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drm/radeon/dpm: adjust power state properly for UVD on SI

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There are some hardware issue with reclocking on SI when
UVD is active, so use a stable power state when UVD is
active.  Fixes possible hangs and performance issues when
using UVD on SI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-08-01 11:54:07 -04:00
parent b841ce7b41
commit 797f203f62
1 changed files with 32 additions and 12 deletions
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44
drivers/gpu/drm/radeon/si_dpm.c
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@ -2903,7 +2903,8 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
{
struct ni_ps *ps = ni_get_ps(rps);
struct radeon_clock_and_voltage_limits *max_limits;
bool disable_mclk_switching;
bool disable_mclk_switching = false;
bool disable_sclk_switching = false;
u32 mclk, sclk;
u16 vddc, vddci;
int i;
@ -2911,8 +2912,11 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
ni_dpm_vblank_too_short(rdev))
disable_mclk_switching = true;
else
disable_mclk_switching = false;
if (rps->vclk || rps->dclk) {
disable_mclk_switching = true;
disable_sclk_switching = true;
}
if (rdev->pm.dpm.ac_power)
max_limits = &rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac;
@ -2940,27 +2944,43 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
if (disable_mclk_switching) {
mclk = ps->performance_levels[ps->performance_level_count - 1].mclk;
sclk = ps->performance_levels[0].sclk;
vddc = ps->performance_levels[0].vddc;
vddci = ps->performance_levels[ps->performance_level_count - 1].vddci;
} else {
sclk = ps->performance_levels[0].sclk;
mclk = ps->performance_levels[0].mclk;
vddc = ps->performance_levels[0].vddc;
vddci = ps->performance_levels[0].vddci;
}
if (disable_sclk_switching) {
sclk = ps->performance_levels[ps->performance_level_count - 1].sclk;
vddc = ps->performance_levels[ps->performance_level_count - 1].vddc;
} else {
sclk = ps->performance_levels[0].sclk;
vddc = ps->performance_levels[0].vddc;
}
/* adjusted low state */
ps->performance_levels[0].sclk = sclk;
ps->performance_levels[0].mclk = mclk;
ps->performance_levels[0].vddc = vddc;
ps->performance_levels[0].vddci = vddci;
for (i = 1; i < ps->performance_level_count; i++) {
if (ps->performance_levels[i].sclk < ps->performance_levels[i - 1].sclk)
ps->performance_levels[i].sclk = ps->performance_levels[i - 1].sclk;
if (ps->performance_levels[i].vddc < ps->performance_levels[i - 1].vddc)
ps->performance_levels[i].vddc = ps->performance_levels[i - 1].vddc;
if (disable_sclk_switching) {
sclk = ps->performance_levels[0].sclk;
for (i = 1; i < ps->performance_level_count; i++) {
if (sclk < ps->performance_levels[i].sclk)
sclk = ps->performance_levels[i].sclk;
}
for (i = 0; i < ps->performance_level_count; i++) {
ps->performance_levels[i].sclk = sclk;
ps->performance_levels[i].vddc = vddc;
}
} else {
for (i = 1; i < ps->performance_level_count; i++) {
if (ps->performance_levels[i].sclk < ps->performance_levels[i - 1].sclk)
ps->performance_levels[i].sclk = ps->performance_levels[i - 1].sclk;
if (ps->performance_levels[i].vddc < ps->performance_levels[i - 1].vddc)
ps->performance_levels[i].vddc = ps->performance_levels[i - 1].vddc;
}
}
if (disable_mclk_switching) {