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drm/radeon/dpm: add pre/post_set_power_state callback (BTC)

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This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2013-01-16 14:17:23 -05:00
parent a284c48ae7
commit e8a9539fa0
4 changed files with 83 additions and 13 deletions
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81
drivers/gpu/drm/radeon/btc_dpm.c
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@@ -2062,18 +2062,12 @@ static void btc_init_stutter_mode(struct radeon_device *rdev)
static void btc_apply_state_adjust_rules(struct radeon_device *rdev,
struct radeon_ps *rps)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct rv7xx_ps *ps = rv770_get_ps(rps);
struct radeon_clock_and_voltage_limits *max_limits;
bool disable_mclk_switching;
u32 mclk, sclk;
u16 vddc, vddci;
/* point to the hw copy since this function will modify the ps */
eg_pi->hw_ps = *ps;
rdev->pm.dpm.hw_ps.ps_priv = &eg_pi->hw_ps;
ps = &eg_pi->hw_ps;
if (rdev->pm.dpm.new_active_crtc_count > 1)
disable_mclk_switching = true;
else
@@ -2222,6 +2216,28 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev,
ps->high.flags &= ~ATOM_PPLIB_R600_FLAGS_PCIEGEN2;
}
static void btc_update_current_ps(struct radeon_device *rdev,
struct radeon_ps *rps)
{
struct rv7xx_ps *new_ps = rv770_get_ps(rps);
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
eg_pi->current_rps = *rps;
eg_pi->current_ps = *new_ps;
eg_pi->current_rps.ps_priv = &eg_pi->current_ps;
}
static void btc_update_requested_ps(struct radeon_device *rdev,
struct radeon_ps *rps)
{
struct rv7xx_ps *new_ps = rv770_get_ps(rps);
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
eg_pi->requested_rps = *rps;
eg_pi->requested_ps = *new_ps;
eg_pi->requested_rps.ps_priv = &eg_pi->requested_ps;
}
void btc_dpm_reset_asic(struct radeon_device *rdev)
{
rv770_restrict_performance_levels_before_switch(rdev);
@@ -2230,13 +2246,24 @@ void btc_dpm_reset_asic(struct radeon_device *rdev)
rv770_set_boot_state(rdev);
}
int btc_dpm_pre_set_power_state(struct radeon_device *rdev)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct radeon_ps requested_ps = *rdev->pm.dpm.requested_ps;
struct radeon_ps *new_ps = &requested_ps;
btc_update_requested_ps(rdev, new_ps);
btc_apply_state_adjust_rules(rdev, &eg_pi->requested_rps);
return 0;
}
int btc_dpm_set_power_state(struct radeon_device *rdev)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
btc_apply_state_adjust_rules(rdev, new_ps);
struct radeon_ps *new_ps = &eg_pi->requested_rps;
struct radeon_ps *old_ps = &eg_pi->current_rps;
btc_disable_ulv(rdev);
btc_set_boot_state_timing(rdev);
@@ -2274,6 +2301,14 @@ int btc_dpm_set_power_state(struct radeon_device *rdev)
return 0;
}
void btc_dpm_post_set_power_state(struct radeon_device *rdev)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct radeon_ps *new_ps = &eg_pi->requested_rps;
btc_update_current_ps(rdev, new_ps);
}
int btc_dpm_enable(struct radeon_device *rdev)
{
struct rv7xx_power_info *pi = rv770_get_pi(rdev);
@@ -2369,6 +2404,8 @@ int btc_dpm_enable(struct radeon_device *rdev)
btc_init_stutter_mode(rdev);
btc_update_current_ps(rdev, rdev->pm.dpm.boot_ps);
return 0;
};
@@ -2407,6 +2444,8 @@ void btc_dpm_disable(struct radeon_device *rdev)
btc_reset_to_default(rdev);
btc_stop_smc(rdev);
cypress_enable_spread_spectrum(rdev, false);
btc_update_current_ps(rdev, rdev->pm.dpm.boot_ps);
}
void btc_dpm_setup_asic(struct radeon_device *rdev)
@@ -2591,3 +2630,25 @@ void btc_dpm_fini(struct radeon_device *rdev)
kfree(rdev->pm.dpm.priv);
r600_free_extended_power_table(rdev);
}
u32 btc_dpm_get_sclk(struct radeon_device *rdev, bool low)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct rv7xx_ps *requested_state = rv770_get_ps(&eg_pi->requested_rps);
if (low)
return requested_state->low.sclk;
else
return requested_state->high.sclk;
}
u32 btc_dpm_get_mclk(struct radeon_device *rdev, bool low)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
struct rv7xx_ps *requested_state = rv770_get_ps(&eg_pi->requested_rps);
if (low)
return requested_state->low.mclk;
else
return requested_state->high.mclk;
}