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imx233: add pinctrl debug code to track pin uses

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Past development has proved that one can mistakely use
the same pin for two uses without noticing. Since this
causes extremely hard to find bugs, the infrastructure
will allow to register pin uses and panic when a conflict
is detected. The pinctrl debug now shows the pin uses
when its support is compiled in.

Change-Id: Idb2d5235ce09207d77aa474d6f158e72b933761a
This commit is contained in:
Amaury Pouly 2012-05-10 00:08:03 +02:00
parent d29a11b7a8
commit 645680d62b
13 changed files with 122 additions and 6 deletions
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2
firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c
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@ -87,6 +87,8 @@ struct i2c_interface fmradio_i2c =
void fmradio_i2c_init(void)
{
imx233_pinctrl_acquire_pin(1, 24, "fmradio i2c");
imx233_pinctrl_acquire_pin(1, 22, "fmradio i2c");
imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO);
imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO);
fmradio_i2c_bus = i2c_add_node(&fmradio_i2c);