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Commit 80b88aa8 authored by Mayank Rana's avatar Mayank Rana
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Revert "dwc3-msm: Perform soft reset of USB GSI interface" 



This reverts commit 4148ee91 ("dwc3-msm: Perform soft reset of
USB GSI interface") as doing USB GSI wrapper soft reset is causing
some unrelated issue.

Change-Id: I8fae25eea03256cc998d9d555dbbf20a53d39c71
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 01697ba5

drivers/usb/dwc3/dwc3-msm.c

+4 −24
Original line number Diff line number Diff line
@@ -105,7 +105,6 @@ 
#define	GSI_GENERAL_CFG_REG(offset) (QSCRATCH_REG_OFFSET + offset)

#define	GSI_RESTART_DBL_PNTR_MASK	BIT(20)

#define	GSI_CLK_EN_MASK			BIT(12)

#define	GSI_RESET_MASK			BIT(8)

#define	BLOCK_GSI_WR_GO_MASK		BIT(1)

#define	GSI_EN_MASK			BIT(0)
@@ -963,6 +962,10 @@ static void gsi_store_ringbase_dbl_info(struct usb_ep *ep, 
		GSI_RING_BASE_ADDR_L(mdwc->gsi_reg[RING_BASE_ADDR_L], (n)),

		dwc3_trb_dma_offset(dep, &dep->trb_pool[0]));



	if (request->mapped_db_reg_phs_addr_lsb)

		dma_unmap_resource(dwc->sysdev,

			request->mapped_db_reg_phs_addr_lsb,

			PAGE_SIZE, DMA_BIDIRECTIONAL, 0);



	request->mapped_db_reg_phs_addr_lsb = dma_map_resource(dwc->sysdev,

			(phys_addr_t)request->db_reg_phs_addr_lsb, PAGE_SIZE,
@@ -1475,12 +1478,7 @@ static int dwc3_msm_gsi_ep_op(struct usb_ep *ep, 
		ret = gsi_check_ready_to_suspend(ep, f_suspend);

		break;

	case GSI_EP_OP_DISABLE:

		request = (struct usb_gsi_request *)op_data;

		ret = ep->ops->disable(ep);

		if (request->mapped_db_reg_phs_addr_lsb)

			dma_unmap_resource(dwc->sysdev,

				request->mapped_db_reg_phs_addr_lsb,

				PAGE_SIZE, DMA_BIDIRECTIONAL, 0);

		break;

	default:

		dev_err(mdwc->dev, "%s: Invalid opcode GSI EP\n", __func__);
@@ -1939,24 +1937,6 @@ static void dwc3_msm_notify_event(struct dwc3 *dwc, unsigned int event, 
		break;

	case DWC3_GSI_EVT_BUF_SETUP:

		dev_dbg(mdwc->dev, "DWC3_GSI_EVT_BUF_SETUP\n");



		if (!mdwc->num_gsi_event_buffers)

			break;



		dbg_log_string("before reset STS:%x\n",

			dwc3_msm_read_reg(mdwc->base,

				GSI_IF_STS(mdwc->gsi_reg[IF_STS])));

		/* soft reset usb gsi interface */

		dwc3_msm_write_reg_field(mdwc->base,

			GSI_GENERAL_CFG_REG(mdwc->gsi_reg[GENERAL_CFG_REG]),

			GSI_RESET_MASK, 1);

		dwc3_msm_write_reg_field(mdwc->base,

			GSI_GENERAL_CFG_REG(mdwc->gsi_reg[GENERAL_CFG_REG]),

			GSI_RESET_MASK, 0);

		dbg_log_string("after reset STS:%x\n",

			dwc3_msm_read_reg(mdwc->base,

				GSI_IF_STS(mdwc->gsi_reg[IF_STS])));



		for (i = 0; i < mdwc->num_gsi_event_buffers; i++) {

			evt = mdwc->gsi_ev_buff[i];

			if (!evt)