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pinctrl: vt8500: Change devicetree data parsing 

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.

Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Tony Prisk 2014-01-23 21:57:33 +13:00 committed by Linus Walleij
parent 795779df22
commit f17248ed86
1 changed files with 14 additions and 1 deletions
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15
drivers/pinctrl/vt8500/pinctrl-wmt.c
View File

@ -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];