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usb: cdnsp: Fix issue with detecting USB 3.2 speed

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commit 2852788cfbe9ca1ab68509d65804413871f741f9 upstream.

Patch adds support for detecting SuperSpeedPlus Gen1 x2 and
SuperSpeedPlus Gen2 x2 speed.

Fixes: 3d82904559 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/PH7PR07MB95387AD98EDCA695FECE52BADD96A@PH7PR07MB9538.namprd07.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pawel Laszczak
2025-05-13 06:54:03 +00:00
committed by Greg Kroah-Hartman
parent 81dc3db4c3
commit c40b5e0aad
2 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/usb/cdns3/cdnsp-gadget.c
View File

@@ -28,7 +28,8 @@
unsigned int cdnsp_port_speed(unsigned int port_status) unsigned int cdnsp_port_speed(unsigned int port_status)
{ {
/*Detect gadget speed based on PORTSC register*/ /*Detect gadget speed based on PORTSC register*/
if (DEV_SUPERSPEEDPLUS(port_status)) if (DEV_SUPERSPEEDPLUS(port_status) ||
DEV_SSP_GEN1x2(port_status) || DEV_SSP_GEN2x2(port_status))
return USB_SPEED_SUPER_PLUS; return USB_SPEED_SUPER_PLUS;
else if (DEV_SUPERSPEED(port_status)) else if (DEV_SUPERSPEED(port_status))
return USB_SPEED_SUPER; return USB_SPEED_SUPER;

4
drivers/usb/cdns3/cdnsp-gadget.h
View File

@@ -285,11 +285,15 @@ struct cdnsp_port_regs {
#define XDEV_HS (0x3 << 10) #define XDEV_HS (0x3 << 10)
#define XDEV_SS (0x4 << 10) #define XDEV_SS (0x4 << 10)
#define XDEV_SSP (0x5 << 10) #define XDEV_SSP (0x5 << 10)
#define XDEV_SSP1x2 (0x6 << 10)
#define XDEV_SSP2x2 (0x7 << 10)
#define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0 << 10)) #define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0 << 10))
#define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS) #define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS)
#define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS) #define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS)
#define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS) #define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS)
#define DEV_SUPERSPEEDPLUS(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP) #define DEV_SUPERSPEEDPLUS(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP)
#define DEV_SSP_GEN1x2(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP1x2)
#define DEV_SSP_GEN2x2(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP2x2)
#define DEV_SUPERSPEED_ANY(p) (((p) & DEV_SPEED_MASK) >= XDEV_SS) #define DEV_SUPERSPEED_ANY(p) (((p) & DEV_SPEED_MASK) >= XDEV_SS)
#define DEV_PORT_SPEED(p) (((p) >> 10) & 0x0f) #define DEV_PORT_SPEED(p) (((p) >> 10) & 0x0f)
/* Port Link State Write Strobe - set this when changing link state */ /* Port Link State Write Strobe - set this when changing link state */