pinctrl: st: Add Interrupt support
This patch add interrupt support to the pincontroller driver.
ST Pincontroller GPIO bank can have one of the two possible types of
interrupt-wirings.
First type is via irqmux, single interrupt is used by multiple gpio
banks. This reduces number of overall interrupts numbers required. All
these banks belong to a single pincontroller.
_________
| |----> [gpio-bank (n) ]
| |----> [gpio-bank (n + 1)]
[irqN]-- | irq-mux |----> [gpio-bank (n + 2)]
| |----> [gpio-bank (... )]
|_________|----> [gpio-bank (n + 7)]
Second type has a dedicated interrupt per gpio bank.
[irqN]----> [gpio-bank (n)]
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2 files changed