diff options
Diffstat (limited to 'roms/u-boot/drivers/usb/common/common.c')
-rw-r--r-- | roms/u-boot/drivers/usb/common/common.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/usb/common/common.c b/roms/u-boot/drivers/usb/common/common.c new file mode 100644 index 000000000..2a47f40bb --- /dev/null +++ b/roms/u-boot/drivers/usb/common/common.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Provides code common for host and device side USB. + * + * (C) Copyright 2016 + * Texas Instruments Incorporated, <www.ti.com> + */ + +#include <common.h> +#include <dm.h> +#include <asm/global_data.h> +#include <linux/usb/otg.h> +#include <linux/usb/ch9.h> +#include <linux/usb/phy.h> + +DECLARE_GLOBAL_DATA_PTR; + +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(ofnode node) +{ + const char *dr_mode; + int i; + + dr_mode = ofnode_read_string(node, "dr_mode"); + if (!dr_mode) { + pr_err("usb dr_mode not found\n"); + return USB_DR_MODE_UNKNOWN; + } + + 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 const char *const speed_names[] = { + [USB_SPEED_UNKNOWN] = "UNKNOWN", + [USB_SPEED_LOW] = "low-speed", + [USB_SPEED_FULL] = "full-speed", + [USB_SPEED_HIGH] = "high-speed", + [USB_SPEED_WIRELESS] = "wireless", + [USB_SPEED_SUPER] = "super-speed", + [USB_SPEED_SUPER_PLUS] = "super-speed-plus", +}; + +const char *usb_speed_string(enum usb_device_speed speed) +{ + if (speed < 0 || speed >= ARRAY_SIZE(speed_names)) + speed = USB_SPEED_UNKNOWN; + return speed_names[speed]; +} + +enum usb_device_speed usb_get_maximum_speed(ofnode node) +{ + const char *max_speed; + int i; + + max_speed = ofnode_read_string(node, "maximum-speed"); + if (!max_speed) { + pr_err("usb maximum-speed not found\n"); + return USB_SPEED_UNKNOWN; + } + + for (i = 0; i < ARRAY_SIZE(speed_names); i++) + if (!strcmp(max_speed, speed_names[i])) + return i; + + return USB_SPEED_UNKNOWN; +} + +#if CONFIG_IS_ENABLED(DM_USB) +static const char *const usbphy_modes[] = { + [USBPHY_INTERFACE_MODE_UNKNOWN] = "", + [USBPHY_INTERFACE_MODE_UTMI] = "utmi", + [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide", +}; + +enum usb_phy_interface usb_get_phy_mode(ofnode node) +{ + const char *phy_type; + int i; + + phy_type = ofnode_get_property(node, "phy_type", NULL); + if (!phy_type) + return USBPHY_INTERFACE_MODE_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) + if (!strcmp(phy_type, usbphy_modes[i])) + return i; + + return USBPHY_INTERFACE_MODE_UNKNOWN; +} +#endif |