drm/radeon/dpm: add pre/post_set_power_state callbacks (6xx-eg)

For r6xx-evergreen, they are no-ops as they don't support
any dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/r600_dpm.c

@@ -662,6 +662,16 @@ void r600_stop_dpm(struct radeon_device *rdev)
 	r600_dynamicpm_enable(rdev, false);
 }
 
+int r600_dpm_pre_set_power_state(struct radeon_device *rdev)
+{
+	return 0;
+}
+
+void r600_dpm_post_set_power_state(struct radeon_device *rdev)
+{
+
+}
+
 bool r600_is_uvd_state(u32 class, u32 class2)
 {
 	if (class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)

drivers/gpu/drm/radeon/radeon_asic.c

@@ -1152,7 +1152,9 @@ static struct radeon_asic rv6xx_asic = {
 		.setup_asic = &rv6xx_setup_asic,
 		.enable = &rv6xx_dpm_enable,
 		.disable = &rv6xx_dpm_disable,
+		.pre_set_power_state = &r600_dpm_pre_set_power_state,
 		.set_power_state = &rv6xx_dpm_set_power_state,
+		.post_set_power_state = &r600_dpm_post_set_power_state,
 		.display_configuration_changed = &rv6xx_dpm_display_configuration_changed,
 		.fini = &rv6xx_dpm_fini,
 		.get_sclk = &rv6xx_dpm_get_sclk,
@@ -1259,7 +1261,9 @@ static struct radeon_asic rs780_asic = {
 		.setup_asic = &rs780_dpm_setup_asic,
 		.enable = &rs780_dpm_enable,
 		.disable = &rs780_dpm_disable,
+		.pre_set_power_state = &r600_dpm_pre_set_power_state,
 		.set_power_state = &rs780_dpm_set_power_state,
+		.post_set_power_state = &r600_dpm_post_set_power_state,
 		.display_configuration_changed = &rs780_dpm_display_configuration_changed,
 		.fini = &rs780_dpm_fini,
 		.get_sclk = &rs780_dpm_get_sclk,
@@ -1379,7 +1383,9 @@ static struct radeon_asic rv770_asic = {
 		.setup_asic = &rv770_dpm_setup_asic,
 		.enable = &rv770_dpm_enable,
 		.disable = &rv770_dpm_disable,
+		.pre_set_power_state = &r600_dpm_pre_set_power_state,
 		.set_power_state = &rv770_dpm_set_power_state,
+		.post_set_power_state = &r600_dpm_post_set_power_state,
 		.display_configuration_changed = &rv770_dpm_display_configuration_changed,
 		.fini = &rv770_dpm_fini,
 		.get_sclk = &rv770_dpm_get_sclk,
@@ -1499,7 +1505,9 @@ static struct radeon_asic evergreen_asic = {
 		.setup_asic = &cypress_dpm_setup_asic,
 		.enable = &cypress_dpm_enable,
 		.disable = &cypress_dpm_disable,
+		.pre_set_power_state = &r600_dpm_pre_set_power_state,
 		.set_power_state = &cypress_dpm_set_power_state,
+		.post_set_power_state = &r600_dpm_post_set_power_state,
 		.display_configuration_changed = &cypress_dpm_display_configuration_changed,
 		.fini = &cypress_dpm_fini,
 		.get_sclk = &rv770_dpm_get_sclk,

drivers/gpu/drm/radeon/radeon_asic.h

@@ -402,6 +402,8 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev);
 u32 r600_get_xclk(struct radeon_device *rdev);
 uint64_t r600_get_gpu_clock_counter(struct radeon_device *rdev);
 int rv6xx_get_temp(struct radeon_device *rdev);
+int r600_dpm_pre_set_power_state(struct radeon_device *rdev);
+void r600_dpm_post_set_power_state(struct radeon_device *rdev);
 /* rv6xx dpm */
 int rv6xx_dpm_init(struct radeon_device *rdev);
 int rv6xx_dpm_enable(struct radeon_device *rdev);