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Commit 563cf017 authored by Mian Yousaf Kaukab's avatar Mian Yousaf Kaukab Committed by Felipe Balbi
Browse files

usb: dwc2: debugfs: add support for complete register dump 



Dump all registers to take a complete snapshot of dwc2 state.
Code is inspired by dwc3/debugfs.c

Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarMian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent f91eea44

drivers/usb/dwc2/core.h

+1 −0
Original line number Diff line number Diff line
@@ -615,6 +615,7 @@ struct dwc2_hsotg { 
	enum dwc2_lx_state lx_state;



	struct dentry *debug_root;

	struct debugfs_regset32 *regset;



	/* DWC OTG HW Release versions */

#define DWC2_CORE_REV_2_71a	0x4f54271a

drivers/usb/dwc2/debugfs.c

+357 −0
Original line number Diff line number Diff line
@@ -391,9 +391,344 @@ static inline void s3c_hsotg_create_debug(struct dwc2_hsotg *hsotg) {} 


/* s3c_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */



#define dump_register(nm)	\

{				\

	.name	= #nm,		\

	.offset	= nm,		\

}



static const struct debugfs_reg32 dwc2_regs[] = {

	/*

	 * Accessing registers like this can trigger mode mismatch interrupt.

	 * However, according to dwc2 databook, the register access, in this

	 * case, is completed on the processor bus but is ignored by the core

	 * and does not affect its operation.

