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usb: host: xhci-rcar: Change code for new SoCs 

This patch changes code to ease the addition of next generation SoCs.

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 13:09:51 +02:00 committed by Greg Kroah-Hartman
parent e93272fe3c
commit 9bf9d9d600
3 changed files with 26 additions and 14 deletions
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1
drivers/usb/host/xhci-plat.c
View File

@ -76,6 +76,7 @@ static const struct xhci_plat_priv xhci_plat_marvell_armada = {
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
.type = XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2,
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
};
static const struct of_device_id usb_xhci_of_match[] = {

37
drivers/usb/host/xhci-rcar.c
View File

@ -14,10 +14,10 @@
#include <linux/usb/phy.h>
#include "xhci.h"
#include "xhci-plat.h"
#include "xhci-rcar.h"
#define FIRMWARE_NAME "r8a779x_usb3_v1.dlmem"
MODULE_FIRMWARE(FIRMWARE_NAME);
MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V1);
/*** Register Offset ***/
#define RCAR_USB3_INT_ENA 0x224 /* Interrupt Enable */
@ -56,6 +56,19 @@ MODULE_FIRMWARE(FIRMWARE_NAME);
#define RCAR_USB3_RX_POL_VAL BIT(21)
#define RCAR_USB3_TX_POL_VAL BIT(4)
static void xhci_rcar_start_gen2(struct usb_hcd *hcd)
{
/* LCLK Select */
writel(RCAR_USB3_LCLK_ENA_VAL, hcd->regs + RCAR_USB3_LCLK);
/* USB3.0 Configuration */
writel(RCAR_USB3_CONF1_VAL, hcd->regs + RCAR_USB3_CONF1);
writel(RCAR_USB3_CONF2_VAL, hcd->regs + RCAR_USB3_CONF2);
writel(RCAR_USB3_CONF3_VAL, hcd->regs + RCAR_USB3_CONF3);
/* USB3.0 Polarity */
writel(RCAR_USB3_RX_POL_VAL, hcd->regs + RCAR_USB3_RX_POL);
writel(RCAR_USB3_TX_POL_VAL, hcd->regs + RCAR_USB3_TX_POL);
}
void xhci_rcar_start(struct usb_hcd *hcd)
{
u32 temp;
@ -65,27 +78,23 @@ 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);
/* LCLK Select */
writel(RCAR_USB3_LCLK_ENA_VAL, hcd->regs + RCAR_USB3_LCLK);
/* USB3.0 Configuration */
writel(RCAR_USB3_CONF1_VAL, hcd->regs + RCAR_USB3_CONF1);
writel(RCAR_USB3_CONF2_VAL, hcd->regs + RCAR_USB3_CONF2);
writel(RCAR_USB3_CONF3_VAL, hcd->regs + RCAR_USB3_CONF3);
/* USB3.0 Polarity */
writel(RCAR_USB3_RX_POL_VAL, hcd->regs + RCAR_USB3_RX_POL);
writel(RCAR_USB3_TX_POL_VAL, hcd->regs + RCAR_USB3_TX_POL);
if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2))
xhci_rcar_start_gen2(hcd);
}
}
static int xhci_rcar_download_firmware(struct device *dev, void __iomem *regs)
static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
void __iomem *regs = hcd->regs;
struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
const struct firmware *fw;
int retval, index, j, time;
int timeout = 10000;
u32 data, val, temp;
/* request R-Car USB3.0 firmware */
retval = request_firmware(&fw, FIRMWARE_NAME, dev);
retval = request_firmware(&fw, priv->firmware_name, dev);
if (retval)
return retval;
@ -144,5 +153,5 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd)
if (!hcd->regs)
return 0;
return xhci_rcar_download_firmware(hcd->self.controller, hcd->regs);
return xhci_rcar_download_firmware(hcd);
}

2
drivers/usb/host/xhci-rcar.h
View File

@ -11,6 +11,8 @@
#ifndef _XHCI_RCAR_H
#define _XHCI_RCAR_H
#define XHCI_RCAR_FIRMWARE_NAME_V1 "r8a779x_usb3_v1.dlmem"
#if IS_ENABLED(CONFIG_USB_XHCI_RCAR)
void xhci_rcar_start(struct usb_hcd *hcd);
int xhci_rcar_init_quirk(struct usb_hcd *hcd);