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Use and set gpio pin to high to power up usb.

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Approved by: gonzo@
This commit is contained in:
ganbold 2013-02-06 01:03:13 +00:00
parent 34f6d259a3
commit e1ce6ad8dd
1 changed files with 17 additions and 1 deletions
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18
sys/arm/allwinner/a10_ehci.c
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@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$");
#include <sys/condvar.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/gpio.h>
#include <machine/bus.h>
#include <dev/ofw/ofw_bus.h>
@ -58,6 +59,8 @@ __FBSDID("$FreeBSD$");
#include <dev/usb/controller/ehci.h>
#include <dev/usb/controller/ehcireg.h>
#include "gpio_if.h"
#include "a10_clk.h"
#define EHCI_HC_DEVSTR "Allwinner Integrated USB 2.0 controller"
@ -70,8 +73,9 @@ __FBSDID("$FreeBSD$");
#define SW_ULPI_BYPASS (1 << 0)
#define SW_AHB_INCRX_ALIGN (1 << 8)
#define SW_AHB_INCR4 (1 << 9)
#define SW_AHB_INCR4 (1 << 9)
#define SW_AHB_INCR8 (1 << 10)
#define GPIO_USB2_PWR 227
#define A10_READ_4(sc, reg) \
bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, reg)
@ -101,6 +105,7 @@ a10_ehci_attach(device_t self)
{
ehci_softc_t *sc = device_get_softc(self);
bus_space_handle_t bsh;
device_t sc_gpio_dev;
int err;
int rid;
uint32_t reg_value = 0;
@ -153,6 +158,13 @@ a10_ehci_attach(device_t self)
sprintf(sc->sc_vendor, "Allwinner");
/* Get the GPIO device, we need this to give power to USB */
sc_gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
if (sc_gpio_dev == NULL) {
device_printf(self, "Error: failed to get the GPIO device\n");
goto error;
}
err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
@ -166,6 +178,10 @@ a10_ehci_attach(device_t self)
/* Enable clock for USB */
a10_clk_usb_activate();
/* Give power to USB */
GPIO_PIN_SETFLAGS(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_OUTPUT);
GPIO_PIN_SET(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_HIGH);
/* Enable passby */
reg_value = A10_READ_4(sc, SW_USB_PMU_IRQ_ENABLE);
reg_value |= SW_AHB_INCR8; /* AHB INCR8 enable */