diff options
author | Alan Stern <stern@rowland.harvard.edu> | 2012-07-11 19:21:32 +0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-17 03:50:13 +0400 |
commit | 4c53de72109759c931744734ca75f9cecb3baef1 (patch) | |
tree | 0f464052baf26967994146bf3b3716b3dd6e6d35 | |
parent | c83e1a9ff68a6535b81c40dc8fda99348ab480fb (diff) | |
download | linux-4c53de72109759c931744734ca75f9cecb3baef1.tar.xz |
USB: EHCI: add symbolic constants for QHs
This patch (as1568) introduces symbolic constants for some of the
less-frequently used bitfields in the QH structure. This makes the
code a little easier to read and understand.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/usb/host/ehci-dbg.c | 6 | ||||
-rw-r--r-- | drivers/usb/host/ehci-hcd.c | 2 | ||||
-rw-r--r-- | drivers/usb/host/ehci-q.c | 12 | ||||
-rw-r--r-- | drivers/usb/host/ehci.h | 8 |
4 files changed, 17 insertions, 11 deletions
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 7561966fbdc4..97338abff296 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -404,9 +404,9 @@ struct debug_buffer { #define speed_char(info1) ({ char tmp; \ switch (info1 & (3 << 12)) { \ - case 0 << 12: tmp = 'f'; break; \ - case 1 << 12: tmp = 'l'; break; \ - case 2 << 12: tmp = 'h'; break; \ + case QH_FULL_SPEED: tmp = 'f'; break; \ + case QH_LOW_SPEED: tmp = 'l'; break; \ + case QH_HIGH_SPEED: tmp = 'h'; break; \ default: tmp = '?'; break; \ }; tmp; }) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 1f8f792eec86..cdb15769468a 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -667,7 +667,7 @@ static int ehci_init(struct usb_hcd *hcd) hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma); hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD); #if defined(CONFIG_PPC_PS3) - hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */ + hw->hw_info1 |= cpu_to_hc32(ehci, QH_INACTIVATE); #endif hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT); hw->hw_qtd_next = EHCI_LIST_END(ehci); diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 7d117bbffac1..156504787711 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -100,7 +100,7 @@ qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd) * and set the pseudo-toggle in udev. Only usb_clear_halt() will * ever clear it. */ - if (!(hw->hw_info1 & cpu_to_hc32(ehci, 1 << 14))) { + if (!(hw->hw_info1 & cpu_to_hc32(ehci, QH_TOGGLE_CTL))) { unsigned is_out, epnum; is_out = qh->is_out; @@ -886,7 +886,7 @@ qh_make ( /* using TT? */ switch (urb->dev->speed) { case USB_SPEED_LOW: - info1 |= (1 << 12); /* EPS "low" */ + info1 |= QH_LOW_SPEED; /* FALL THROUGH */ case USB_SPEED_FULL: @@ -894,8 +894,8 @@ qh_make ( if (type != PIPE_INTERRUPT) info1 |= (EHCI_TUNE_RL_TT << 28); if (type == PIPE_CONTROL) { - info1 |= (1 << 27); /* for TT */ - info1 |= 1 << 14; /* toggle from qtd */ + info1 |= QH_CONTROL_EP; /* for TT */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ } info1 |= maxp << 16; @@ -920,11 +920,11 @@ qh_make ( break; case USB_SPEED_HIGH: /* no TT involved */ - info1 |= (2 << 12); /* EPS "high" */ + info1 |= QH_HIGH_SPEED; if (type == PIPE_CONTROL) { info1 |= (EHCI_TUNE_RL_HS << 28); info1 |= 64 << 16; /* usb2 fixed maxpacket */ - info1 |= 1 << 14; /* toggle from qtd */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ info2 |= (EHCI_TUNE_MULT_HS << 30); } else if (type == PIPE_BULK) { info1 |= (EHCI_TUNE_RL_HS << 28); diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index f7a59f5d70c6..195449db1b18 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -324,7 +324,13 @@ union ehci_shadow { struct ehci_qh_hw { __hc32 hw_next; /* see EHCI 3.6.1 */ __hc32 hw_info1; /* see EHCI 3.6.2 */ -#define QH_HEAD 0x00008000 +#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ +#define QH_HEAD (1 << 15) /* Head of async reclamation list */ +#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ +#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ +#define QH_LOW_SPEED (1 << 12) +#define QH_FULL_SPEED (0 << 12) +#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */ __hc32 hw_info2; /* see EHCI 3.6.2 */ #define QH_SMASK 0x000000ff #define QH_CMASK 0x0000ff00 |