| Message ID | 20230908145329.154024-2-manivannan.sadhasivam@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] scsi: ufs: ufs-qcom: Update PHY settings only when scaling to higher gears | expand |
On 9/8/2023 10:53 PM, Manivannan Sadhasivam wrote: > The "hs_gear" variable is used to cache the gear setting for the PHY that > will be used during ufs_qcom_power_up_sequence(). But it creates ambiguity > with the gear setting used by the ufshcd driver. > > So let's rename it to "phy_gear" to make it explicit that this variable > caches the gear setting for the PHY. > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > --- > drivers/ufs/host/ufs-qcom.c | 14 +++++++------- > drivers/ufs/host/ufs-qcom.h | 2 +- > 2 files changed, 8 insertions(+), 8 deletions(-) > > diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c > index ebb8054a3b3e..93a72d0a1751 100644 > --- a/drivers/ufs/host/ufs-qcom.c > +++ b/drivers/ufs/host/ufs-qcom.c > @@ -460,7 +460,7 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) > return ret; > } > > - phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->hs_gear); > + phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->phy_gear); > > /* power on phy - start serdes and phy's power and clocks */ > ret = phy_power_on(phy); > @@ -910,12 +910,12 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, > } > > /* > - * Update hs_gear only when the gears are scaled to a higher value. This is because, > - * the PHY gear settings are backwards compatible and we only need to change the PHY > - * settings while scaling to higher gears. > + * Update phy_gear only when the gears are scaled to a higher value. This is > + * because, the PHY gear settings are backwards compatible and we only need to > + * change the PHY gear settings while scaling to higher gears. > */ > - if (dev_req_params->gear_tx > host->hs_gear) > - host->hs_gear = dev_req_params->gear_tx; > + if (dev_req_params->gear_tx > host->phy_gear) > + host->phy_gear = dev_req_params->gear_tx; > > /* enable the device ref clock before changing to HS mode */ > if (!ufshcd_is_hs_mode(&hba->pwr_info) && > @@ -1282,7 +1282,7 @@ static int ufs_qcom_init(struct ufs_hba *hba) > * Power up the PHY using the minimum supported gear (UFS_HS_G2). > * Switching to max gear will be performed during reinit if supported. > */ > - host->hs_gear = UFS_HS_G2; > + host->phy_gear = UFS_HS_G2; > > return 0; > > diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h > index dc27395ecba1..8d8613eff959 100644 > --- a/drivers/ufs/host/ufs-qcom.h > +++ b/drivers/ufs/host/ufs-qcom.h > @@ -227,7 +227,7 @@ struct ufs_qcom_host { > > struct gpio_desc *device_reset; > > - u32 hs_gear; > + u32 phy_gear; > > int esi_base; > bool esi_enabled; Reviewed-by: Can Guo <quic_cang@quicinc.com> Tested-by: Can Guo <quic_cang@quicinc.com>
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index ebb8054a3b3e..93a72d0a1751 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -460,7 +460,7 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) return ret; } - phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->hs_gear); + phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->phy_gear); /* power on phy - start serdes and phy's power and clocks */ ret = phy_power_on(phy); @@ -910,12 +910,12 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, } /* - * Update hs_gear only when the gears are scaled to a higher value. This is because, - * the PHY gear settings are backwards compatible and we only need to change the PHY - * settings while scaling to higher gears. + * Update phy_gear only when the gears are scaled to a higher value. This is + * because, the PHY gear settings are backwards compatible and we only need to + * change the PHY gear settings while scaling to higher gears. */ - if (dev_req_params->gear_tx > host->hs_gear) - host->hs_gear = dev_req_params->gear_tx; + if (dev_req_params->gear_tx > host->phy_gear) + host->phy_gear = dev_req_params->gear_tx; /* enable the device ref clock before changing to HS mode */ if (!ufshcd_is_hs_mode(&hba->pwr_info) && @@ -1282,7 +1282,7 @@ static int ufs_qcom_init(struct ufs_hba *hba) * Power up the PHY using the minimum supported gear (UFS_HS_G2). * Switching to max gear will be performed during reinit if supported. */ - host->hs_gear = UFS_HS_G2; + host->phy_gear = UFS_HS_G2; return 0; diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index dc27395ecba1..8d8613eff959 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -227,7 +227,7 @@ struct ufs_qcom_host { struct gpio_desc *device_reset; - u32 hs_gear; + u32 phy_gear; int esi_base; bool esi_enabled;
The "hs_gear" variable is used to cache the gear setting for the PHY that will be used during ufs_qcom_power_up_sequence(). But it creates ambiguity with the gear setting used by the ufshcd driver. So let's rename it to "phy_gear" to make it explicit that this variable caches the gear setting for the PHY. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> --- drivers/ufs/host/ufs-qcom.c | 14 +++++++------- drivers/ufs/host/ufs-qcom.h | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-)