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| author | hersen wu <hersenxs.wu@amd.com> | 2019-05-21 15:02:23 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-06-21 18:59:32 -0500 |
| commit | f4b3295fa228eef5fe1a0a736f945d757eaaaed1 (patch) | |
| tree | 0bc85c3725c0e12d3f9f879d2a1625177c9f66fb /drivers/gpu/drm/amd/powerplay/navi10_ppt.c | |
| parent | 26e2b581482d69053eff27d355c04e182fb6b662 (diff) | |
| download | linux-f4b3295fa228eef5fe1a0a736f945d757eaaaed1.tar.bz2 | |
drm/amd/powerplay: add interface to get uclk dpm table
dc needs get uclk dpm table for bandwidth calculation
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/navi10_ppt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c index b16ee40da7c8..5b4332392cf5 100644 --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c @@ -1248,6 +1248,35 @@ static int navi10_read_sensor(struct smu_context *smu, return ret; } +static int navi10_get_uclk_dpm_states(struct smu_context *smu, uint32_t *clocks_in_khz, uint32_t *num_states) +{ + uint32_t num_discrete_levels = 0; + uint16_t *dpm_levels = NULL; + uint16_t i = 0; + struct smu_table_context *table_context = &smu->smu_table; + PPTable_t *driver_ppt = NULL; + + if (!clocks_in_khz || !num_states || !table_context->driver_pptable) + return -EINVAL; + + driver_ppt = table_context->driver_pptable; + num_discrete_levels = driver_ppt->DpmDescriptor[PPCLK_UCLK].NumDiscreteLevels; + dpm_levels = driver_ppt->FreqTableUclk; + + if (num_discrete_levels == 0 || dpm_levels == NULL) + return -EINVAL; + + *num_states = num_discrete_levels; + for (i = 0; i < num_discrete_levels; i++) { + /* convert to khz */ + *clocks_in_khz = (*dpm_levels) * 1000; + clocks_in_khz++; + dpm_levels++; + } + + return 0; +} + static const struct pptable_funcs navi10_ppt_funcs = { .tables_init = navi10_tables_init, .alloc_dpm_context = navi10_allocate_dpm_context, @@ -1281,6 +1310,7 @@ static const struct pptable_funcs navi10_ppt_funcs = { .get_profiling_clk_mask = navi10_get_profiling_clk_mask, .set_watermarks_table = navi10_set_watermarks_table, .read_sensor = navi10_read_sensor, + .get_uclk_dpm_states = navi10_get_uclk_dpm_states, }; void navi10_set_ppt_funcs(struct smu_context *smu) |