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drm/amd/powerplay: add sclk OD support on Tonga

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This implements sclk overdrive(OD) overclocking support for Tonga,
and the maximum overdrive percentage is 20.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2016-05-12 15:10:49 -04:00 committed by Alex Deucher
parent decb5fb6f2
commit 9ccd4e1346
1 changed files with 44 additions and 0 deletions
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44
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
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@ -6174,6 +6174,48 @@ static int tonga_print_clock_levels(struct pp_hwmgr *hwmgr,
return size; return size;
} }
static int tonga_get_sclk_od(struct pp_hwmgr *hwmgr)
{
struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
struct tonga_single_dpm_table *sclk_table = &(data->dpm_table.sclk_table);
struct tonga_single_dpm_table *golden_sclk_table =
&(data->golden_dpm_table.sclk_table);
int value;
value = (sclk_table->dpm_levels[sclk_table->count - 1].value -
golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value) *
100 /
golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value;
return value;
}
static int tonga_set_sclk_od(struct pp_hwmgr *hwmgr, uint32_t value)
{
struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
struct tonga_single_dpm_table *golden_sclk_table =
&(data->golden_dpm_table.sclk_table);
struct pp_power_state *ps;
struct tonga_power_state *tonga_ps;
if (value > 20)
value = 20;
ps = hwmgr->request_ps;
if (ps == NULL)
return -EINVAL;
tonga_ps = cast_phw_tonga_power_state(&ps->hardware);
tonga_ps->performance_levels[tonga_ps->performance_level_count - 1].engine_clock =
golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value *
value / 100 +
golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value;
return 0;
}
static const struct pp_hwmgr_func tonga_hwmgr_funcs = { static const struct pp_hwmgr_func tonga_hwmgr_funcs = {
.backend_init = &tonga_hwmgr_backend_init, .backend_init = &tonga_hwmgr_backend_init,
.backend_fini = &tonga_hwmgr_backend_fini, .backend_fini = &tonga_hwmgr_backend_fini,
@ -6216,6 +6258,8 @@ static const struct pp_hwmgr_func tonga_hwmgr_funcs = {
.set_pp_table = tonga_set_pp_table, .set_pp_table = tonga_set_pp_table,
.force_clock_level = tonga_force_clock_level, .force_clock_level = tonga_force_clock_level,
.print_clock_levels = tonga_print_clock_levels, .print_clock_levels = tonga_print_clock_levels,
.get_sclk_od = tonga_get_sclk_od,
.set_sclk_od = tonga_set_sclk_od,
}; };
int tonga_hwmgr_init(struct pp_hwmgr *hwmgr) int tonga_hwmgr_init(struct pp_hwmgr *hwmgr)