394 lines
9.6 KiB
C
394 lines
9.6 KiB
C
/*-
|
|
* Copyright (c) 2013-2014 Ruslan Bukin <br@bsdpad.com>
|
|
* All rights reserved.
|
|
*
|
|
* 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 THE AUTHOR AND CONTRIBUTORS ``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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_bus.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/gpio.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <dev/usb/usb.h>
|
|
#include <dev/usb/usbdi.h>
|
|
#include <dev/usb/usb_busdma.h>
|
|
#include <dev/usb/usb_process.h>
|
|
#include <dev/usb/usb_controller.h>
|
|
#include <dev/usb/usb_bus.h>
|
|
#include <dev/usb/controller/ehci.h>
|
|
#include <dev/usb/controller/ehcireg.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include <arm/samsung/exynos/exynos5_common.h>
|
|
#include <arm/samsung/exynos/exynos5_pmu.h>
|
|
|
|
#include "gpio_if.h"
|
|
|
|
#include "opt_platform.h"
|
|
|
|
/* GPIO control */
|
|
#define GPIO_OUTPUT 1
|
|
#define GPIO_INPUT 0
|
|
#define PIN_USB 161
|
|
|
|
/* SYSREG */
|
|
#define EXYNOS5_SYSREG_USB2_PHY 0x0
|
|
#define USB2_MODE_HOST 0x1
|
|
|
|
/* USB HOST */
|
|
#define HOST_CTRL_CLK_24MHZ (5 << 16)
|
|
#define HOST_CTRL_CLK_MASK (7 << 16)
|
|
#define HOST_CTRL_SIDDQ (1 << 6)
|
|
#define HOST_CTRL_SLEEP (1 << 5)
|
|
#define HOST_CTRL_SUSPEND (1 << 4)
|
|
#define HOST_CTRL_RESET_LINK (1 << 1)
|
|
#define HOST_CTRL_RESET_PHY (1 << 0)
|
|
#define HOST_CTRL_RESET_PHY_ALL (1U << 31)
|
|
|
|
/* Forward declarations */
|
|
static int exynos_ehci_attach(device_t dev);
|
|
static int exynos_ehci_detach(device_t dev);
|
|
static int exynos_ehci_probe(device_t dev);
|
|
|
|
struct exynos_ehci_softc {
|
|
device_t dev;
|
|
ehci_softc_t base;
|
|
struct resource *res[4];
|
|
bus_space_tag_t host_bst;
|
|
bus_space_tag_t sysreg_bst;
|
|
bus_space_handle_t host_bsh;
|
|
bus_space_handle_t sysreg_bsh;
|
|
|
|
};
|
|
|
|
static struct resource_spec exynos_ehci_spec[] = {
|
|
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
|
|
{ SYS_RES_MEMORY, 1, RF_ACTIVE },
|
|
{ SYS_RES_MEMORY, 2, RF_ACTIVE },
|
|
{ SYS_RES_IRQ, 0, RF_ACTIVE },
|
|
{ -1, 0 }
|
|
};
|
|
|
|
static device_method_t ehci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, exynos_ehci_probe),
|
|
DEVMETHOD(device_attach, exynos_ehci_attach),
|
|
DEVMETHOD(device_detach, exynos_ehci_detach),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
/* kobj_class definition */
|
|
static driver_t ehci_driver = {
|
|
"ehci",
|
|
ehci_methods,
|
|
sizeof(ehci_softc_t)
|
|
};
|
|
|
|
static devclass_t ehci_devclass;
|
|
|
|
DRIVER_MODULE(ehci, simplebus, ehci_driver, ehci_devclass, 0, 0);
|
|
MODULE_DEPEND(ehci, usb, 1, 1, 1);
|
|
|
|
/*
|
|
* Public methods
|
|
*/
|
|
static int
|
|
exynos_ehci_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (ofw_bus_is_compatible(dev, "exynos,usb-ehci") == 0)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Exynos integrated USB controller");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
gpio_ctrl(struct exynos_ehci_softc *esc, int dir, int power)
|
|
{
|
|
device_t gpio_dev;
|
|
|
|
/* Get the GPIO device, we need this to give power to USB */
|
|
gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
|
|
if (gpio_dev == NULL) {
|
|
device_printf(esc->dev, "cant find gpio_dev\n");
|
|
return (1);
|
|
}
|
|
|
|
if (power)
|
|
