@@ -190,6 +190,59 @@ static DEVICE_ATTR_RO(ddr_data_rate_point_2);
static DEVICE_ATTR_RO(ddr_data_rate_point_3);
static DEVICE_ATTR_RW(rfi_disable);
+static ssize_t rfi_restriction_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u16 cmd_id = 0x0008;
+ u32 cmd_resp;
+ u32 input;
+ int ret;
+
+ ret = kstrtou32(buf, 10, &input);
+ if (ret)
+ return ret;
+
+ ret = processor_thermal_send_mbox_cmd(to_pci_dev(dev), cmd_id, input, &cmd_resp);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t rfi_restriction_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ u16 cmd_id = 0x0007;
+ u32 cmd_resp;
+ int ret;
+
+ ret = processor_thermal_send_mbox_cmd(to_pci_dev(dev), cmd_id, 0, &cmd_resp);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%u\n", cmd_resp);
+}
+
+static ssize_t ddr_data_rate_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ u16 cmd_id = 0x0107;
+ u32 cmd_resp;
+ int ret;
+
+ ret = processor_thermal_send_mbox_cmd(to_pci_dev(dev), cmd_id, 0, &cmd_resp);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%u\n", cmd_resp);
+}
+
+static DEVICE_ATTR_RW(rfi_restriction);
+static DEVICE_ATTR_RO(ddr_data_rate);
+
static struct attribute *dvfs_attrs[] = {
&dev_attr_rfi_restriction_run_busy.attr,
&dev_attr_rfi_restriction_err_code.attr,
@@ -199,6 +252,8 @@ static struct attribute *dvfs_attrs[] = {
&dev_attr_ddr_data_rate_point_2.attr,
&dev_attr_ddr_data_rate_point_3.attr,
&dev_attr_rfi_disable.attr,
+ &dev_attr_ddr_data_rate.attr,
+ &dev_attr_rfi_restriction.attr,
NULL
};
Export additional attributes: ddr_data_rate (RO) : Show current DDR (Double Data Rate) data rate. rfi_restriction (RW) : Show or set current state for RFI (Radio Frequency Interference) protection. These attributes use mailbox commands to get/set information. Here command codes are: 0x0007: Read RFI restriction 0x0107: Read DDR data rate 0x0008: Write RFI restriction Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- .../int340x_thermal/processor_thermal_rfim.c | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+)