2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
37 #include <sys/condvar.h>
40 #include <dev/ofw/ofw_bus.h>
41 #include <dev/ofw/ofw_bus_subr.h>
43 #include <dev/usb/usb.h>
44 #include <dev/usb/usbdi.h>
45 #include <dev/usb/usb_busdma.h>
46 #include <dev/usb/usb_process.h>
47 #include <dev/usb/usb_controller.h>
48 #include <dev/usb/usb_bus.h>
49 #include <dev/usb/controller/ehci.h>
50 #include <dev/usb/controller/ehcireg.h>
52 #include <dev/fdt/fdt_common.h>
54 #include <machine/bus.h>
55 #include <machine/resource.h>
57 #include "opt_platform.h"
60 #define GPIO_CON(x, v) ((v) << ((x) * 4))
64 #define GPX3CON 0x0C60
65 #define GPX3DAT 0x0C64
69 #define EXYNOS5_PWR_USBHOST_PHY 0x708
70 #define PHY_POWER_ON 1
71 #define PHY_POWER_OFF 0
74 #define EXYNOS5_SYSREG_USB2_PHY 0x230
75 #define USB2_MODE_HOST 0x1
78 #define HOST_CTRL_CLK_24MHZ (5 << 16)
79 #define HOST_CTRL_CLK_MASK (7 << 16)
80 #define HOST_CTRL_SIDDQ (1 << 6)
81 #define HOST_CTRL_SLEEP (1 << 5)
82 #define HOST_CTRL_SUSPEND (1 << 4)
83 #define HOST_CTRL_RESET_LINK (1 << 1)
84 #define HOST_CTRL_RESET_PHY (1 << 0)
85 #define HOST_CTRL_RESET_PHY_ALL (1U << 31)
87 /* Forward declarations */
88 static int exynos_ehci_attach(device_t dev);
89 static int exynos_ehci_detach(device_t dev);
90 static int exynos_ehci_probe(device_t dev);
92 struct exynos_ehci_softc {
94 struct resource *res[6];
95 bus_space_tag_t host_bst;
96 bus_space_tag_t pwr_bst;
97 bus_space_tag_t sysreg_bst;
98 bus_space_tag_t gpio_bst;
99 bus_space_handle_t host_bsh;
100 bus_space_handle_t pwr_bsh;
101 bus_space_handle_t sysreg_bsh;
102 bus_space_handle_t gpio_bsh;
106 static struct resource_spec exynos_ehci_spec[] = {
107 { SYS_RES_MEMORY, 0, RF_ACTIVE },
108 { SYS_RES_MEMORY, 1, RF_ACTIVE },
109 { SYS_RES_MEMORY, 2, RF_ACTIVE },
110 { SYS_RES_MEMORY, 3, RF_ACTIVE },
111 { SYS_RES_MEMORY, 4, RF_ACTIVE },
112 { SYS_RES_IRQ, 0, RF_ACTIVE },
116 static device_method_t ehci_methods[] = {
117 /* Device interface */
118 DEVMETHOD(device_probe, exynos_ehci_probe),
119 DEVMETHOD(device_attach, exynos_ehci_attach),
120 DEVMETHOD(device_detach, exynos_ehci_detach),
121 DEVMETHOD(device_suspend, bus_generic_suspend),
122 DEVMETHOD(device_resume, bus_generic_resume),
123 DEVMETHOD(device_shutdown, bus_generic_shutdown),
126 DEVMETHOD(bus_print_child, bus_generic_print_child),
131 /* kobj_class definition */
132 static driver_t ehci_driver = {
138 static devclass_t ehci_devclass;
140 DRIVER_MODULE(ehci, simplebus, ehci_driver, ehci_devclass, 0, 0);
141 MODULE_DEPEND(ehci, usb, 1, 1, 1);
147 exynos_ehci_probe(device_t dev)
150 if (!ofw_bus_status_okay(dev))
153 if (ofw_bus_is_compatible(dev, "exynos,usb-ehci") == 0)
156 device_set_desc(dev, "Exynos integrated USB controller");
157 return (BUS_PROBE_DEFAULT);
161 gpio_ctrl(struct exynos_ehci_softc *esc, int dir, int power)
166 reg = bus_space_read_4(esc->gpio_bst, esc->gpio_bsh, GPX3DAT);
167 reg &= ~(1 << PIN_USB);
168 reg |= (power << PIN_USB);
169 bus_space_write_4(esc->gpio_bst, esc->gpio_bsh, GPX3DAT, reg);
171 /* Input/Output control */
172 reg = bus_space_read_4(esc->gpio_bst, esc->gpio_bsh, GPX3CON);
173 reg &= ~GPIO_CON(PIN_USB, GPIO_MASK);
174 reg |= GPIO_CON(PIN_USB, dir);
175 bus_space_write_4(esc->gpio_bst, esc->gpio_bsh, GPX3CON, reg);
181 phy_init(struct exynos_ehci_softc *esc)
185 gpio_ctrl(esc, GPIO_INPUT, 1);
187 /* set USB HOST mode */
188 bus_space_write_4(esc->sysreg_bst, esc->sysreg_bsh,
189 EXYNOS5_SYSREG_USB2_PHY, USB2_MODE_HOST);
192 bus_space_write_4(esc->pwr_bst, esc->pwr_bsh,
