Re: [PATCH 0/4] Switch ads7846 driver to use soft irq

[Jason Wang <jason77.wang@gmail.com>]

Sorry for using soft irq here, should be *thread irq*.


Jason Wang wrote:
> Some explanations:
>
> The first patch is from dmitry, he build a frame work for this driver
> to use soft irq. The remaining 3 patches are from me to fix some issues
> for the driver of soft irq verison.
>
> We change this driver to use soft irq because under current version,
> we must use spin lock to protect racing issues, the regulator
> operations are also in the racing issue list but we can't put it
> in the spin lock protected area because regulator operations always
> implement via i2c/spi transfers, in those transfers often call sleep
> funcitons. Now change to use soft irq, we can use mutex instread of
> spin lock, so this issue is solved.
>
> I have tested these patches on the ti_omap3530evm board:
>  1)use ts_lib after normal boot
>  2)use ts_lib after "#echo 1/0 > /sys/bus/spi/devices/spi0.1/disable"
>  3)use ts_lib after "#echo mem > /sys/power/state" and "wake up"
>
>
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