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usb: xhci: convert to HCS_MAX_PORTS()

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Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Chunfeng Yun 2020-09-08 18:59:58 +02:00 committed by Marek Vasut
parent 740820519c
commit 86d1fa17fb
2 changed files with 1 additions and 4 deletions
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3
drivers/usb/host/xhci.c
View file

@ -1257,8 +1257,7 @@ static int xhci_lowlevel_init(struct xhci_ctrl *ctrl)
return -ENOMEM;
reg = xhci_readl(&hccr->cr_hcsparams1);
descriptor.hub.bNbrPorts = ((reg & HCS_MAX_PORTS_MASK) >>
HCS_MAX_PORTS_SHIFT);
descriptor.hub.bNbrPorts = HCS_MAX_PORTS(reg);
printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
/* Port Indicators */

2
include/usb/xhci.h
View file

@ -101,8 +101,6 @@ struct xhci_hccr {
/* bits 8:18, Max Interrupters */
#define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff)
/* bits 24:31, Max Ports - max value is 0x7F = 127 ports */
#define HCS_MAX_PORTS_SHIFT 24
#define HCS_MAX_PORTS_MASK (0xff << HCS_MAX_PORTS_SHIFT)
#define HCS_MAX_PORTS(p) (((p) >> 24) & 0xff)
/* HCSPARAMS2 - hcs_params2 - bitmasks */