debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/usb/chipidea/ci.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0
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+/* SPDX-License-Identifier: GPL-2.0 */
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 /*
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  * ci.h - common structures, functions, and macros of the ChipIdea driver
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  *
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@@ -16,6 +16,7 @@
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 #include <linux/usb/gadget.h>
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 #include <linux/usb/otg-fsm.h>
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 #include <linux/usb/otg.h>
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+#include <linux/usb/role.h>
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 #include <linux/ulpi/interface.h>
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21
 
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 /******************************************************************************
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@@ -24,6 +25,7 @@
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 #define TD_PAGE_COUNT      5
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 #define CI_HDRC_PAGE_SIZE  4096ul /* page size for TD's */
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 #define ENDPT_MAX          32
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+#define CI_MAX_BUF_SIZE	(TD_PAGE_COUNT * CI_HDRC_PAGE_SIZE)
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29
 
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 /******************************************************************************
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  * REGISTERS
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@@ -202,6 +204,7 @@
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  * @in_lpm: if the core in low power mode
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  * @wakeup_int: if wakeup interrupt occur
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  * @rev: The revision number for controller
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+ * @mutex: protect code from concorrent running when doing role switch
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  */
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 struct ci_hdrc {
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 	struct device			*dev;
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@@ -217,6 +220,7 @@
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 	ktime_t				hr_timeouts[NUM_OTG_FSM_TIMERS];
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 	unsigned			enabled_otg_timer_bits;
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 	enum otg_fsm_timer		next_otg_timer;
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+	struct usb_role_switch		*role_switch;
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 	struct work_struct		work;
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 	struct workqueue_struct		*wq;
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@@ -254,6 +258,7 @@
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 	bool				in_lpm;
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 	bool				wakeup_int;
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 	enum ci_revision		rev;
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+	struct mutex                    mutex;
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 };
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 static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci)
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@@ -290,6 +295,26 @@
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 	ci->roles[role]->stop(ci);
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 }
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+static inline enum usb_role ci_role_to_usb_role(struct ci_hdrc *ci)
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+{
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+	if (ci->role == CI_ROLE_HOST)
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+		return USB_ROLE_HOST;
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+	else if (ci->role == CI_ROLE_GADGET && ci->vbus_active)
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+		return USB_ROLE_DEVICE;
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+	else
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+		return USB_ROLE_NONE;
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+}
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+
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+static inline enum ci_role usb_role_to_ci_role(enum usb_role role)
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+{
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+	if (role == USB_ROLE_HOST)
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+		return CI_ROLE_HOST;
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+	else if (role == USB_ROLE_DEVICE)
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+		return CI_ROLE_GADGET;
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+	else
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+		return CI_ROLE_END;
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+}
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+
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 /**
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  * hw_read_id_reg: reads from a identification register
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  * @ci: the controller