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Commit 2195e3af authored by Chris Brandt's avatar Chris Brandt Committed by Greg Kroah-Hartman
Browse files

usb: renesas_usbhs: add support for CNEN bit 



For some SoC, CNEN must be set for USB Device mode operation.

Signed-off-by: default avatarChris Brandt <chris.brandt@renesas.com>
Reviewed-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 97a79684

drivers/usb/renesas_usbhs/common.c

+6 −0
Original line number Diff line number Diff line
@@ -114,6 +114,12 @@ void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable) 
	u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;

	u16 val  = HSE | USBE;



	/* CNEN bit is required for function operation */

	if (usbhs_get_dparam(priv, has_cnen)) {

		mask |= CNEN;

		val  |= CNEN;

	}



	/*

	 * if enable

	 *

drivers/usb/renesas_usbhs/common.h

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ struct usbhs_priv; 


/* SYSCFG */

#define SCKE	(1 << 10)	/* USB Module Clock Enable */

#define CNEN	(1 << 8)	/* Single-ended receiver operation Enable */

#define HSE	(1 << 7)	/* High-Speed Operation Enable */

#define DCFM	(1 << 6)	/* Controller Function Select */

#define DRPD	(1 << 5)	/* D+ Line/D- Line Resistance Control */

include/linux/usb/renesas_usbhs.h

+1 −0
Original line number Diff line number Diff line
@@ -190,6 +190,7 @@ struct renesas_usbhs_driver_param { 
	u32 has_sudmac:1; /* for SUDMAC */

	u32 has_usb_dmac:1; /* for USB-DMAC */

	u32 runtime_pwctrl:1;

	u32 has_cnen:1;

#define USBHS_USB_DMAC_XFER_SIZE	32	/* hardcode the xfer size */

};