From: Dinh Nguyen <dinh.nguyen@xxxxxxxxxxxxxxx>
Add support for the hardware monitor driver to use the service driver
the ability to read voltage and temperature from the SDM.
Signed-off-by: Dinh Nguyen <dinh.nguyen@xxxxxxxxxxxxxxx>
---
drivers/firmware/stratix10-svc.c | 18 +++++++++-
include/linux/firmware/intel/stratix10-smc.h | 34 +++++++++++++++++++
.../firmware/intel/stratix10-svc-client.h | 6 ++++
3 files changed, 57 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index bde1f543f529..cc1b8b441c37 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -340,6 +340,8 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
case COMMAND_RSU_MAX_RETRY:
case COMMAND_RSU_DCMF_STATUS:
case COMMAND_FIRMWARE_VERSION:
+ case COMMAND_HWMON_READTEMP:
+ case COMMAND_HWMON_READVOLT:
cb_data->status = BIT(SVC_STATUS_OK);
cb_data->kaddr1 = &res.a1;
break;
@@ -517,7 +519,17 @@ static int svc_normal_to_secure_thread(void *data)
a1 = (unsigned long)pdata->paddr;
a2 = 0;
break;
-
+ /* for HWMON */
+ case COMMAND_HWMON_READTEMP:
+ a0 = INTEL_SIP_SMC_HWMON_READTEMP;
+ a1 = pdata->arg[0];
+ a2 = 0;
+ break;
+ case COMMAND_HWMON_READVOLT:
+ a0 = INTEL_SIP_SMC_HWMON_READVOLT;
+ a1 = pdata->arg[0];
+ a2 = 0;
+ break;
/* for polling */
case COMMAND_POLL_SERVICE_STATUS:
a0 = INTEL_SIP_SMC_SERVICE_COMPLETED;
@@ -1182,6 +1194,10 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
chans[2].name = SVC_CLIENT_FCS;
spin_lock_init(&chans[2].lock);
+ chans[3].ctrl = controller;
+ chans[3].name = SVC_CLIENT_HWMON;
+ spin_lock_init(&chans[3].lock);
+
list_add_tail(&controller->node, &svc_ctrl);
platform_set_drvdata(pdev, controller);
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index a718f853d457..b944ec4b2b2f 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -595,4 +595,38 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_FCS_GET_PROVISION_DATA \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_GET_PROVISION_DATA)
+/**
+ * Request INTEL_SIP_SMC_HWMON_READTEMP
+ * Sync call to request temperature
+ *
+ * Call register usage:
+ * a0 Temperature Channel
+ * a1-a7 not used
+ *
+ * Return status
+ * a0 INTEL_SIP_SMC_STATUS_OK
+ * a1 Temperature Value
+ * a2-a3 not used
+ */
+#define INTEL_SIP_SMC_FUNCID_HWMON_READTEMP 32
+#define INTEL_SIP_SMC_HWMON_READTEMP \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_HWMON_READTEMP)
+
+/**
+ * Request INTEL_SIP_SMC_HWMON_READVOLT
+ * Sync call to request voltage
+ *
+ * Call register usage:
+ * a0 Voltage Channel
+ * a1-a7 not used
+ *
+ * Return status
+ * a0 INTEL_SIP_SMC_STATUS_OK
+ * a1 Voltage Value
+ * a2-a3 not used
+ */
+#define INTEL_SIP_SMC_FUNCID_HWMON_READVOLT 33
+#define INTEL_SIP_SMC_HWMON_READVOLT \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_HWMON_READVOLT)
+
#endif
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 0c16037fd08d..343970dcc2d2 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -11,10 +11,12 @@
*
* fpga: for FPGA configuration
* rsu: for remote status update
+ * hwmon: for hardware monitoring (voltage and temperature)
*/
#define SVC_CLIENT_FPGA "fpga"
#define SVC_CLIENT_RSU "rsu"
#define SVC_CLIENT_FCS "fcs"
+#define SVC_CLIENT_HWMON "hwmon"
/*
* Status of the sent command, in bit number
@@ -70,6 +72,7 @@
#define SVC_RSU_REQUEST_TIMEOUT_MS 300
#define SVC_FCS_REQUEST_TIMEOUT_MS 2000
#define SVC_COMPLETED_TIMEOUT_MS 30000
+#define SVC_HWMON_REQUEST_TIMEOUT_MS 300
struct stratix10_svc_chan;
@@ -164,6 +167,9 @@ enum stratix10_svc_command_code {
COMMAND_FCS_RANDOM_NUMBER_GEN,
/* for general status poll */
COMMAND_POLL_SERVICE_STATUS = 40,
+ /* for HWMON */
+ COMMAND_HWMON_READTEMP,
+ COMMAND_HWMON_READVOLT,
/* Non-mailbox SMC Call */
COMMAND_SMC_SVC_VERSION = 200,
};
--
2.40.0
