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drivers: usb: musb: add ti musb misc driver for wrapper

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Add a misc driver for MUSB wrapper, so that based on dr_mode the
USB devices can bind to USB host or USB device drivers.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Mugunthan V N 2016-11-17 14:38:08 +05:30 committed by Simon Glass
parent 195702217d
commit 28b8d5fd2b
3 changed files with 74 additions and 0 deletions
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9
drivers/usb/musb-new/Kconfig
View File

@ -14,6 +14,15 @@ config USB_MUSB_GADGET
help
Enables the MUSB USB dual-role controller in gadget mode.
config USB_MUSB_TI
bool "Enable TI OTG USB controller"
depends on DM_USB
default n
help
Say y here to enable support for the dual role high
speed USB controller based on the Mentor Graphics
silicon IP.
if USB_MUSB_HOST || USB_MUSB_GADGET
config USB_MUSB_PIC32

1
drivers/usb/musb-new/Makefile
View File

@ -12,6 +12,7 @@ obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
obj-$(CONFIG_USB_MUSB_PIC32) += pic32.o
obj-$(CONFIG_USB_MUSB_SUNXI) += sunxi.o
obj-$(CONFIG_USB_MUSB_TI) += ti-musb.o
ccflags-y := $(call cc-option,-Wno-unused-variable) \
$(call cc-option,-Wno-unused-but-set-variable) \

64
drivers/usb/musb-new/ti-musb.c Normal file
View File

@ -0,0 +1,64 @@
/*
* MISC driver for TI MUSB Glue.
*
* (C) Copyright 2016
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <console.h>
#include <dm.h>
#include <linux/usb/otg.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_DM_USB
static int ti_musb_wrapper_bind(struct udevice *parent)
{
const void *fdt = gd->fdt_blob;
int node;
int ret;
for (node = fdt_first_subnode(fdt, parent->of_offset); node > 0;
node = fdt_next_subnode(fdt, node)) {
struct udevice *dev;
const char *name = fdt_get_name(fdt, node, NULL);
enum usb_dr_mode dr_mode;
struct driver *drv;
if (strncmp(name, "usb@", 4))
continue;
dr_mode = usb_get_dr_mode(node);
switch (dr_mode) {
case USB_DR_MODE_PERIPHERAL:
/* Bind MUSB device */
break;
case USB_DR_MODE_HOST:
/* Bind MUSB host */
break;
default:
break;
};
}
return 0;
}
static const struct udevice_id ti_musb_ids[] = {
{ .compatible = "ti,am33xx-usb" },
{ }
};
U_BOOT_DRIVER(ti_musb_wrapper) = {
.name = "ti-musb-wrapper",
.id = UCLASS_MISC,
.of_match = ti_musb_ids,
.bind = ti_musb_wrapper_bind,
};
#endif /* CONFIG_DM_USB */