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amdgpu/pm: Add emit_clock_levels calls

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(v4)
     Modifications to satisfy checkpatch --strict
   (v3)
     Rewrote patchset to order patches as (API, hw impl, usecase)

     - modified amdgpu_get_pp_od_clk_voltage to try
       amdgpu_dpm_emit_clock_levels and fallback to
       amdgpu_dpm_print_clock_levels if emit is not implemented.
     - modified amdgpu_get_pp_dpm_clock to try
       amdgpu_dpm_emit_clock_levels and fallback to
       amdgpu_dpm_print_clock_levels if emit is not implemented.
     - Newline is printed to buf if no output produced

 == Test ==
 LOGFILE=pp_clk.test.log
 AMDGPU_PCI_ADDR=`lspci -nn | grep "VGA\|Display" | cut -d " " -f 1`
 AMDGPU_HWMON=`ls -la /sys/class/hwmon | grep $AMDGPU_PCI_ADDR | awk '{print $9}'`
 HWMON_DIR=/sys/class/hwmon/${AMDGPU_HWMON}

 lspci -nn | grep "VGA\|Display"  > $LOGFILE
 FILES="pp_od_clk_voltage
 pp_dpm_sclk
 pp_dpm_mclk
 pp_dpm_pcie
 pp_dpm_socclk
 pp_dpm_fclk
 pp_dpm_dcefclk
 pp_dpm_vclk
 pp_dpm_dclk "

 for f in $FILES
 do
   echo === $f === >> $LOGFILE
   cat $HWMON_DIR/device/$f >> $LOGFILE
 done
 cat $LOGFILE

Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Darren Powell
2022-01-25 18:57:56 -05:00
committed by Alex Deucher
parent b06b48d7dd
commit c8cb19c7b2
1 changed files with 35 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/amd/pm/amdgpu_pm.c
View File

@@ -837,8 +837,17 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev,
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
ssize_t size;
int size = 0;
int ret;
enum pp_clock_type od_clocks[6] = {
OD_SCLK,
OD_MCLK,
OD_VDDC_CURVE,
OD_RANGE,
OD_VDDGFX_OFFSET,
OD_CCLK,
};
uint clk_index;
if (amdgpu_in_reset(adev))
return -EPERM;
@@ -851,16 +860,25 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev,
return ret;
}
size = amdgpu_dpm_print_clock_levels(adev, OD_SCLK, buf);
if (size > 0) {
size += amdgpu_dpm_print_clock_levels(adev, OD_MCLK, buf+size);
size += amdgpu_dpm_print_clock_levels(adev, OD_VDDC_CURVE, buf+size);
size += amdgpu_dpm_print_clock_levels(adev, OD_VDDGFX_OFFSET, buf+size);
size += amdgpu_dpm_print_clock_levels(adev, OD_RANGE, buf+size);
size += amdgpu_dpm_print_clock_levels(adev, OD_CCLK, buf+size);
} else {
size = sysfs_emit(buf, "\n");
for (clk_index = 0 ; clk_index < 6 ; clk_index++) {
ret = amdgpu_dpm_emit_clock_levels(adev, od_clocks[clk_index], buf, &size);
if (ret)
break;
}
if (ret == -ENOENT) {
size = amdgpu_dpm_print_clock_levels(adev, OD_SCLK, buf);
if (size > 0) {
size += amdgpu_dpm_print_clock_levels(adev, OD_MCLK, buf + size);
size += amdgpu_dpm_print_clock_levels(adev, OD_VDDC_CURVE, buf + size);
size += amdgpu_dpm_print_clock_levels(adev, OD_VDDGFX_OFFSET, buf + size);
size += amdgpu_dpm_print_clock_levels(adev, OD_RANGE, buf + size);
size += amdgpu_dpm_print_clock_levels(adev, OD_CCLK, buf + size);
}
}
if (size == 0)
size = sysfs_emit(buf, "\n");
pm_runtime_mark_last_busy(ddev->dev);
pm_runtime_put_autosuspend(ddev->dev);
@@ -985,8 +1003,8 @@ static ssize_t amdgpu_get_pp_dpm_clock(struct device *dev,
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
ssize_t size;
int ret;
int size = 0;
int ret = 0;
if (amdgpu_in_reset(adev))
return -EPERM;
@@ -999,8 +1017,11 @@ static ssize_t amdgpu_get_pp_dpm_clock(struct device *dev,
return ret;
}
size = amdgpu_dpm_print_clock_levels(adev, type, buf);
if (size <= 0)
ret = amdgpu_dpm_emit_clock_levels(adev, type, buf, &size);
if (ret == -ENOENT)
size = amdgpu_dpm_print_clock_levels(adev, type, buf);
if (size == 0)
size = sysfs_emit(buf, "\n");
pm_runtime_mark_last_busy(ddev->dev);