Re: [PATCH] drm/radeon: Remove limitation on clock speeds

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On Tue, Sep 23, 2014 at 1:08 AM, Alexandre Demers
<alexandre.f.demers@xxxxxxxxx> wrote:
> Typo: this should be "Tested on kernel 3.17-rc6 on..."
>
> Alexandre Demers
>
>
> On 23/09/14 12:42 AM, Alexandre Demers wrote:
>>
>> Now that vddci has been fixed for dpm, we can let the GPUs
>> use their maximum values when not using the reference ones.
>>
>> Fixes bug 69721: Can't reach maximum memory speed (or core
>> speed) when using dpm=1 on r600g on cards not sticking to
>> reference board
>>
>> Tested on kernel 3.17-rc7 on a cayman gpu.
>>
>> Signed-off-by: Alexandre Demers <alexandre.f.demers@xxxxxxxxx>

Thanks for testing this.  I'd rather split this up into multiple
patches in case we need to revert it on a specific asic family if
problems arise.  How about the attached patches?

Alex

>>
>> ---
>>   drivers/gpu/drm/radeon/btc_dpm.c | 51
>> ----------------------------------------
>>   drivers/gpu/drm/radeon/btc_dpm.h |  2 --
>>   drivers/gpu/drm/radeon/ci_dpm.c  | 26 --------------------
>>   drivers/gpu/drm/radeon/ni_dpm.c  | 24 -------------------
>>   drivers/gpu/drm/radeon/si_dpm.c  | 24 -------------------
>>   5 files changed, 127 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/btc_dpm.c
>> b/drivers/gpu/drm/radeon/btc_dpm.c
>> index f81d7ca..300d971 100644
>> --- a/drivers/gpu/drm/radeon/btc_dpm.c
>> +++ b/drivers/gpu/drm/radeon/btc_dpm.c
>> @@ -1170,23 +1170,6 @@ static const struct radeon_blacklist_clocks
>> btc_blacklist_clocks[] =
>>           { 25000, 30000, RADEON_SCLK_UP }
>>   };
>>   -void btc_get_max_clock_from_voltage_dependency_table(struct
>> radeon_clock_voltage_dependency_table *table,
>> -                                                    u32 *max_clock)
>> -{
>> -       u32 i, clock = 0;
>> -
>> -       if ((table == NULL) || (table->count == 0)) {
>> -               *max_clock = clock;
>> -               return;
>> -       }
>> -
>> -       for (i = 0; i < table->count; i++) {
>> -               if (clock < table->entries[i].clk)
>> -                       clock = table->entries[i].clk;
>> -       }
>> -       *max_clock = clock;
>> -}
>> -
>>   void btc_apply_voltage_dependency_rules(struct
>> radeon_clock_voltage_dependency_table *table,
>>                                         u32 clock, u16 max_voltage, u16
>> *voltage)
>>   {
>> @@ -2099,7 +2082,6 @@ static void btc_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>         bool disable_mclk_switching;
>>         u32 mclk, sclk;
>>         u16 vddc, vddci;
>> -       u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
>>         if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
>>             btc_dpm_vblank_too_short(rdev))
>> @@ -2141,39 +2123,6 @@ static void btc_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>                         ps->low.vddci = max_limits->vddci;
>>         }
>>   -     /* limit clocks to max supported clocks based on voltage
>> dependency tables */
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
>> -                                                       &max_sclk_vddc);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
>> -                                                       &max_mclk_vddci);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
>> -                                                       &max_mclk_vddc);
>> -
>> -       if (max_sclk_vddc) {
>> -               if (ps->low.sclk > max_sclk_vddc)
>> -                       ps->low.sclk = max_sclk_vddc;
>> -               if (ps->medium.sclk > max_sclk_vddc)
>> -                       ps->medium.sclk = max_sclk_vddc;
>> -               if (ps->high.sclk > max_sclk_vddc)
>> -                       ps->high.sclk = max_sclk_vddc;
>> -       }
>> -       if (max_mclk_vddci) {
>> -               if (ps->low.mclk > max_mclk_vddci)
>> -                       ps->low.mclk = max_mclk_vddci;
>> -               if (ps->medium.mclk > max_mclk_vddci)
>> -                       ps->medium.mclk = max_mclk_vddci;
>> -               if (ps->high.mclk > max_mclk_vddci)
>> -                       ps->high.mclk = max_mclk_vddci;
>> -       }
>> -       if (max_mclk_vddc) {
>> -               if (ps->low.mclk > max_mclk_vddc)
>> -                       ps->low.mclk = max_mclk_vddc;
>> -               if (ps->medium.mclk > max_mclk_vddc)
>> -                       ps->medium.mclk = max_mclk_vddc;
>> -               if (ps->high.mclk > max_mclk_vddc)
>> -                       ps->high.mclk = max_mclk_vddc;
>> -       }
>> -
>>         /* XXX validate the min clocks required for display */
>>         if (disable_mclk_switching) {
>> diff --git a/drivers/gpu/drm/radeon/btc_dpm.h
>> b/drivers/gpu/drm/radeon/btc_dpm.h
>> index 3b6f12b..1a15e0e 100644
>> --- a/drivers/gpu/drm/radeon/btc_dpm.h
>> +++ b/drivers/gpu/drm/radeon/btc_dpm.h
>> @@ -46,8 +46,6 @@ void btc_adjust_clock_combinations(struct radeon_device
>> *rdev,
>>                                    struct rv7xx_pl *pl);
>>   void btc_apply_voltage_dependency_rules(struct
>> radeon_clock_voltage_dependency_table *table,
>>                                         u32 clock, u16 max_voltage, u16
>> *voltage);
>> -void btc_get_max_clock_from_voltage_dependency_table(struct
>> radeon_clock_voltage_dependency_table *table,
>> -                                                    u32 *max_clock);
>>   void btc_apply_voltage_delta_rules(struct radeon_device *rdev,
>>                                    u16 max_vddc, u16 max_vddci,
>>                                    u16 *vddc, u16 *vddci);
>> diff --git a/drivers/gpu/drm/radeon/ci_dpm.c
>> b/drivers/gpu/drm/radeon/ci_dpm.c
>> index d416bb2..d199be3 100644
>> --- a/drivers/gpu/drm/radeon/ci_dpm.c
>> +++ b/drivers/gpu/drm/radeon/ci_dpm.c
>> @@ -162,8 +162,6 @@ static const struct ci_pt_config_reg didt_config_ci[]
>> =
>>   };
>>     extern u8 rv770_get_memory_module_index(struct radeon_device *rdev);
>> -extern void btc_get_max_clock_from_voltage_dependency_table(struct
>> radeon_clock_voltage_dependency_table *table,
