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/* $NetBSD: wzero3_usb.c,v 1.2 2011/07/19 15:37:39 dyoung Exp $ */
/*
* Copyright (c) 2009 NONAKA Kimihiro <nonaka@netbsd.org>
* All rights reserved.
*
* 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 THE AUTHOR ``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 THE AUTHOR OR CONTRIBUTORS 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: wzero3_usb.c,v 1.2 2011/07/19 15:37:39 dyoung Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0_gpio.h>
#include <machine/bootinfo.h>
#include <machine/config_hook.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <hpcarm/dev/wzero3_reg.h>
#if defined(WZERO3USB_DEBUG)
#define DPRINTF(s) printf s
#else
#define DPRINTF(s)
#endif
struct wzero3usb_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
int sc_client_pin;
int sc_host_pin;
int sc_host_power_pin;
void *sc_client_ih;
void *sc_host_ih;
};
static int wzero3usb_match(device_t, cfdata_t, void *);
static void wzero3usb_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(wzero3usb, sizeof(struct wzero3usb_softc),
wzero3usb_match, wzero3usb_attach, NULL, NULL);
static int wzero3usb_client_intr(void *);
static int wzero3usb_host_intr(void *);
static void wzero3usb_host_power(struct wzero3usb_softc *);
static const struct wzero3usb_model {
platid_mask_t *platid;
int client_pin;
int host_pin;
int host_power_pin;
} wzero3usb_table[] = {
/* WS003SH */
{
&platid_mask_MACH_SHARP_WZERO3_WS003SH,
GPIO_WS003SH_USB_CLIENT_DETECT,
-1, /* None */
-1, /* None */
},
/* WS004SH */
{
&platid_mask_MACH_SHARP_WZERO3_WS004SH,
GPIO_WS003SH_USB_CLIENT_DETECT,
-1, /* None */
-1, /* None */
},
/* WS007SH */
{
&platid_mask_MACH_SHARP_WZERO3_WS007SH,
GPIO_WS007SH_USB_CLIENT_DETECT,
GPIO_WS007SH_USB_HOST_DETECT,
GPIO_WS007SH_USB_HOST_POWER,
},
/* WS011SH */
{
&platid_mask_MACH_SHARP_WZERO3_WS011SH,
GPIO_WS011SH_USB_CLIENT_DETECT,
GPIO_WS011SH_USB_HOST_DETECT,
GPIO_WS011SH_USB_HOST_POWER,
},
/* XXX: WS020SH */
{ NULL, -1, -1, -1, }
};
static const struct wzero3usb_model *
wzero3usb_lookup(void)
{
const struct wzero3usb_model *model;
for (model = wzero3usb_table; model->platid != NULL; model++) {
if (platid_match(&platid, model->platid)) {
return model;
}
}
return NULL;
}
static int
wzero3usb_match(device_t parent, cfdata_t cf, void *aux)
{
if (strcmp(cf->cf_name, "wzero3usb") != 0)
return 0;
if (wzero3usb_lookup() == NULL)
return 0;
return 1;
}
static void
wzero3usb_attach(device_t parent, device_t self, void *aux)
{
struct wzero3usb_softc *sc = device_private(self);
struct pxaip_attach_args *pxa = aux;
const struct wzero3usb_model *model;
sc->sc_dev = self;
sc->sc_iot = pxa->pxa_iot;
aprint_normal(": USB Mode detection\n");
model = wzero3usb_lookup();
if (model == NULL) {
aprint_error_dev(self, "unknown model\n");
return;
}
sc->sc_client_pin = model->client_pin;
sc->sc_host_pin = model->host_pin;
sc->sc_host_power_pin = model->host_power_pin;
if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA270_USBDC_SIZE, 0,
&sc->sc_ioh)) {
aprint_error_dev(self, "couldn't map memory space\n");
return;
}
if (sc->sc_client_pin >= 0) {
sc->sc_client_ih = pxa2x0_gpio_intr_establish(sc->sc_client_pin,
IST_EDGE_BOTH, IPL_BIO, wzero3usb_client_intr, sc);
}
if (sc->sc_host_pin >= 0) {
sc->sc_host_ih = pxa2x0_gpio_intr_establish(sc->sc_host_pin,
IST_EDGE_BOTH, IPL_BIO, wzero3usb_host_intr, sc);
}
/* configure port 2 for input */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
USBDC_UP2OCR_HXS | USBDC_UP2OCR_HXOE |
USBDC_UP2OCR_DPPDE | USBDC_UP2OCR_DMPDE);
wzero3usb_host_power(sc);
}
static int
wzero3usb_host_intr(void *v)
{
struct wzero3usb_softc *sc = (struct wzero3usb_softc *)v;
DPRINTF(("%s: USB host cable changed: level = %s\n",
device_xname(sc->sc_dev),
pxa2x0_gpio_get_bit(sc->sc_host_pin) ? "H" : "L"));
wzero3usb_host_power(sc);
return 1;
}
static int
wzero3usb_client_intr(void *v)
{
struct wzero3usb_softc *sc = (struct wzero3usb_softc *)v;
DPRINTF(("%s: USB client cable changed: level = %s\n",
device_xname(sc->sc_dev),
pxa2x0_gpio_get_bit(sc->sc_client_pin) ? "H" : "L"));
(void)sc; /*XXX*/
return 1;
}
static void
wzero3usb_host_power(struct wzero3usb_softc *sc)
{
int host_cable;
if (sc->sc_host_pin >= 0 && sc->sc_host_power_pin >= 0) {
host_cable = pxa2x0_gpio_get_bit(sc->sc_host_pin);
if (!host_cable) {
DPRINTF(("%s: enable USB host power\n",
device_xname(sc->sc_dev)));
pxa2x0_gpio_set_bit(sc->sc_host_power_pin);
} else {
DPRINTF(("%s: disable USB host power\n",
device_xname(sc->sc_dev)));
pxa2x0_gpio_clear_bit(sc->sc_host_power_pin);
}
}
}
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