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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2021-05-16 23:14:41 -0700
committerDaniel Lezcano <daniel.lezcano@linaro.org>2021-06-11 11:55:47 +0200
commit5d6fbc96bd36cfec7bbc0578ad3986affdeb70de (patch)
treed26cbfc109b13f4f9121ccb0eab0e2e224994e07 /drivers/thermal
parentfb5a6ec80367bcccb659a421850d757a5a81767a (diff)
thermal/drivers/int340x: processor_thermal: Export additional attributes
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> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210517061441.1921901-3-srinivas.pandruvada@linux.intel.com
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
index aef993a813e2..2b8a3235d518 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
@@ -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
};