diff options
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 35 | ||||
| -rw-r--r-- | drivers/usb/gadget/bcm_udc_otg_phy.c | 4 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_fastboot.c | 12 |
3 files changed, 49 insertions, 2 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig new file mode 100644 index 0000000000..f4698f469e --- /dev/null +++ b/drivers/usb/gadget/Kconfig @@ -0,0 +1,35 @@ +# +# USB Gadget support on a system involves +# (a) a peripheral controller, and +# (b) the gadget driver using it. +# +# NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !! +# +# - Host systems (like PCs) need CONFIG_USB (with "A" jacks). +# - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks). +# - Some systems have both kinds of controllers. +# +# With help from a special transceiver and a "Mini-AB" jack, systems with +# both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG). +# + +menuconfig USB_GADGET + bool "USB Gadget Support" + help + USB is a master/slave protocol, organized with one master + host (such as a PC) controlling up to 127 peripheral devices. + The USB hardware is asymmetric, which makes it easier to set up: + you can't connect a "to-the-host" connector to a peripheral. + + U-Boot can run in the host, or in the peripheral. In both cases + you need a low level bus controller driver, and some software + talking to it. Peripheral controllers are often discrete silicon, + or are integrated with the CPU in a microcontroller. The more + familiar host side controllers have names like "EHCI", "OHCI", + or "UHCI", and are usually integrated into southbridges on PC + motherboards. + + Enable this configuration option if you want to run U-Boot inside + a USB peripheral device. Configure one hardware driver for your + peripheral/device side bus controller, and a "gadget driver" for + your peripheral protocol. diff --git a/drivers/usb/gadget/bcm_udc_otg_phy.c b/drivers/usb/gadget/bcm_udc_otg_phy.c index 10b2e132eb..877f162630 100644 --- a/drivers/usb/gadget/bcm_udc_otg_phy.c +++ b/drivers/usb/gadget/bcm_udc_otg_phy.c @@ -8,12 +8,16 @@ #include <common.h> #include <asm/io.h> #include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> #include "dwc2_udc_otg_priv.h" #include "bcm_udc_otg.h" void otg_phy_init(struct dwc2_udc *dev) { + /* turn on the USB OTG clocks */ + clk_usb_otg_enable((void *)HSOTG_BASE_ADDR); + /* set Phy to driving mode */ wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET, HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK); diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c index a54b4eebcc..2e87feeece 100644 --- a/drivers/usb/gadget/f_fastboot.c +++ b/drivers/usb/gadget/f_fastboot.c @@ -413,8 +413,16 @@ static void cb_getvar(struct usb_ep *ep, struct usb_request *req) else strcpy(response, "FAILValue not set"); } else { - printf("WARNING: unknown variable: %s\n", cmd); - strcpy(response, "FAILVariable not implemented"); + char envstr[32]; + + snprintf(envstr, sizeof(envstr) - 1, "fastboot.%s", cmd); + s = getenv(envstr); + if (s) { + strncat(response, s, chars_left); + } else { + printf("WARNING: unknown variable: %s\n", cmd); + strcpy(response, "FAILVariable not implemented"); + } } fastboot_tx_write_str(response); } |