linux-kernel - [PATCH] lm90: Support the MAX6648/6692 chips

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090302210106.GD6550@plum>
Date:	Mon, 2 Mar 2009 13:01:06 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Jean Delvare <khali@...ux-fr.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	lm-sensors <lm-sensors@...sensors.org>
Subject: [PATCH] lm90: Support the MAX6648/6692 chips

The max6648 chip has nearly the same register set as the 6657 and
seems to have a working manufacturer/chip id so we can detect it.
This patch adds support for it.  Tested on a Nvidia Quadro FX 1500
card.

Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---

 drivers/hwmon/Kconfig |    4 ++--
 drivers/hwmon/lm90.c  |    7 ++++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 8c312c6..7da49d3 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -550,8 +550,8 @@ config SENSORS_LM90
 	help
 	  If you say yes here you get support for National Semiconductor LM90,
 	  LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim
-	  MAX6646, MAX6647, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680 and
-	  MAX6681 sensor chips.
+	  MAX6646, MAX6647, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680,
+	  MAX6648, MAX6692 and MAX6681 sensor chips.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm90.
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 96a7018..1802366 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -776,7 +776,12 @@ static int lm90_detect(struct i2c_client *new_client, int kind,
 			 && (reg_config1 & 0x3f) == 0x00
 			 && reg_convrate <= 0x07) {
 				kind = max6646;
-			}
+			} else
+			/* The MAX6648/6692 chips have a working man/chip id
+			 * and the same register set as the 6657.
+			 */
+			if (chip_id == 0x59 && address == 0x4C)
+				kind = max6657;
 		}
 
 		if (kind <= 0) { /* identification failed */
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/