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drm/radeon/kms/pm: rework power management

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- Separate dynpm and profile based power management methods.  You can select the pm method
  by echoing the selected method ("dynpm" or "profile") to power_method in sysfs.
- Expose basic 4 profile in profile method
  "default" - default clocks
  "auto" - select between low and high based on ac/dc state
  "low" - DC, low power mode
  "high" - AC, performance mode
  The current base profile is "default", but it should switched to "auto" once we've tested
  on more systems.  Switching the state is a matter of echoing the requested profile to
  power_profile in sysfs.  The lowest power states are selected automatically when dpms turns
  the monitors off in all states but default.
- Remove dynamic fence-based reclocking for the moment.  We can revisit this later once we
  have basic pm in.
- Move pm init/fini to modesetting path.  pm is tightly coupled with display state.  Make sure
  display side is initialized before pm.
- Add pm suspend/resume functions to make sure pm state is properly reinitialized on resume.
- Remove dynpm module option.  It's now selectable via sysfs.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-05-07 15:10:16 -04:00
committed by Dave Airlie
parent d7311171c4
commit ce8f53709b
19 changed files with 787 additions and 516 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
drivers/gpu/drm/radeon/r100.c
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@@ -68,22 +68,21 @@ 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)
void r100_pm_get_dynpm_state(struct radeon_device *rdev)
{
int i;
rdev->pm.can_upclock = true;
rdev->pm.can_downclock = true;
rdev->pm.dynpm_can_upclock = true;
rdev->pm.dynpm_can_downclock = true;
switch (action) {
case PM_ACTION_MINIMUM:
switch (rdev->pm.dynpm_planned_action) {
case DYNPM_ACTION_MINIMUM:
rdev->pm.requested_power_state_index = 0;
rdev->pm.can_downclock = false;
rdev->pm.dynpm_can_downclock = false;
break;
case PM_ACTION_DOWNCLOCK:
case DYNPM_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;
rdev->pm.dynpm_can_downclock = false;
} else {
if (rdev->pm.active_crtc_count > 1) {
for (i = 0; i < rdev->pm.num_power_states; i++) {
@@ -108,10 +107,10 @@ void r100_get_power_state(struct radeon_device *rdev,
rdev->pm.requested_power_state_index++;
}
break;
case PM_ACTION_UPCLOCK:
case DYNPM_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;
rdev->pm.dynpm_can_upclock = false;
} else {
if (rdev->pm.active_crtc_count > 1) {
for (i = (rdev->pm.num_power_states - 1); i >= 0; i--) {
@@ -130,11 +129,11 @@ void r100_get_power_state(struct radeon_device *rdev,
rdev->pm.current_power_state_index + 1;
}
break;
case PM_ACTION_DEFAULT:
case DYNPM_ACTION_DEFAULT:
rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
rdev->pm.can_upclock = false;
rdev->pm.dynpm_can_upclock = false;
break;
case PM_ACTION_NONE:
case DYNPM_ACTION_NONE:
default:
DRM_ERROR("Requested mode for not defined action\n");
return;
@@ -151,77 +150,33 @@ void r100_get_power_state(struct radeon_device *rdev,
pcie_lanes);
}
void r100_set_power_state(struct radeon_device *rdev, bool static_switch)
void r100_pm_init_profile(struct radeon_device *rdev)
{
u32 sclk, mclk;
if (rdev->pm.current_power_state_index == rdev->pm.requested_power_state_index)
return;
if (radeon_gui_idle(rdev)) {
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;
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;
/* voltage, pcie lanes, etc.*/
radeon_pm_misc(rdev);
if (static_switch) {
radeon_pm_prepare(rdev);
/* set engine clock */
if (sclk != rdev->pm.current_sclk) {
radeon_set_engine_clock(rdev, sclk);
rdev->pm.current_sclk = sclk;
DRM_INFO("Setting: e: %d\n", sclk);
}
/* set memory clock */
if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
radeon_set_memory_clock(rdev, mclk);
rdev->pm.current_mclk = mclk;
DRM_INFO("Setting: m: %d\n", mclk);
}
radeon_pm_finish(rdev);
} else {
radeon_sync_with_vblank(rdev);
if (!radeon_pm_in_vbl(rdev))
return;
radeon_pm_prepare(rdev);
/* set engine clock */
if (sclk != rdev->pm.current_sclk) {
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);
}
/* set memory clock */
if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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);
}
radeon_pm_finish(rdev);
}
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("pm: GUI not idle!!!\n");
/* default */
rdev->pm.profiles[PM_PROFILE_DEFAULT_IDX].dpms_off_ps_idx = rdev->pm.default_power_state_index;
rdev->pm.profiles[PM_PROFILE_DEFAULT_IDX].dpms_on_ps_idx = rdev->pm.default_power_state_index;
rdev->pm.profiles[PM_PROFILE_DEFAULT_IDX].dpms_off_cm_idx = 0;
rdev->pm.profiles[PM_PROFILE_DEFAULT_IDX].dpms_on_cm_idx = 0;
/* low sh */
rdev->pm.profiles[PM_PROFILE_LOW_SH_IDX].dpms_off_ps_idx = 0;
rdev->pm.profiles[PM_PROFILE_LOW_SH_IDX].dpms_on_ps_idx = 0;
rdev->pm.profiles[PM_PROFILE_LOW_SH_IDX].dpms_off_cm_idx = 0;
rdev->pm.profiles[PM_PROFILE_LOW_SH_IDX].dpms_on_cm_idx = 0;
/* high sh */
rdev->pm.profiles[PM_PROFILE_HIGH_SH_IDX].dpms_off_ps_idx = 0;
rdev->pm.profiles[PM_PROFILE_HIGH_SH_IDX].dpms_on_ps_idx = rdev->pm.default_power_state_index;
rdev->pm.profiles[PM_PROFILE_HIGH_SH_IDX].dpms_off_cm_idx = 0;
rdev->pm.profiles[PM_PROFILE_HIGH_SH_IDX].dpms_on_cm_idx = 0;
/* low mh */
rdev->pm.profiles[PM_PROFILE_LOW_MH_IDX].dpms_off_ps_idx = 0;
rdev->pm.profiles[PM_PROFILE_LOW_MH_IDX].dpms_on_ps_idx = rdev->pm.default_power_state_index;
rdev->pm.profiles[PM_PROFILE_LOW_MH_IDX].dpms_off_cm_idx = 0;
rdev->pm.profiles[PM_PROFILE_LOW_MH_IDX].dpms_on_cm_idx = 0;
/* high mh */
rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_off_ps_idx = 0;
rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_ps_idx = rdev->pm.default_power_state_index;
rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_off_cm_idx = 0;
rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx = 0;
}
void r100_pm_misc(struct radeon_device *rdev)
@@ -3815,7 +3770,6 @@ int r100_suspend(struct radeon_device *rdev)
void r100_fini(struct radeon_device *rdev)
{
radeon_pm_fini(rdev);
r100_cp_fini(rdev);
r100_wb_fini(rdev);
r100_ib_fini(rdev);
@@ -3871,8 +3825,6 @@ int r100_init(struct radeon_device *rdev)
r100_errata(rdev);
/* Initialize clocks */
radeon_get_clock_info(rdev->ddev);
/* Initialize power management */
radeon_pm_init(rdev);
/* initialize AGP */
if (rdev->flags & RADEON_IS_AGP) {
r = radeon_agp_init(rdev);