linux-kernel - [PATCH 2/4] firmware: arm_scmi: imx: Introduce bbm

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Message-Id: <20250120-rtc-v1-2-08c50830bac9@nxp.com>
Date: Mon, 20 Jan 2025 10:25:34 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 imx@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 linux-rtc@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 2/4] firmware: arm_scmi: imx: Introduce bbm_info hook

From: Peng Fan <peng.fan@....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@....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