drm/amdgpu: add custom power policy support in sysfs

when cat pp_power_profile_mode on Vega10
NUM        MODE_NAME BUSY_SET_POINT FPS USE_RLC_BUSY MIN_ACTIVE_LEVEL
  0 3D_FULL_SCREEN :             70  60          1              3
  1   POWER_SAVING :             90  60          0              0
  2          VIDEO*:             70  60          0              0
  3             VR :             70  90          0              0
  4       COMPUTER :             30  60          0              6
  5         CUSTOM :              0   0          0              0

the result show all the profile mode we can support and custom mode.
user can echo the num(0-4) to pp_power_profile_mode to select the profile
mode or can echo "5 value value value value" to enter CUSTOM mode.
the four parameter is set_point/FPS/USER_RLC_BUSY/MIN_ACTIVE_LEVEL.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
index 8a8d09d..986f1d5 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
@@ -366,6 +366,14 @@ enum amdgpu_pcie_gen {
                        (adev)->powerplay.pp_handle, virtual_addr_low, \
                        virtual_addr_hi, mc_addr_low, mc_addr_hi, size)
 
+#define amdgpu_dpm_get_power_profile_mode(adev, buf) \
+               ((adev)->powerplay.pp_funcs->get_power_profile_mode(\
+                       (adev)->powerplay.pp_handle, buf))
+
+#define amdgpu_dpm_set_power_profile_mode(adev, parameter, size) \
+               ((adev)->powerplay.pp_funcs->set_power_profile_mode(\
+                       (adev)->powerplay.pp_handle, parameter, size))
+
 struct amdgpu_dpm {
        struct amdgpu_ps        *ps;
        /* number of valid power states */

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index e5ee7cf..662edca 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -584,6 +584,73 @@ fail:
        return count;
 }
 
+static ssize_t amdgpu_get_pp_power_profile_mode(struct device *dev,
+               struct device_attribute *attr,
+               char *buf)
+{
+       struct drm_device *ddev = dev_get_drvdata(dev);
+       struct amdgpu_device *adev = ddev->dev_private;
+
+       if (adev->powerplay.pp_funcs->get_power_profile_mode)
+               return amdgpu_dpm_get_power_profile_mode(adev, buf);
+
+       return snprintf(buf, PAGE_SIZE, "\n");
+}
+
+
+static ssize_t amdgpu_set_pp_power_profile_mode(struct device *dev,
+               struct device_attribute *attr,
+               const char *buf,
+               size_t count)
+{
+       int ret = 0xff;
+       struct drm_device *ddev = dev_get_drvdata(dev);
+       struct amdgpu_device *adev = ddev->dev_private;
+       uint32_t parameter_size = 0;
+       long parameter[64];
+       char *sub_str, buf_cpy[128];
+       char *tmp_str;
+       uint32_t i = 0;
+       char tmp[2];
+       long int profile_mode = 0;
+       const char delimiter[3] = {' ', '\n', '\0'};
+
+       tmp[0] = *(buf);
+       tmp[1] = '\0';
+       ret = kstrtol(tmp, 0, &profile_mode);
+       if (ret)
+               goto fail;
+
+       if (profile_mode == PP_SMC_POWER_PROFILE_CUSTOM) {
+               if (count < 2 || count > 127)
+                       return -EINVAL;
+               while (isspace(*++buf))
+                       i++;
+               memcpy(buf_cpy, buf, count-i);
+               tmp_str = buf_cpy;
+               while (tmp_str[0]) {
+                       sub_str = strsep(&tmp_str, delimiter);
+                       ret = kstrtol(sub_str, 0, &parameter[parameter_size]);
+                       if (ret) {
+                               count = -EINVAL;
+                               goto fail;
+                       }
+                       pr_info("value is %ld \n", parameter[parameter_size]);
+                       parameter_size++;
+                       while (isspace(*tmp_str))
+                               tmp_str++;
+               }
+       }
+       parameter[parameter_size] = profile_mode;
+       if (adev->powerplay.pp_funcs->set_power_profile_mode)
+               ret = amdgpu_dpm_set_power_profile_mode(adev, parameter, parameter_size);
+
+       if (!ret)
+               return count;
+fail:
+       return -EINVAL;
+}
+
 static ssize_t amdgpu_get_pp_power_profile(struct device *dev,
                char *buf, struct amd_pp_profile *query)
 {
@@ -772,7 +839,9 @@ static DEVICE_ATTR(pp_gfx_power_profile, S_IRUGO | S_IWUSR,
 static DEVICE_ATTR(pp_compute_power_profile, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_compute_power_profile,
                amdgpu_set_pp_compute_power_profile);
-
+static DEVICE_ATTR(pp_power_profile_mode, S_IRUGO | S_IWUSR,
+               amdgpu_get_pp_power_profile_mode,
+               amdgpu_set_pp_power_profile_mode);
 static ssize_t amdgpu_hwmon_show_temp(struct device *dev,
                                      struct device_attribute *attr,
                                      char *buf)
@@ -1405,6 +1474,14 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
                return ret;
        }
 
+       ret = device_create_file(adev->dev,
+                       &dev_attr_pp_power_profile_mode);
+       if (ret) {
+               DRM_ERROR("failed to create device file "
+                               "pp_power_profile_mode\n");
+               return ret;
+       }
+
        ret = amdgpu_debugfs_pm_init(adev);
        if (ret) {
                DRM_ERROR("Failed to register debugfs file for dpm!\n");
@@ -1440,6 +1517,8 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
                        &dev_attr_pp_gfx_power_profile);
        device_remove_file(adev->dev,
                        &dev_attr_pp_compute_power_profile);
+       device_remove_file(adev->dev,
+                       &dev_attr_pp_power_profile_mode);
 }
 
 void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)

diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
index 0f89d2a..1746180 100644 (file)
--- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
+++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
@@ -140,7 +140,15 @@ struct amd_pp_init {
        uint32_t feature_mask;
 };
 
-
+enum PP_SMC_POWER_PROFILE {
+       PP_SMC_POWER_PROFILE_FULLSCREEN3D = 0x0,
+       PP_SMC_POWER_PROFILE_POWERSAVING  = 0x1,
+       PP_SMC_POWER_PROFILE_VIDEO        = 0x2,
+       PP_SMC_POWER_PROFILE_VR           = 0x3,
+       PP_SMC_POWER_PROFILE_COMPUTE      = 0x4,
+       PP_SMC_POWER_PROFILE_CUSTOM       = 0x5,
+       PP_SMC_POWER_PROFILE_AUTO         = 0x6,
+};
 
 enum {
        PP_GROUP_UNKNOWN = 0,
@@ -289,6 +297,8 @@ struct amd_pm_funcs {
                                struct pp_display_clock_request *clock);
        int (*get_display_mode_validation_clocks)(void *handle,
                struct amd_pp_simple_clock_info *clocks);
+       int (*get_power_profile_mode)(void *handle, char *buf);
+       int (*set_power_profile_mode)(void *handle, long *input, uint32_t size);
 };
 
 #endif