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charset=us-ascii Content-Disposition: inline In-Reply-To: <20250627-sm-misc-api-v1-v1-2-2b99481fe825@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250627_054856_187147_60F518BC X-CRM114-Status: GOOD ( 19.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jun 27, 2025 at 02:03:45PM +0800, Peng Fan wrote: > MISC protocol supports discovering the System Manager(SM) build > information including build commit, build time and etc. Add the API > for user to retrieve the information from SM. > Hi, > Signed-off-by: Peng Fan > --- > .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c | 35 ++++++++++++++++++++++ > include/linux/scmi_imx_protocol.h | 12 ++++++++ > 2 files changed, 47 insertions(+) > > diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c > index a8915d3b4df518719d56bfff38922625ad9b70f6..1b24d070c6f4856b92f515fcdba5836fd6498ce6 100644 > --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c > +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c > @@ -25,6 +25,7 @@ > enum scmi_imx_misc_protocol_cmd { > SCMI_IMX_MISC_CTRL_SET = 0x3, > SCMI_IMX_MISC_CTRL_GET = 0x4, > + SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6, > SCMI_IMX_MISC_CTRL_NOTIFY = 0x8, > }; > > @@ -65,6 +66,13 @@ struct scmi_imx_misc_ctrl_get_out { > __le32 val[]; > }; > > +struct scmi_imx_misc_buildinfo_out { > + __le32 buildnum; > + __le32 buildcommit; > + u8 builddate[MISC_MAX_BUILDDATE]; > + u8 buildtime[MISC_MAX_BUILDTIME]; > +}; > + > static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph, > struct scmi_imx_misc_info *mi) > { > @@ -272,10 +280,37 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph, > return ret; > } > > +static int scmi_imx_discover_build_info(const struct scmi_protocol_handle *ph, > + struct scmi_imx_misc_system_info *info) > +{ > + struct scmi_imx_misc_buildinfo_out *out; > + struct scmi_xfer *t; > + int ret; > + > + ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0, > + sizeof(*out), &t); > + if (ret) > + return ret; > + > + ret = ph->xops->do_xfer(ph, t); > + if (!ret) { > + out = t->rx.buf; > + info->buildnum = le32_to_cpu(out->buildnum); > + info->buildcommit = le32_to_cpu(out->buildcommit); > + strscpy(info->date, out->builddate, MISC_MAX_BUILDDATE); > + strscpy(info->time, out->buildtime, MISC_MAX_BUILDTIME); > + } > + > + ph->xops->xfer_put(ph, t); > + > + return ret; > +} > + > static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = { > .misc_ctrl_set = scmi_imx_misc_ctrl_set, > .misc_ctrl_get = scmi_imx_misc_ctrl_get, > .misc_ctrl_req_notify = scmi_imx_misc_ctrl_notify, > + .misc_discover_build_info = scmi_imx_discover_build_info, > }; > > static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph) > diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_protocol.h > index 27bd372cbfb142b6acb0b1cf4b82f061529d0d45..826402dfe6f4d3b9e6d2e93868d6699f989e9bcc 100644 > --- a/include/linux/scmi_imx_protocol.h > +++ b/include/linux/scmi_imx_protocol.h > @@ -52,6 +52,16 @@ struct scmi_imx_misc_ctrl_notify_report { > unsigned int flags; > }; > > +#define MISC_MAX_BUILDDATE 16 > +#define MISC_MAX_BUILDTIME 16 > + > +struct scmi_imx_misc_system_info { > + u32 buildnum; > + u32 buildcommit; > + u8 date[MISC_MAX_BUILDDATE]; > + u8 time[MISC_MAX_BUILDTIME]; > +}; > + > struct scmi_imx_misc_proto_ops { > int (*misc_ctrl_set)(const struct scmi_protocol_handle *ph, u32 id, > u32 num, u32 *val); > @@ -59,6 +69,8 @@ struct scmi_imx_misc_proto_ops { > u32 *num, u32 *val); > int (*misc_ctrl_req_notify)(const struct scmi_protocol_handle *ph, > u32 ctrl_id, u32 evt_id, u32 flags); > + int (*misc_discover_build_info)(const struct scmi_protocol_handle *ph, > + struct scmi_imx_misc_system_info *info); > }; LGTM. Reviewed-by: Cristian Marussi Thanks, Cristian