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authorKeerthy <j-keerthy@ti.com>2017-01-13 09:50:12 +0530
committerLinus Walleij <linus.walleij@linaro.org>2017-01-26 10:00:21 +0100
commitb5cf3fd827d2e11355c126b44ea625650ebf4d39 (patch)
treeea1b09015291512b2e8e36590f60a727a7ed2575 /include/linux/ioc4.h
parent53d333ac93911dab22d12a78b0a6414f9afb0117 (diff)
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gpio: davinci: Redesign driver to accommodate ngpios in one gpio chip
The Davinci GPIO driver is implemented to work with one monolithic Davinci GPIO platform device which may have up to Y(144) gpios. The Davinci GPIO driver instantiates number of GPIO chips with max 32 gpio pins per each during initialization and one IRQ domain. So, the current GPIO's opjects structure is: <platform device> Davinci GPIO controller |- <gpio0_chip0> ------| ... |--- irq_domain (hwirq [0..143]) |- <gpio0_chipN> ------| Current driver creates one chip for every 32 GPIOs in a controller. This was a limitation earlier now there is no need for that. Hence redesigning the driver to create one gpio chip for all the ngpio in the controller. |- <gpio0_chip0> ------|--- irq_domain (hwirq [0..143]). The previous discussion on this can be found here: https://www.spinics.net/lists/linux-omap/msg132869.html Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/ioc4.h')
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