From f4b3295fa228eef5fe1a0a736f945d757eaaaed1 Mon Sep 17 00:00:00 2001 From: hersen wu Date: Tue, 21 May 2019 15:02:23 -0400 Subject: drm/amd/powerplay: add interface to get uclk dpm table dc needs get uclk dpm table for bandwidth calculation Signed-off-by: hersen wu Acked-by: Alex Deucher Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'drivers/gpu/drm/amd/powerplay/navi10_ppt.c') 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) -- cgit v1.2.3