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usb: host: xhci-plat: add support for the R-Car H3 xHCI controllers 

The R-Car H3 has two xHCI controllers. This SoC is compatible with
R-Car Gen2 SoCs, however this SoC doesn't need some specific registers
setting, and need a new firmware.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2015-11-24 13:09:53 +02:00 committed by Greg Kroah-Hartman
parent 82487b7148
commit 526a240f61
5 changed files with 23 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/usb/usb-xhci.txt
View File

@ -3,8 +3,8 @@ USB xHCI controllers
Required properties:
- compatible: should be one of "generic-xhci",
"marvell,armada-375-xhci", "marvell,armada-380-xhci",
"renesas,xhci-r8a7790", "renesas,xhci-r8a7791", "renesas,xhci-r8a7793"
(deprecated: "xhci-platform").
"renesas,xhci-r8a7790", "renesas,xhci-r8a7791", "renesas,xhci-r8a7793",
"renesas,xhci-r8a7795" (deprecated: "xhci-platform").
- reg: should contain address and length of the standard XHCI
register set for the device.
- interrupts: one XHCI interrupt should be described here.

14
drivers/usb/host/xhci-plat.c
View File

@ -52,7 +52,8 @@ static int xhci_plat_setup(struct usb_hcd *hcd)
{
int ret;
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2)) {
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3)) {
ret = xhci_rcar_init_quirk(hcd);
if (ret)
return ret;
@ -63,7 +64,8 @@ static int xhci_plat_setup(struct usb_hcd *hcd)
static int xhci_plat_start(struct usb_hcd *hcd)
{
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2))
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3))
xhci_rcar_start(hcd);
return xhci_run(hcd);
@ -79,6 +81,11 @@ static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
};
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
.type = XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3,
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2,
};
static const struct of_device_id usb_xhci_of_match[] = {
{
.compatible = "generic-xhci",
@ -99,6 +106,9 @@ static const struct of_device_id usb_xhci_of_match[] = {
}, {
.compatible = "renesas,xhci-r8a7793",
.data = &xhci_plat_renesas_rcar_gen2,
}, {
.compatible = "renesas,xhci-r8a7795",
.data = &xhci_plat_renesas_rcar_gen3,
}, {
},
};

1
drivers/usb/host/xhci-plat.h
View File

@ -16,6 +16,7 @@
enum xhci_plat_type {
XHCI_PLAT_TYPE_MARVELL_ARMADA,
XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2,
XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3,
};
struct xhci_plat_priv {

7
drivers/usb/host/xhci-rcar.c
View File

@ -17,7 +17,14 @@
#include "xhci-plat.h"
#include "xhci-rcar.h"
/*
* - The V2 firmware is possible to use on R-Car Gen2. However, the V2 causes
* performance degradation. So, this driver continues to use the V1 if R-Car
* Gen2.
* - The V1 firmware is impossible to use on R-Car Gen3.
*/
MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V1);
MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V2);
/*** Register Offset ***/
#define RCAR_USB3_INT_ENA 0x224 /* Interrupt Enable */

1
drivers/usb/host/xhci-rcar.h
View File

@ -12,6 +12,7 @@
#define _XHCI_RCAR_H
#define XHCI_RCAR_FIRMWARE_NAME_V1 "r8a779x_usb3_v1.dlmem"
#define XHCI_RCAR_FIRMWARE_NAME_V2 "r8a779x_usb3_v2.dlmem"
#if IS_ENABLED(CONFIG_USB_XHCI_RCAR)
void xhci_rcar_start(struct usb_hcd *hcd);