openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

usb: host: xhci-rcar: Use xhci_plat_priv.quirks instead of code settings 

This patch uses xhci_plat_priv.quirks to simplify. The previous
code had conditions to set some quirks in xhci_rcar_init_quirk().
But, the xhci_rcar_init_quirk() is called at the same conditions.
So, no behavior change.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1567425698-27560-4-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2019-09-02 21:01:38 +09:00 committed by Greg Kroah-Hartman
parent ed056203fa
commit ee6754ace1
2 changed files with 14 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/usb/host/xhci-rcar.c
View File

@ -107,15 +107,6 @@ static int xhci_rcar_is_gen2(struct device *dev)
of_device_is_compatible(node, "renesas,rcar-gen2-xhci");
}
static int xhci_rcar_is_gen3(struct device *dev)
{
struct device_node *node = dev->of_node;
return of_device_is_compatible(node, "renesas,xhci-r8a7795") ||
of_device_is_compatible(node, "renesas,xhci-r8a7796") ||
of_device_is_compatible(node, "renesas,rcar-gen3-xhci");
}
void xhci_rcar_start(struct usb_hcd *hcd)
{
u32 temp;
@ -226,32 +217,13 @@ static bool xhci_rcar_wait_for_pll_active(struct usb_hcd *hcd)
/* This function needs to initialize a "phy" of usb before */
int xhci_rcar_init_quirk(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
/* If hcd->regs is NULL, we don't just call the following function */
if (!hcd->regs)
return 0;
/*
* On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set
* to 1. However, these SoCs don't support 64-bit address memory
* pointers. So, this driver clears the AC64 bit of xhci->hcc_params
* to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in
* xhci_gen_setup().
*
* And, since the firmware/internal CPU control the USBSTS.STS_HALT
* and the process speed is down when the roothub port enters U3,
* long delay for the handshake of STS_HALT is neeed in xhci_suspend().
*/
if (xhci_rcar_is_gen2(hcd->self.controller) ||
xhci_rcar_is_gen3(hcd->self.controller)) {
xhci->quirks |= XHCI_NO_64BIT_SUPPORT | XHCI_SLOW_SUSPEND;
}
if (!xhci_rcar_wait_for_pll_active(hcd))
return -ETIMEDOUT;
xhci->quirks |= XHCI_TRUST_TX_LENGTH;
return xhci_rcar_download_firmware(hcd);
}

14
drivers/usb/host/xhci-rcar.h
View File

@ -32,8 +32,22 @@ static inline int xhci_rcar_resume_quirk(struct usb_hcd *hcd)
}
#endif
/*
* On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set
* to 1. However, these SoCs don't support 64-bit address memory
* pointers. So, this driver clears the AC64 bit of xhci->hcc_params
* to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in
* xhci_gen_setup() by using the XHCI_NO_64BIT_SUPPORT quirk.
*
* And, since the firmware/internal CPU control the USBSTS.STS_HALT
* and the process speed is down when the roothub port enters U3,
* long delay for the handshake of STS_HALT is neeed in xhci_suspend()
* by using the XHCI_SLOW_SUSPEND quirk.
*/
#define SET_XHCI_PLAT_PRIV_FOR_RCAR(firmware) \
.firmware_name = firmware, \
.quirks = XHCI_NO_64BIT_SUPPORT | XHCI_TRUST_TX_LENGTH | \
XHCI_SLOW_SUSPEND, \
.init_quirk = xhci_rcar_init_quirk, \
.plat_start = xhci_rcar_start, \
.resume_quirk = xhci_rcar_resume_quirk,