diff options
| author | Peter Wang <peter.wang@mediatek.com> | 2022-06-23 11:50:51 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-06-27 23:17:36 -0400 |
| commit | c64c487d953331df239cf866d178612796e59f93 (patch) | |
| tree | 20f6e60250d9edb634ba5132f68f9639c19a5c79 /drivers/ufs | |
| parent | 2cf5cb2bb13140ecc0f01ebc8844ee8b5203293f (diff) | |
| download | linux-c64c487d953331df239cf866d178612796e59f93.tar.bz2 | |
scsi: ufs: ufs-mediatek: Support performance boosting
Add pm-qos request to support performance boosting in MediaTek UFS
platforms.
At the same time, adjust the order of function calls to be symmetric during
the low-power control flow.
Link: https://lore.kernel.org/r/20220623035052.18802-8-stanley.chu@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.c | 34 | ||||
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.h | 3 |
2 files changed, 29 insertions, 8 deletions
diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 7254629484ab..f81a7444f8a6 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -16,6 +16,7 @@ #include <linux/of_device.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> +#include <linux/pm_qos.h> #include <linux/regulator/consumer.h> #include <linux/reset.h> #include <linux/sched/clock.h> @@ -586,17 +587,32 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) dev_info(hba->dev, "caps: 0x%x", host->caps); } -static void ufs_mtk_scale_perf(struct ufs_hba *hba, bool up) +static void ufs_mtk_boost_pm_qos(struct ufs_hba *hba, bool boost) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); - ufs_mtk_boost_crypt(hba, up); - ufs_mtk_setup_ref_clk(hba, up); + if (!host || !host->pm_qos_init) + return; + + cpu_latency_qos_update_request(&host->pm_qos_req, + boost ? 0 : PM_QOS_DEFAULT_VALUE); +} + +static void ufs_mtk_pwr_ctrl(struct ufs_hba *hba, bool on) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); - if (up) + if (on) { phy_power_on(host->mphy); - else + ufs_mtk_setup_ref_clk(hba, on); + ufs_mtk_boost_crypt(hba, on); + ufs_mtk_boost_pm_qos(hba, on); + } else { + ufs_mtk_boost_pm_qos(hba, on); + ufs_mtk_boost_crypt(hba, on); + ufs_mtk_setup_ref_clk(hba, on); phy_power_off(host->mphy); + } } /** @@ -641,9 +657,9 @@ static int ufs_mtk_setup_clocks(struct ufs_hba *hba, bool on, } if (clk_pwr_off) - ufs_mtk_scale_perf(hba, false); + ufs_mtk_pwr_ctrl(hba, false); } else if (on && status == POST_CHANGE) { - ufs_mtk_scale_perf(hba, true); + ufs_mtk_pwr_ctrl(hba, true); } return ret; @@ -1248,8 +1264,10 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba) struct ufs_dev_info *dev_info = &hba->dev_info; u16 mid = dev_info->wmanufacturerid; - if (mid == UFS_VENDOR_SAMSUNG) + if (mid == UFS_VENDOR_SAMSUNG) { ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6); + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10); + } /* * Decide waiting time before gating reference clock and diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index cdf40851e626..aa26d415527b 100644 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -7,6 +7,7 @@ #define _UFS_MEDIATEK_H #include <linux/bitops.h> +#include <linux/pm_qos.h> #include <linux/soc/mediatek/mtk_sip_svc.h> /* @@ -131,6 +132,7 @@ struct ufs_mtk_hw_ver { struct ufs_mtk_host { struct phy *mphy; + struct pm_qos_request pm_qos_req; struct regulator *reg_va09; struct reset_control *hci_reset; struct reset_control *unipro_reset; @@ -140,6 +142,7 @@ struct ufs_mtk_host { struct ufs_mtk_hw_ver hw_ver; enum ufs_mtk_host_caps caps; bool mphy_powered_on; + bool pm_qos_init; bool unipro_lpm; bool ref_clk_enabled; u16 ref_clk_ungating_wait_us; |