193 EXYNOS5_PWR_USBHOST_PHY, PHY_POWER_ON);
195 reg = bus_space_read_4(esc->host_bst, esc->host_bsh, 0x0);
196 reg &= ~(HOST_CTRL_CLK_MASK |
197 HOST_CTRL_RESET_PHY |
198 HOST_CTRL_RESET_PHY_ALL |
203 reg |= (HOST_CTRL_CLK_24MHZ |
204 HOST_CTRL_RESET_LINK);
205 bus_space_write_4(esc->host_bst, esc->host_bsh, 0x0, reg);
209 reg = bus_space_read_4(esc->host_bst, esc->host_bsh, 0x0);
210 reg &= ~(HOST_CTRL_RESET_LINK);
211 bus_space_write_4(esc->host_bst, esc->host_bsh, 0x0, reg);
213 gpio_ctrl(esc, GPIO_OUTPUT, 1);
219 exynos_ehci_attach(device_t dev)
221 struct exynos_ehci_softc *esc;
223 bus_space_handle_t bsh;
226 esc = device_get_softc(dev);
228 sc->sc_bus.parent = dev;
229 sc->sc_bus.devices = sc->sc_devices;
230 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
232 if (bus_alloc_resources(dev, exynos_ehci_spec, esc->res)) {
233 device_printf(dev, "could not allocate resources\n");
238 sc->sc_io_tag = rman_get_bustag(esc->res[0]);
239 bsh = rman_get_bushandle(esc->res[0]);
240 sc->sc_io_size = rman_get_size(esc->res[0]);
242 /* EHCI HOST ctrl registers */
243 esc->host_bst = rman_get_bustag(esc->res[1]);
244 esc->host_bsh = rman_get_bushandle(esc->res[1]);
247 esc->pwr_bst = rman_get_bustag(esc->res[2]);
248 esc->pwr_bsh = rman_get_bushandle(esc->res[2]);
251 esc->sysreg_bst = rman_get_bustag(esc->res[3]);
252 esc->sysreg_bsh = rman_get_bushandle(esc->res[3]);
255 esc->gpio_bst = rman_get_bustag(esc->res[4]);
256 esc->gpio_bsh = rman_get_bushandle(esc->res[4]);
258 /* get all DMA memory */
259 if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
260 &ehci_iterate_hw_softc))
264 * Set handle to USB related registers subregion used by
265 * generic EHCI driver.
267 err = bus_space_subregion(sc->sc_io_tag, bsh, 0x0,
268 sc->sc_io_size, &sc->sc_io_hdl);
274 /* Setup interrupt handler */
275 err = bus_setup_intr(dev, esc->res[5], INTR_TYPE_BIO | INTR_MPSAFE,
276 NULL, (driver_intr_t *)ehci_interrupt, sc,
279 device_printf(dev, "Could not setup irq, "
285 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
286 if (!sc->sc_bus.bdev) {
287 device_printf(dev, "Could not add USB device\n");
288 err = bus_teardown_intr(dev, esc->res[5],
291 device_printf(dev, "Could not tear down irq,"
295 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
297 strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor));
301 sc->sc_flags |= EHCI_SCFLG_DONEINIT;
302 err = device_probe_and_attach(sc->sc_bus.bdev);
304 device_printf(dev, "USB init failed err=%d\n", err);
306 device_delete_child(dev, sc->sc_bus.bdev);
307 sc->sc_bus.bdev = NULL;
309 err = bus_teardown_intr(dev, esc->res[5],
312 device_printf(dev, "Could not tear down irq,"
320 exynos_ehci_detach(device_t dev)
322 struct exynos_ehci_softc *esc;
326 esc = device_get_softc(dev);
329 if (sc->sc_flags & EHCI_SCFLG_DONEINIT)
333 * only call ehci_detach() after ehci_init()
335 if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
337 sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
341 * Disable interrupts that might have been switched on in
344 if (sc->sc_io_tag && sc->sc_io_hdl)
345 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
348 if (esc->res[5] && sc->sc_intr_hdl) {
349 err = bus_teardown_intr(dev, esc->res[5],
352 device_printf(dev, "Could not tear down irq,"
356 sc->sc_intr_hdl = NULL;
359 if (sc->sc_bus.bdev) {
360 device_delete_child(dev, sc->sc_bus.bdev);
361 sc->sc_bus.bdev = NULL;
364 /* During module unload there are lots of children leftover */
365 device_delete_children(dev);
367 bus_release_resources(dev, exynos_ehci_spec, esc->res);