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Commit a5c18f11 authored by Vahram Aharonyan's avatar Vahram Aharonyan Committed by Felipe Balbi
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usb: dwc2: gadget: Enable descriptor DMA mode 



Add DCFG register field macro for descriptor DMA mode and update core
initialization routine to set that bit accordingly.

Signed-off-by: default avatarVahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent ef750c71

drivers/usb/dwc2/gadget.c

+8 −2
Original line number Diff line number Diff line
@@ -2888,15 +2888,21 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, 


	dwc2_writel(intmsk, hsotg->regs + GINTMSK);



	if (using_dma(hsotg))

	if (using_dma(hsotg)) {

		dwc2_writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN |

			    (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT),

			    hsotg->regs + GAHBCFG);

	else



		/* Set DDMA mode support in the core if needed */

		if (using_desc_dma(hsotg))

			__orr32(hsotg->regs + DCFG, DCFG_DESCDMA_EN);



	} else {

		dwc2_writel(((hsotg->dedicated_fifos) ?

						(GAHBCFG_NP_TXF_EMP_LVL |

						 GAHBCFG_P_TXF_EMP_LVL) : 0) |

			    GAHBCFG_GLBL_INTR_EN, hsotg->regs + GAHBCFG);

	}



	/*

	 * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts

drivers/usb/dwc2/hw.h

+1 −0
Original line number Diff line number Diff line
@@ -412,6 +412,7 @@ 
/* Device mode registers */



#define DCFG				HSOTG_REG(0x800)

#define DCFG_DESCDMA_EN			(1 << 23)

#define DCFG_EPMISCNT_MASK		(0x1f << 18)

#define DCFG_EPMISCNT_SHIFT		18

#define DCFG_EPMISCNT_LIMIT		0x1f