drm/radeon/kms: add atom helper functions for dpm (v3)

				   bool strobe_mode,

				   struct atom_clock_dividers *dividers);

void radeon_atom_set_voltage(struct radeon_device *rdev, u16 voltage_level, u8 voltage_type);

int radeon_atom_get_voltage_gpio_settings(struct radeon_device *rdev,

					  u16 voltage_level, u8 voltage_type,

					  u32 *gpio_value, u32 *gpio_mask);

void radeon_atom_set_engine_dram_timings(struct radeon_device *rdev,

					 u32 eng_clock, u32 mem_clock);

int radeon_atom_get_voltage_step(struct radeon_device *rdev,

				 u8 voltage_type, u16 *voltage_step);

int radeon_atom_round_to_true_voltage(struct radeon_device *rdev,

				      u8 voltage_type,

				      u16 nominal_voltage,

				      u16 *true_voltage);

int radeon_atom_get_min_voltage(struct radeon_device *rdev,

				u8 voltage_type, u16 *min_voltage);

int radeon_atom_get_max_voltage(struct radeon_device *rdev,

				u8 voltage_type, u16 *max_voltage);

int radeon_atom_get_voltage_table(struct radeon_device *rdev,

				  u8 voltage_type,

				  struct atom_voltage_table *voltage_table);

bool radeon_atom_is_voltage_gpio(struct radeon_device *rdev, u8 voltage_type);

void radeon_atom_update_memory_dll(struct radeon_device *rdev,

				   u32 mem_clock);

void radeon_atom_set_ac_timing(struct radeon_device *rdev,

			       u32 mem_clock);

int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,

				  u8 module_index,

				  struct atom_mc_reg_table *reg_table);

int radeon_atom_get_memory_info(struct radeon_device *rdev,

				u8 module_index, struct atom_memory_info *mem_info);

int radeon_atom_get_mclk_range_table(struct radeon_device *rdev,

				     bool gddr5, u8 module_index,

				     struct atom_memory_clock_range_table *mclk_range_table);

int radeon_atom_get_max_vddc(struct radeon_device *rdev, u8 voltage_type,

			     u16 voltage_id, u16 *voltage);

void rs690_pm_info(struct radeon_device *rdev);

extern void evergreen_tiling_fields(unsigned tiling_flags, unsigned *bankw,

				    unsigned *bankh, unsigned *mtaspect,