From cc798b105070a190e2b793d30d0c59aa00299861 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 4 Sep 2025 18:40:43 +0800 Subject: [PATCH] firmware: arm_scmi: imx: Discover MISC build info from the system manager MISC protocol can report System Manager (SM) build information (commit, build date/time, etc.). Discover those information at the init time. If the firmware doesn't support it, ignore -EOPNOTSUPP. Reviewed-by: Cristian Marussi Signed-off-by: Peng Fan Message-Id: <20250904-sm-misc-api-v1-v4-2-0bf10eaabdf1@nxp.com> Signed-off-by: Sudeep Holla --- .../arm_scmi/vendors/imx/imx-sm-misc.c | 41 +++++++++++++++++++ 1 file changed, 41 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 a8915d3b4df51..be34e4a8d738b 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_BUILD_INFO = 0x6, SCMI_IMX_MISC_CTRL_NOTIFY = 0x8, }; @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out { __le32 val[]; }; +struct scmi_imx_misc_buildinfo_out { + __le32 buildnum; + __le32 buildcommit; +#define MISC_MAX_BUILDDATE 16 + u8 builddate[MISC_MAX_BUILDDATE]; +#define MISC_MAX_BUILDTIME 16 + u8 buildtime[MISC_MAX_BUILDTIME]; +}; + static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph, struct scmi_imx_misc_info *mi) { @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph, return ret; } +static int scmi_imx_misc_build_info_discover(const struct scmi_protocol_handle *ph) +{ + char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME]; + struct scmi_imx_misc_buildinfo_out *out; + struct scmi_xfer *t; + int ret; + + ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILD_INFO, 0, + sizeof(*out), &t); + if (ret) + return ret; + + ret = ph->xops->do_xfer(ph, t); + if (!ret) { + out = t->rx.buf; + strscpy(date, out->builddate, MISC_MAX_BUILDDATE); + strscpy(time, out->buildtime, MISC_MAX_BUILDTIME); + dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n", + le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit), + date, time); + } + + 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, @@ -299,6 +336,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph) if (ret) return ret; + ret = scmi_imx_misc_build_info_discover(ph); + if (ret && ret != -EOPNOTSUPP) + return ret; + return ph->set_priv(ph, minfo, version); } -- 2.47.3