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- Add helpers to count items in a property array (Andy Shevchenko). - Extend "software nodes" support to be more convenient for representing device properties supplied by drivers (Heikki Krogerus). - Add device_find_child_by_name() helper to the driver core (Heikki Krogerus). - Extend device connection code to also look for references provided via fwnode pointers (Heikki Krogerus). - Start to register proper struct device objects for USB Type-C muxes and orientation switches (Heikki Krogerus). - Update the intel_cht_int33fe driver to describe devices in a more general way with the help of "software nodes" (Heikki Krogerus). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl0jLKMSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxJIUQAJ7vJ9CVPzcFK8S6FkDD1nNUbZqnHhpe v9u2e347Wb5TyxWrzdgzBWw3JmJsi78kO8R82fJSZgkaqTWsxWxbPH6K+OSU0gxB lU8A5opk/P8ChAEGz0hCIXVYgTWRlgETQnAsUspoPPw/9ypxY/lZJ2P3QIvDsn6Q wsfFEdshHXrqOzWg5XxWVMogUhrDm2us/xs1HC6eWcmABggrf3m6cr/KxABZK5Hx PIhIRJT8BN5e9wB2dKNcxNoz0XLem2pW2EN1vHHEVwSbxJE45yJqiz4cXRxHYwrT GCXDYUcwiwtScvXRfl4Ihm8E1+hDczGW0FUR0A2Y9QB15zWvJy8ff1GlHhbROoSV 3T48xu6iAWuz9/i6BrJSZ9C1hya867v/S8ccBEnHRTtJwqSEHRBmzyINbxqtcENe LY4cGcZAjkDnWOXz7cHbM4uXwn+XYQHCbi+bkHWXEEKRqx6LWFOaGoSR6XlqRBrA H/RSg38GU7KTCLun/YLezuwbT08lvDoere9B3psxNW2XW7ufjL5DSnxRFm0hdBMv zWMAi/6a6yr1hpUyCXZTlnEYI7Hqx3dDTinQe8x8BeJ2CRUnFqmH+1Y0ihd8vCvf 2k9tS2WAt72dFOckwwWOX9xEQIHGInkDWUx8MHbEuTtW7R61NTdCiYR/xxZhkTOr aB3xFjSGAv87 =jOFk -----END PGP SIGNATURE----- Merge tag 'devprop-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull device properties framework updates from Rafael Wysocki: "These add helpers for counting items in a property array and extend the "software nodes" support to be more convenient for representing device properties supplied by drivers and make the intel_cht_int33fe driver use that. Specifics: - Add helpers to count items in a property array (Andy Shevchenko). - Extend "software nodes" support to be more convenient for representing device properties supplied by drivers (Heikki Krogerus). - Add device_find_child_by_name() helper to the driver core (Heikki Krogerus). - Extend device connection code to also look for references provided via fwnode pointers (Heikki Krogerus). - Start to register proper struct device objects for USB Type-C muxes and orientation switches (Heikki Krogerus). - Update the intel_cht_int33fe driver to describe devices in a more general way with the help of "software nodes" (Heikki Krogerus)" * tag 'devprop-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: device property: Add helpers to count items in an array platform/x86: intel_cht_int33fe: Replacing the old connections with references platform/x86: intel_cht_int33fe: Supply fwnodes for the external dependencies platform/x86: intel_cht_int33fe: Provide fwnode for the USB connector platform/x86: intel_cht_int33fe: Provide software nodes for the devices platform/x86: intel_cht_int33fe: Remove unused fusb302 device property platform/x86: intel_cht_int33fe: Register max17047 in its own function usb: typec: Registering real device entries for the muxes device connection: Find connections also by checking the references device property: Introduce fwnode_find_reference() ACPI / property: Don't limit named child node matching to data nodes driver core: Add helper device_find_child_by_name() software node: Add software_node_get_reference_args() software node: Use kobject name when finding child nodes by name software node: Add support for static node descriptors software node: Simplify software_node_release() function software node: Allow node creation without properties
436 lines
14 KiB
C
436 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* property.h - Unified device property interface.
