diff options
| author | Can Guo <cang@codeaurora.org> | 2020-11-27 02:58:48 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-12-01 06:16:35 +0100 |
| commit | 29b87e92a21605ed74888e4d2a31055d95dfafe1 (patch) | |
| tree | 96f701dc7d5ae11de3ec4908044941a7fd0ca5e4 /drivers/scsi/ufs | |
| parent | scsi: ufs-qcom: Keep core_clk_unipro on while link is active (diff) | |
| download | linux-29b87e92a21605ed74888e4d2a31055d95dfafe1.tar.xz linux-29b87e92a21605ed74888e4d2a31055d95dfafe1.zip | |
scsi: ufs: Stop hardcoding the scale down gear
Instead of hardcoding the scale down gear, make it a member of
the ufs_clk_scaling struct.
Link: https://lore.kernel.org/r/1606442334-22641-1-git-send-email-cang@codeaurora.org
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 12 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 2 |
2 files changed, 9 insertions, 5 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 17f4e632fa9a..11a4aad09f3a 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1114,7 +1114,6 @@ out: */ static int ufshcd_scale_gear(struct ufs_hba *hba, bool scale_up) { - #define UFS_MIN_GEAR_TO_SCALE_DOWN UFS_HS_G1 int ret = 0; struct ufs_pa_layer_attr new_pwr_info; @@ -1125,16 +1124,16 @@ static int ufshcd_scale_gear(struct ufs_hba *hba, bool scale_up) memcpy(&new_pwr_info, &hba->pwr_info, sizeof(struct ufs_pa_layer_attr)); - if (hba->pwr_info.gear_tx > UFS_MIN_GEAR_TO_SCALE_DOWN - || hba->pwr_info.gear_rx > UFS_MIN_GEAR_TO_SCALE_DOWN) { + if (hba->pwr_info.gear_tx > hba->clk_scaling.min_gear || + hba->pwr_info.gear_rx > hba->clk_scaling.min_gear) { /* save the current power mode */ memcpy(&hba->clk_scaling.saved_pwr_info.info, &hba->pwr_info, sizeof(struct ufs_pa_layer_attr)); /* scale down gear */ - new_pwr_info.gear_tx = UFS_MIN_GEAR_TO_SCALE_DOWN; - new_pwr_info.gear_rx = UFS_MIN_GEAR_TO_SCALE_DOWN; + new_pwr_info.gear_tx = hba->clk_scaling.min_gear; + new_pwr_info.gear_rx = hba->clk_scaling.min_gear; } } @@ -1842,6 +1841,9 @@ static void ufshcd_init_clk_scaling(struct ufs_hba *hba) if (!ufshcd_is_clkscaling_supported(hba)) return; + if (!hba->clk_scaling.min_gear) + hba->clk_scaling.min_gear = UFS_HS_G1; + INIT_WORK(&hba->clk_scaling.suspend_work, ufshcd_clk_scaling_suspend_work); INIT_WORK(&hba->clk_scaling.resume_work, diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 3a8bd7aa104d..7a7e056a33a9 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -390,6 +390,7 @@ struct ufs_saved_pwr_info { * @workq: workqueue to schedule devfreq suspend/resume work * @suspend_work: worker to suspend devfreq * @resume_work: worker to resume devfreq + * @min_gear: lowest HS gear to scale down to * @is_allowed: tracks if scaling is currently allowed or not * @is_busy_started: tracks if busy period has started or not * @is_suspended: tracks if devfreq is suspended or not @@ -404,6 +405,7 @@ struct ufs_clk_scaling { struct workqueue_struct *workq; struct work_struct suspend_work; struct work_struct resume_work; + u32 min_gear; bool is_allowed; bool is_busy_started; bool is_suspended; |