diff options
| author | Alex Frid <afrid@nvidia.com> | 2014-03-15 20:53:57 -0700 |
|---|---|---|
| committer | Yu-Huan Hsu <yhsu@nvidia.com> | 2014-03-17 12:32:24 -0700 |
| commit | aec4999e98980121734752f6f15c993455acff98 (patch) | |
| tree | f519a6b868a0c0d7281e497d93b0fa4bb279d423 /arch/arm/mach-tegra/tegra_simon.c | |
| parent | 18410fc7404225aa4f578fb7741b7f8080dfa13d (diff) | |
ARM: tegra: power: Allow SiMon high grade once
Updated SiMon grading policy so that lowering high (non-zero) grade
back to zero automatically stops grading completely.
Bug 1343366
Change-Id: I1d94b071eba7bfdd4371958d018a702bf58b8cb5
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/382336
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra_simon.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra_simon.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra_simon.c b/arch/arm/mach-tegra/tegra_simon.c index 7a8a2d4af84e..b767de8d1691 100644 --- a/arch/arm/mach-tegra/tegra_simon.c +++ b/arch/arm/mach-tegra/tegra_simon.c @@ -79,6 +79,9 @@ static int tegra_simon_gpu_grading_cb( if (!(event & REGULATOR_EVENT_OUT_POSTCHANGE)) return NOTIFY_DONE; + if (grader->stop_grading) + return NOTIFY_OK; + mv = (mv > 0) ? mv / 1000 : mv; if ((mv <= 0) || (mv > grader->desc->grading_mv_limit)) return NOTIFY_OK; @@ -106,6 +109,9 @@ static int tegra_simon_gpu_grading_cb( grader->last_grading = now; if (grader->grade != grade) { + /* once return to low grade, stay until next boot */ + if (grade == 0) + grader->stop_grading = true; set_mb(grader->grade, grade); schedule_work(&grader->grade_update_work); } @@ -166,6 +172,9 @@ static int tegra_simon_cpu_grading_cb( int mv; int grade = 0; + if (grader->stop_grading) + return NOTIFY_OK; + if (is_lp_cluster() || (rate > grader->desc->garding_rate_limit) || !tegra_dvfs_rail_is_dfll_mode(tegra_cpu_rail)) return NOTIFY_OK; @@ -209,6 +218,9 @@ static int tegra_simon_cpu_grading_cb( grader->last_grading = now; if (grader->grade != grade) { + /* once return to low grade, stay until next boot */ + if (grade == 0) + grader->stop_grading = true; set_mb(grader->grade, grade); schedule_work(&grader->grade_update_work); } @@ -375,6 +387,10 @@ static int __init simon_debugfs_init_domain(struct dentry *dir, (void *)grader, &grade_fops)) return -ENOMEM; + if (!debugfs_create_bool("grading_stopped", S_IRUGO, d, + (u32 *)&grader->stop_grading)) + return -ENOMEM; + return 0; } |