X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fdrivers%2Fusb%2Fmusb%2Fdavinci.c;fp=qemu%2Froms%2Fu-boot%2Fdrivers%2Fusb%2Fmusb%2Fdavinci.c;h=a9707a898b570c953bc66ed1688d959aa9a06d84;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/drivers/usb/musb/davinci.c b/qemu/roms/u-boot/drivers/usb/musb/davinci.c
new file mode 100644
index 000000000..a9707a898
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/usb/musb/davinci.c
@@ -0,0 +1,124 @@
+/*
+ * TI's Davinci platform specific USB wrapper functions.
+ *
+ * Copyright (c) 2008 Texas Instruments
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Author: Thomas Abraham t-abraham@ti.com, Texas Instruments
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include "davinci.h"
+#include <asm/arch/hardware.h>
+
+#if !defined(CONFIG_DV_USBPHY_CTL)
+#define CONFIG_DV_USBPHY_CTL (USBPHY_SESNDEN | USBPHY_VBDTCTEN)
+#endif
+
+/* MUSB platform configuration */
+struct musb_config musb_cfg = {
+	.regs		= (struct musb_regs *)MENTOR_USB0_BASE,
+	.timeout	= DAVINCI_USB_TIMEOUT,
+	.musb_speed	= 0,
+};
+
+/* MUSB module register overlay */
+struct davinci_usb_regs *dregs;
+
+/*
+ * Enable the USB phy
+ */
+static u8 phy_on(void)
+{
+	u32 timeout;
+#ifdef DAVINCI_DM365EVM
+	u32 val;
+#endif
+	/* Wait until the USB phy is turned on */
+#ifdef DAVINCI_DM365EVM
+	writel(USBPHY_PHY24MHZ | USBPHY_SESNDEN |
+			USBPHY_VBDTCTEN, USBPHY_CTL_PADDR);
+#else
+	writel(CONFIG_DV_USBPHY_CTL, USBPHY_CTL_PADDR);
+#endif
+	timeout = musb_cfg.timeout;
+
+#ifdef DAVINCI_DM365EVM
+	/* Set the ownership of GIO33 to USB */
+	val = readl(PINMUX4);
+	val &= ~(PINMUX4_USBDRVBUS_BITCLEAR);
+	val |= PINMUX4_USBDRVBUS_BITSET;
+	writel(val, PINMUX4);
+#endif
+	while (timeout--)
+		if (readl(USBPHY_CTL_PADDR) & USBPHY_PHYCLKGD)
+			return 1;
+
+	/* USB phy was not turned on */
+	return 0;
+}
+
+/*
+ * Disable the USB phy
+ */
+static void phy_off(void)
+{
+	/* powerdown the on-chip PHY and its oscillator */
+	writel(USBPHY_OSCPDWN | USBPHY_PHYPDWN, USBPHY_CTL_PADDR);
+}
+
+void __enable_vbus(void)
+{
+	/*
+	 *  nothing to do, vbus is handled through the cpu.
+	 *  Define this function in board code, if it is
+	 *  different on your board.
+	 */
+}
+void  enable_vbus(void)
+	__attribute__((weak, alias("__enable_vbus")));
+
+/*
+ * This function performs Davinci platform specific initialization for usb0.
+ */
+int musb_platform_init(void)
+{
+	u32  revision;
+
+	/* enable USB VBUS */
+	enable_vbus();
+
+	/* start the on-chip USB phy and its pll */
+	if (!phy_on())
+		return -1;
+
+	/* reset the controller */
+	dregs = (struct davinci_usb_regs *)DAVINCI_USB0_BASE;
+	writel(1, &dregs->ctrlr);
+	udelay(5000);
+
+	/* Returns zero if e.g. not clocked */
+	revision = readl(&dregs->version);
+	if (!revision)
+		return -1;
+
+	/* Disable all interrupts */
+	writel(DAVINCI_USB_USBINT_MASK | DAVINCI_USB_RXINT_MASK |
+			DAVINCI_USB_TXINT_MASK , &dregs->intmsksetr);
+	return 0;
+}
+
+/*
+ * This function performs Davinci platform specific deinitialization for usb0.
+ */
+void musb_platform_deinit(void)
+{
+	/* Turn of the phy */
+	phy_off();
+
+	/* flush any interrupts */
+	writel(DAVINCI_USB_USBINT_MASK | DAVINCI_USB_TXINT_MASK |
+			DAVINCI_USB_RXINT_MASK , &dregs->intclrr);
+}