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 --- drivers/usb/musb-new/Kconfig | 9 +++++ drivers/usb/musb-new/Makefile | 1 + drivers/usb/musb-new/ti-musb.c | 89 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) create mode 100644 drivers/usb/musb-new/ti-musb.c
diff --git a/drivers/usb/musb-new/Kconfig b/drivers/usb/musb-new/Kconfig index 6a6cb93..2bcc646 100644 --- a/drivers/usb/musb-new/Kconfig +++ b/drivers/usb/musb-new/Kconfig @@ -13,6 +13,15 @@ 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 y + help + Say y here to enable support for the TI OTG USB controller + used on TI SoCs. fadsf fa fad af adf adf asf adfa fad fd af + asdf asdf fadsf asf s + if USB_MUSB_HOST || USB_MUSB_GADGET
config USB_MUSB_SUNXI diff --git a/drivers/usb/musb-new/Makefile b/drivers/usb/musb-new/Makefile index 072d516..d137044 100644 --- a/drivers/usb/musb-new/Makefile +++ b/drivers/usb/musb-new/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_USB_MUSB_DSPS) += musb_dsps.o obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o obj-$(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) \ diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c new file mode 100644 index 0000000..c1a4952 --- /dev/null +++ b/drivers/usb/musb-new/ti-musb.c @@ -0,0 +1,89 @@ +/* + * MISC driver for TI MUSB Glue. + * + * (C) Copyright 2012-2016 + * 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 const char *const usb_dr_modes[] = { + [USB_DR_MODE_UNKNOWN] = "", + [USB_DR_MODE_HOST] = "host", + [USB_DR_MODE_PERIPHERAL] = "peripheral", + [USB_DR_MODE_OTG] = "otg", +}; + +enum usb_dr_mode usb_get_dr_mode(const char *dr_mode) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) + if (!strcmp(dr_mode, usb_dr_modes[i])) + return i; + + return USB_DR_MODE_UNKNOWN; +} + +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); + const char *dr_mode_str; + enum usb_dr_mode dr_mode; + struct driver *drv; + + if (strncmp(name, "usb@", 4)) + continue; + + dr_mode_str = fdt_getprop(fdt, node, "dr_mode", NULL); + if (!dr_mode_str) { + error("usb dr_mode not found\n"); + return -ENOENT; + } + + dr_mode = usb_get_dr_mode(dr_mode_str); + 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 */