leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

thermal/drivers/int340x: processor_thermal: Export additional attributes

Browse Source 
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
This commit is contained in:
Srinivas Pandruvada 2021-05-16 23:14:41 -07:00 committed by Daniel Lezcano
parent fb5a6ec803
commit 5d6fbc96bd
1 changed files with 55 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
View File

@ -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
};