1 files changed, 48 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0068-hwmon-f75375s-Fix-register-write-order-when-setting-.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0068-hwmon-f75375s-Fix-register-write-order-when-setting-.patch
new file mode 100644
index 00000000..ca1f37f3
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.9/0068-hwmon-f75375s-Fix-register-write-order-when-setting-.patch
@@ -0,0 +1,48 @@
+From a93a91746fe70854f5301c526d1eec16312bebc3 Mon Sep 17 00:00:00 2001
+From: Nikolaus Schulz <schulz@macnetix.de>
+Date: Wed, 22 Feb 2012 23:18:44 +0100
+Subject: [PATCH 68/73] hwmon: (f75375s) Fix register write order when setting
+ fans to full speed
+
+commit c1c1a3d012fe5e82a9a025fb4b5a4f8ee67a53f6 upstream.
+
+By hwmon sysfs interface convention, setting pwm_enable to zero sets a fan
+to full speed.  In the f75375s driver, this need be done by enabling
+manual fan control, plus duty mode for the F875387 chip, and then setting
+the maximum duty cycle.  Fix a bug where the two necessary register writes
+were swapped, effectively discarding the setting to full-speed.
+
+Signed-off-by: Nikolaus Schulz <mail@microschulz.de>
+Cc: Riku Voipio <riku.voipio@iki.fi>
+Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/hwmon/f75375s.c |    5 +++--
+ 1 files changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
+index e4ab491..040a820 100644
+--- a/drivers/hwmon/f75375s.c
++++ b/drivers/hwmon/f75375s.c
+@@ -304,8 +304,6 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
+        case 0: /* Full speed */
+                fanmode  |= (3 << FAN_CTRL_MODE(nr));
+                data->pwm[nr] = 255;
+-               f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
+-                               data->pwm[nr]);
+                break;
+        case 1: /* PWM */
+                fanmode  |= (3 << FAN_CTRL_MODE(nr));
+@@ -318,6 +316,9 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
+        }
+        f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
+        data->pwm_enable[nr] = val;
++       if (val == 0)
++               f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
++                               data->pwm[nr]);
+        return 0;
+ }
+ 
+-- 
+1.7.7.4
+