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Commit dc1c70a7 authored by Felipe Balbi's avatar Felipe Balbi Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: convert structures into bitshifts 



our parameter structures need to be written to
HW, so instead of assuming little endian, we
convert those into bit shifts.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent aabb7075

drivers/usb/dwc3/ep0.c

+2 −4
Original line number Diff line number Diff line
@@ -103,10 +103,8 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, 
	dwc3_trb_to_hw(&trb, trb_hw);



	memset(&params, 0, sizeof(params));

	params.param0.depstrtxfer.transfer_desc_addr_high =

		upper_32_bits(dwc->ep0_trb_addr);

	params.param1.depstrtxfer.transfer_desc_addr_low =

		lower_32_bits(dwc->ep0_trb_addr);

	params.param0 = upper_32_bits(dwc->ep0_trb_addr);

	params.param1 = lower_32_bits(dwc->ep0_trb_addr);



	ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,

			DWC3_DEPCMD_STARTTRANSFER, &params);

drivers/usb/dwc3/gadget.c

+19 −21
Original line number Diff line number Diff line
@@ -158,12 +158,12 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, 


	dev_vdbg(dwc->dev, "%s: cmd '%s' params %08x %08x %08x\n",

			dep->name,

			dwc3_gadget_ep_cmd_string(cmd), params->param0.raw,

			params->param1.raw, params->param2.raw);

			dwc3_gadget_ep_cmd_string(cmd), params->param0,

			params->param1, params->param2);



	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0.raw);

	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1.raw);

	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2.raw);

	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0);

	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1);

	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2);



	dwc3_writel(dwc->regs, DWC3_DEPCMD(ep), cmd | DWC3_DEPCMD_CMDACT);

	do {
@@ -257,21 +257,21 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, 


	memset(&params, 0x00, sizeof(params));



	params.param0.depcfg.ep_type = usb_endpoint_type(desc);

	params.param0.depcfg.max_packet_size = usb_endpoint_maxp(desc);

	params.param0.depcfg.burst_size = dep->endpoint.maxburst;

	params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc))

		| DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc))

		| DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst);



	params.param1.depcfg.xfer_complete_enable = true;

	params.param1.depcfg.xfer_not_ready_enable = true;

	params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN

		| DWC3_DEPCFG_XFER_NOT_READY_EN;



	if (usb_endpoint_xfer_bulk(desc) && dep->endpoint.max_streams) {

		params.param1.depcfg.stream_capable = true;

		params.param1.depcfg.stream_event_enable = true;

		params.param1 |= DWC3_DEPCFG_STREAM_CAPABLE

			| DWC3_DEPCFG_STREAM_EVENT_EN;

		dep->stream_capable = true;

	}



	if (usb_endpoint_xfer_isoc(desc))

		params.param1.depcfg.xfer_in_progress_enable = true;

		params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN;



	/*

	 * We are doing 1:1 mapping for endpoints, meaning
@@ -279,17 +279,17 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, 
	 * so on. We consider the direction bit as part of the physical

	 * endpoint number. So USB endpoint 0x81 is 0x03.

	 */

	params.param1.depcfg.ep_number = dep->number;

	params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number);



	/*

	 * We must use the lower 16 TX FIFOs even though

	 * HW might have more

	 */

	if (dep->direction)

		params.param0.depcfg.fifo_number = dep->number >> 1;

		params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1);



	if (desc->bInterval) {

		params.param1.depcfg.binterval_m1 = desc->bInterval - 1;

		params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(desc->bInterval - 1);

		dep->interval = 1 << (desc->bInterval - 1);

	}
@@ -303,7 +303,7 @@ static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep) 


	memset(&params, 0x00, sizeof(params));



	params.param0.depxfercfg.number_xfer_resources = 1;

	params.param0 = DWC3_DEPXFERCFG_NUM_XFER_RES(1);



	return dwc3_send_gadget_ep_cmd(dwc, dep->number,

			DWC3_DEPCMD_SETTRANSFRESOURCE, &params);
@@ -719,10 +719,8 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, 
	}



	memset(&params, 0, sizeof(params));

	params.param0.depstrtxfer.transfer_desc_addr_high =

		upper_32_bits(req->trb_dma);

	params.param1.depstrtxfer.transfer_desc_addr_low =

		lower_32_bits(req->trb_dma);

	params.param0 = upper_32_bits(req->trb_dma);

	params.param1 = lower_32_bits(req->trb_dma);



	if (start_new)

		cmd = DWC3_DEPCMD_STARTTRANSFER;

drivers/usb/dwc3/gadget.h

+27 −112
Original line number Diff line number Diff line
@@ -47,120 +47,35 @@ struct dwc3; 
#define to_dwc3_ep(ep)		(container_of(ep, struct dwc3_ep, endpoint))

#define gadget_to_dwc(g)	(container_of(g, struct dwc3, gadget))



/**

 * struct dwc3_gadget_ep_depcfg_param1 - DEPCMDPAR0 for DEPCFG command

 * @interrupt_number: self-explanatory

 * @reserved7_5: set to zero

 * @xfer_complete_enable: event generated when transfer completed

 * @xfer_in_progress_enable: event generated when transfer in progress

 * @xfer_not_ready_enable: event generated when transfer not read

 * @fifo_error_enable: generates events when FIFO Underrun (IN eps)

 *	or FIFO Overrun (OUT) eps

 * @reserved_12: set to zero

 * @stream_event_enable: event generated on stream

 * @reserved14_15: set to zero

 * @binterval_m1: bInterval minus 1

 * @stream_capable: this EP is capable of handling streams

 * @ep_number: self-explanatory

 * @bulk_based: Set to ‘1’ if this isochronous endpoint represents a bulk

 *	data stream that ignores the relationship of bus time to the

 *	intervals programmed in TRBs.

