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Commit f9f93cbb authored by John Youn's avatar John Youn Committed by Felipe Balbi
Browse files

usb: dwc2: Get device properties 



After setting the default core parameter values, read in the device
properties and modify core parameter values if needed.

Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 245977c9

drivers/usb/dwc2/params.c

+35 −0
Original line number Diff line number Diff line
@@ -343,6 +343,40 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) 
	}

}



/**

 * dwc2_get_device_properties() - Read in device properties.

 *

 * Read in the device properties and adjust core parameters if needed.

 */

static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg)

{

	struct dwc2_core_params *p = &hsotg->params;

	int num;



	if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||

	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {

		device_property_read_u32(hsotg->dev, "g-rx-fifo-size",

					 &p->g_rx_fifo_size);



		device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size",

					 &p->g_np_tx_fifo_size);



		num = device_property_read_u32_array(hsotg->dev,

						     "g-tx-fifo-size",

						     NULL, 0);



		if (num > 0) {

			num = min(num, 15);

			memset(p->g_tx_fifo_size, 0,

			       sizeof(p->g_tx_fifo_size));

			device_property_read_u32_array(hsotg->dev,

						       "g-tx-fifo-size",

						       &p->g_tx_fifo_size[1],

						       num);

		}

	}

}



/*

 * Gets host hardware parameters. Forces host mode if not currently in

 * host mode. Should be called immediately after a core soft reset in
@@ -555,6 +589,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) 
int dwc2_init_params(struct dwc2_hsotg *hsotg)

{

	dwc2_set_default_params(hsotg);

	dwc2_get_device_properties(hsotg);



	return 0;

}