korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-26 21:54:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

[PATCH] i2c-viapro: Some adjustments

Browse Source 
The big i2c-viapro SMBus driver update which went into 2.6.14-git1
introduced a few minor issues. Nothing critical, but I would like a
few adjustments to be merged in to fix the following problems:

* VIA should not be spelled Via.
* Frodo Looijaard and Philip Edelbrock did not write the i2c-viapro
  driver.
* When debugging is disabled, half of messages would be logged.
* Drop an unneeded masking.
* Some port reads can be avoided now that the transaction size is
  passed as a parameter to vt596_transaction().
* SMBus Receive Byte transactions are used for probing too (for
  EEPROMs), so hide errors on these too.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare 2005-10-31 18:51:21 +01:00 committed by Greg Kroah-Hartman
parent 4a1c4447e5
commit 8750197f0e
2 changed files with 16 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/i2c/busses/i2c-viapro
View File

@ -7,12 +7,10 @@ Supported adapters:
* VIA Technologies, Inc. VT82C686A/B
Datasheet: Sometimes available at the VIA website
* VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237
Datasheet: available on request from Via
* VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237R
Datasheet: available on request from VIA
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Kyösti Mälkki <kmalkki@cc.hut.fi>,
Mark D. Studebaker <mdsxyz123@yahoo.com>,
Jean Delvare <khali@linux-fr.org>

27
drivers/i2c/busses/i2c-viapro.c
View File

@ -142,19 +142,18 @@ static int vt596_transaction(u8 size)
/* Make sure the SMBus host is ready to start transmitting */
if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). "
"Resetting... ", temp);
"Resetting...\n", temp);
outb_p(temp, SMBHSTSTS);
if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
printk("Failed! (0x%02x)\n", temp);
dev_err(&vt596_adapter.dev, "SMBus reset failed! "
"(0x%02x)\n", temp);
return -1;
} else {
printk("Successful!\n");
}
}
/* Start the transaction by setting bit 6 */
outb_p(0x40 | (size & 0x3C), SMBHSTCNT);
outb_p(0x40 | size, SMBHSTCNT);
/* We will always wait for a fraction of a second */
do {
@ -171,7 +170,7 @@ static int vt596_transaction(u8 size)
if (temp & 0x10) {
result = -1;
dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n",
inb_p(SMBHSTCNT) & 0x3C);
size);
}
if (temp & 0x08) {
@ -180,11 +179,13 @@ static int vt596_transaction(u8 size)
}
if (temp & 0x04) {
int read = inb_p(SMBHSTADD) & 0x01;
result = -1;
/* Quick commands are used to probe for chips, so
errors are expected, and we don't want to frighten the
user. */
if ((inb_p(SMBHSTCNT) & 0x3C) != VT596_QUICK)
/* The quick and receive byte commands are used to probe
for chips, so errors are expected, and we don't want
to frighten the user. */
if (!((size == VT596_QUICK && !read) ||
(size == VT596_BYTE && read)))
dev_err(&vt596_adapter.dev, "Transaction error!\n");
}
@ -462,9 +463,9 @@ static void __exit i2c_vt596_exit(void)
}
}
MODULE_AUTHOR(
"Frodo Looijaard <frodol@dds.nl> and "
"Philip Edelbrock <phil@netroedge.com>");
MODULE_AUTHOR("Kyosti Malkki <kmalkki@cc.hut.fi>, "
"Mark D. Studebaker <mdsxyz123@yahoo.com> and "
"Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("vt82c596 SMBus driver");
MODULE_LICENSE("GPL");