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*
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* Copyright (C) 2014, Intel Corporation
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* Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* Mika Westerberg <mika.westerberg@linux.intel.com>
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*/
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#ifndef _LINUX_PROPERTY_H_
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#define _LINUX_PROPERTY_H_
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#include <linux/bits.h>
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#include <linux/fwnode.h>
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#include <linux/types.h>
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struct device;
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enum dev_prop_type {
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DEV_PROP_U8,
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DEV_PROP_U16,
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DEV_PROP_U32,
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DEV_PROP_U64,
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DEV_PROP_STRING,
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DEV_PROP_MAX,
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};
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enum dev_dma_attr {
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DEV_DMA_NOT_SUPPORTED,
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DEV_DMA_NON_COHERENT,
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DEV_DMA_COHERENT,
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};
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struct fwnode_handle *dev_fwnode(struct device *dev);
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bool device_property_present(struct device *dev, const char *propname);
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int device_property_read_u8_array(struct device *dev, const char *propname,
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u8 *val, size_t nval);
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int device_property_read_u16_array(struct device *dev, const char *propname,
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u16 *val, size_t nval);
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int device_property_read_u32_array(struct device *dev, const char *propname,
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u32 *val, size_t nval);
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int device_property_read_u64_array(struct device *dev, const char *propname,
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u64 *val, size_t nval);
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int device_property_read_string_array(struct device *dev, const char *propname,
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const char **val, size_t nval);
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int device_property_read_string(struct device *dev, const char *propname,
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const char **val);
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int device_property_match_string(struct device *dev,
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const char *propname, const char *string);
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bool fwnode_device_is_available(const struct fwnode_handle *fwnode);
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bool fwnode_property_present(const struct fwnode_handle *fwnode,
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const char *propname);
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int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
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const char *propname, u8 *val,
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size_t nval);
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int fwnode_property_read_u16_array(const struct fwnode_handle *fwnode,
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const char *propname, u16 *val,
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size_t nval);
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int fwnode_property_read_u32_array(const struct fwnode_handle *fwnode,
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const char *propname, u32 *val,
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size_t nval);
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int fwnode_property_read_u64_array(const struct fwnode_handle *fwnode,
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const char *propname, u64 *val,
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size_t nval);
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int fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
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const char *propname, const char **val,
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size_t nval);
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int fwnode_property_read_string(const struct fwnode_handle *fwnode,
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const char *propname, const char **val);
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int fwnode_property_match_string(const struct fwnode_handle *fwnode,
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const char *propname, const char *string);
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int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
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const char *prop, const char *nargs_prop,
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unsigned int nargs, unsigned int index,
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struct fwnode_reference_args *args);
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struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode,
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const char *name,
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unsigned int index);
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struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode);
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struct fwnode_handle *fwnode_get_next_parent(
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struct fwnode_handle *fwnode);
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struct fwnode_handle *fwnode_get_next_child_node(
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const struct fwnode_handle *fwnode, struct fwnode_handle *child);
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struct fwnode_handle *fwnode_get_next_available_child_node(
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const struct fwnode_handle *fwnode, struct fwnode_handle *child);
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#define fwnode_for_each_child_node(fwnode, child) \
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for (child = fwnode_get_next_child_node(fwnode, NULL); child; \
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child = fwnode_get_next_child_node(fwnode, child))
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#define fwnode_for_each_available_child_node(fwnode, child) \
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for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
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child = fwnode_get_next_available_child_node(fwnode, child))
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struct fwnode_handle *device_get_next_child_node(
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struct device *dev, struct fwnode_handle *child);
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#define device_for_each_child_node(dev, child) \
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for (child = device_get_next_child_node(dev, NULL); child; \
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child = device_get_next_child_node(dev, child))
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struct fwnode_handle *fwnode_get_named_child_node(
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const struct fwnode_handle *fwnode, const char *childname);
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struct fwnode_handle *device_get_named_child_node(struct device *dev,
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const char *childname);
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struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
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void fwnode_handle_put(struct fwnode_handle *fwnode);
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int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index);
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unsigned int device_get_child_node_count(struct device *dev);
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static inline bool device_property_read_bool(struct device *dev,
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const char *propname)
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{
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return device_property_present(dev, propname);
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}
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static inline int device_property_read_u8(struct device *dev,
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const char *propname, u8 *val)
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{
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return device_property_read_u8_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u16(struct device *dev,
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const char *propname, u16 *val)
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{
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return device_property_read_u16_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u32(struct device *dev,