	 */

	dump_register(GOTGCTL),

	dump_register(GOTGINT),

	dump_register(GAHBCFG),

	dump_register(GUSBCFG),

	dump_register(GRSTCTL),

	dump_register(GINTSTS),

	dump_register(GINTMSK),

	dump_register(GRXSTSR),

	dump_register(GRXSTSP),

	dump_register(GRXFSIZ),

	dump_register(GNPTXFSIZ),

	dump_register(GNPTXSTS),

	dump_register(GI2CCTL),

	dump_register(GPVNDCTL),

	dump_register(GGPIO),

	dump_register(GUID),

	dump_register(GSNPSID),

	dump_register(GHWCFG1),

	dump_register(GHWCFG2),

	dump_register(GHWCFG3),

	dump_register(GHWCFG4),

	dump_register(GLPMCFG),

	dump_register(GPWRDN),

	dump_register(GDFIFOCFG),

	dump_register(ADPCTL),

	dump_register(HPTXFSIZ),

	dump_register(DPTXFSIZN(1)),

	dump_register(DPTXFSIZN(2)),

	dump_register(DPTXFSIZN(3)),

	dump_register(DPTXFSIZN(4)),

	dump_register(DPTXFSIZN(5)),

	dump_register(DPTXFSIZN(6)),

	dump_register(DPTXFSIZN(7)),

	dump_register(DPTXFSIZN(8)),

	dump_register(DPTXFSIZN(9)),

	dump_register(DPTXFSIZN(10)),

	dump_register(DPTXFSIZN(11)),

	dump_register(DPTXFSIZN(12)),

	dump_register(DPTXFSIZN(13)),

	dump_register(DPTXFSIZN(14)),

	dump_register(DPTXFSIZN(15)),

	dump_register(DCFG),

	dump_register(DCTL),

	dump_register(DSTS),

	dump_register(DIEPMSK),

	dump_register(DOEPMSK),

	dump_register(DAINT),

	dump_register(DAINTMSK),

	dump_register(DTKNQR1),

	dump_register(DTKNQR2),

	dump_register(DTKNQR3),

	dump_register(DTKNQR4),

	dump_register(DVBUSDIS),

	dump_register(DVBUSPULSE),

	dump_register(DIEPCTL(0)),

	dump_register(DIEPCTL(1)),

	dump_register(DIEPCTL(2)),

	dump_register(DIEPCTL(3)),

	dump_register(DIEPCTL(4)),

	dump_register(DIEPCTL(5)),

	dump_register(DIEPCTL(6)),

	dump_register(DIEPCTL(7)),

	dump_register(DIEPCTL(8)),

	dump_register(DIEPCTL(9)),

	dump_register(DIEPCTL(10)),

	dump_register(DIEPCTL(11)),

	dump_register(DIEPCTL(12)),

	dump_register(DIEPCTL(13)),

	dump_register(DIEPCTL(14)),

	dump_register(DIEPCTL(15)),

	dump_register(DOEPCTL(0)),

	dump_register(DOEPCTL(1)),

	dump_register(DOEPCTL(2)),

	dump_register(DOEPCTL(3)),

	dump_register(DOEPCTL(4)),

	dump_register(DOEPCTL(5)),

	dump_register(DOEPCTL(6)),

	dump_register(DOEPCTL(7)),

	dump_register(DOEPCTL(8)),

	dump_register(DOEPCTL(9)),

	dump_register(DOEPCTL(10)),

	dump_register(DOEPCTL(11)),

	dump_register(DOEPCTL(12)),

	dump_register(DOEPCTL(13)),

	dump_register(DOEPCTL(14)),

	dump_register(DOEPCTL(15)),

	dump_register(DIEPINT(0)),

	dump_register(DIEPINT(1)),

	dump_register(DIEPINT(2)),

	dump_register(DIEPINT(3)),

	dump_register(DIEPINT(4)),

	dump_register(DIEPINT(5)),

	dump_register(DIEPINT(6)),

	dump_register(DIEPINT(7)),

	dump_register(DIEPINT(8)),

	dump_register(DIEPINT(9)),

	dump_register(DIEPINT(10)),

	dump_register(DIEPINT(11)),

	dump_register(DIEPINT(12)),

	dump_register(DIEPINT(13)),

	dump_register(DIEPINT(14)),

	dump_register(DIEPINT(15)),

	dump_register(DOEPINT(0)),

	dump_register(DOEPINT(1)),

	dump_register(DOEPINT(2)),

	dump_register(DOEPINT(3)),

	dump_register(DOEPINT(4)),

	dump_register(DOEPINT(5)),

	dump_register(DOEPINT(6)),

	dump_register(DOEPINT(7)),

	dump_register(DOEPINT(8)),

	dump_register(DOEPINT(9)),

	dump_register(DOEPINT(10)),

	dump_register(DOEPINT(11)),

	dump_register(DOEPINT(12)),

	dump_register(DOEPINT(13)),

	dump_register(DOEPINT(14)),

