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authorMichael Trimarchi <trimarchi@gandalf.sssup.it>2008-11-28 13:22:09 +0100
committerRemy Bohmer <linux@bohmer.net>2009-01-28 19:57:27 +0100
commit6b92487dcf9afe83a3570153d66940fdb293be76 (patch)
tree43c5b111227b3a42e371c581aa4edd18b02db080 /drivers/usb/usb_ehci_fsl.c
parentaaf098cfeed04595d4c5100ffd39095d79edbf90 (diff)
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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>
Diffstat (limited to 'drivers/usb/usb_ehci_fsl.c')
-rw-r--r--drivers/usb/usb_ehci_fsl.c99
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;
+}