USB ehci freescale support

Add USB ehci freescale support

Signed-off-by: Michael Trimarchi <trimarchi@gandalf.sssup.it>
Signed-off-by: Remy Böhmer <linux@bohmer.net>

1 files changed, 99 insertions, 0 deletions

diff --git a/drivers/usb/usb_ehci_fsl.c b/drivers/usb/usb_ehci_fsl.c
new file mode 100644
index 0000000..9ca6c56
--- /dev/null
+++ b/drivers/usb/usb_ehci_fsl.c
@@ -0,0 +1,99 @@
+/*
+ * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
+ *
+ * Author: Tor Krill tor@excito.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <usb.h>
+#include <mpc83xx.h>
+#include <asm/io.h>
+#include <asm/bitops.h>
+
+#include "usb_ehci.h"
+#include "usb_ehci_fsl.h"
+#include "usb_ehci_core.h"
+
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ *
+ * Excerpts from linux ehci fsl driver.
+ */
+int ehci_hcd_init(void)
+{
+	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+	uint32_t addr, temp;
+
+	addr = (uint32_t)&(im->usb[0]);
+	hccr = (struct ehci_hccr *)(addr + FSL_SKIP_PCI);
+	hcor = (struct ehci_hcor *)((uint32_t) hccr + hccr->cr_caplength);
+
+	/* Configure clock */
+	clrsetbits_be32(&(im->clk.sccr), MPC83XX_SCCR_USB_MASK,
+			MPC83XX_SCCR_USB_DRCM_11);
+
+	/* Confgure interface. */
+	temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
+	out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp
+		 | REFSEL_16MHZ | UTMI_PHY_EN);
+
+	/* Wait for clock to stabilize */
+	do {
+		temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
+		udelay(1000);
+	} while (!(temp & PHY_CLK_VALID));
+
+	/* Set to Host mode */
+	temp = in_le32((void *)(addr + FSL_SOC_USB_USBMODE));
+	out_le32((void *)(addr + FSL_SOC_USB_USBMODE), temp | CM_HOST);
+
+	out_be32((void *)(addr + FSL_SOC_USB_SNOOP1), SNOOP_SIZE_2GB);
+	out_be32((void *)(addr + FSL_SOC_USB_SNOOP2),
+		 0x80000000 | SNOOP_SIZE_2GB);
+
+	/* Init phy */
+	/* TODO: handle different phys? */
+	out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI);
+
+	/* Enable interface. */
+	temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
+	out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp | USB_EN);
+
+	out_be32((void *)(addr + FSL_SOC_USB_PRICTRL), 0x0000000c);
+	out_be32((void *)(addr + FSL_SOC_USB_AGECNTTHRSH), 0x00000040);
+	out_be32((void *)(addr + FSL_SOC_USB_SICTRL), 0x00000001);
+
+	/* Enable interface. */
+	temp = in_be32((void *)(addr + FSL_SOC_USB_CTRL));
+	out_be32((void *)(addr + FSL_SOC_USB_CTRL), temp | USB_EN);
+
+	temp = in_le32((void *)(addr + FSL_SOC_USB_USBMODE));
+
+	return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(void)
+{
+	return 0;
+}