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/host.c | |
| parent | 1f06072cd22fbbd2e961b49c8e4fa9f7a0c120d6 (diff) | |
| download | linux-16caf1fa37db4722d8d8c7bc26177279949d75a6.tar.gz | |
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/host.c')
| -rw-r--r-- | drivers/usb/chipidea/host.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 4638d9b066be..d858a82c4f44 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -13,6 +13,7 @@ #include <linux/usb/hcd.h> #include <linux/usb/chipidea.h> #include <linux/regulator/consumer.h> +#include <linux/pinctrl/consumer.h> #include "../host/ehci.h" @@ -153,6 +154,10 @@ static int host_start(struct ci_hdrc *ci) } } + if (ci->platdata->pins_host) + pinctrl_select_state(ci->platdata->pctl, + ci->platdata->pins_host); + ret = usb_add_hcd(hcd, 0, 0); if (ret) { goto disable_reg; @@ -197,6 +202,10 @@ static void host_stop(struct ci_hdrc *ci) } ci->hcd = NULL; ci->otg.host = NULL; + + if (ci->platdata->pins_host && ci->platdata->pins_default) + pinctrl_select_state(ci->platdata->pctl, + ci->platdata->pins_default); } |