diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 16:27:49 +0100 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 16:27:49 +0100 |
commit | d899927728beca8357a5b4120b690cb3c1d80844 (patch) | |
tree | ccb170439cc8638d71f6120ae08a6faded46db98 /drivers/pinctrl/qcom/pinctrl-msm.c | |
parent | 8d60367808c45e33c0a9127621f4e5fc34914f6b (diff) | |
parent | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (diff) |
Merge remote-tracking branch 'remotes/fslc/4.9-2.3.x-imx' into toradex_4.9-2.3.x-imx-nextColibri-iMX7_LXDE-Image_2.8b6.184-20190401Colibri-iMX6_LXDE-Image_2.8b6.184-20190401Colibri-iMX6ULL_LXDE-Image_2.8b6.184-20190401Apalis-iMX6_LXDE-Image_2.8b6.184-20190401
Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-msm.c')
-rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index bedce3453dd3..5aa221487a9c 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -803,11 +803,24 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl) return ret; } - ret = gpiochip_add_pin_range(&pctrl->chip, dev_name(pctrl->dev), 0, 0, chip->ngpio); - if (ret) { - dev_err(pctrl->dev, "Failed to add pin range\n"); - gpiochip_remove(&pctrl->chip); - return ret; + /* + * For DeviceTree-supported systems, the gpio core checks the + * pinctrl's device node for the "gpio-ranges" property. + * If it is present, it takes care of adding the pin ranges + * for the driver. In this case the driver can skip ahead. + * + * In order to remain compatible with older, existing DeviceTree + * files which don't set the "gpio-ranges" property or systems that + * utilize ACPI the driver has to call gpiochip_add_pin_range(). + */ + if (!of_property_read_bool(pctrl->dev->of_node, "gpio-ranges")) { + ret = gpiochip_add_pin_range(&pctrl->chip, + dev_name(pctrl->dev), 0, 0, chip->ngpio); + if (ret) { + dev_err(pctrl->dev, "Failed to add pin range\n"); + gpiochip_remove(&pctrl->chip); + return ret; + } } ret = gpiochip_irqchip_add(chip, |