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usb: host: xhci: rcar: retire use of xhci_plat_type_is() 

We're preparing to remove xhci_plat_type_is() in
favor of a better approach where we define function
pointers ahead of time. This will let us make
assumptions about which platforms we're running on
and which platform-specific functions we should call.

Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
[delete extra comma in function parameters -Mathias]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi 2016-04-22 13:17:12 +03:00 committed by Greg Kroah-Hartman
parent 78140156f4
commit 2dc240a330
1 changed files with 33 additions and 1 deletions
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34
drivers/usb/host/xhci-rcar.c
View File

@ -11,6 +11,7 @@
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/usb/phy.h>
#include "xhci.h"
@ -76,6 +77,24 @@ static void xhci_rcar_start_gen2(struct usb_hcd *hcd)
writel(RCAR_USB3_TX_POL_VAL, hcd->regs + RCAR_USB3_TX_POL);
}
static int xhci_rcar_is_gen2(struct device *dev)
{
struct device_node *node = dev->of_node;
return of_device_is_compatible(node, "renesas,xhci-r8a7790") ||
of_device_is_compatible(node, "renesas,xhci-r8a7791") ||
of_device_is_compatible(node, "renesas,xhci-r8a7793") ||
of_device_is_compatible(node, "renensas,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,rcar-gen3-xhci");
}
void xhci_rcar_start(struct usb_hcd *hcd)
{
u32 temp;
@ -85,7 +104,7 @@ void xhci_rcar_start(struct usb_hcd *hcd)
temp = readl(hcd->regs + RCAR_USB3_INT_ENA);
temp |= RCAR_USB3_INT_ENA_VAL;
writel(temp, hcd->regs + RCAR_USB3_INT_ENA);
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2))
if (xhci_rcar_is_gen2(hcd->self.controller))
xhci_rcar_start_gen2(hcd);
}
}
@ -156,9 +175,22 @@ static int xhci_rcar_download_firmware(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().
*/
if (xhci_rcar_is_gen2(hcd->self.controller) ||
xhci_rcar_is_gen3(hcd->self.controller))
xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
return xhci_rcar_download_firmware(hcd);
}