Hi > -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx > [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of Heikki Krogerus > Sent: 2018年2月26日 22:06 > To: Jun Li <jun.li@xxxxxxx> > Cc: gregkh@xxxxxxxxxxxxxxxxxxx; robh+dt@xxxxxxxxxx; linux@xxxxxxxxxxxx; > a.hajda@xxxxxxxxxxx; mark.rutland@xxxxxxx; yueyao@xxxxxxxxxx; > Peter Chen <peter.chen@xxxxxxx>; garsilva@xxxxxxxxxxxxxx; > o_leveque@xxxxxxxxx; shufan_lee@xxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx> > Subject: Re: [PATCH v2 03/12] staging: typec: tcpci: support port config > passed via dt > > Hi, > > On Mon, Feb 26, 2018 at 07:49:10PM +0800, Li Jun wrote: > > User can define the typec port properties in tcpci node to setup the > > port config. > > > > Signed-off-by: Li Jun <jun.li@xxxxxxx> > > --- > > Changes for v2: > > - Use infra APIs to get sink and source config. > > - Improve the error message. > > > > drivers/staging/typec/tcpci.c | 70 > ++++++++++++++++++++++++++++++++++++++----- > > include/linux/usb/tcpm.h | 6 ++-- > > 2 files changed, 66 insertions(+), 10 deletions(-) > > > > diff --git a/drivers/staging/typec/tcpci.c > > b/drivers/staging/typec/tcpci.c index b6abaf7..be6ed16 100644 > > --- a/drivers/staging/typec/tcpci.c > > +++ b/drivers/staging/typec/tcpci.c > > @@ -426,17 +426,73 @@ static const struct regmap_config > tcpci_regmap_config = { > > .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */ }; > > > > -static const struct tcpc_config tcpci_tcpc_config = { > > - .type = TYPEC_PORT_DFP, > > - .default_role = TYPEC_SINK, > > -}; > > - > > +/* Populate struct tcpc_config from device-tree */ > > static int tcpci_parse_config(struct tcpci *tcpci) { > > + struct tcpc_config *tcfg; > > + struct device_node *child; > > + int ret = -EINVAL; > > + > > tcpci->controls_vbus = true; /* XXX */ > > > > - /* TODO: Populate struct tcpc_config from ACPI/device-tree */ > > - tcpci->tcpc.config = &tcpci_tcpc_config; > > + tcpci->tcpc.config = devm_kzalloc(tcpci->dev, sizeof(*tcfg), > > + GFP_KERNEL); > > + if (!tcpci->tcpc.config) > > + return -ENOMEM; > > + > > + tcfg = tcpci->tcpc.config; > > + > > + child = of_get_child_by_name(tcpci->dev->of_node, "connector"); > > + if (!child) { > > + dev_err(tcpci->dev, "failed to get connector node.\n"); > > + return -EINVAL; > > + } > > Why do you need separate child node for the connector? You will always > have only one connector per tcpc, i.e. the tcpci already represents the > connector and all its capabilities. > This is my original idea, my understanding is Rob expects those properties should apply for a common usb connector node[1], that way I need add a child node for it, sorry I didn't make the dt-binding patches come first in this series, please see patch 10,11. [1] https://patchwork.kernel.org/patch/10231447/ thanks Li Jun > > Thanks, > > -- > heikki > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in the > body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fvger > .kernel.org%2Fmajordomo-info.html&data=02%7C01%7Cjun.li%40nxp.com > %7Ce39f8cdcff664858d9ea08d57d221b7a%7C686ea1d3bc2b4c6fa92cd99c5 > c301635%7C0%7C1%7C636552507819862496&sdata=SgStkXiqwV7RIfXcReB > vIZpOyLEXKNhvH%2FB6p4KXxsA%3D&reserved=0 ?韬{.n?????%??檩??w?{.n????z谵{???塄}?财??j:+v?? ? ???2??璀??摺?囤??z夸z罐?+?????w棹f