GPIO_PIN_SET(gpio_dev, PIN_USB, GPIO_PIN_HIGH);
|
|
else
|
|
GPIO_PIN_SET(gpio_dev, PIN_USB, GPIO_PIN_LOW);
|
|
|
|
if (dir)
|
|
GPIO_PIN_SETFLAGS(gpio_dev, PIN_USB, GPIO_PIN_OUTPUT);
|
|
else
|
|
GPIO_PIN_SETFLAGS(gpio_dev, PIN_USB, GPIO_PIN_INPUT);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
reset_hsic_hub(struct exynos_ehci_softc *esc, phandle_t hub)
|
|
{
|
|
device_t gpio_dev;
|
|
pcell_t pin;
|
|
|
|
/* TODO: check that hub is compatible with "smsc,usb3503" */
|
|
if (!OF_hasprop(hub, "freebsd,reset-gpio")) {
|
|
return (1);
|
|
}
|
|
|
|
if (OF_getencprop(hub, "freebsd,reset-gpio", &pin, sizeof(pin)) < 0) {
|
|
device_printf(esc->dev,
|
|
"failed to decode reset GPIO pin number for HSIC hub\n");
|
|
return (1);
|
|
}
|
|
|
|
/* Get the GPIO device, we need this to give power to USB */
|
|
gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
|
|
if (gpio_dev == NULL) {
|
|
device_printf(esc->dev, "Cant find gpio device\n");
|
|
return (1);
|
|
}
|
|
|
|
GPIO_PIN_SET(gpio_dev, pin, GPIO_PIN_LOW);
|
|
DELAY(100);
|
|
GPIO_PIN_SET(gpio_dev, pin, GPIO_PIN_HIGH);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
phy_init(struct exynos_ehci_softc *esc)
|
|
{
|
|
int reg;
|
|
phandle_t hub;
|
|
|
|
gpio_ctrl(esc, GPIO_INPUT, 1);
|
|
|
|
/* set USB HOST mode */
|
|
bus_space_write_4(esc->sysreg_bst, esc->sysreg_bsh,
|
|
EXYNOS5_SYSREG_USB2_PHY, USB2_MODE_HOST);
|
|
|
|
/* Power ON phy */
|
|
usb2_phy_power_on();
|
|
|
|
reg = bus_space_read_4(esc->host_bst, esc->host_bsh, 0x0);
|
|
reg &= ~(HOST_CTRL_CLK_MASK |
|
|
HOST_CTRL_RESET_PHY |
|
|
HOST_CTRL_RESET_PHY_ALL |
|
|
HOST_CTRL_SIDDQ |
|
|
HOST_CTRL_SUSPEND |
|
|
HOST_CTRL_SLEEP);
|
|
|
|
reg |= (HOST_CTRL_CLK_24MHZ |
|
|
HOST_CTRL_RESET_LINK);
|
|
bus_space_write_4(esc->host_bst, esc->host_bsh, 0x0, reg);
|
|
|
|
DELAY(10);
|
|
|
|
reg = bus_space_read_4(esc->host_bst, esc->host_bsh, 0x0);
|
|
reg &= ~(HOST_CTRL_RESET_LINK);
|
|
bus_space_write_4(esc->host_bst, esc->host_bsh, 0x0, reg);
|
|
|
|
if ((hub = OF_finddevice("/hsichub")) != 0) {
|
|
reset_hsic_hub(esc, hub);
|
|
}
|
|
|
|
gpio_ctrl(esc, GPIO_OUTPUT, 1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
exynos_ehci_attach(device_t dev)
|
|
{
|
|
struct exynos_ehci_softc *esc;
|
|
ehci_softc_t *sc;
|
|
bus_space_handle_t bsh;
|
|
int err;
|
|
|
|
esc = device_get_softc(dev);
|
|
esc->dev = dev;
|
|
sc = &esc->base;
|
|
sc->sc_bus.parent = dev;
|
|
sc->sc_bus.devices = sc->sc_devices;
|
|
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
|
|
|
|
if (bus_alloc_resources(dev, exynos_ehci_spec, esc->res)) {
|
|
device_printf(dev, "could not allocate resources\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* EHCI registers */
|
|
sc->sc_io_tag = rman_get_bustag(esc->res[0]);
|
|
bsh = rman_get_bushandle(esc->res[0]);
|
|
sc->sc_io_size = rman_get_size(esc->res[0]);
|
|
|
|
/* EHCI HOST ctrl registers */
|
|
esc->host_bst = rman_get_bustag(esc->res[1]);
|
|
esc->host_bsh = rman_get_bushandle(esc->res[1]);
|
|
|
|
/* SYSREG */
|
|
esc->sysreg_bst = rman_get_bustag(esc->res[2]);
|
|
esc->sysreg_bsh = rman_get_bushandle(esc->res[2]);
|
|
|
|
/* get all DMA memory */
|
|
if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
|
|
&ehci_iterate_hw_softc))
|
|
return (ENXIO);
|
|
|
|
/*
|
|
* Set handle to USB related registers subregion used by
|
|
* generic EHCI driver.
