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129 lines
3.8 KiB
129 lines
3.8 KiB
#ifndef __LINUX_CLASS_DUAL_ROLE_H__
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#define __LINUX_CLASS_DUAL_ROLE_H__
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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struct device;
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enum dual_role_supported_modes {
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DUAL_ROLE_SUPPORTED_MODES_DFP_AND_UFP = 0,
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DUAL_ROLE_SUPPORTED_MODES_DFP,
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DUAL_ROLE_SUPPORTED_MODES_UFP,
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/*The following should be the last element*/
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DUAL_ROLE_PROP_SUPPORTED_MODES_TOTAL,
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};
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enum {
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DUAL_ROLE_PROP_MODE_UFP = 0,
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DUAL_ROLE_PROP_MODE_DFP,
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DUAL_ROLE_PROP_MODE_NONE,
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/*The following should be the last element*/
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DUAL_ROLE_PROP_MODE_TOTAL,
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};
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enum {
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DUAL_ROLE_PROP_PR_SRC = 0,
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DUAL_ROLE_PROP_PR_SNK,
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DUAL_ROLE_PROP_PR_NONE,
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/*The following should be the last element*/
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DUAL_ROLE_PROP_PR_TOTAL,
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};
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enum {
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DUAL_ROLE_PROP_DR_HOST = 0,
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DUAL_ROLE_PROP_DR_DEVICE,
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DUAL_ROLE_PROP_DR_NONE,
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/*The following should be the last element*/
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DUAL_ROLE_PROP_DR_TOTAL,
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};
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enum {
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DUAL_ROLE_PROP_VCONN_SUPPLY_NO = 0,
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DUAL_ROLE_PROP_VCONN_SUPPLY_YES,
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/*The following should be the last element*/
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DUAL_ROLE_PROP_VCONN_SUPPLY_TOTAL,
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};
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enum dual_role_property {
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DUAL_ROLE_PROP_SUPPORTED_MODES = 0,
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DUAL_ROLE_PROP_MODE,
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DUAL_ROLE_PROP_PR,
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DUAL_ROLE_PROP_DR,
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DUAL_ROLE_PROP_VCONN_SUPPLY,
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};
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struct dual_role_phy_instance;
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/* Description of typec port */
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struct dual_role_phy_desc {
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/* /sys/class/dual_role_usb/<name>/ */
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const char *name;
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enum dual_role_supported_modes supported_modes;
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enum dual_role_property *properties;
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size_t num_properties;
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/* Callback for "cat /sys/class/dual_role_usb/<name>/<property>" */
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int (*get_property)(struct dual_role_phy_instance *dual_role,
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enum dual_role_property prop,
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unsigned int *val);
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/* Callback for "echo <value> >
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* /sys/class/dual_role_usb/<name>/<property>" */
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int (*set_property)(struct dual_role_phy_instance *dual_role,
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enum dual_role_property prop,
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const unsigned int *val);
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/* Decides whether userspace can change a specific property */
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int (*property_is_writeable)(struct dual_role_phy_instance *dual_role,
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enum dual_role_property prop);
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};
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struct dual_role_phy_instance {
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const struct dual_role_phy_desc *desc;
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/* Driver private data */
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void *drv_data;
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struct device dev;
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struct work_struct changed_work;
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};
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#if IS_ENABLED(CONFIG_DUAL_ROLE_USB_INTF)
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extern void dual_role_instance_changed(struct dual_role_phy_instance
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*dual_role);
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extern struct dual_role_phy_instance *__must_check
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devm_dual_role_instance_register(struct device *parent,
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const struct dual_role_phy_desc *desc);
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extern void devm_dual_role_instance_unregister(struct device *dev,
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struct dual_role_phy_instance
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*dual_role);
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extern int dual_role_get_property(struct dual_role_phy_instance *dual_role,
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enum dual_role_property prop,
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unsigned int *val);
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extern int dual_role_set_property(struct dual_role_phy_instance *dual_role,
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enum dual_role_property prop,
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const unsigned int *val);
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extern int dual_role_property_is_writeable(struct dual_role_phy_instance
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*dual_role,
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enum dual_role_property prop);
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extern void *dual_role_get_drvdata(struct dual_role_phy_instance *dual_role);
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#else /* CONFIG_DUAL_ROLE_USB_INTF */
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static inline void dual_role_instance_changed(struct dual_role_phy_instance
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*dual_role){}
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static inline struct dual_role_phy_instance *__must_check
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devm_dual_role_instance_register(struct device *parent,
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const struct dual_role_phy_desc *desc)
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{
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return ERR_PTR(-ENOSYS);
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}
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static inline void devm_dual_role_instance_unregister(struct device *dev,
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struct dual_role_phy_instance
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*dual_role){}
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static inline void *dual_role_get_drvdata(struct dual_role_phy_instance
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*dual_role)
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{
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return ERR_PTR(-ENOSYS);
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}
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#endif /* CONFIG_DUAL_ROLE_USB_INTF */
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#endif /* __LINUX_CLASS_DUAL_ROLE_H__ */
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