diff options
author | Huang Rui <ray.huang@amd.com> | 2016-07-12 09:14:12 +0300 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2016-07-15 19:33:41 +0300 |
commit | e68d46484ff453c5aaf215da07f57a2cc29967f9 (patch) | |
tree | 2a658a9c2e5a92ee19b3e9c7f74b703e8557ef5c /drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c | |
parent | 0a552a3296a558a25aff9238d3d0af3387ae1bd0 (diff) | |
download | linux-e68d46484ff453c5aaf215da07f57a2cc29967f9.tar.xz |
drm/amd/powerplay: add atomctrl_get_voltage_evv function in ppatomctrl
The atomctrl_get_voltage_evv function will be used on iceland HW
manager.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c')
-rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c index ac942ab8db5b..23b1ac96c514 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c @@ -1080,6 +1080,52 @@ int atomctrl_get_voltage_evv_on_sclk( } /** + * atomctrl_get_voltage_evv gets voltage via call to ATOM COMMAND table. + * @param hwmgr input: pointer to hwManager + * @param virtual_voltage_id input: voltage id which match per voltage DPM state: 0xff01, 0xff02.. 0xff08 + * @param voltage output: real voltage level in unit of mv + */ +int atomctrl_get_voltage_evv(struct pp_hwmgr *hwmgr, + uint16_t virtual_voltage_id, + uint16_t *voltage) +{ + int result; + int entry_id; + GET_VOLTAGE_INFO_INPUT_PARAMETER_V1_2 get_voltage_info_param_space; + + /* search for leakage voltage ID 0xff01 ~ 0xff08 and sckl */ + for (entry_id = 0; entry_id < hwmgr->dyn_state.vddc_dependency_on_sclk->count; entry_id++) { + if (hwmgr->dyn_state.vddc_dependency_on_sclk->entries[entry_id].v == virtual_voltage_id) { + /* found */ + break; + } + } + + PP_ASSERT_WITH_CODE(entry_id < hwmgr->dyn_state.vddc_dependency_on_sclk->count, + "Can't find requested voltage id in vddc_dependency_on_sclk table!", + return -EINVAL; + ); + + get_voltage_info_param_space.ucVoltageType = VOLTAGE_TYPE_VDDC; + get_voltage_info_param_space.ucVoltageMode = ATOM_GET_VOLTAGE_EVV_VOLTAGE; + get_voltage_info_param_space.usVoltageLevel = virtual_voltage_id; + get_voltage_info_param_space.ulSCLKFreq = + cpu_to_le32(hwmgr->dyn_state.vddc_dependency_on_sclk->entries[entry_id].clk); + + result = cgs_atom_exec_cmd_table(hwmgr->device, + GetIndexIntoMasterTable(COMMAND, GetVoltageInfo), + &get_voltage_info_param_space); + + if (0 != result) + return result; + + *voltage = le16_to_cpu(((GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_2 *) + (&get_voltage_info_param_space))->usVoltageLevel); + + return result; +} + +/** * Get the mpll reference clock in 10KHz */ uint32_t atomctrl_get_mpll_reference_clock(struct pp_hwmgr *hwmgr) |