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const char *propname, u32 *val)
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{
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return device_property_read_u32_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u64(struct device *dev,
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const char *propname, u64 *val)
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{
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return device_property_read_u64_array(dev, propname, val, 1);
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}
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static inline int device_property_count_u8(struct device *dev, const char *propname)
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{
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return device_property_read_u8_array(dev, propname, NULL, 0);
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}
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static inline int device_property_count_u16(struct device *dev, const char *propname)
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{
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return device_property_read_u16_array(dev, propname, NULL, 0);
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}
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static inline int device_property_count_u32(struct device *dev, const char *propname)
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{
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return device_property_read_u32_array(dev, propname, NULL, 0);
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}
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static inline int device_property_count_u64(struct device *dev, const char *propname)
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{
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return device_property_read_u64_array(dev, propname, NULL, 0);
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}
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static inline bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
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const char *propname)
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{
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return fwnode_property_present(fwnode, propname);
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}
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static inline int fwnode_property_read_u8(const struct fwnode_handle *fwnode,
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const char *propname, u8 *val)
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{
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return fwnode_property_read_u8_array(fwnode, propname, val, 1);
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}
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static inline int fwnode_property_read_u16(const struct fwnode_handle *fwnode,
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const char *propname, u16 *val)
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{
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return fwnode_property_read_u16_array(fwnode, propname, val, 1);
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}
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static inline int fwnode_property_read_u32(const struct fwnode_handle *fwnode,
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const char *propname, u32 *val)
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{
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return fwnode_property_read_u32_array(fwnode, propname, val, 1);
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}
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static inline int fwnode_property_read_u64(const struct fwnode_handle *fwnode,
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const char *propname, u64 *val)
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{
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return fwnode_property_read_u64_array(fwnode, propname, val, 1);
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}
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static inline int fwnode_property_count_u8(const struct fwnode_handle *fwnode,
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const char *propname)
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{
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return fwnode_property_read_u8_array(fwnode, propname, NULL, 0);
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}
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static inline int fwnode_property_count_u16(const struct fwnode_handle *fwnode,
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const char *propname)
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{
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return fwnode_property_read_u16_array(fwnode, propname, NULL, 0);
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}
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static inline int fwnode_property_count_u32(const struct fwnode_handle *fwnode,
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const char *propname)
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{
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return fwnode_property_read_u32_array(fwnode, propname, NULL, 0);
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}
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static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
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const char *propname)
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{
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return fwnode_property_read_u64_array(fwnode, propname, NULL, 0);
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}
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/**
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* struct property_entry - "Built-in" device property representation.
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* @name: Name of the property.
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* @length: Length of data making up the value.
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* @is_array: True when the property is an array.
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* @type: Type of the data in unions.
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* @pointer: Pointer to the property (an array of items of the given type).
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* @value: Value of the property (when it is a single item of the given type).
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*/
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struct property_entry {
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const char *name;
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size_t length;
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bool is_array;
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enum dev_prop_type type;
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union {
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union {
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const u8 *u8_data;
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const u16 *u16_data;
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const u32 *u32_data;
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const u64 *u64_data;
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const char * const *str;
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} pointer;
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union {
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u8 u8_data;
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u16 u16_data;
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u32 u32_data;
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u64 u64_data;
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const char *str;
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} value;
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};
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};
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/*
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* Note: the below four initializers for the anonymous union are carefully
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* crafted to avoid gcc-4.4.4's problems with initialization of anon unions
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* and structs.
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*/
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#define PROPERTY_ENTRY_INTEGER_ARRAY(_name_, _type_, _Type_, _val_) \
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(struct property_entry) { \
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.name = _name_, \
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.length = ARRAY_SIZE(_val_) * sizeof(_type_), \
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.is_array = true, \
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.type = DEV_PROP_##_Type_, \
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{ .pointer = { ._type_##_data = _val_ } }, \
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}
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#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u8, U8, _val_)
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#define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u16, U16, _val_)
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#define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u32, U32, _val_)
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#define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u64, U64, _val_)
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#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
