[3.11.y.z extended stable] Patch "pinctrl: vt8500: Change devicetree data parsing" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    pinctrl: vt8500: Change devicetree data parsing

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 7953f90c32b82438d7d973e141ad6193bb158741 Mon Sep 17 00:00:00 2001
From: Tony Prisk <linux at prisktech.co.nz>
Date: Thu, 23 Jan 2014 21:57:33 +1300
Subject: pinctrl: vt8500: Change devicetree data parsing

commit f17248ed868767567298e1cdf06faf8159a81f7c upstream.

Due to an assumption in the VT8500 pinctrl driver, the value passed
from devicetree for 'wm,pull' was not explicitly translated before
being passed to pinconf.

Since v3.10, changes to 'enum pin_config_param', PIN_CONFIG_BIAS_PULL_(UP/DOWN)
no longer map 1-to-1 with the expected values in devicetree.

This patch adds a small translation between the devicetree values (0..2)
and the enum pin_config_param equivalent values.

Signed-off-by: Tony Prisk <linux at prisktech.co.nz>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/pinctrl/vt8500/pinctrl-wmt.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/vt8500/pinctrl-wmt.c b/drivers/pinctrl/vt8500/pinctrl-wmt.c
index 0cc4335..829eb87 100644
--- a/drivers/pinctrl/vt8500/pinctrl-wmt.c
+++ b/drivers/pinctrl/vt8500/pinctrl-wmt.c
@@ -276,7 +276,20 @@ static int wmt_pctl_dt_node_to_map_pull(struct wmt_pinctrl_data *data,
 	if (!configs)
 		return -ENOMEM;

-	configs[0] = pull;
+	switch (pull) {
+	case 0:
+		configs[0] = PIN_CONFIG_BIAS_DISABLE;
+		break;
+	case 1:
+		configs[0] = PIN_CONFIG_BIAS_PULL_DOWN;
+		break;
+	case 2:
+		configs[0] = PIN_CONFIG_BIAS_PULL_UP;
+		break;
+	default:
+		configs[0] = PIN_CONFIG_BIAS_DISABLE;
+		dev_err(data->dev, "invalid pull state %d - disabling\n", pull);
+	}

 	map->type = PIN_MAP_TYPE_CONFIGS_PIN;
 	map->data.configs.group_or_pin = data->groups[group];
--
1.8.3.2