	dump_register(DOEPINT(15)),

	dump_register(DIEPTSIZ(0)),

	dump_register(DIEPTSIZ(1)),

	dump_register(DIEPTSIZ(2)),

	dump_register(DIEPTSIZ(3)),

	dump_register(DIEPTSIZ(4)),

	dump_register(DIEPTSIZ(5)),

	dump_register(DIEPTSIZ(6)),

	dump_register(DIEPTSIZ(7)),

	dump_register(DIEPTSIZ(8)),

	dump_register(DIEPTSIZ(9)),

	dump_register(DIEPTSIZ(10)),

	dump_register(DIEPTSIZ(11)),

	dump_register(DIEPTSIZ(12)),

	dump_register(DIEPTSIZ(13)),

	dump_register(DIEPTSIZ(14)),

	dump_register(DIEPTSIZ(15)),

	dump_register(DOEPTSIZ(0)),

	dump_register(DOEPTSIZ(1)),

	dump_register(DOEPTSIZ(2)),

	dump_register(DOEPTSIZ(3)),

	dump_register(DOEPTSIZ(4)),

	dump_register(DOEPTSIZ(5)),

	dump_register(DOEPTSIZ(6)),

	dump_register(DOEPTSIZ(7)),

	dump_register(DOEPTSIZ(8)),

	dump_register(DOEPTSIZ(9)),

	dump_register(DOEPTSIZ(10)),

	dump_register(DOEPTSIZ(11)),

	dump_register(DOEPTSIZ(12)),

	dump_register(DOEPTSIZ(13)),

	dump_register(DOEPTSIZ(14)),

	dump_register(DOEPTSIZ(15)),

	dump_register(DIEPDMA(0)),

	dump_register(DIEPDMA(1)),

	dump_register(DIEPDMA(2)),

	dump_register(DIEPDMA(3)),

	dump_register(DIEPDMA(4)),

	dump_register(DIEPDMA(5)),

	dump_register(DIEPDMA(6)),

	dump_register(DIEPDMA(7)),

	dump_register(DIEPDMA(8)),

	dump_register(DIEPDMA(9)),

	dump_register(DIEPDMA(10)),

	dump_register(DIEPDMA(11)),

	dump_register(DIEPDMA(12)),

	dump_register(DIEPDMA(13)),

	dump_register(DIEPDMA(14)),

	dump_register(DIEPDMA(15)),

	dump_register(DOEPDMA(0)),

	dump_register(DOEPDMA(1)),

	dump_register(DOEPDMA(2)),

	dump_register(DOEPDMA(3)),

	dump_register(DOEPDMA(4)),

	dump_register(DOEPDMA(5)),

	dump_register(DOEPDMA(6)),

	dump_register(DOEPDMA(7)),

	dump_register(DOEPDMA(8)),

	dump_register(DOEPDMA(9)),

	dump_register(DOEPDMA(10)),

	dump_register(DOEPDMA(11)),

	dump_register(DOEPDMA(12)),

	dump_register(DOEPDMA(13)),

	dump_register(DOEPDMA(14)),

	dump_register(DOEPDMA(15)),

	dump_register(DTXFSTS(0)),

	dump_register(DTXFSTS(1)),

	dump_register(DTXFSTS(2)),

	dump_register(DTXFSTS(3)),

	dump_register(DTXFSTS(4)),

	dump_register(DTXFSTS(5)),

	dump_register(DTXFSTS(6)),

	dump_register(DTXFSTS(7)),

	dump_register(DTXFSTS(8)),

	dump_register(DTXFSTS(9)),

	dump_register(DTXFSTS(10)),

	dump_register(DTXFSTS(11)),

	dump_register(DTXFSTS(12)),

	dump_register(DTXFSTS(13)),

	dump_register(DTXFSTS(14)),

	dump_register(DTXFSTS(15)),

	dump_register(PCGCTL),

	dump_register(HCFG),

	dump_register(HFIR),

	dump_register(HFNUM),

	dump_register(HPTXSTS),

	dump_register(HAINT),

	dump_register(HAINTMSK),

	dump_register(HFLBADDR),

	dump_register(HPRT0),

	dump_register(HCCHAR(0)),

	dump_register(HCCHAR(1)),

	dump_register(HCCHAR(2)),

	dump_register(HCCHAR(3)),

	dump_register(HCCHAR(4)),

	dump_register(HCCHAR(5)),

	dump_register(HCCHAR(6)),

	dump_register(HCCHAR(7)),

	dump_register(HCCHAR(8)),

	dump_register(HCCHAR(9)),

	dump_register(HCCHAR(10)),

	dump_register(HCCHAR(11)),

	dump_register(HCCHAR(12)),

	dump_register(HCCHAR(13)),

	dump_register(HCCHAR(14)),

	dump_register(HCCHAR(15)),

	dump_register(HCSPLT(0)),

	dump_register(HCSPLT(1)),

	dump_register(HCSPLT(2)),

	dump_register(HCSPLT(3)),

	dump_register(HCSPLT(4)),

	dump_register(HCSPLT(5)),

	dump_register(HCSPLT(6)),

	dump_register(HCSPLT(7)),

	dump_register(HCSPLT(8)),

