Module Name: src
Committed By: bsh
Date: Thu Dec 9 04:40:22 UTC 2010
Added Files:
src/sys/arch/evbarm/netwalker: netwalker_usb.c
Log Message:
support USB on NetWalker
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/evbarm/netwalker/netwalker_usb.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/evbarm/netwalker/netwalker_usb.c
diff -u /dev/null src/sys/arch/evbarm/netwalker/netwalker_usb.c:1.1
--- /dev/null Thu Dec 9 04:40:22 2010
+++ src/sys/arch/evbarm/netwalker/netwalker_usb.c Thu Dec 9 04:40:22 2010
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 2010 Genetec Corporation. All rights reserved.
+ * Written by Hiroyuki Bessho for Genetec Corporation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: netwalker_usb.c,v 1.1 2010/12/09 04:40:22 bsh Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/bus.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdivar.h>
+#include <dev/usb/usb_mem.h>
+
+#include <dev/usb/ehcireg.h>
+#include <dev/usb/ehcivar.h>
+
+#include <arm/imx/imx51reg.h>
+#include <arm/imx/imx51var.h>
+#include <arm/imx/imxusbreg.h>
+#include <arm/imx/imxusbvar.h>
+#include <arm/imx/imx51_iomuxreg.h>
+#include <arm/imx/imxgpiovar.h>
+#include "locators.h"
+
+
+struct netwalker_usbc_softc {
+ struct imxusbc_softc sc_imxusbc;
+};
+
+
+static int imxusbc_match(device_t, cfdata_t, void *);
+static void imxusbc_attach(device_t, device_t, void *);
+static void netwalker_usb_init(struct imxehci_softc *);
+
+static void init_otg(struct imxehci_softc *);
+static void init_h1(struct imxehci_softc *);
+
+extern const struct iomux_conf iomux_usb1_config[];
+
+/* attach structures */
+CFATTACH_DECL_NEW(imxusbc_axi, sizeof(struct netwalker_usbc_softc),
+ imxusbc_match, imxusbc_attach, NULL, NULL);
+
+static int
+imxusbc_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct axi_attach_args *aa = aux;
+
+ printf("%s\n", __func__);
+
+ if (aa->aa_addr == USBOH3_BASE)
+ return 1;
+ return 0;
+}
+
+static void
+imxusbc_attach(device_t parent, device_t self, void *aux)
+{
+ struct axi_attach_args *aa = aux;
+ struct imxusbc_softc *sc = device_private(self);
+
+ sc->sc_init_md_hook = netwalker_usb_init;
+ sc->sc_setup_md_hook = NULL;
+
+ imxusbc_attach_common(parent, self, aa->aa_iot);
+
+}
+
+static void
+netwalker_usb_init(struct imxehci_softc *sc)
+{
+ switch (sc->sc_unit) {
+ case 0: /* OTG controller */
+ init_otg(sc);
+ break;
+ case 1: /* EHCI Host 1 */
+ init_h1(sc);
+ break;
+ default:
+ aprint_error_dev(sc->sc_hsc.sc_dev, "unit %d not supprted\n",
+ sc->sc_unit);
+ }
+}
+
+static void
+init_otg(struct imxehci_softc *sc)
+{
+ struct imxusbc_softc *usbc = sc->sc_usbc;
+ uint32_t reg;
+
+ sc->sc_iftype = IMXUSBC_IF_UTMI;
+
+ imxehci_reset(sc);
+
+ reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL0);
+ reg |= PHYCTRL0_OTG_OVER_CUR_DIS;
+ bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL0, reg);
+
+ reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_USBCTRL);
+ reg &= ~(USBCTRL_OWIR|USBCTRL_OPM);
+ bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_USBCTRL, reg);
+
+ reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL1);
+ reg = (reg & ~PHYCTRL1_PLLDIVVALUE_MASK) | PHYCTRL1_PLLDIVVALUE_24MHZ;
+ bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL1, reg);
+}
+
+
+
+
+static void
+init_h1(struct imxehci_softc *sc)
+{
+ struct imxusbc_softc *usbc = sc->sc_usbc;
+ uint32_t reg;
