diff options
| author | Jean Delvare <khali@linux-fr.org> | 2005-10-31 20:51:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-11-08 08:46:38 +0300 |
| commit | 8750197f0e8f5467297d72e11444cf32f29d790f (patch) | |
| tree | 9fdac6bbc7934e2fb5ff609f9c202950d245f68b /drivers/i2c/busses/i2c-viapro.c | |
| parent | 4a1c4447e523003019a2bf9b972ed6fe411e84d2 (diff) | |
| download | linux-8750197f0e8f5467297d72e11444cf32f29d790f.tar.xz | |
[PATCH] i2c-viapro: Some adjustments
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>
Diffstat (limited to 'drivers/i2c/busses/i2c-viapro.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-viapro.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index c9366b504833..a2237d4b2cf2 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -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"); |