|
|
*/
|
|
err = bus_space_subregion(sc->sc_io_tag, bsh, 0x0,
|
|
sc->sc_io_size, &sc->sc_io_hdl);
|
|
if (err != 0)
|
|
return (ENXIO);
|
|
|
|
phy_init(esc);
|
|
|
|
/* Setup interrupt handler */
|
|
err = bus_setup_intr(dev, esc->res[3], INTR_TYPE_BIO | INTR_MPSAFE,
|
|
NULL, (driver_intr_t *)ehci_interrupt, sc,
|
|
&sc->sc_intr_hdl);
|
|
if (err) {
|
|
device_printf(dev, "Could not setup irq, "
|
|
"%d\n", err);
|
|
return (1);
|
|
}
|
|
|
|
/* Add USB device */
|
|
sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
|
|
if (!sc->sc_bus.bdev) {
|
|
device_printf(dev, "Could not add USB device\n");
|
|
err = bus_teardown_intr(dev, esc->res[3],
|
|
sc->sc_intr_hdl);
|
|
if (err)
|
|
device_printf(dev, "Could not tear down irq,"
|
|
" %d\n", err);
|
|
return (1);
|
|
}
|
|
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
|
|
|
|
strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor));
|
|
|
|
err = ehci_init(sc);
|
|
if (!err) {
|
|
sc->sc_flags |= EHCI_SCFLG_DONEINIT;
|
|
err = device_probe_and_attach(sc->sc_bus.bdev);
|
|
} else {
|
|
device_printf(dev, "USB init failed err=%d\n", err);
|
|
|
|
device_delete_child(dev, sc->sc_bus.bdev);
|
|
sc->sc_bus.bdev = NULL;
|
|
|
|
err = bus_teardown_intr(dev, esc->res[3],
|
|
sc->sc_intr_hdl);
|
|
if (err)
|
|
device_printf(dev, "Could not tear down irq,"
|
|
" %d\n", err);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
exynos_ehci_detach(device_t dev)
|
|
{
|
|
struct exynos_ehci_softc *esc;
|
|
ehci_softc_t *sc;
|
|
int err;
|
|
|
|
esc = device_get_softc(dev);
|
|
sc = &esc->base;
|
|
|
|
if (sc->sc_flags & EHCI_SCFLG_DONEINIT)
|
|
return (0);
|
|
|
|
/*
|
|
* only call ehci_detach() after ehci_init()
|
|
*/
|
|
if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
|
|
ehci_detach(sc);
|
|
sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
|
|
}
|
|
|
|
/*
|
|
* Disable interrupts that might have been switched on in
|
|
* ehci_init.
|
|
*/
|
|
if (sc->sc_io_tag && sc->sc_io_hdl)
|
|
bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
|
|
EHCI_USBINTR, 0);
|
|
|
|
if (esc->res[3] && sc->sc_intr_hdl) {
|
|
err = bus_teardown_intr(dev, esc->res[3],
|
|
sc->sc_intr_hdl);
|
|
if (err) {
|
|
device_printf(dev, "Could not tear down irq,"
|
|
" %d\n", err);
|
|
return (err);
|
|
}
|
|
sc->sc_intr_hdl = NULL;
|
|
}
|
|
|
|
if (sc->sc_bus.bdev) {
|
|
device_delete_child(dev, sc->sc_bus.bdev);
|
|
sc->sc_bus.bdev = NULL;
|
|
}
|
|
|
|
/* During module unload there are lots of children leftover */
|
|
device_delete_children(dev);
|
|
|
|
bus_release_resources(dev, exynos_ehci_spec, esc->res);
|
|
|
|
return (0);
|
|
}
|