Merge branch 'thermal-intel'

ecc26ba4 · Rafael J. Wysocki <[email protected]> · 2026-04-08 12:31:06 +02:00

Merge updates of Intel thermal drivers for 7.1:

 - Replace cpumask_weight() in intel_hfi_offline() with cpumask_empty()
   which is generally more efficient (Yury Norov)

 - Add support for reading DDR data rate from PCI config space on Nova
   Lake platforms to the int340x thermal driver (Srinivas Pandruvada)

* thermal-intel:
  thermal: intel: hfi: use cpumask_empty() in intel_hfi_offline()
  thermal: intel: int340x: Read DDR data rate for Nova Lake

Commit: ecc26ba41ce254479232c750f96968abddbbb6ab
Parents: d33e89d1 · d8d3e49b

Merge commit. Changes below are compared with the first parent: d33e89d1.

Changes

2 files changed · +21 −6

File	Status	Add	Del	Content
drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c	modified	+20	−5	View file
drivers/thermal/intel/intel_hfi.c	modified	+1	−1	View file

drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c

View file

diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
index 314fbc1..1a7e134 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
@@ -402,17 +402,31 @@ static ssize_t rfi_restriction_show(struct device *dev,
 	return sysfs_emit(buf, "%llu\n", resp);
 }
 
+ /* ddr_data_rate */
+static const struct mmio_reg nvl_ddr_data_rate_reg = { 1, 0xE0, 10, 0x3FF, 2};
+
+static const struct mmio_reg *ddr_data_rate_reg;
+
 static ssize_t ddr_data_rate_show(struct device *dev,
 				  struct device_attribute *attr,
 				  char *buf)
 {
-	u16 id = 0x0107;
 	u64 resp;
-	int ret;
 
-	ret = processor_thermal_send_mbox_read_cmd(to_pci_dev(dev), id, &resp);
-	if (ret)
-		return ret;
+	if (ddr_data_rate_reg) {
+		u16 reg_val;
+
+		pci_read_config_word(to_pci_dev(dev), ddr_data_rate_reg->offset, &reg_val);
+		resp = (reg_val >> ddr_data_rate_reg->shift) & ddr_data_rate_reg->mask;
+		resp = (resp * 3333) / 100;
+	} else {
+		const u16 id = 0x0107;
+		int ret;
+
+		ret = processor_thermal_send_mbox_read_cmd(to_pci_dev(dev), id, &resp);
+		if (ret)
+			return ret;
+	}
 
 	return sysfs_emit(buf, "%llu\n", resp);
 }
@@ -461,6 +475,7 @@ int proc_thermal_rfim_add(struct pci_dev *pdev, struct proc_thermal_device *proc
 		case PCI_DEVICE_ID_INTEL_NVL_H_THERMAL:
 		case PCI_DEVICE_ID_INTEL_NVL_S_THERMAL:
 			dlvr_mmio_regs_table = nvl_dlvr_mmio_regs;
+			ddr_data_rate_reg = &nvl_ddr_data_rate_reg;
 			break;
 		default:
 			dlvr_mmio_regs_table = dlvr_mmio_regs;

drivers/thermal/intel/intel_hfi.c

View file

diff --git a/drivers/thermal/intel/intel_hfi.c b/drivers/thermal/intel/intel_hfi.c
index 1a1a95b..8c4ae75 100644
--- a/drivers/thermal/intel/intel_hfi.c
+++ b/drivers/thermal/intel/intel_hfi.c
@@ -526,7 +526,7 @@ void intel_hfi_offline(unsigned int cpu)
 	mutex_lock(&hfi_instance_lock);
 	cpumask_clear_cpu(cpu, hfi_instance->cpus);
 
-	if (!cpumask_weight(hfi_instance->cpus))
+	if (cpumask_empty(hfi_instance->cpus))
 		hfi_disable();
 
 	mutex_unlock(&hfi_instance_lock);