diff options
| author | Rex Zhu <Rex.Zhu@amd.com> | 2016-09-12 10:17:37 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-09-14 22:10:34 +0300 |
| commit | 8bea2527faa13dad21e4307af77b292a8e4ded2f (patch) | |
| tree | 0b0fc8d68f9e8b0a520f98c3e628d35104de2fab /drivers/gpu/drm/amd/powerplay/hwmgr | |
| parent | 9597f40365760873bf7fc399bb5c40c3d9949359 (diff) | |
| download | linux-8bea2527faa13dad21e4307af77b292a8e4ded2f.tar.xz | |
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/gpu/drm/amd/powerplay/hwmgr')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 21 |
1 files changed, 21 insertions, 0 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; |