>> -                                                           u32
>> *max_clock);
>>   extern int ni_copy_and_switch_arb_sets(struct radeon_device *rdev,
>>                                        u32 arb_freq_src, u32
>> arb_freq_dest);
>>   extern u8 si_get_ddr3_mclk_frequency_ratio(u32 memory_clock);
>> @@ -748,7 +746,6 @@ static void ci_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>         struct radeon_clock_and_voltage_limits *max_limits;
>>         bool disable_mclk_switching;
>>         u32 sclk, mclk;
>> -       u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
>>         int i;
>>         if (rps->vce_active) {
>> @@ -784,29 +781,6 @@ static void ci_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>                 }
>>         }
>>   -     /* limit clocks to max supported clocks based on voltage
>> dependency tables */
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
>> -                                                       &max_sclk_vddc);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
>> -                                                       &max_mclk_vddci);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
>> -                                                       &max_mclk_vddc);
>> -
>> -       for (i = 0; i < ps->performance_level_count; i++) {
>> -               if (max_sclk_vddc) {
>> -                       if (ps->performance_levels[i].sclk >
>> max_sclk_vddc)
>> -                               ps->performance_levels[i].sclk =
>> max_sclk_vddc;
>> -               }
>> -               if (max_mclk_vddci) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddci)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddci;
>> -               }
>> -               if (max_mclk_vddc) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddc)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddc;
>> -               }
>> -       }
>> -
>>         /* XXX validate the min clocks required for display */
>>         if (disable_mclk_switching) {
>> diff --git a/drivers/gpu/drm/radeon/ni_dpm.c
>> b/drivers/gpu/drm/radeon/ni_dpm.c
>> index 01fc488..715b181 100644
>> --- a/drivers/gpu/drm/radeon/ni_dpm.c
>> +++ b/drivers/gpu/drm/radeon/ni_dpm.c
>> @@ -789,7 +789,6 @@ static void ni_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>         bool disable_mclk_switching;
>>         u32 mclk;
>>         u16 vddci;
>> -       u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
>>         int i;
>>         if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
>> @@ -816,29 +815,6 @@ static void ni_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>                 }
>>         }
>>   -     /* limit clocks to max supported clocks based on voltage
>> dependency tables */
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
>> -                                                       &max_sclk_vddc);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
>> -                                                       &max_mclk_vddci);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
>> -                                                       &max_mclk_vddc);
>> -
>> -       for (i = 0; i < ps->performance_level_count; i++) {
>> -               if (max_sclk_vddc) {
>> -                       if (ps->performance_levels[i].sclk >
>> max_sclk_vddc)
>> -                               ps->performance_levels[i].sclk =
>> max_sclk_vddc;
>> -               }
>> -               if (max_mclk_vddci) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddci)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddci;
>> -               }
>> -               if (max_mclk_vddc) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddc)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddc;
>> -               }
>> -       }
>> -
>>         /* XXX validate the min clocks required for display */
>>         /* adjust low state */
>> diff --git a/drivers/gpu/drm/radeon/si_dpm.c
>> b/drivers/gpu/drm/radeon/si_dpm.c
>> index 70e61ff..9e4d5d7 100644
>> --- a/drivers/gpu/drm/radeon/si_dpm.c
>> +++ b/drivers/gpu/drm/radeon/si_dpm.c
>> @@ -2916,7 +2916,6 @@ static void si_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>         bool disable_sclk_switching = false;
>>         u32 mclk, sclk;
>>         u16 vddc, vddci;
>> -       u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
>>         int i;
>>         if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
>> @@ -2950,29 +2949,6 @@ static void si_apply_state_adjust_rules(struct
>> radeon_device *rdev,
>>                 }
>>         }
>>   -     /* limit clocks to max supported clocks based on voltage
>> dependency tables */
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
>> -                                                       &max_sclk_vddc);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
>> -                                                       &max_mclk_vddci);
>> -
>> btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
>> -                                                       &max_mclk_vddc);
>> -
>> -       for (i = 0; i < ps->performance_level_count; i++) {
>> -               if (max_sclk_vddc) {
>> -                       if (ps->performance_levels[i].sclk >
>> max_sclk_vddc)
>> -                               ps->performance_levels[i].sclk =
>> max_sclk_vddc;
>> -               }
>> -               if (max_mclk_vddci) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddci)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddci;
>> -               }
>> -               if (max_mclk_vddc) {
>> -                       if (ps->performance_levels[i].mclk >
>> max_mclk_vddc)
>> -                               ps->performance_levels[i].mclk =
>> max_mclk_vddc;
>> -               }
>> -       }
>> -
>>         /* XXX validate the min clocks required for display */
>>         if (disable_mclk_switching) {
>
>
From 305a121dcf5945596267f3b551c9508e25f496bd Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 23 Sep 2014 09:45:32 -0400
Subject: [PATCH 5/5] drm/radeon: drop
 btc_get_max_clock_from_voltage_dependency_table

It's no longer used now that the underlying bugs are fixed.

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/radeon/btc_dpm.c | 17 -----------------
 drivers/gpu/drm/radeon/btc_dpm.h |  2 --
 2 files changed, 19 deletions(-)

diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c
index b718160..300d971 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -1170,23 +1170,6 @@ static const struct radeon_blacklist_clocks btc_blacklist_clocks[] =
         { 25000, 30000, RADEON_SCLK_UP }
 };
 
-void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
-						     u32 *max_clock)
-{
-	u32 i, clock = 0;
-
-	if ((table == NULL) || (table->count == 0)) {
-		*max_clock = clock;
-		return;
-	}
-
-	for (i = 0; i < table->count; i++) {
-		if (clock < table->entries[i].clk)
-			clock = table->entries[i].clk;
-	}
-	*max_clock = clock;
-}
-
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
 					u32 clock, u16 max_voltage, u16 *voltage)
 {
diff --git a/drivers/gpu/drm/radeon/btc_dpm.h b/drivers/gpu/drm/radeon/btc_dpm.h
index 3b6f12b..1a15e0e 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.h
+++ b/drivers/gpu/drm/radeon/btc_dpm.h
@@ -46,8 +46,6 @@ void btc_adjust_clock_combinations(struct radeon_device *rdev,
 				   struct rv7xx_pl *pl);
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
 					u32 clock, u16 max_voltage, u16 *voltage);
-void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
-						     u32 *max_clock);
 void btc_apply_voltage_delta_rules(struct radeon_device *rdev,
 				   u16 max_vddc, u16 max_vddci,
 				   u16 *vddc, u16 *vddci);
-- 
1.8.3.1

From a44a36933794490360094bcd9b95918a1dafff48 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 23 Sep 2014 09:42:09 -0400
Subject: [PATCH 4/5] drm/radeon/dpm: drop clk/voltage dependency filters for
 BTC

No longer needed now that the underlying bug was fixed in
e07929810f0a19ddd756558290c7d72827cbfcd9
(drm/radeon/dpm: fix typo in vddci setup for eg/btc).

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69721

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/radeon/btc_dpm.c | 34 ----------------------------------
 1 file changed, 34 deletions(-)

diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c
index f81d7ca..b718160 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -2099,7 +2099,6 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev,
 	bool disable_mclk_switching;
 	u32 mclk, sclk;
 	u16 vddc, vddci;
-	u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
 
 	if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
 	    btc_dpm_vblank_too_short(rdev))
@@ -2141,39 +2140,6 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev,
 			ps->low.vddci = max_limits->vddci;
 	}
 
-	/* limit clocks to max supported clocks based on voltage dependency tables */
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
-							&max_sclk_vddc);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
-							&max_mclk_vddci);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
-							&max_mclk_vddc);
-
-	if (max_sclk_vddc) {
-		if (ps->low.sclk > max_sclk_vddc)
-			ps->low.sclk = max_sclk_vddc;
-		if (ps->medium.sclk > max_sclk_vddc)
-			ps->medium.sclk = max_sclk_vddc;
-		if (ps->high.sclk > max_sclk_vddc)
-			ps->high.sclk = max_sclk_vddc;
-	}
-	if (max_mclk_vddci) {
-		if (ps->low.mclk > max_mclk_vddci)
-			ps->low.mclk = max_mclk_vddci;
-		if (ps->medium.mclk > max_mclk_vddci)
-			ps->medium.mclk = max_mclk_vddci;
-		if (ps->high.mclk > max_mclk_vddci)
-			ps->high.mclk = max_mclk_vddci;
-	}
-	if (max_mclk_vddc) {
-		if (ps->low.mclk > max_mclk_vddc)
-			ps->low.mclk = max_mclk_vddc;
-		if (ps->medium.mclk > max_mclk_vddc)
-			ps->medium.mclk = max_mclk_vddc;
-		if (ps->high.mclk > max_mclk_vddc)
-			ps->high.mclk = max_mclk_vddc;
-	}
-
 	/* XXX validate the min clocks required for display */
 
 	if (disable_mclk_switching) {
-- 
1.8.3.1

From 42bea3c776f9c5b50fe6b21dedc5d7971baad988 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 23 Sep 2014 09:40:24 -0400
Subject: [PATCH 3/5] drm/radeon/dpm: drop clk/voltage dependency filters for
 CI

Not sure this was ever necessary for CI, was just done
to be on the safe side.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69721

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/radeon/ci_dpm.c | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index d416bb2..d199be3 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -162,8 +162,6 @@ static const struct ci_pt_config_reg didt_config_ci[] =
 };
 
 extern u8 rv770_get_memory_module_index(struct radeon_device *rdev);
-extern void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
-							    u32 *max_clock);
 extern int ni_copy_and_switch_arb_sets(struct radeon_device *rdev,
 				       u32 arb_freq_src, u32 arb_freq_dest);
 extern u8 si_get_ddr3_mclk_frequency_ratio(u32 memory_clock);
@@ -748,7 +746,6 @@ static void ci_apply_state_adjust_rules(struct radeon_device *rdev,
 	struct radeon_clock_and_voltage_limits *max_limits;
 	bool disable_mclk_switching;
 	u32 sclk, mclk;
-	u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
 	int i;
 
 	if (rps->vce_active) {
@@ -784,29 +781,6 @@ static void ci_apply_state_adjust_rules(struct radeon_device *rdev,
 		}
 	}
 
-	/* limit clocks to max supported clocks based on voltage dependency tables */
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
-							&max_sclk_vddc);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
-							&max_mclk_vddci);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
-							&max_mclk_vddc);
-
-	for (i = 0; i < ps->performance_level_count; i++) {
-		if (max_sclk_vddc) {
-			if (ps->performance_levels[i].sclk > max_sclk_vddc)
-				ps->performance_levels[i].sclk = max_sclk_vddc;
-		}
-		if (max_mclk_vddci) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddci)
-				ps->performance_levels[i].mclk = max_mclk_vddci;
-		}
-		if (max_mclk_vddc) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddc)
-				ps->performance_levels[i].mclk = max_mclk_vddc;
-		}
-	}
-
 	/* XXX validate the min clocks required for display */
 
 	if (disable_mclk_switching) {
-- 
1.8.3.1

From 25945b71ffcd4f26835d6aceb765d0713dcaa9a7 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 23 Sep 2014 09:37:37 -0400
Subject: [PATCH 2/5] drm/radeon/dpm: drop clk/voltage dependency filters for
 SI

Not sure this was ever necessary for SI, was just done
to be on the safe side.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69721

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/radeon/si_dpm.c | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 70e61ff..9e4d5d7 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -2916,7 +2916,6 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 	bool disable_sclk_switching = false;
 	u32 mclk, sclk;
 	u16 vddc, vddci;
-	u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
 	int i;
 
 	if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
@@ -2950,29 +2949,6 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 		}
 	}
 
-	/* limit clocks to max supported clocks based on voltage dependency tables */
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
-							&max_sclk_vddc);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
-							&max_mclk_vddci);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
-							&max_mclk_vddc);
-
-	for (i = 0; i < ps->performance_level_count; i++) {
-		if (max_sclk_vddc) {
-			if (ps->performance_levels[i].sclk > max_sclk_vddc)
-				ps->performance_levels[i].sclk = max_sclk_vddc;
-		}
-		if (max_mclk_vddci) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddci)
-				ps->performance_levels[i].mclk = max_mclk_vddci;
-		}
-		if (max_mclk_vddc) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddc)
-				ps->performance_levels[i].mclk = max_mclk_vddc;
-		}
-	}
-
 	/* XXX validate the min clocks required for display */
 
 	if (disable_mclk_switching) {
-- 
1.8.3.1

From be2bae17c86670d2af271e4df6644d27ef105114 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 23 Sep 2014 09:34:06 -0400
Subject: [PATCH 1/5] drm/radeon/dpm: drop clk/voltage dependency filters for
 NI

No longer needed now that the underlying bug was fixed in
b0880e87c1fd038b84498944f52e52c3e86ebe59
(drm/radeon/dpm: fix vddci setup typo on cayman).

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69721

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/radeon/ni_dpm.c | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c
index 01fc488..715b181 100644
--- a/drivers/gpu/drm/radeon/ni_dpm.c
+++ b/drivers/gpu/drm/radeon/ni_dpm.c
@@ -789,7 +789,6 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev,
 	bool disable_mclk_switching;
 	u32 mclk;
 	u16 vddci;
-	u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
 	int i;
 
 	if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
@@ -816,29 +815,6 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev,
 		}
 	}
 
-	/* limit clocks to max supported clocks based on voltage dependency tables */
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
-							&max_sclk_vddc);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
-							&max_mclk_vddci);
-	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
-							&max_mclk_vddc);
-
-	for (i = 0; i < ps->performance_level_count; i++) {
-		if (max_sclk_vddc) {
-			if (ps->performance_levels[i].sclk > max_sclk_vddc)
-				ps->performance_levels[i].sclk = max_sclk_vddc;
-		}
-		if (max_mclk_vddci) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddci)
-				ps->performance_levels[i].mclk = max_mclk_vddci;
-		}
-		if (max_mclk_vddc) {
-			if (ps->performance_levels[i].mclk > max_mclk_vddc)
-				ps->performance_levels[i].mclk = max_mclk_vddc;
-		}
-	}
-
 	/* XXX validate the min clocks required for display */
 
 	/* adjust low state */
-- 
1.8.3.1

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