[PATCH 2/4] firmware: arm_scmi: imx: Introduce bbm_info hook

Peng Fan (OSS)
2025-01-20T02:26:38Z

From: Peng Fan <peng.fan@nxp.com>

Add bbm_info hook to let BBM protocol users could query the
how many RTCs and GPRs are supported by SCMI platform.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c | 15 +++++++++++++++
include/linux/scmi_imx_protocol.h | 2 ++
2 files changed, 17 insertions(+)

diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c
index 86fadfe8e3560b1cab5876a1029e38d91d938e2f..9d40ea817f4bdd2304c932bf3f52b7673a35eaff 100644
--- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c
+++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c
@@ -246,6 +246,20 @@ static const struct scmi_protocol_events scmi_imx_bbm_protocol_events = {
.num_events = ARRAY_SIZE(scmi_imx_bbm_events),
};

+static int scmi_imx_bbm_info(const struct scmi_protocol_handle *ph, u32 *nr_rtc,
+ u32 *nr_gpr)
+{
+ struct scmi_imx_bbm_info *pi = ph->get_priv(ph);
+
+ if (nr_rtc)
+ *nr_rtc = pi->nr_rtc;
+
+ if (nr_gpr)
+ *nr_gpr = pi->nr_gpr;
+
+ return 0;
+}
+
static int scmi_imx_bbm_rtc_time_set(const struct scmi_protocol_handle *ph,
u32 rtc_id, u64 sec)
{
@@ -351,6 +365,7 @@ static int scmi_imx_bbm_button_get(const struct scmi_protocol_handle *ph, u32 *s
}

static const struct scmi_imx_bbm_proto_ops scmi_imx_bbm_proto_ops = {
+ .bbm_info = scmi_imx_bbm_info,
.rtc_time_get = scmi_imx_bbm_rtc_time_get,
.rtc_time_set = scmi_imx_bbm_rtc_time_set,
.rtc_alarm_set = scmi_imx_bbm_rtc_alarm_set,
diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_protocol.h
index 53b356a26414279f4aaaa8287c32209ed1ad57b4..a0e7e99c4f43ba3e735f50b9eadbfa07a7803947 100644
--- a/include/linux/scmi_imx_protocol.h
+++ b/include/linux/scmi_imx_protocol.h
@@ -20,6 +20,8 @@
#define SCMI_IMX_SUBVENDOR "IMX"

struct scmi_imx_bbm_proto_ops {
+ int (*bbm_info)(const struct scmi_protocol_handle *ph, u32 *nr_rtc,
+ u32 *nr_gpr);
int (*rtc_time_set)(const struct scmi_protocol_handle *ph, u32 id,
uint64_t sec);
int (*rtc_time_get)(const struct scmi_protocol_handle *ph, u32 id,

--
2.37.1