diff options
| author | Rex Zhu <Rex.Zhu@amd.com> | 2018-01-03 12:24:36 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 22:17:15 +0300 |
| commit | 9bd2bae13d8ce279465a0acda60abc3d961a94dc (patch) | |
| tree | 2a2c09c1e5e278c98f653c019410b0f78c6bbb55 /drivers/gpu | |
| parent | 64b9342f31363eee93d0d3e1fa87622fe2929732 (diff) | |
| download | linux-9bd2bae13d8ce279465a0acda60abc3d961a94dc.tar.xz | |
drm/amd/pp: Add a helper to convert VID to voltage value
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')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c index 654cb11bdf65..e35bdc5bafb7 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c @@ -60,6 +60,11 @@ uint8_t convert_to_vid(uint16_t vddc) return (uint8_t) ((6200 - (vddc * VOLTAGE_SCALE)) / 25); } +uint16_t convert_to_vddc(uint8_t vid) +{ + return (uint16_t) ((6200 - (vid * 25)) / VOLTAGE_SCALE); +} + static int phm_get_pci_bus_devfn(struct pp_hwmgr *hwmgr, struct cgs_system_info *sys_info) { diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h index 384a4cb71b93..f37f211e7624 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h @@ -42,6 +42,7 @@ struct pp_atomctrl_voltage_table; #define VOLTAGE_SCALE 4 uint8_t convert_to_vid(uint16_t vddc); +uint16_t convert_to_vddc(uint8_t vid); enum DISPLAY_GAP { DISPLAY_GAP_VBLANK_OR_WM = 0, /* Wait for vblank or MCHG watermark. */ |