cail_pll_read    2012 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c 	atom_card_info->pll_read = cail_pll_read;
cail_pll_read     996 drivers/gpu/drm/radeon/radeon_device.c 	atom_card_info->pll_read = cail_pll_read;