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drm/radeon/kms/pm: add asic specific callbacks for getting power stat…
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…e (v2)

This also simplifies the code and enables reclocking with multiple heads
active by tracking whether the power states are single or multi-head
capable.

Eventually, we will want to select a power state based on external
factors (AC/DC state, user selection, etc.).

(v2) Update for evergreen

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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@agd5f @airlied
agd5f authored and airlied committed May 18, 2010
1 parent bae6b56 commit a48b9b4
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Showing 10 changed files with 413 additions and 246 deletions.
2 changes: 2 additions & 0 deletions drivers/gpu/drm/radeon/atombios_crtc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -251,6 +251,7 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
atombios_blank_crtc(crtc, ATOM_DISABLE);
drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
radeon_crtc_load_lut(crtc);
radeon_crtc->enabled = true;
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
Expand All @@ -260,6 +261,7 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
if (ASIC_IS_DCE3(rdev))
atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_DISABLE);
radeon_crtc->enabled = false;
break;
}

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140 changes: 116 additions & 24 deletions drivers/gpu/drm/radeon/r100.c
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Original file line number Diff line number Diff line change
Expand Up @@ -67,41 +67,133 @@ MODULE_FIRMWARE(FIRMWARE_R520);
* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
*/

void r100_get_power_state(struct radeon_device *rdev,
enum radeon_pm_action action)
{
int i;
rdev->pm.can_upclock = true;
rdev->pm.can_downclock = true;

switch (action) {
case PM_ACTION_MINIMUM:
rdev->pm.requested_power_state_index = 0;
rdev->pm.can_downclock = false;
break;
case PM_ACTION_DOWNCLOCK:
if (rdev->pm.current_power_state_index == 0) {
rdev->pm.requested_power_state_index = rdev->pm.current_power_state_index;
rdev->pm.can_downclock = false;
} else {
if (rdev->pm.active_crtc_count > 1) {
for (i = 0; i < rdev->pm.num_power_states; i++) {
if (rdev->pm.power_state[i].flags & RADEON_PM_SINGLE_DISPLAY_ONLY)
continue;
else if (i >= rdev->pm.current_power_state_index) {
rdev->pm.requested_power_state_index = rdev->pm.current_power_state_index;
break;
} else {
rdev->pm.requested_power_state_index = i;
break;
}
}
} else
rdev->pm.requested_power_state_index =
rdev->pm.current_power_state_index - 1;
}
break;
case PM_ACTION_UPCLOCK:
if (rdev->pm.current_power_state_index == (rdev->pm.num_power_states - 1)) {
rdev->pm.requested_power_state_index = rdev->pm.current_power_state_index;
rdev->pm.can_upclock = false;
} else {
if (rdev->pm.active_crtc_count > 1) {
for (i = (rdev->pm.num_power_states - 1); i >= 0; i--) {
if (rdev->pm.power_state[i].flags & RADEON_PM_SINGLE_DISPLAY_ONLY)
continue;
else if (i <= rdev->pm.current_power_state_index) {
rdev->pm.requested_power_state_index = rdev->pm.current_power_state_index;
break;
} else {
rdev->pm.requested_power_state_index = i;
break;
}
}
} else
rdev->pm.requested_power_state_index =
rdev->pm.current_power_state_index + 1;
}
break;
case PM_ACTION_NONE:
default:
DRM_ERROR("Requested mode for not defined action\n");
return;
}
/* only one clock mode per power state */
rdev->pm.requested_clock_mode_index = 0;

DRM_INFO("Requested: e: %d m: %d p: %d\n",
rdev->pm.power_state[rdev->pm.requested_power_state_index].
clock_info[rdev->pm.requested_clock_mode_index].sclk,
rdev->pm.power_state[rdev->pm.requested_power_state_index].
clock_info[rdev->pm.requested_clock_mode_index].mclk,
rdev->pm.power_state[rdev->pm.requested_power_state_index].
non_clock_info.pcie_lanes);
}

void r100_set_power_state(struct radeon_device *rdev)
{
/* if *_clock_mode are the same, *_power_state are as well */
if (rdev->pm.requested_clock_mode == rdev->pm.current_clock_mode)
u32 sclk, mclk;

if (rdev->pm.current_power_state_index == rdev->pm.requested_power_state_index)
return;

DRM_INFO("Setting: e: %d m: %d p: %d\n",
rdev->pm.requested_clock_mode->sclk,
rdev->pm.requested_clock_mode->mclk,
rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
if (radeon_gui_idle(rdev)) {

/* set pcie lanes */
/* TODO */
sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
clock_info[rdev->pm.requested_clock_mode_index].sclk;
if (sclk > rdev->clock.default_sclk)
sclk = rdev->clock.default_sclk;

/* set voltage */
/* TODO */
mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
clock_info[rdev->pm.requested_clock_mode_index].mclk;
if (mclk > rdev->clock.default_mclk)
mclk = rdev->clock.default_mclk;
/* don't change the mclk with multiple crtcs */
if (rdev->pm.active_crtc_count > 1)
mclk = rdev->clock.default_mclk;

/* set engine clock */
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_engine_clock(rdev, rdev->pm.requested_clock_mode->sclk);
radeon_pm_debug_check_in_vbl(rdev, true);
/* set pcie lanes */
/* TODO */

/* set voltage */
/* TODO */

/* set engine clock */
if (sclk != rdev->pm.current_sclk) {
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_engine_clock(rdev, sclk);
radeon_pm_debug_check_in_vbl(rdev, true);
rdev->pm.current_sclk = sclk;
DRM_INFO("Setting: e: %d\n", sclk);
}

#if 0
/* set memory clock */
if (rdev->asic->set_memory_clock) {
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_memory_clock(rdev, rdev->pm.requested_clock_mode->mclk);
radeon_pm_debug_check_in_vbl(rdev, true);
}
/* set memory clock */
if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_memory_clock(rdev, mclk);
radeon_pm_debug_check_in_vbl(rdev, true);
rdev->pm.current_mclk = mclk;
DRM_INFO("Setting: m: %d\n", mclk);
}
#endif

rdev->pm.current_power_state = rdev->pm.requested_power_state;
rdev->pm.current_clock_mode = rdev->pm.requested_clock_mode;
rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
} else
DRM_INFO("GUI not idle!!!\n");
}

bool r100_gui_idle(struct radeon_device *rdev)
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