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authorStephen Warren <swarren@nvidia.com>2014-04-24 17:52:39 -0600
committerMarek Vasut <marex@denx.de>2014-04-30 10:30:57 +0200
commitfcf2ede190e054edcb804ba7786dd024b388a160 (patch)
tree06ad9e6722dc62a3f52830f53ef9a2f8e4d74d24
parent0c51dc6db9ea0e3912d1d3e2d953bc22de433c60 (diff)
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usb: ci_udc: support variants with hostpc register
Tegra's USB controller appears to be a variant of the ChipIdea controller; perhaps derived from it, or simply a different version of the IP core to what U-Boot supports today. In this variant, at least the following difference are present: - Some registers are moved about. - Setup transaction completion is reported in a separate 'epsetupstat' register, rather than in 'epstat' (which still exists, perhaps for other transaction types). - USB connection speed is reported in a separate 'hostpc1_devlc' register, rather than 'portsc'. - The registers used by ci_udc.c begin at offset 0x130 from the USB register base, rather than offset 0x140. However, this is handled by the associated EHCI controller driver, since the register address is stored in controller.ctrl->hcor. Introduce define CONFIG_CI_UDC_HAS_HOSTPC to indicate which variant of the controller should be supported. The "HAS_HOSTPC" part of this name mirrors the similar "has_hostpc" field used by the Linux EHCI controller core to represent the presence/absence of the hostpc1_devlc register. Signed-off-by: Stephen Warren <swarren@nvidia.com>
-rw-r--r--drivers/usb/gadget/ci_udc.c15
-rw-r--r--drivers/usb/gadget/ci_udc.h65
2 files changed, 62 insertions, 18 deletions
diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index fd751a2..02d3fda 100644
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -416,7 +416,11 @@ static void handle_setup(void)
ci_invalidate_qh(0);
memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
+#ifdef CONFIG_CI_UDC_HAS_HOSTPC
+ writel(EPT_RX(0), &udc->epsetupstat);
+#else
writel(EPT_RX(0), &udc->epstat);
+#endif
DBG("handle setup %s, %x, %x index %x value %x\n", reqname(r.bRequest),
r.bRequestType, r.bRequest, r.wIndex, r.wValue);
@@ -483,6 +487,9 @@ static void stop_activity(void)
struct ept_queue_head *head;
struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
writel(readl(&udc->epcomp), &udc->epcomp);
+#ifdef CONFIG_CI_UDC_HAS_HOSTPC
+ writel(readl(&udc->epsetupstat), &udc->epsetupstat);
+#endif
writel(readl(&udc->epstat), &udc->epstat);
writel(0xffffffff, &udc->epflush);
@@ -524,7 +531,11 @@ void udc_irq(void)
int max = 64;
int speed = USB_SPEED_FULL;
+#ifdef CONFIG_CI_UDC_HAS_HOSTPC
+ bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
+#else
bit = (readl(&udc->portsc) >> 26) & 3;
+#endif
DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
if (bit == 2) {
speed = USB_SPEED_HIGH;
@@ -541,7 +552,11 @@ void udc_irq(void)
printf("<UEI %x>\n", readl(&udc->epcomp));
if ((n & STS_UI) || (n & STS_UEI)) {
+#ifdef CONFIG_CI_UDC_HAS_HOSTPC
+ n = readl(&udc->epsetupstat);
+#else
n = readl(&udc->epstat);
+#endif
if (n & EPT_RX(0))
handle_setup();
diff --git a/drivers/usb/gadget/ci_udc.h b/drivers/usb/gadget/ci_udc.h
index 42f6ef4..4425fd9 100644
--- a/drivers/usb/gadget/ci_udc.h
+++ b/drivers/usb/gadget/ci_udc.h
@@ -8,45 +8,74 @@
#define NUM_ENDPOINTS 6
+#ifdef CONFIG_CI_UDC_HAS_HOSTPC
+struct ci_udc {
+ u32 usbcmd; /* 0x130 */
+ u32 usbsts; /* 0x134 */
+ u32 pad1[3];
+ u32 devaddr; /* 0x144 */
+ u32 epinitaddr; /* 0x148 */
+ u32 pad2[10];
+ u32 portsc; /* 0x174 */
+ u32 pad178[(0x1b4 - (0x174 + 4)) / 4];
+ u32 hostpc1_devlc; /* 0x1b4 */
+ u32 pad1b8[(0x1f8 - (0x1b4 + 4)) / 4];
+ u32 usbmode; /* 0x1f8 */
+ u32 pad1fc[(0x208 - (0x1f8 + 4)) / 4];
+ u32 epsetupstat; /* 0x208 */
+ u32 epprime; /* 0x20c */
+ u32 epflush; /* 0x210 */
+ u32 epstat; /* 0x214 */
+ u32 epcomp; /* 0x218 */
+ u32 epctrl[16]; /* 0x21c */
+};
+#else
struct ci_udc {
-#define MICRO_8FRAME 0x8
-#define USBCMD_ITC(x) ((((x) > 0xff) ? 0xff : x) << 16)
-#define USBCMD_FS2 (1 << 15)
-#define USBCMD_RST (1 << 1)
-#define USBCMD_RUN (1)
u32 usbcmd; /* 0x140 */
-#define STS_SLI (1 << 8)
-#define STS_URI (1 << 6)
-#define STS_PCI (1 << 2)
-#define STS_UEI (1 << 1)
-#define STS_UI (1 << 0)
u32 usbsts; /* 0x144 */
u32 pad1[3];
u32 devaddr; /* 0x154 */
u32 epinitaddr; /* 0x158 */
u32 pad2[10];
-#define PTS_ENABLE 2
-#define PTS(x) (((x) & 0x3) << 30)
-#define PFSC (1 << 24)
u32 portsc; /* 0x184 */
u32 pad3[8];
-#define USBMODE_DEVICE 2
u32 usbmode; /* 0x1a8 */
u32 epstat; /* 0x1ac */
-#define EPT_TX(x) (1 << (((x) & 0xffff) + 16))
-#define EPT_RX(x) (1 << ((x) & 0xffff))
u32 epprime; /* 0x1b0 */
u32 epflush; /* 0x1b4 */
u32 pad4;
u32 epcomp; /* 0x1bc */
+ u32 epctrl[16]; /* 0x1c0 */
+};
+
+#define PTS_ENABLE 2
+#define PTS(x) (((x) & 0x3) << 30)
+#define PFSC (1 << 24)
+#endif
+
+#define MICRO_8FRAME 0x8
+#define USBCMD_ITC(x) ((((x) > 0xff) ? 0xff : x) << 16)
+#define USBCMD_FS2 (1 << 15)
+#define USBCMD_RST (1 << 1)
+#define USBCMD_RUN (1)
+
+#define STS_SLI (1 << 8)
+#define STS_URI (1 << 6)
+#define STS_PCI (1 << 2)
+#define STS_UEI (1 << 1)
+#define STS_UI (1 << 0)
+
+#define USBMODE_DEVICE 2
+
+#define EPT_TX(x) (1 << (((x) & 0xffff) + 16))
+#define EPT_RX(x) (1 << ((x) & 0xffff))
+
#define CTRL_TXE (1 << 23)
#define CTRL_TXR (1 << 22)
#define CTRL_RXE (1 << 7)
#define CTRL_RXR (1 << 6)
#define CTRL_TXT_BULK (2 << 18)
#define CTRL_RXT_BULK (2 << 2)
- u32 epctrl[16]; /* 0x1c0 */
-};
struct ci_ep {
struct usb_ep ep;