svn commit: r246375 - head/sys/arm/allwinner

[Ganbold Tsagaankhuu]

Author: ganbold (doc committer)
Date: Wed Feb  6 01:03:13 2013
New Revision: 246375
URL: http://svnweb.freebsd.org/changeset/base/246375

Log:
  Use and set gpio pin to high to power up usb.
  
  Approved by: gonzo@

Modified:
  head/sys/arm/allwinner/a10_ehci.c

Modified: head/sys/arm/allwinner/a10_ehci.c
==============================================================================
--- head/sys/arm/allwinner/a10_ehci.c   Wed Feb  6 00:43:10 2013        
(r246374)
+++ head/sys/arm/allwinner/a10_ehci.c   Wed Feb  6 01:03:13 2013        
(r246375)
@@ -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 */
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