| Message ID | 1457265358-31635-17-git-send-email-ygardi@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
Reviewed-by: Gilad Broner <gbroner@codeaurora.org> > This change enables the device ref clock before changing to HS mode > and disables it if entered to PWM mode. > > Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> > > --- > drivers/scsi/ufs/ufs-qcom.c | 12 ++++++++++++ > drivers/scsi/ufs/ufshcd.h | 9 +++++++++ > 2 files changed, 21 insertions(+) > > diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c > index 966bacf..849fcf3 100644 > --- a/drivers/scsi/ufs/ufs-qcom.c > +++ b/drivers/scsi/ufs/ufs-qcom.c > @@ -980,6 +980,10 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba > *hba, > goto out; > } > > + /* enable the device ref clock before changing to HS mode */ > + if (!ufshcd_is_hs_mode(&hba->pwr_info) && > + ufshcd_is_hs_mode(dev_req_params)) > + ufs_qcom_dev_ref_clk_ctrl(host, true); > break; > case POST_CHANGE: > if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx, > @@ -1007,6 +1011,11 @@ static int ufs_qcom_pwr_change_notify(struct > ufs_hba *hba, > memcpy(&host->dev_req_params, > dev_req_params, sizeof(*dev_req_params)); > ufs_qcom_update_bus_bw_vote(host); > + > + /* disable the device ref clock if entered PWM mode */ > + if (ufshcd_is_hs_mode(&hba->pwr_info) && > + !ufshcd_is_hs_mode(dev_req_params)) > + ufs_qcom_dev_ref_clk_ctrl(host, false); > break; > default: > ret = -EINVAL; > @@ -1108,6 +1117,9 @@ static int ufs_qcom_setup_clocks(struct ufs_hba > *hba, bool on) > ufs_qcom_phy_disable_iface_clk(host->generic_phy); > goto out; > } > + /* enable the device ref clock for HS mode*/ > + if (ufshcd_is_hs_mode(&hba->pwr_info)) > + ufs_qcom_dev_ref_clk_ctrl(host, true); > vote = host->bus_vote.saved_vote; > if (vote == host->bus_vote.min_bw_vote) > ufs_qcom_update_bus_bw_vote(host); > diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h > index 41d9bfd..4bb6566 100644 > --- a/drivers/scsi/ufs/ufshcd.h > +++ b/drivers/scsi/ufs/ufshcd.h > @@ -54,6 +54,7 @@ > #include <linux/clk.h> > #include <linux/completion.h> > #include <linux/regulator/consumer.h> > +#include "unipro.h" > > #include <asm/irq.h> > #include <asm/byteorder.h> > @@ -689,6 +690,14 @@ static inline int ufshcd_dme_peer_get(struct ufs_hba > *hba, > > int ufshcd_read_device_desc(struct ufs_hba *hba, u8 *buf, u32 size); > > +static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info) > +{ > + return (pwr_info->pwr_rx == FAST_MODE || > + pwr_info->pwr_rx == FASTAUTO_MODE) && > + (pwr_info->pwr_tx == FAST_MODE || > + pwr_info->pwr_tx == FASTAUTO_MODE); > +} > + > #define ASCII_STD true > > int ufshcd_read_string_desc(struct ufs_hba *hba, int desc_index, u8 *buf, > -- > 1.8.5.2 > > -- > QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center, Inc. is a member > of Code Aurora Forum, hosted by The Linux Foundation > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index 966bacf..849fcf3 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -980,6 +980,10 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, goto out; } + /* enable the device ref clock before changing to HS mode */ + if (!ufshcd_is_hs_mode(&hba->pwr_info) && + ufshcd_is_hs_mode(dev_req_params)) + ufs_qcom_dev_ref_clk_ctrl(host, true); break; case POST_CHANGE: if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx, @@ -1007,6 +1011,11 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, memcpy(&host->dev_req_params, dev_req_params, sizeof(*dev_req_params)); ufs_qcom_update_bus_bw_vote(host); + + /* disable the device ref clock if entered PWM mode */ + if (ufshcd_is_hs_mode(&hba->pwr_info) && + !ufshcd_is_hs_mode(dev_req_params)) + ufs_qcom_dev_ref_clk_ctrl(host, false); break; default: ret = -EINVAL; @@ -1108,6 +1117,9 @@ static int ufs_qcom_setup_clocks(struct ufs_hba *hba, bool on) ufs_qcom_phy_disable_iface_clk(host->generic_phy); goto out; } + /* enable the device ref clock for HS mode*/ + if (ufshcd_is_hs_mode(&hba->pwr_info)) + ufs_qcom_dev_ref_clk_ctrl(host, true); vote = host->bus_vote.saved_vote; if (vote == host->bus_vote.min_bw_vote) ufs_qcom_update_bus_bw_vote(host); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 41d9bfd..4bb6566 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -54,6 +54,7 @@ #include <linux/clk.h> #include <linux/completion.h> #include <linux/regulator/consumer.h> +#include "unipro.h" #include <asm/irq.h> #include <asm/byteorder.h> @@ -689,6 +690,14 @@ static inline int ufshcd_dme_peer_get(struct ufs_hba *hba, int ufshcd_read_device_desc(struct ufs_hba *hba, u8 *buf, u32 size); +static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info) +{ + return (pwr_info->pwr_rx == FAST_MODE || + pwr_info->pwr_rx == FASTAUTO_MODE) && + (pwr_info->pwr_tx == FAST_MODE || + pwr_info->pwr_tx == FASTAUTO_MODE); +} + #define ASCII_STD true int ufshcd_read_string_desc(struct ufs_hba *hba, int desc_index, u8 *buf,
This change enables the device ref clock before changing to HS mode and disables it if entered to PWM mode. Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> --- drivers/scsi/ufs/ufs-qcom.c | 12 ++++++++++++ drivers/scsi/ufs/ufshcd.h | 9 +++++++++ 2 files changed, 21 insertions(+)