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path: root/drivers/usb/host/xhci-rcar.c
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Diffstat (limited to 'drivers/usb/host/xhci-rcar.c')
-rw-r--r--drivers/usb/host/xhci-rcar.c44
1 files changed, 30 insertions, 14 deletions
diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index ff0d1b44ea58..623100e9385e 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -14,10 +14,17 @@
#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);
+/*
+* - 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 */
@@ -56,6 +63,19 @@ 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 +85,23 @@ 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 +160,5 @@ 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);
}