diff options
| author |   Loic Poulain <loic.poulain@linaro.org> | 2018-09-04 17:18:55 +0200 |
|---|---|---|
| committer |   Peter Chen <peter.chen@nxp.com> | 2018-09-20 17:04:21 +0800 |
| commit | 16caf1fa37db4722d8d8c7bc26177279949d75a6 (patch) | |
| tree | a787b234e6b11249bd2ca209cf3a5391cf6f72f9 /drivers/usb/chipidea/core.c | |
| parent | usb: chipidea: imx: make MODULE_LICENCE and SPDX-identifier match (diff) | |
| download | linux-dev-16caf1fa37db4722d8d8c7bc26177279949d75a6.tar.xz linux-dev-16caf1fa37db4722d8d8c7bc26177279949d75a6.zip | |
usb: chipidea: Add dynamic pinctrl selection
Some hardware implementations require to configure pins differently
according to the USB role (host/device), this can be an update of the
pins routing or a simple GPIO value change.
This patch introduces new optional "host" and "device" pinctrls.
If these pinctrls are defined by the device, they are respectively
selected on host/device role start.
If a default pinctrl exist, it is restored on host/device role stop.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 85fc6db48e44..7bfcbb23c2a4 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -53,6 +53,7 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/pm_runtime.h> +#include <linux/pinctrl/consumer.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/otg.h> @@ -723,6 +724,24 @@ static int ci_get_platdata(struct device *dev, else cable->connected = false; } + + platdata->pctl = devm_pinctrl_get(dev); + if (!IS_ERR(platdata->pctl)) { + struct pinctrl_state *p; + + p = pinctrl_lookup_state(platdata->pctl, "default"); + if (!IS_ERR(p)) + platdata->pins_default = p; + + p = pinctrl_lookup_state(platdata->pctl, "host"); + if (!IS_ERR(p)) + platdata->pins_host = p; + + p = pinctrl_lookup_state(platdata->pctl, "device"); + if (!IS_ERR(p)) + platdata->pins_device = p; + } + return 0; } |