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bcma: use chipcommon node from DT for SoC GPIO chip

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This will allow us to define GPIO-attached devices (LEDs, buttons) in
the the device tree.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2014-09-30 12:55:48 +02:00 committed by John W. Linville
parent 2101e533f4
commit a0196d1117
2 changed files with 16 additions and 0 deletions
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12
Documentation/devicetree/bindings/bus/bcma.txt
View File

@ -9,6 +9,11 @@ Required properties:
The cores on the AXI bus are automatically detected by bcma with the
memory ranges they are using and they get registered afterwards.
The top-level axi bus may contain children representing attached cores
(devices). This is needed since some hardware details can't be auto
detected (e.g. IRQ numbers). Also some of the cores may be responsible
for extra things, e.g. ChipCommon providing access to the GPIO chip.
Example:
axi@18000000 {
@ -17,4 +22,11 @@ Example:
ranges = <0x00000000 0x18000000 0x00100000>;
#address-cells = <1>;
#size-cells = <1>;
chipcommon {
reg = <0x00000000 0x1000>;
gpio-controller;
#gpio-cells = <2>;
};
};

4
drivers/bcma/driver_gpio.c
View File

@ -217,6 +217,10 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
chip->direction_output = bcma_gpio_direction_output;
#if IS_BUILTIN(CONFIG_BCM47XX)
chip->to_irq = bcma_gpio_to_irq;
#endif
#if IS_BUILTIN(CONFIG_OF)
if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
chip->of_node = cc->core->dev.of_node;
#endif
switch (cc->core->bus->chipinfo.id) {
case BCMA_CHIP_ID_BCM5357: