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Commit 0030a7a0 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "dwc3-msm: Add default-bus-vote property to select default USB bus voting"

parents 0a473d70 0c947778

Documentation/devicetree/bindings/usb/msm-ssusb.txt

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ Optional properties : 
    - qcom,msm_bus,num_cases

    - qcom,msm_bus,num_paths

    - qcom,msm_bus,vectors

- qcom,default-bus-vote: To use default bus voting other than NOMINAL. Default is NOMINAL.

- interrupt-names : Optional interrupt resource entries are:

    "ss_phy_irq"  : Interrupt from super speed phy for wake up notification.

    "hs_phy_irq" : Interrupt from HS PHY for asynchronous events in LPM.

drivers/usb/dwc3/dwc3-msm.c

+15 −4
Original line number Diff line number Diff line
@@ -281,6 +281,7 @@ struct dwc3_msm { 
	unsigned int		max_power;

	bool			charging_disabled;

	enum dwc3_drd_state	drd_state;

	enum bus_vote		default_bus_vote;

	enum bus_vote		override_bus_vote;

	u32			bus_perf_client;

	struct msm_bus_scale_pdata	*bus_scale_table;
@@ -2369,7 +2370,7 @@ static int dwc3_msm_update_bus_bw(struct dwc3_msm *mdwc, enum bus_vote bv) 
	 * from userspace.

	 */

	if (bv >= mdwc->bus_scale_table->num_usecases)

		bv_index = BUS_VOTE_NOMINAL;

		bv_index = mdwc->default_bus_vote;

	else if (bv == BUS_VOTE_NONE)

		bv_index = BUS_VOTE_NONE;
@@ -2611,7 +2612,7 @@ static int dwc3_msm_resume(struct dwc3_msm *mdwc) 
	if (mdwc->in_host_mode && mdwc->max_rh_port_speed == USB_SPEED_HIGH)

		dwc3_msm_update_bus_bw(mdwc, BUS_VOTE_SVS);

	else

		dwc3_msm_update_bus_bw(mdwc, BUS_VOTE_NOMINAL);

		dwc3_msm_update_bus_bw(mdwc, mdwc->default_bus_vote);



	/* Vote for TCXO while waking up USB HSPHY */

	ret = clk_prepare_enable(mdwc->xo_clk);
@@ -3471,7 +3472,7 @@ static ssize_t bus_vote_store(struct device *dev, 
			&& (mdwc->max_rh_port_speed == USB_SPEED_HIGH))

			bv = BUS_VOTE_SVS;

		else

			bv = BUS_VOTE_NOMINAL;

			bv = mdwc->default_bus_vote;



		dwc3_msm_update_bus_bw(mdwc, bv);

	}
@@ -3753,10 +3754,20 @@ static int dwc3_msm_probe(struct platform_device *pdev) 
		goto put_dwc3;

	}



	/* use default as nominal bus voting */

	mdwc->default_bus_vote = BUS_VOTE_NOMINAL;

	ret = of_property_read_u32(node, "qcom,default-bus-vote",

			&mdwc->default_bus_vote);



	mdwc->bus_scale_table = msm_bus_cl_get_pdata(pdev);

	if (mdwc->bus_scale_table) {

		mdwc->bus_perf_client =

			msm_bus_scale_register_client(mdwc->bus_scale_table);



		/* default_bus_vote is out of range, use nominal bus voting */

		if (mdwc->default_bus_vote >=

				mdwc->bus_scale_table->num_usecases)

			mdwc->default_bus_vote = BUS_VOTE_NOMINAL;

	}



	dwc = platform_get_drvdata(mdwc->dwc3);
@@ -4032,7 +4043,7 @@ static int dwc3_msm_host_notifier(struct notifier_block *nb, 
			dev_dbg(mdwc->dev, "set core clk rate %ld\n",

				mdwc->core_clk_rate);

			mdwc->max_rh_port_speed = USB_SPEED_UNKNOWN;

			dwc3_msm_update_bus_bw(mdwc, BUS_VOTE_NOMINAL);

			dwc3_msm_update_bus_bw(mdwc, mdwc->default_bus_vote);

		}

	}