+
+ /* output HIGH to USBH1_STP */
+ gpio_data_write(GPIO_NO(1,27), 1);
+ gpio_set_direction(GPIO_NO(1, 27), GPIO_DIR_OUT);
+
+ iomux_mux_config(iomux_usb1_config);
+
+ delay(100 * 1000);
+
+ /* XXX enable USB clock */
+
+ imxehci_reset(sc);
+
+ /* select external clock for Host 1 */
+ reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh,
+ USBOH3_USBCTRL1);
+ reg |= USBCTRL1_UH1_EXT_CLK_EN;
+ bus_space_write_4(usbc->sc_iot, usbc->sc_ioh,
+ USBOH3_USBCTRL1, reg);
+
+
+ /* select ULPI interface for Host 1 */
+ sc->sc_iftype = IMXUSBC_IF_ULPI;
+
+ reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh,
+ USBOH3_USBCTRL);
+ reg &= ~(USBCTRL_H1PM);
+ reg |= USBCTRL_H1UIE|USBCTRL_H1WIE;
+ bus_space_write_4(usbc->sc_iot, usbc->sc_ioh,
+ USBOH3_USBCTRL, reg);
+
+ iomux_set_function(MUX_PIN_USBH1_STP, IOMUX_CONFIG_ALT0);
+
+
+ /* HUB RESET release */
+ gpio_data_write(GPIO_NO(1, 7), 1);
+ gpio_set_direction(GPIO_NO(1, 7), GPIO_DIR_OUT);
+
+
+ /* Drive 26M_OSC_EN line high 3_1 */
+ gpio_data_write(GPIO_NO(3, 1), 1);
+ gpio_set_direction(GPIO_NO(3, 1), GPIO_DIR_OUT);
+
+ /* Drive USB_CLK_EN_B line low 2_1 */
+ gpio_data_write(GPIO_NO(2, 1), 0);
+ gpio_set_direction(GPIO_NO(2, 1), GPIO_DIR_IN);
+
+ /* MX51_PIN_EIM_D21 - De-assert USB PHY RESETB */
+ delay(10 * 1000);
+ gpio_data_write(GPIO_NO(2, 5), 1);
+ gpio_set_direction(GPIO_NO(2, 5), GPIO_DIR_OUT);
+ iomux_set_function(MUX_PIN_EIM_D21, IOMUX_CONFIG_ALT1);
+ delay(5 * 1000);
+}
+
+/*
+ * IOMUX setting for USB Host1
+ * taken from Linux driver
+ */
+const struct iomux_conf iomux_usb1_config[] = {
+
+ {
+ /* Initially setup this pin for GPIO, and change to
+ * USBH1_STP later */
+ .pin = MUX_PIN_USBH1_STP,
+ .mux = IOMUX_CONFIG_ALT2,
+ .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH |
+ PAD_CTL_KEEPER | PAD_CTL_HYS)
+ },
+
+ {
+ /* Clock */
+ .pin = MUX_PIN_USBH1_CLK,
+ .mux = IOMUX_CONFIG_ALT0,
+ .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH |
+ PAD_CTL_KEEPER | PAD_CTL_HYS)
+ },
+ {
+ /* DIR */
+ .pin = MUX_PIN_USBH1_DIR,
+ .mux = IOMUX_CONFIG_ALT0,
+ .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH |
+ PAD_CTL_KEEPER | PAD_CTL_HYS)
+ },
+
+ {
+ /* NXT */
+ .pin = MUX_PIN_USBH1_NXT,
+ .mux = IOMUX_CONFIG_ALT0,
+ .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH |
+ PAD_CTL_KEEPER | PAD_CTL_HYS)
+ },
+
+#define USBH1_DATA_CONFIG(n) \
+ { \
+ /* DATA n */ \
+ .pin = __CONCAT(MUX_PIN_USBH1_DATA,n), \
+ .mux = IOMUX_CONFIG_ALT0, \
+ .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | \
+ PAD_CTL_KEEPER | PAD_CTL_PUS_100K_PU | \
+ PAD_CTL_HYS), \
+ /* XXX: what does 100K_PU with KEEPER ? */ \
+ }
+
+ USBH1_DATA_CONFIG(0),
+ USBH1_DATA_CONFIG(1),
+ USBH1_DATA_CONFIG(2),
+ USBH1_DATA_CONFIG(3),
+ USBH1_DATA_CONFIG(4),
+ USBH1_DATA_CONFIG(5),
+ USBH1_DATA_CONFIG(6),
+ USBH1_DATA_CONFIG(7),
+
+ {
+ /* USB_CLK_EN_B GPIO2[1]*/
+ .pin = MUX_PIN_EIM_D17,
+ .mux = IOMUX_CONFIG_ALT1,
+ .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_PKE | PAD_CTL_SRE),
+ },
+
+ {
+ /* USB PHY RESETB */
+ .pin = MUX_PIN_EIM_D21,
+ .mux = IOMUX_CONFIG_ALT1,
+ .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_KEEPER |
+ PAD_CTL_PUS_100K_PU | PAD_CTL_SRE)
+ },
+ {
+ /* USB HUB RESET */
+ .pin = MUX_PIN_GPIO1_7,
+ .mux = IOMUX_CONFIG_ALT0,
+ .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_SRE),
+ },
+
+ /* end of table */
+ {.pin = IOMUX_CONF_EOT}
+};
