Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e9425a0e authored by Can Guo's avatar Can Guo
Browse files

scsi: ufs: Put hba into LPM during clk gating 



During clock gating, after clocks are disabled, put hba into LPM to save
more power.

Change-Id: I1d8d76f3b72a2346c9ab6268555b0b416cb3b16f
Signed-off-by: default avatarCan Guo <cang@codeaurora.org>
parent 1d86c274

drivers/scsi/ufs/ufshcd.c

+11 −0
Original line number Diff line number Diff line
@@ -270,6 +270,10 @@ static void ufshcd_resume_clkscaling(struct ufs_hba *hba); 
static void ufshcd_suspend_clkscaling(struct ufs_hba *hba);

static void __ufshcd_suspend_clkscaling(struct ufs_hba *hba);

static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up);

#if defined(CONFIG_SCSI_UFSHCD_QTI)

static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);

static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);

#endif

static irqreturn_t ufshcd_intr(int irq, void *__hba);

static int ufshcd_change_power_mode(struct ufs_hba *hba,

			     struct ufs_pa_layer_attr *pwr_mode);
@@ -1619,6 +1623,9 @@ static void ufshcd_ungate_work(struct work_struct *work) 
	}



	spin_unlock_irqrestore(hba->host->host_lock, flags);

#if defined(CONFIG_SCSI_UFSHCD_QTI)

	ufshcd_hba_vreg_set_hpm(hba);

#endif

	ufshcd_setup_clocks(hba, true);



	ufshcd_enable_irq(hba);
@@ -1784,6 +1791,10 @@ static void ufshcd_gate_work(struct work_struct *work) 
		/* If link is active, device ref_clk can't be switched off */

		__ufshcd_setup_clocks(hba, false, true);



#if defined(CONFIG_SCSI_UFSHCD_QTI)

	/* Put the host controller in low power mode if possible */

	ufshcd_hba_vreg_set_lpm(hba);

#endif

	/*

	 * In case you are here to cancel this work the gating state

	 * would be marked as REQ_CLKS_ON. In this case keep the state