 * @fifo_based: Set to ‘1’ if this isochronous endpoint represents a

 *	FIFO-based data stream where TRBs have fixed values and are never

 *	written back by the core.

 */

struct dwc3_gadget_ep_depcfg_param1 {

	u32	interrupt_number:5;

	u32	reserved7_5:3;		/* set to zero */

	u32	xfer_complete_enable:1;

	u32	xfer_in_progress_enable:1;

	u32	xfer_not_ready_enable:1;

	u32	fifo_error_enable:1;	/* IN-underrun, OUT-overrun */

	u32	reserved12:1;		/* set to zero */

	u32	stream_event_enable:1;

	u32	reserved14_15:2;

	u32	binterval_m1:8;		/* bInterval minus 1 */

	u32	stream_capable:1;

	u32	ep_number:5;

	u32	bulk_based:1;

	u32	fifo_based:1;

} __packed;



/**

 * struct dwc3_gadget_ep_depcfg_param0 - Parameter 0 for DEPCFG

 * @reserved0: set to zero

 * @ep_type: Endpoint Type (control, bulk, iso, interrupt)

 * @max_packet_size: max packet size in bytes

 * @reserved16_14: set to zero

 * @fifo_number: self-explanatory

 * @burst_size: burst size minus 1

 * @data_sequence_number: Must be 0 when an endpoint is initially configured

 *	May be non-zero when an endpoint is configured after a power transition

 *	that requires a save/restore.

 * @ignore_sequence_number: Set to ‘1’ to avoid resetting the sequence

 *	number. This setting is used by software to modify the DEPEVTEN

 *	event enable bits without modifying other endpoint settings.

 */

struct dwc3_gadget_ep_depcfg_param0 {

	u32	reserved0:1;

	u32	ep_type:2;

	u32	max_packet_size:11;

	u32	reserved16_14:3;

	u32	fifo_number:5;

	u32	burst_size:4;

	u32	data_sequence_number:5;

	u32	ignore_sequence_number:1;

} __packed;



/**

 * struct dwc3_gadget_ep_depxfercfg_param0 - Parameter 0 of DEPXFERCFG

 * @number_xfer_resources: Defines the number of Transfer Resources allocated

 *	to this endpoint.  This field must be set to 1.

 * @reserved16_31: set to zero;

 */

struct dwc3_gadget_ep_depxfercfg_param0 {

	u32		number_xfer_resources:16;

	u32		reserved16_31:16;

} __packed;



/**

 * struct dwc3_gadget_ep_depstrtxfer_param1 - Parameter 1 of DEPSTRTXFER

 * @transfer_desc_addr_low: Indicates the lower 32 bits of the external

 *	memory's start address for the transfer descriptor. Because TRBs

 *	must be aligned to a 16-byte boundary, the lower 4 bits of this

 *	address must be 0.

 */

struct dwc3_gadget_ep_depstrtxfer_param1 {

	u32		transfer_desc_addr_low;

} __packed;



/**

 * struct dwc3_gadget_ep_depstrtxfer_param1 - Parameter 1 of DEPSTRTXFER

 * @transfer_desc_addr_high: Indicates the higher 32 bits of the external

 *	memory’s start address for the transfer descriptor.

 */

struct dwc3_gadget_ep_depstrtxfer_param0 {

	u32		transfer_desc_addr_high;

} __packed;

/* DEPCFG parameter 1 */

#define DWC3_DEPCFG_INT_NUM(n)		((n) << 0)

#define DWC3_DEPCFG_XFER_COMPLETE_EN	(1 << 8)

#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN	(1 << 9)

#define DWC3_DEPCFG_XFER_NOT_READY_EN	(1 << 10)

#define DWC3_DEPCFG_FIFO_ERROR_EN	(1 << 11)

#define DWC3_DEPCFG_STREAM_EVENT_EN	(1 << 13)

#define DWC3_DEPCFG_BINTERVAL_M1(n)	((n) << 16)

#define DWC3_DEPCFG_STREAM_CAPABLE	(1 << 24)

#define DWC3_DEPCFG_EP_NUMBER(n)	((n) << 25)

#define DWC3_DEPCFG_BULK_BASED		(1 << 30)

#define DWC3_DEPCFG_FIFO_BASED		(1 << 31)



/* DEPCFG parameter 0 */

#define DWC3_DEPCFG_EP_TYPE(n)		((n) << 1)

#define DWC3_DEPCFG_MAX_PACKET_SIZE(n)	((n) << 3)

#define DWC3_DEPCFG_FIFO_NUMBER(n)	((n) << 17)

#define DWC3_DEPCFG_BURST_SIZE(n)	((n) << 22)

#define DWC3_DEPCFG_DATA_SEQ_NUM(n)	((n) << 26)

#define DWC3_DEPCFG_IGN_SEQ_NUM		(1 << 31)



/* DEPXFERCFG parameter 0 */

#define DWC3_DEPXFERCFG_NUM_XFER_RES(n)	((n) & 0xffff)



struct dwc3_gadget_ep_cmd_params {

	union {

		u32	raw;

	} param2;



	union {

		u32	raw;

		struct dwc3_gadget_ep_depcfg_param1 depcfg;

		struct dwc3_gadget_ep_depstrtxfer_param1 depstrtxfer;

	} param1;



	union {

		u32	raw;

		struct dwc3_gadget_ep_depcfg_param0 depcfg;

		struct dwc3_gadget_ep_depxfercfg_param0 depxfercfg;

		struct dwc3_gadget_ep_depstrtxfer_param0 depstrtxfer;

	} param0;

} __packed;

	u32	param2;

	u32	param1;

	u32	param0;

};



/* -------------------------------------------------------------------------- */