Example #1
0
/*
 * Gets host hardware parameters. Forces host mode if not currently in
 * host mode. Should be called immediately after a core soft reset in
 * order to get the reset values.
 */
static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	u32 gnptxfsiz;
	u32 hptxfsiz;
	bool forced;

	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
		return;

	forced = dwc2_force_mode_if_needed(hsotg, true);

	gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
	hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ);
	dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz);
	dev_dbg(hsotg->dev, "hptxfsiz=%08x\n", hptxfsiz);

	if (forced)
		dwc2_clear_force_mode(hsotg);

	hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				       FIFOSIZE_DEPTH_SHIFT;
	hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				      FIFOSIZE_DEPTH_SHIFT;
}
Example #2
0
/*
 * Gets device hardware parameters. Forces device mode if not
 * currently in device mode. Should be called immediately after a core
 * soft reset in order to get the reset values.
 */
static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	bool forced;
	u32 gnptxfsiz;

	if (hsotg->dr_mode == USB_DR_MODE_HOST)
		return;

	forced = dwc2_force_mode_if_needed(hsotg, false);

	gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);

	if (forced)
		dwc2_clear_force_mode(hsotg);

	hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				       FIFOSIZE_DEPTH_SHIFT;
}