diff options
| author | Rex Zhu <Rex.Zhu@amd.com> | 2016-09-12 15:17:37 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-09-14 15:10:34 -0400 |
| commit | 8bea2527faa13dad21e4307af77b292a8e4ded2f (patch) | |
| tree | 0b0fc8d68f9e8b0a520f98c3e628d35104de2fab /drivers | |
| parent | 9597f40365760873bf7fc399bb5c40c3d9949359 (diff) | |
drm/amd/powerplay: add helper function to get voltage id in votage table
Acked-by: Christian König <christian.koenig@amd.com>
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 4 |
2 files changed, 23 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c index 1aacda7978e6..cb417c60321c 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c @@ -443,6 +443,27 @@ uint8_t phm_get_voltage_index( return i - 1; } +uint8_t phm_get_voltage_id(pp_atomctrl_voltage_table *voltage_table, + uint32_t voltage) +{ + uint8_t count = (uint8_t) (voltage_table->count); + uint8_t i = 0; + + PP_ASSERT_WITH_CODE((NULL != voltage_table), + "Voltage Table empty.", return 0;); + PP_ASSERT_WITH_CODE((0 != count), + "Voltage Table empty.", return 0;); + + for (i = 0; i < count; i++) { + /* find first voltage bigger than requested */ + if (voltage_table->entries[i].value >= voltage) + return i; + } + + /* voltage is bigger than max voltage in the table */ + return i - 1; +} + uint16_t phm_find_closest_vddci(struct pp_atomctrl_voltage_table *vddci_table, uint16_t vddci) { uint32_t i; diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h index 2a060f6c2041..aa4f5f32e522 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h @@ -685,6 +685,8 @@ extern void phm_trim_voltage_table_to_fit_state_table(uint32_t max_vol_steps, st extern int phm_reset_single_dpm_table(void *table, uint32_t count, int max); extern void phm_setup_pcie_table_entry(void *table, uint32_t index, uint32_t pcie_gen, uint32_t pcie_lanes); extern int32_t phm_get_dpm_level_enable_mask_value(void *table); +extern uint8_t phm_get_voltage_id(struct pp_atomctrl_voltage_table *voltage_table, + uint32_t voltage); extern uint8_t phm_get_voltage_index(struct phm_ppt_v1_voltage_lookup_table *lookup_table, uint16_t voltage); extern uint16_t phm_find_closest_vddci(struct pp_atomctrl_voltage_table *vddci_table, uint16_t vddci); extern int phm_find_boot_level(void *table, uint32_t value, uint32_t *boot_level); @@ -709,8 +711,6 @@ extern void phm_apply_dal_min_voltage_request(struct pp_hwmgr *hwmgr); PHM_FIELD_SHIFT(reg, field)) - - /* Operations on named fields. */ #define PHM_READ_FIELD(device, reg, field) \ |