	dump_register(HCSPLT(9)),

	dump_register(HCSPLT(10)),

	dump_register(HCSPLT(11)),

	dump_register(HCSPLT(12)),

	dump_register(HCSPLT(13)),

	dump_register(HCSPLT(14)),

	dump_register(HCSPLT(15)),

	dump_register(HCINT(0)),

	dump_register(HCINT(1)),

	dump_register(HCINT(2)),

	dump_register(HCINT(3)),

	dump_register(HCINT(4)),

	dump_register(HCINT(5)),

	dump_register(HCINT(6)),

	dump_register(HCINT(7)),

	dump_register(HCINT(8)),

	dump_register(HCINT(9)),

	dump_register(HCINT(10)),

	dump_register(HCINT(11)),

	dump_register(HCINT(12)),

	dump_register(HCINT(13)),

	dump_register(HCINT(14)),

	dump_register(HCINT(15)),

	dump_register(HCINTMSK(0)),

	dump_register(HCINTMSK(1)),

	dump_register(HCINTMSK(2)),

	dump_register(HCINTMSK(3)),

	dump_register(HCINTMSK(4)),

	dump_register(HCINTMSK(5)),

	dump_register(HCINTMSK(6)),

	dump_register(HCINTMSK(7)),

	dump_register(HCINTMSK(8)),

	dump_register(HCINTMSK(9)),

	dump_register(HCINTMSK(10)),

	dump_register(HCINTMSK(11)),

	dump_register(HCINTMSK(12)),

	dump_register(HCINTMSK(13)),

	dump_register(HCINTMSK(14)),

	dump_register(HCINTMSK(15)),

	dump_register(HCTSIZ(0)),

	dump_register(HCTSIZ(1)),

	dump_register(HCTSIZ(2)),

	dump_register(HCTSIZ(3)),

	dump_register(HCTSIZ(4)),

	dump_register(HCTSIZ(5)),

	dump_register(HCTSIZ(6)),

	dump_register(HCTSIZ(7)),

	dump_register(HCTSIZ(8)),

	dump_register(HCTSIZ(9)),

	dump_register(HCTSIZ(10)),

	dump_register(HCTSIZ(11)),

	dump_register(HCTSIZ(12)),

	dump_register(HCTSIZ(13)),

	dump_register(HCTSIZ(14)),

	dump_register(HCTSIZ(15)),

	dump_register(HCDMA(0)),

	dump_register(HCDMA(1)),

	dump_register(HCDMA(2)),

	dump_register(HCDMA(3)),

	dump_register(HCDMA(4)),

	dump_register(HCDMA(5)),

	dump_register(HCDMA(6)),

	dump_register(HCDMA(7)),

	dump_register(HCDMA(8)),

	dump_register(HCDMA(9)),

	dump_register(HCDMA(10)),

	dump_register(HCDMA(11)),

	dump_register(HCDMA(12)),

	dump_register(HCDMA(13)),

	dump_register(HCDMA(14)),

	dump_register(HCDMA(15)),

	dump_register(HCDMAB(0)),

	dump_register(HCDMAB(1)),

	dump_register(HCDMAB(2)),

	dump_register(HCDMAB(3)),

	dump_register(HCDMAB(4)),

	dump_register(HCDMAB(5)),

	dump_register(HCDMAB(6)),

	dump_register(HCDMAB(7)),

	dump_register(HCDMAB(8)),

	dump_register(HCDMAB(9)),

	dump_register(HCDMAB(10)),

	dump_register(HCDMAB(11)),

	dump_register(HCDMAB(12)),

	dump_register(HCDMAB(13)),

	dump_register(HCDMAB(14)),

	dump_register(HCDMAB(15)),

};



int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)

{

	int			ret;

	struct dentry		*file;



	hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL);

	if (!hsotg->debug_root) {
@@ -403,6 +738,28 @@ int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) 


	/* Add gadget debugfs nodes */

	s3c_hsotg_create_debug(hsotg);



	hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),

								GFP_KERNEL);

	if (!hsotg->regset) {

		ret = -ENOMEM;

		goto err1;

	}



	hsotg->regset->regs = dwc2_regs;

	hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);

	hsotg->regset->base = hsotg->regs;



	file = debugfs_create_regset32("regdump", S_IRUGO, hsotg->debug_root,

								hsotg->regset);

	if (!file) {

		ret = -ENOMEM;

		goto err1;

	}



	return 0;

err1:

	debugfs_remove_recursive(hsotg->debug_root);

err0:

	return ret;

}