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(struct property_entry) { \
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.name = _name_, \
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.length = ARRAY_SIZE(_val_) * sizeof(const char *), \
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.is_array = true, \
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.type = DEV_PROP_STRING, \
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{ .pointer = { .str = _val_ } }, \
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}
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#define PROPERTY_ENTRY_INTEGER(_name_, _type_, _Type_, _val_) \
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(struct property_entry) { \
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.name = _name_, \
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.length = sizeof(_type_), \
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.type = DEV_PROP_##_Type_, \
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{ .value = { ._type_##_data = _val_ } }, \
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}
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#define PROPERTY_ENTRY_U8(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER(_name_, u8, U8, _val_)
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#define PROPERTY_ENTRY_U16(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER(_name_, u16, U16, _val_)
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#define PROPERTY_ENTRY_U32(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER(_name_, u32, U32, _val_)
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#define PROPERTY_ENTRY_U64(_name_, _val_) \
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PROPERTY_ENTRY_INTEGER(_name_, u64, U64, _val_)
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#define PROPERTY_ENTRY_STRING(_name_, _val_) \
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(struct property_entry) { \
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.name = _name_, \
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.length = sizeof(const char *), \
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.type = DEV_PROP_STRING, \
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{ .value = { .str = _val_ } }, \
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}
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#define PROPERTY_ENTRY_BOOL(_name_) \
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(struct property_entry) { \
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.name = _name_, \
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}
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struct property_entry *
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property_entries_dup(const struct property_entry *properties);
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void property_entries_free(const struct property_entry *properties);
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int device_add_properties(struct device *dev,
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const struct property_entry *properties);
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void device_remove_properties(struct device *dev);
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bool device_dma_supported(struct device *dev);
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enum dev_dma_attr device_get_dma_attr(struct device *dev);
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const void *device_get_match_data(struct device *dev);
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int device_get_phy_mode(struct device *dev);
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void *device_get_mac_address(struct device *dev, char *addr, int alen);
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int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
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void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
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char *addr, int alen);
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struct fwnode_handle *fwnode_graph_get_next_endpoint(
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const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
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struct fwnode_handle *
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fwnode_graph_get_port_parent(const struct fwnode_handle *fwnode);
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struct fwnode_handle *fwnode_graph_get_remote_port_parent(
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const struct fwnode_handle *fwnode);
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struct fwnode_handle *fwnode_graph_get_remote_port(
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const struct fwnode_handle *fwnode);
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struct fwnode_handle *fwnode_graph_get_remote_endpoint(
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const struct fwnode_handle *fwnode);
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struct fwnode_handle *
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fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
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u32 endpoint);
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/*
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* Fwnode lookup flags
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*
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* @FWNODE_GRAPH_ENDPOINT_NEXT: In the case of no exact match, look for the
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* closest endpoint ID greater than the specified
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* one.
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* @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
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* endpoint of the given endpoint belongs to,
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* may be disabled.
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*/
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#define FWNODE_GRAPH_ENDPOINT_NEXT BIT(0)
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#define FWNODE_GRAPH_DEVICE_DISABLED BIT(1)
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struct fwnode_handle *
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fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
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u32 port, u32 endpoint, unsigned long flags);
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#define fwnode_graph_for_each_endpoint(fwnode, child) \
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for (child = NULL; \
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(child = fwnode_graph_get_next_endpoint(fwnode, child)); )
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int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
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struct fwnode_endpoint *endpoint);
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|
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|
/* -------------------------------------------------------------------------- */
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/* Software fwnode support - when HW description is incomplete or missing */
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|
|
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struct software_node;
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|
|
|
/**
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|
* struct software_node_ref_args - Reference with additional arguments
|
|
* @node: Reference to a software node
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|
* @nargs: Number of elements in @args array
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|
* @args: Integer arguments
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|
*/
|
|
struct software_node_ref_args {
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|
const struct software_node *node;
|
|
unsigned int nargs;
|
|
u64 args[NR_FWNODE_REFERENCE_ARGS];
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|
};
|
|
|
|
/**
|
|
* struct software_node_reference - Named software node reference property
|
|
* @name: Name of the property
|
|
* @nrefs: Number of elements in @refs array
|
|
* @refs: Array of references with optional arguments
|
|
*/
|
|
struct software_node_reference {
|
|
const char *name;
|
|
unsigned int nrefs;
|
|
const struct software_node_ref_args *refs;
|
|
};
|
|
|
|
/**
|
|
* struct software_node - Software node description
|
|
* @name: Name of the software node
|
|
* @parent: Parent of the software node
|
|
* @properties: Array of device properties
|
|
* @references: Array of software node reference properties
|
|
*/
|
|
struct software_node {
|
|
const char *name;
|
|
const struct software_node *parent;
|
|
const struct property_entry *properties;
|
|
const struct software_node_reference *references;
|
|
};
|
|
|
|
bool is_software_node(const struct fwnode_handle *fwnode);
|
|
const struct software_node *to_software_node(struct fwnode_handle *fwnode);
|
|
struct fwnode_handle *software_node_fwnode(const struct software_node *node);
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|
|
|
int software_node_register_nodes(const struct software_node *nodes);
|
|
void software_node_unregister_nodes(const struct software_node *nodes);
|
|
|
|
int software_node_register(const struct software_node *node);
|
|
|
|
int software_node_notify(struct device *dev, unsigned long action);
|
|
|
|
struct fwnode_handle *
|
|
fwnode_create_software_node(const struct property_entry *properties,
|
|
const struct fwnode_handle *parent);
|
|
void fwnode_remove_software_node(struct fwnode_handle *fwnode);
|
|
|
|
#endif /* _LINUX_PROPERTY_H_ */
|