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| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/serial/driver | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/Documentation/serial/driver')
| -rw-r--r-- | kernel/Documentation/serial/driver | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/Documentation/serial/driver b/kernel/Documentation/serial/driver index c415b0ef4..379468e12 100644 --- a/kernel/Documentation/serial/driver +++ b/kernel/Documentation/serial/driver @@ -439,11 +439,13 @@ Modem control lines via GPIO Some helpers are provided in order to set/get modem control lines via GPIO. -mctrl_gpio_init(dev, idx): +mctrl_gpio_init(port, idx): This will get the {cts,rts,...}-gpios from device tree if they are present and request them, set direction etc, and return an allocated structure. devm_* functions are used, so there's no need to call mctrl_gpio_free(). + As this sets up the irq handling make sure to not handle changes to the + gpio input lines in your driver, too. mctrl_gpio_free(dev, gpios): This will free the requested gpios in mctrl_gpio_init(). @@ -458,3 +460,9 @@ mctrl_gpio_set(gpios, mctrl): mctrl_gpio_get(gpios, mctrl): This will update mctrl with the gpios values. + +mctrl_gpio_enable_ms(gpios): + Enables irqs and handling of changes to the ms lines. + +mctrl_gpio_disable_ms(gpios): + Disables irqs and handling of changes to the ms lines. |