c_sis96x_init(void)
{
- printk(KERN_INFO "i2c-sis96x version %s\n", SIS96x_VERSION);
return pci_register_driver(&sis96x_driver);
}
diff --git a/drivers/i2c/chips/ds1374.c b/drivers/i2c/chips/ds1374.c
index 03d09ed..4630f19 100644
--- a/drivers/i2c/chips/ds1374.c
+++ b/drivers/i2c/chips/ds1374.c
@@ -27,6 +27,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/mutex.h>
+#include <linux/workqueue.h>
#define DS1374_REG_TOD0 0x00
#define DS1374_REG_TOD1 0x01
@@ -139,7 +140,7 @@ ulong ds1374_get_rtc_time(void)
return t1;
}
-static void ds1374_set_tlet(ulong arg)
+static void ds1374_set_work(void *arg)
{
ulong t1, t2;
int limit = 10; /* arbitrary retry limit */
@@ -168,17 +169,18 @@ static void ds1374_set_tlet(ulong arg)
static ulong new_time;
-static DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet,
- (ulong) & new_time);
+static struct workqueue_struct *ds1374_workqueue;
+
+static DECLARE_WORK(ds1374_work, ds1374_set_work, &new_time);
int ds1374_set_rtc_time(ulong nowtime)
{
new_time = nowtime;
if (in_interrupt())
- tasklet_schedule(&ds1374_tasklet);
+ queue_work(ds1374_workqueue, &ds1374_work);
else
- ds1374_set_tlet((ulong) & new_time);
+ ds1374_set_work(&new_time);
return 0;
}
@@ -204,6 +206,8 @@ static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
client->adapter = adap;
client->driver = &ds1374_driver;
+ ds1374_workqueue = create_singlethread_workqueue("ds1374");
+
if ((rc = i2c_attach_client(client)) != 0) {
kfree(client);
return rc;
@@ -227,7 +231,7 @@ static int ds1374_detach(struct i2c_client *client)
if ((rc = i2c_detach_client(client)) == 0) {
kfree(i2c_get_clientdata(client));
- tasklet_kill(&ds1374_tasklet);
+ destroy_workqueue(ds1374_workqueue);
}
return rc;
}
diff --git a/drivers/i2c/chips/m41t00.c b/drivers/i2c/chips/m41t00.c
index b5aabe7..27fc9ff 100644
--- a/drivers/i2c/chips/m41t00.c
+++ b/drivers/i2c/chips/m41t00.c
@@ -25,6 +25,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/mutex.h>
+#include <linux/workqueue.h>
#include <asm/time.h>
#include <asm/rtc.h>
@@ -111,7 +112,7 @@ m41t00_get_rtc_time(void)
}
static void
-m41t00_set_tlet(ulong arg)
+m41t00_set(void *arg)
{
struct rtc_time tm;
ulong nowtime = *(ulong *)arg;
@@ -145,9 +146,9 @@ m41t00_set_tlet(ulong arg)
return;
}
-static ulong new_time;
-
-DECLARE_TASKLET_DISABLED(m41t00_tasklet, m41t00_set_tlet, (ulong)&new_time);
+static ulong new_time;
+static struct workqueue_struct *m41t00_wq;
+static DECLARE_WORK(m41t00_work, m41t00_set, &new_time);
int
m41t00_set_rtc_time(ulong nowtime)
@@ -155,9 +156,9 @@ m41t00_set_rtc_time(ulong nowtime)
new_time = nowtime;
if (in_interrupt())
- tasklet_schedule(&m41t00_tasklet);
+ queue_work(m41t00_wq, &m41t00_work);
else
- m41t00_set_tlet((ulong)&new_time);
+ m41t00_set(&new_time);
return 0;
}
@@ -189,6 +190,7 @@ m41t00_probe(struct i2c_adapter *adap, int addr, int kind)
return rc;
}
+ m41t00_wq = create_singlethread_workqueue("m41t00");
save_client = client;
return 0;
}
@@ -206,7 +208,7 @@ m41t00_detach(struct i2c_client *client)
if ((rc = i2c_detach_client(client)) == 0) {
kfree(client);
- tasklet_kill(&m41t00_tasklet);
+ destroy_workqueue(m41t00_wq);
}
return rc;
}
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