Messages in this thread | | | Date | Thu, 9 Apr 2020 17:19:42 -0700 | From | Prashant Malani <> | Subject | Re: [PATCH v2 1/3] platform/chrome: typec: Use notifier for updates |
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Hi Enric,
On Thu, Apr 09, 2020 at 05:08:19PM -0700, Prashant Malani wrote: > Register a listener for the cros-usbpd-notifier, and update port state > when a notification comes in. > > Signed-off-by: Prashant Malani <pmalani@chromium.org> > --- > > Changes in v2: > - Added Kconfig dependency to CROS_USBPD_NOTIFY. > - Fixed spacing error. > - Removed superfluous devm_warn() call. > > drivers/platform/chrome/Kconfig | 1 + > drivers/platform/chrome/cros_ec_typec.c | 23 +++++++++++++++++++++++ > 2 files changed, 24 insertions(+) > > diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig > index 03ea5129ed0c3..67fc9c567ae6c 100644 > --- a/drivers/platform/chrome/Kconfig > +++ b/drivers/platform/chrome/Kconfig > @@ -218,6 +218,7 @@ config CROS_EC_TYPEC > tristate "ChromeOS EC Type-C Connector Control" > depends on MFD_CROS_EC_DEV && TYPEC > default MFD_CROS_EC_DEV > + depends on CROS_USBPD_NOTIFY
Woops, looks like I got the ordering wrong here. My apologies, I will send a new version of the series out. > help > If you say Y here, you get support for accessing Type C connector > information from the Chrome OS EC. > diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c > index 874269c070739..d444dd7422a2a 100644 > --- a/drivers/platform/chrome/cros_ec_typec.c > +++ b/drivers/platform/chrome/cros_ec_typec.c > @@ -11,6 +11,7 @@ > #include <linux/of.h> > #include <linux/platform_data/cros_ec_commands.h> > #include <linux/platform_data/cros_ec_proto.h> > +#include <linux/platform_data/cros_usbpd_notify.h> > #include <linux/platform_device.h> > #include <linux/usb/typec.h> > > @@ -26,6 +27,7 @@ struct cros_typec_data { > struct typec_port *ports[EC_USB_PD_MAX_PORTS]; > /* Initial capabilities for each port. */ > struct typec_capability *caps[EC_USB_PD_MAX_PORTS]; > + struct notifier_block nb; > }; > > static int cros_typec_parse_port_props(struct typec_capability *cap, > @@ -272,6 +274,22 @@ static int cros_typec_get_cmd_version(struct cros_typec_data *typec) > return 0; > } > > +static int cros_ec_typec_event(struct notifier_block *nb, > + unsigned long host_event, void *_notify) > +{ > + struct cros_typec_data *typec = container_of(nb, struct cros_typec_data, > + nb); > + int ret, i; > + > + for (i = 0; i < typec->num_ports; i++) { > + ret = cros_typec_port_update(typec, i); > + if (ret < 0) > + dev_warn(typec->dev, "Update failed for port: %d\n", i); > + } > + > + return NOTIFY_OK; > +} > + > #ifdef CONFIG_ACPI > static const struct acpi_device_id cros_typec_acpi_id[] = { > { "GOOG0014", 0 }, > @@ -332,6 +350,11 @@ static int cros_typec_probe(struct platform_device *pdev) > goto unregister_ports; > } > > + typec->nb.notifier_call = cros_ec_typec_event; > + ret = cros_usbpd_register_notify(&typec->nb); > + if (ret < 0) > + goto unregister_ports; > + > return 0; > > unregister_ports: > -- > 2.26.0.110.g2183baf09c-goog >
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