From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/usb/common/common.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 138 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/usb/common/common.c b/kernel/drivers/usb/common/common.c
index 9c5c536..347fb3d 100644
--- a/kernel/drivers/usb/common/common.c
+++ b/kernel/drivers/usb/common/common.c
@@ -15,6 +15,30 @@
#include <linux/usb/of.h>
#include <linux/usb/otg.h>
#include <linux/of_platform.h>
+#include <linux/debugfs.h>
+#include "common.h"
+
+static const char *const ep_type_names[] = {
+ [USB_ENDPOINT_XFER_CONTROL] = "ctrl",
+ [USB_ENDPOINT_XFER_ISOC] = "isoc",
+ [USB_ENDPOINT_XFER_BULK] = "bulk",
+ [USB_ENDPOINT_XFER_INT] = "intr",
+};
+
+/**
+ * usb_ep_type_string() - Returns human readable-name of the endpoint type.
+ * @ep_type: The endpoint type to return human-readable name for. If it's not
+ * any of the types: USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT},
+ * usually got by usb_endpoint_type(), the string 'unknown' will be returned.
+ */
+const char *usb_ep_type_string(int ep_type)
+{
+ if (ep_type < 0 || ep_type >= ARRAY_SIZE(ep_type_names))
+ return "unknown";
+
+ return ep_type_names[ep_type];
+}
+EXPORT_SYMBOL_GPL(usb_ep_type_string);
const char *usb_otg_state_string(enum usb_otg_state state)
{
@@ -51,6 +75,19 @@
[USB_SPEED_SUPER_PLUS] = "super-speed-plus",
};
+static const char *const ssp_rate[] = {
+ [USB_SSP_GEN_UNKNOWN] = "UNKNOWN",
+ [USB_SSP_GEN_2x1] = "super-speed-plus-gen2x1",
+ [USB_SSP_GEN_1x2] = "super-speed-plus-gen1x2",
+ [USB_SSP_GEN_2x2] = "super-speed-plus-gen2x2",
+};
+
+/**
+ * usb_speed_string() - Returns human readable-name of the speed.
+ * @speed: The speed to return human-readable name for. If it's not
+ * any of the speeds defined in usb_device_speed enum, string for
+ * USB_SPEED_UNKNOWN will be returned.
+ */
const char *usb_speed_string(enum usb_device_speed speed)
{
if (speed < 0 || speed >= ARRAY_SIZE(speed_names))
@@ -59,6 +96,14 @@
}
EXPORT_SYMBOL_GPL(usb_speed_string);
+/**
+ * usb_get_maximum_speed - Get maximum requested speed for a given USB
+ * controller.
+ * @dev: Pointer to the given USB controller device
+ *
+ * The function gets the maximum speed string from property "maximum-speed",
+ * and returns the corresponding enum usb_device_speed.
+ */
enum usb_device_speed usb_get_maximum_speed(struct device *dev)
{
const char *maximum_speed;
@@ -68,12 +113,44 @@
if (ret < 0)
return USB_SPEED_UNKNOWN;
- ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
+ ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed);
+ if (ret > 0)
+ return USB_SPEED_SUPER_PLUS;
+ ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
return (ret < 0) ? USB_SPEED_UNKNOWN : ret;
}
EXPORT_SYMBOL_GPL(usb_get_maximum_speed);
+/**
+ * usb_get_maximum_ssp_rate - Get the signaling rate generation and lane count
+ * of a SuperSpeed Plus capable device.
+ * @dev: Pointer to the given USB controller device
+ *
+ * If the string from "maximum-speed" property is super-speed-plus-genXxY where
+ * 'X' is the generation number and 'Y' is the number of lanes, then this
+ * function returns the corresponding enum usb_ssp_rate.
+ */
+enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev)
+{
+ const char *maximum_speed;
+ int ret;
+
+ ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);
+ if (ret < 0)
+ return USB_SSP_GEN_UNKNOWN;
+
+ ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed);
+ return (ret < 0) ? USB_SSP_GEN_UNKNOWN : ret;
+}
+EXPORT_SYMBOL_GPL(usb_get_maximum_ssp_rate);
+
+/**
+ * usb_state_string - Returns human readable name for the state.
+ * @state: The state to return a human-readable name for. If it's not
+ * any of the states devices in usb_device_state_string enum,
+ * the string UNKNOWN will be returned.
+ */
const char *usb_state_string(enum usb_device_state state)
{
static const char *const names[] = {
@@ -100,7 +177,6 @@
[USB_DR_MODE_HOST] = "host",
[USB_DR_MODE_PERIPHERAL] = "peripheral",
[USB_DR_MODE_OTG] = "otg",
- [USB_DR_MODE_DRD] = "drd",
};
static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str)
@@ -123,6 +199,47 @@
return usb_get_dr_mode_from_string(dr_mode);
}
EXPORT_SYMBOL_GPL(usb_get_dr_mode);
+
+/**
+ * usb_decode_interval - Decode bInterval into the time expressed in 1us unit
+ * @epd: The descriptor of the endpoint
+ * @speed: The speed that the endpoint works as
+ *
+ * Function returns the interval expressed in 1us unit for servicing
+ * endpoint for data transfers.
+ */
+unsigned int usb_decode_interval(const struct usb_endpoint_descriptor *epd,
+ enum usb_device_speed speed)
+{
+ unsigned int interval = 0;
+
+ switch (usb_endpoint_type(epd)) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ /* uframes per NAK */
+ if (speed == USB_SPEED_HIGH)
+ interval = epd->bInterval;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ interval = 1 << (epd->bInterval - 1);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ /* uframes per NAK */
+ if (speed == USB_SPEED_HIGH && usb_endpoint_dir_out(epd))
+ interval = epd->bInterval;
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ if (speed >= USB_SPEED_HIGH)
+ interval = 1 << (epd->bInterval - 1);
+ else
+ interval = epd->bInterval;
+ break;
+ }
+
+ interval *= (speed >= USB_SPEED_HIGH) ? 125 : 1000;
+
+ return interval;
+}
+EXPORT_SYMBOL_GPL(usb_decode_interval);
#ifdef CONFIG_OF
/**
@@ -276,4 +393,23 @@
EXPORT_SYMBOL_GPL(usb_of_get_companion_dev);
#endif
+struct dentry *usb_debug_root;
+EXPORT_SYMBOL_GPL(usb_debug_root);
+
+static int __init usb_common_init(void)
+{
+ usb_debug_root = debugfs_create_dir("usb", NULL);
+ ledtrig_usb_init();
+ return 0;
+}
+
+static void __exit usb_common_exit(void)
+{
+ ledtrig_usb_exit();
+ debugfs_remove_recursive(usb_debug_root);
+}
+
+subsys_initcall(usb_common_init);
+module_exit(usb_common_exit);
+
MODULE_LICENSE("GPL");
--
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