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x86: pinctrl: Add multi-ACPI control

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Add a Kconfig to control whether pinctrl is represented as a single ACPI
device or as multiple devices. In the latter case (the default) we should
return the pin number relative to the pinctrl device.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
This commit is contained in:
Simon Glass
2020-07-07 21:32:21 -06:00
committed by Bin Meng
parent 05516e3d47
commit a9331a3388
2 changed files with 14 additions and 0 deletions
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12
drivers/pinctrl/intel/Kconfig
View File

@@ -15,6 +15,18 @@ config INTEL_PINCTRL_IOSTANDBY
bool bool
default y default y
config INTEL_PINCTRL_MULTI_ACPI_DEVICES
bool
default y
help
Enable this if the pinctrl devices are modelled as multiple,
separate ACPI devices in the ACPI tables. If enabled, the ACPI
devices match the U-Boot pinctrl devices and the pin 'offset' is
relatove to a particular pinctrl device. If disabled, there is a
single ACPI pinctrl device which includes all U-Boot pinctrl devices
and the pin 'offset' is in effect a global pin number.
config PINCTRL_INTEL_APL config PINCTRL_INTEL_APL
bool "Support Intel Apollo Lake (APL)" bool "Support Intel Apollo Lake (APL)"
help help

2
drivers/pinctrl/intel/pinctrl.c
View File

@@ -427,6 +427,8 @@ int intel_pinctrl_get_acpi_pin(struct udevice *dev, uint offset)
const struct pad_community *comm = priv->comm; const struct pad_community *comm = priv->comm;
int group; int group;
if (IS_ENABLED(CONFIG_INTEL_PINCTRL_MULTI_ACPI_DEVICES))
return offset;
group = pinctrl_group_index(comm, offset); group = pinctrl_group_index(comm, offset);
/* If pad base is not set then use GPIO number as ACPI pin number */ /* If pad base is not set then use GPIO number as ACPI pin number */