From: Manjunath Goudar Date: Tue, 28 May 2013 13:04:50 +0000 (+0530) Subject: USB: OHCI: Generic changes to make ohci-pci a separate driver X-Git-Tag: firefly_0821_release~176^2~5847^2~83 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2621d0119e574f12496c4ab731265d5777cb6a18;p=firefly-linux-kernel-4.4.55.git USB: OHCI: Generic changes to make ohci-pci a separate driver Note that this changes is part of separating the ohci pci host controller driver from ohci-hcd host code. This contains : -Moved sb800_prefetch() function from ohci-pci.c to pci-quirks.c file and EXPORTed, this is part of the effort to move the ohci pci related code to generic pci code. -Passed "device" argument instead of "ohci_hcd" in sb800_prefetch() function to avoid extra include file in pci-quirks.c. V2: -Passed "device" argment instead of "pci_dev", then we use to_pci_dev() to get the "pci_dev" structure. Signed-off-by: Manjunath Goudar Acked-by: Alan Stern Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 20a632d09f93..93d2f3edd19d 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -80,15 +80,6 @@ static const char hcd_name [] = "ohci_hcd"; static void ohci_dump (struct ohci_hcd *ohci, int verbose); static void ohci_stop (struct usb_hcd *hcd); -#ifdef CONFIG_PCI -static void sb800_prefetch(struct ohci_hcd *ohci, int on); -#else -static inline void sb800_prefetch(struct ohci_hcd *ohci, int on) -{ - return; -} -#endif - #include "ohci-hub.c" #include "ohci-dbg.c" diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index 2c27a5fc4bfe..c3fa93638ea6 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -168,19 +168,6 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd) return 0; } -static void sb800_prefetch(struct ohci_hcd *ohci, int on) -{ - struct pci_dev *pdev; - u16 misc; - - pdev = to_pci_dev(ohci_to_hcd(ohci)->self.controller); - pci_read_config_word(pdev, 0x50, &misc); - if (on == 0) - pci_write_config_word(pdev, 0x50, misc & 0xfcff); - else - pci_write_config_word(pdev, 0x50, misc | 0x0300); -} - /* List of quirks for OHCI */ static const struct pci_device_id ohci_pci_quirks[] = { { diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 88731b7c5f42..df4a6707322d 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -41,6 +41,7 @@ finish_urb(struct ohci_hcd *ohci, struct urb *urb, int status) __releases(ohci->lock) __acquires(ohci->lock) { + struct device *dev = ohci_to_hcd(ohci)->self.controller; // ASSERT (urb->hcpriv != 0); urb_free_priv (ohci, urb->hcpriv); @@ -55,7 +56,7 @@ __acquires(ohci->lock) if (quirk_amdiso(ohci)) usb_amd_quirk_pll_enable(); if (quirk_amdprefetch(ohci)) - sb800_prefetch(ohci, 0); + sb800_prefetch(dev, 0); } break; case PIPE_INTERRUPT: @@ -580,6 +581,7 @@ static void td_submit_urb ( struct urb *urb ) { struct urb_priv *urb_priv = urb->hcpriv; + struct device *dev = ohci_to_hcd(ohci)->self.controller; dma_addr_t data; int data_len = urb->transfer_buffer_length; int cnt = 0; @@ -689,7 +691,7 @@ static void td_submit_urb ( if (quirk_amdiso(ohci)) usb_amd_quirk_pll_disable(); if (quirk_amdprefetch(ohci)) - sb800_prefetch(ohci, 1); + sb800_prefetch(dev, 1); } periodic = ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs++ == 0 && ohci_to_hcd(ohci)->self.bandwidth_int_reqs == 0; diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 4c338ec03a07..b9848e4d3d44 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -91,6 +91,19 @@ static struct amd_chipset_info { static DEFINE_SPINLOCK(amd_lock); +void sb800_prefetch(struct device *dev, int on) +{ + u16 misc; + struct pci_dev *pdev = to_pci_dev(dev); + + pci_read_config_word(pdev, 0x50, &misc); + if (on == 0) + pci_write_config_word(pdev, 0x50, misc & 0xfcff); + else + pci_write_config_word(pdev, 0x50, misc | 0x0300); +} +EXPORT_SYMBOL_GPL(sb800_prefetch); + int usb_amd_find_chipset_info(void) { u8 rev = 0; diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h index 7f69a39163ce..4b8a2092432f 100644 --- a/drivers/usb/host/pci-quirks.h +++ b/drivers/usb/host/pci-quirks.h @@ -11,11 +11,13 @@ void usb_amd_quirk_pll_enable(void); bool usb_is_intel_switchable_xhci(struct pci_dev *pdev); void usb_enable_xhci_ports(struct pci_dev *xhci_pdev); void usb_disable_xhci_ports(struct pci_dev *xhci_pdev); +void sb800_prefetch(struct device *dev, int on); #else static inline void usb_amd_quirk_pll_disable(void) {} static inline void usb_amd_quirk_pll_enable(void) {} static inline void usb_amd_dev_put(void) {} static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {} +static inline void sb800_prefetch(struct device *dev, int on) {} #endif /* CONFIG_PCI */ #endif /* __LINUX_USB_PCI_QUIRKS_H */