Date: Wed, 6 Feb 2013 01:03:13 +0000 (UTC) From: Ganbold Tsagaankhuu <ganbold@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r246375 - head/sys/arm/allwinner Message-ID: <201302060103.r1613DRB009456@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
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 */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201302060103.r1613DRB009456>