Commit 139fae7a authored by Artur Petrosyan's avatar Artur Petrosyan Committed by Greg Kroah-Hartman
Browse files

usb: dwc2: Update port suspend/resume function definitions. 



Earlier "dwc2_port_suspend()" and "dwc2_port_resume()" functions
were implemented without proper description and host or device mode
difference.

- Added "dwc2_port_suspend" and "dwc2_port_resume" functions to
  "core.h" header file.

- Updated function description in documentation.

Acked-by: default avatarMinas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: default avatarArtur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094502.61D18A0232@mailhost.synopsys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b77b0d00

drivers/usb/dwc2/core.h

+4 −0
Original line number Diff line number Diff line
@@ -1470,6 +1470,8 @@ void dwc2_hcd_connect(struct dwc2_hsotg *hsotg); 
void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force);

void dwc2_hcd_start(struct dwc2_hsotg *hsotg);

int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup);

void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex);

void dwc2_port_resume(struct dwc2_hsotg *hsotg);

int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg);

int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg);

int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg);
@@ -1493,6 +1495,8 @@ static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {} 
static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {}

static inline int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup)

{ return 0; }

static inline void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) {}

static inline void dwc2_port_resume(struct dwc2_hsotg *hsotg) {}

static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg)

{ return 0; }

static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg)

drivers/usb/dwc2/hcd.c

+19 −6
Original line number Diff line number Diff line
@@ -56,8 +56,6 @@ 
#include "core.h"

#include "hcd.h"



static void dwc2_port_resume(struct dwc2_hsotg *hsotg);



/*

 * =========================================================================

 *  Host Core Layer Functions
@@ -3277,8 +3275,16 @@ static int dwc2_host_is_b_hnp_enabled(struct dwc2_hsotg *hsotg) 
	return hcd->self.b_hnp_enable;

}



/* Must NOT be called with interrupt disabled or spinlock held */

static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)

/**

 * dwc2_port_suspend() - Put controller in suspend mode for host.

 *

 * @hsotg: Programming view of the DWC_otg controller

 * @windex: The control request wIndex field

 *

 * This function is for entering Host mode suspend.

 * Must NOT be called with interrupt disabled or spinlock held.

 */

void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)

{

	unsigned long flags;

	u32 hprt0;
@@ -3328,8 +3334,15 @@ static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) 
	}

}



/* Must NOT be called with interrupt disabled or spinlock held */

static void dwc2_port_resume(struct dwc2_hsotg *hsotg)

/**

 * dwc2_port_resume() - Exit controller from suspend mode for host.

 *

 * @hsotg: Programming view of the DWC_otg controller

 *

 * This function is for exiting Host mode suspend.

 * Must NOT be called with interrupt disabled or spinlock held.

 */

void dwc2_port_resume(struct dwc2_hsotg *hsotg)

{

	unsigned long flags;

	u32 hprt0;