Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6: (78 commits)
commit e97b81ddbb
Author: Mark M. Hoffman <mhoffman@lightlink.com>
Date: Thu Mar 23 16:50:25 2006 +0100
[PATCH] i2c-parport: Make type parameter mandatory
This patch forces the user to specify what type of adapter is present when
loading i2c-parport or i2c-parport-light. If none is specified, the driver
init simply fails - instead of assuming adapter type 0.
This alleviates the sometimes lengthy boot time delays which can be caused
by accidentally building one of these into a kernel along with several i2c
slave drivers that have lengthy probe routines (e.g. hwmon drivers).
Kconfig and documentation updated accordingly.
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
...
This commit is contained in:
Linus Torvalds
commit
11f16971ce
9 changed files with 51 additions and 35 deletions
|
|
@ -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
|
||||
-------------------------
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -287,6 +287,9 @@ config I2C_PARPORT
|
|||
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.
|
||||
|
|
|
|||
|
|
@ -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) {
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
|
|
|
|||
|
|
@ -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"
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
|
|
@ -146,8 +147,8 @@ m41t00_set_tlet(ulong arg)
|
|||
}
|
||||
|
||||
static ulong new_time;
|
||||
|
||||
DECLARE_TASKLET_DISABLED(m41t00_tasklet, m41t00_set_tlet, (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;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue