mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-03-14 23:25:29 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915: Add helpers for managing rps thresholds

Browse Source 
In preparation for exposing via sysfs add helpers for managing rps
thresholds.

v2:
 * Force sw and hw re-programming on threshold change.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@kernel.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230717164013.826614-3-tvrtko.ursulin@linux.intel.com
This commit is contained in:
Tvrtko Ursulin
2023-07-17 17:40:12 +01:00
parent c188622225
commit c1be616260
2 changed files with 58 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
drivers/gpu/drm/i915/gt/intel_rps.c
View File

@@ -14,7 +14,9 @@
#include "intel_gt.h"
#include "intel_gt_clock_utils.h"
#include "intel_gt_irq.h"
#include "intel_gt_pm.h"
#include "intel_gt_pm_irq.h"
#include "intel_gt_print.h"
#include "intel_gt_regs.h"
#include "intel_mchbar_regs.h"
#include "intel_pcode.h"
@@ -2572,6 +2574,58 @@ int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val)
return set_min_freq(rps, val);
}
u8 intel_rps_get_up_threshold(struct intel_rps *rps)
{
return rps->power.up_threshold;
}
static int rps_set_threshold(struct intel_rps *rps, u8 *threshold, u8 val)
{
int ret;
if (val > 100)
return -EINVAL;
ret = mutex_lock_interruptible(&rps->lock);
if (ret)
return ret;
if (*threshold == val)
goto out_unlock;
*threshold = val;
/* Force reset. */
rps->last_freq = -1;
mutex_lock(&rps->power.mutex);
rps->power.mode = -1;
mutex_unlock(&rps->power.mutex);
intel_rps_set(rps, clamp(rps->cur_freq,
rps->min_freq_softlimit,
rps->max_freq_softlimit));
out_unlock:
mutex_unlock(&rps->lock);
return ret;
}
int intel_rps_set_up_threshold(struct intel_rps *rps, u8 threshold)
{
return rps_set_threshold(rps, &rps->power.up_threshold, threshold);
}
u8 intel_rps_get_down_threshold(struct intel_rps *rps)
{
return rps->power.down_threshold;
}
int intel_rps_set_down_threshold(struct intel_rps *rps, u8 threshold)
{
return rps_set_threshold(rps, &rps->power.down_threshold, threshold);
}
static void intel_rps_set_manual(struct intel_rps *rps, bool enable)
{
struct intel_uncore *uncore = rps_to_uncore(rps);

4
drivers/gpu/drm/i915/gt/intel_rps.h
View File

@@ -37,6 +37,10 @@ void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive);
int intel_gpu_freq(struct intel_rps *rps, int val);
int intel_freq_opcode(struct intel_rps *rps, int val);
u8 intel_rps_get_up_threshold(struct intel_rps *rps);
int intel_rps_set_up_threshold(struct intel_rps *rps, u8 threshold);
u8 intel_rps_get_down_threshold(struct intel_rps *rps);
int intel_rps_set_down_threshold(struct intel_rps *rps, u8 threshold);
u32 intel_rps_read_actual_frequency(struct intel_rps *rps);
u32 intel_rps_read_actual_frequency_fw(struct intel_rps *rps);
u32 intel_rps_get_requested_frequency(struct intel_rps *rps);